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Re: QMX Immediately shutsdown; safe to apply power w/o control and display boards

 

Hopefully something simple and/or obvious.

Don't forget to check the 2 header connectors on the main board too.?

Good hunting. Let us know if you solve it.

Greg KI4NVX




On Fri, Mar 22, 2024 at 5:05 PM, Al Simons
<al@...> wrote:
Greg, THANK YOU.? Pulling the display board lets it come up, drawing
~150mA at 6V. The terminal program is running, so it seems that at least
part of the CPU is OK.? Now to figure out what I did wrong with the
display board!

Again, thanks.
-Al WA1TYB

On 3/22/2024 14:36, Greg McCain via groups.io wrote:
> Just a quick thought.
>
> Without the control board will the unit even power up since the rotary
> push to power on won't be available?
>
> You might try just removing the display.
> If the current stays up, then the fault might be in the display board
> or the 5v power board.
>
> I've seen other posts where faults/ bridges/shorts in the power
> boards' connector chains have caused odd problems. I took the advice
> in the build instructions and clipped the one set of pins back about a
> millimeter or so because I could definitely see I that a few were too
> long and extended past the solder pads and awful close to other items.
>
>
> Greg
>
>
> Yahoo Mail: Search, Organize, Conquer
> <>
>
>? ? On Fri, Mar 22, 2024 at 2:32 PM, Al Simons
>? ? <al@...> wrote:
>? ? Just completed my Rev 3 QMX assembly. It performs the USB stick
>? ? emulation ok, to place the FW file on board. I did this both on
>? ? initial power-up and by jumpering AUX2 to GND. However, after FW
>? ? load, when I press the left knob it draws power for an instant and
>? ? then powers back down to 0.000A.? I'm using 7V, limited to 200mA.
>? ? I have inspected all my joints w/ a magnifier, all seem fine but
>? ? I'm considering buying a USB microscope.
>
>? ? To start troubleshooting I want to check the power boards.? For
>? ? easier access, is it safe to power up the unit without the control
>? ? board and display boards plugged in?
>
>? ? I've been monitoring this group since I placed my order.? I think
>? ? I remember a reference to a troubleshooting guide by Hans, and
>? ? another report of this failure mode, but I can't find either.
>? ? Pointers to either would be greatly appreciated. I'm aware of the
>? ? troubleshooting log Hans has posted about units he's fixed, but it
>? ? doesn't mention this failure.
>
>? ? Thanks for any advice and pointers.
>? ? 73,
>? ? -Al WA1TYB
>
>






Re: QMX Immediately shutsdown; safe to apply power w/o control and display boards

 

Greg, THANK YOU.? Pulling the display board lets it come up, drawing
~150mA at 6V. The terminal program is running, so it seems that at least
part of the CPU is OK.? Now to figure out what I did wrong with the
display board!

Again, thanks.
-Al WA1TYB

On 3/22/2024 14:36, Greg McCain via groups.io wrote:
Just a quick thought.

Without the control board will the unit even power up since the rotary
push to power on won't be available?

You might try just removing the display.
If the current stays up, then the fault might be in the display board
or the 5v power board.

I've seen other posts where faults/ bridges/shorts in the power
boards' connector chains have caused odd problems. I took the advice
in the build instructions and clipped the one set of pins back about a
millimeter or so because I could definitely see I that a few were too
long and extended past the solder pads and awful close to other items.


Greg


Yahoo Mail: Search, Organize, Conquer
<,Organize,Conquer&af_sub1=Acquisition&af_sub2=Global_YMktg&af_sub3=&af_sub4=100000945&af_sub5=OrganizeConquer__Static_>

On Fri, Mar 22, 2024 at 2:32 PM, Al Simons
<al@...> wrote:
Just completed my Rev 3 QMX assembly. It performs the USB stick
emulation ok, to place the FW file on board. I did this both on
initial power-up and by jumpering AUX2 to GND. However, after FW
load, when I press the left knob it draws power for an instant and
then powers back down to 0.000A.? I'm using 7V, limited to 200mA.
I have inspected all my joints w/ a magnifier, all seem fine but
I'm considering buying a USB microscope.

To start troubleshooting I want to check the power boards.? For
easier access, is it safe to power up the unit without the control
board and display boards plugged in?

I've been monitoring this group since I placed my order.? I think
I remember a reference to a troubleshooting guide by Hans, and
another report of this failure mode, but I can't find either.
Pointers to either would be greatly appreciated. I'm aware of the
troubleshooting log Hans has posted about units he's fixed, but it
doesn't mention this failure.

Thanks for any advice and pointers.
73,
-Al WA1TYB
Re: Disconnect USB after TX

 

Hi Bob,

many thanks for this explanation :-)

Have a nice weekend
Thorsten - DO1TG
Re: Disconnect USB after TX

 

¿ªÔÆÌåÓý

Hi Thorsten

Not so much good vs bad, but differing material type. ie what you may use for a 4:1 OCFD feed is not the same as RFI suppression. Most mag material suppliers have tables to consult. From memory Fair-Rite 31 material is good for common mode chokes and suppression whereas 43 and 53 are more for lower loss RF transformers.

I use 3-6 turns of power and/or USB cables through various toroid types. I have read though it is possible to "over choke" a USB2 cable and have managed to do that here with 7 turns through an F6 or F9C Neosid core.

Clipon cable suppressors are pretty useless at reducing RFI on HF, unless a few turns can be fitted through them.

Cheers Bob VK2YQA

On 23/3/24 07:36, qrp@... wrote:

Many thanks for all the answers :-)

I am quite new to this topic and I know that there are "good" and "bad" toroids in the market to do this job.

Do you have a tip to get the correct ones? For coax I also need a quite large toroid.

Many thanks

73 Thorsten - DO1TG

_._,_._,_
Re: QMX Immediately shutsdown; safe to apply power w/o control and display boards

 

Just a quick thought.

Without the control board will the unit even power up since the rotary push to power on won't be available?

You might try just removing the display.
If the current stays up, then the fault might be in the display board or the 5v power board.?

I've seen other posts where faults/ bridges/shorts in the power boards' connector chains have caused odd problems. I took the advice in the build instructions and clipped the one set of pins back about a millimeter or so because I could definitely see I that a few were too long and extended past the solder pads and awful close to other items.?


Greg



On Fri, Mar 22, 2024 at 2:32 PM, Al Simons
<al@...> wrote:
Just completed my Rev 3 QMX assembly. It performs the USB stick emulation ok, to place the FW file on board. I did this both on initial power-up and by jumpering AUX2 to GND.? However, after FW load, when I press the left knob it draws power for an instant and then powers back down to 0.000A.? I'm using 7V, limited to 200mA.? I have inspected all my joints w/ a magnifier, all seem fine but I'm considering buying a USB microscope.

To start troubleshooting I want to check the power boards.? For easier access, is it safe to power up the unit without the control board and display boards plugged in?

I've been monitoring this group since I placed my order.? I think I remember a reference to a troubleshooting guide by Hans, and another report of this failure mode, but I can't find either.? Pointers to either would be greatly appreciated.? I'm aware of the troubleshooting log Hans has posted about units he's fixed, but it doesn't mention this failure.

Thanks for any advice and pointers.
73,
-Al WA1TYB

Re: Disconnect USB after TX

 

Many thanks for all the answers :-)

I am quite new to this topic and I know that there are "good" and "bad" toroids in the market to do this job.

Do you have a tip to get the correct ones? For coax I also need a quite large toroid.

Many thanks

73 Thorsten - DO1TG
Re: Disconnect USB after TX

 

¿ªÔÆÌåÓý

You're getting RF into the computer.? You need to wrap toroid chokes on the USB cable, the power cable, the coax, and any other cables going to the computer.?? My Dell laptop is very sensitive to RF if I do not take precautions.? You might also consider a USB isolator.? I have one that is helpful not only for RF but also prevents hash from going to the radio.

73

Charles - NK8O

On 3/22/24 14:49, qrp@... wrote:

Hi all,

I just have finised my QMX and I already could receive vis WSJT on LInux quite well. Unfortunately, after sending (endfed or dummyload) usb disconnects.

I tried on 10m and 15m

?

This is the dmesg output:

?

USB disconnect, device number 29

[16356.469230] usb 1-6: new full-speed USB device number 30 using xhci_hcd

[16359.137386] usb 1-6: new full-speed USB device number 31 using xhci_hcd

[16359.473417] usb 1-6: device descriptor read/64, error -71

[16359.732218] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16359.732223] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16359.732226] usb 1-6: Product: QMX Transceiver

[16359.732228] usb 1-6: Manufacturer: QRP Labs

[16359.734607] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16360.794444] usb 1-6: USB disconnect, device number 31

[16360.794862] usb 1-6: cannot submit urb (err = -19)

[16360.795034] usb 1-6: cannot submit urb 0, error -19: no device

[16360.795848] xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 5 comp_code 1

[16360.795868] xhci_hcd 0000:00:14.0: Looking for event-dma 00000002327705f0 trb-start 0000000232770600 trb-end 0000000232770600 seg-start 0000000232770000 seg-end 0000000232770ff0

[16363.261224] usb 1-6: new full-speed USB device number 32 using xhci_hcd

[16523.538305] usb 1-6: new full-speed USB device number 33 using xhci_hcd

[16568.470382] usb 1-6: new full-speed USB device number 34 using xhci_hcd

[16595.342519] usb 1-6: new full-speed USB device number 35 using xhci_hcd

[16595.493289] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16595.493305] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16595.493312] usb 1-6: Product: QMX Transceiver

[16595.493318] usb 1-6: Manufacturer: QRP Labs

[16595.496693] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16595.621351] usb 1-6: USB disconnect, device number 35

[16596.578467] usb 1-6: new full-speed USB device number 36 using xhci_hcd

[16596.737322] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16596.737337] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16596.737347] usb 1-6: Product: QMX Transceiver

[16596.737355] usb 1-6: Manufacturer: QRP Labs

[16596.740588] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16616.135622] usb 1-6: USB disconnect, device number 36

[16616.136286] usb 1-6: Unable to submit urb #2: -19 at snd_usb_queue_pending_output_urbs

[16616.446588] usb 1-6: new full-speed USB device number 37 using xhci_hcd

[16616.597357] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16616.597372] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16616.597380] usb 1-6: Product: QMX Transceiver

[16616.597385] usb 1-6: Manufacturer: QRP Labs

[16616.600536] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16616.772816] usb 1-6: USB disconnect, device number 37

[16619.706635] usb usb1-port6: connect-debounce failed

[16641.666740] usb 1-6: new full-speed USB device number 38 using xhci_hcd

[16641.816766] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16641.816781] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16641.816788] usb 1-6: Product: QMX Transceiver

[16641.816794] usb 1-6: Manufacturer: QRP Labs

[16641.821957] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16676.663594] retire_capture_urb: 2 callbacks suppressed

[16679.996568] usb 1-6: 3:0: usb_set_interface failed (-71)

[16685.960951] usb 1-6: 3:0: usb_set_interface failed (-71)

[16685.960977] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961290] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961312] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961404] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961426] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961502] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961520] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961551] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961570] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961582] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961597] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961610] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961630] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961648] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961661] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961697] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961713] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961726] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961743] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961810] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961828] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961859] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788561] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788610] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788718] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788753] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788994] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789044] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789189] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789218] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789309] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789346] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789419] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789447] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789527] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789559] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789597] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789616] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789634] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789652] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789689] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789708] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789725] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789739] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789756] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789773] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789793] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.660993] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661103] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661209] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661262] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661865] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661971] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662118] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662182] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662315] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662371] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662531] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662585] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662660] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662710] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662780] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662829] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662901] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663000] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663098] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663150] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663238] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663293] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663672] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663757] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663921] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663994] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664125] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664181] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664465] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664528] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664650] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664709] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16747.699359] usb 1-6: USB disconnect, device number 38

[16747.699441] usb 1-6: Unable to submit urb #2: -19 at snd_usb_queue_pending_output_urbs

[16747.699551] usb 1-6: cannot submit urb 0, error -19: no device

[16747.699573] usb 1-6: cannot submit urb 0, error -19: no device

[16748.015137] usb 1-6: new full-speed USB device number 39 using xhci_hcd

[16748.143155] usb 1-6: device descriptor read/64, error -71

[16748.379186] usb 1-6: device descriptor read/64, error -71

[16748.619152] usb 1-6: new full-speed USB device number 40 using xhci_hcd

[16748.747174] usb 1-6: device descriptor read/64, error -71

[16748.983189] usb 1-6: device descriptor read/64, error -71

[16749.091263] usb usb1-port6: attempt power cycle

[16749.571099] usb 1-6: new full-speed USB device number 41 using xhci_hcd

[16749.571251] usb 1-6: Device not responding to setup address.

[16749.779215] usb 1-6: Device not responding to setup address.

[16749.987149] usb 1-6: device not accepting address 41, error -71

[16750.115156] usb 1-6: new full-speed USB device number 42 using xhci_hcd

[16750.115345] usb 1-6: Device not responding to setup address.

[16750.323333] usb 1-6: Device not responding to setup address.

[16750.531174] usb 1-6: device not accepting address 42, error -71

[16750.531306] usb usb1-port6: unable to enumerate USB device


What should I do now?

73 Thorsten - DO1TG
Re: Disconnect USB after TX

 

¿ªÔÆÌåÓý

Sounds like an open on your antenna connection RF getting into the unit or USB grounding issue. de Bill N3GTY

On 3/22/2024 3:49 PM, qrp@... wrote:

Hi all,

I just have finised my QMX and I already could receive vis WSJT on LInux quite well. Unfortunately, after sending (endfed or dummyload) usb disconnects.

I tried on 10m and 15m

?

This is the dmesg output:

?

USB disconnect, device number 29

[16356.469230] usb 1-6: new full-speed USB device number 30 using xhci_hcd

[16359.137386] usb 1-6: new full-speed USB device number 31 using xhci_hcd

[16359.473417] usb 1-6: device descriptor read/64, error -71

[16359.732218] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16359.732223] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16359.732226] usb 1-6: Product: QMX Transceiver

[16359.732228] usb 1-6: Manufacturer: QRP Labs

[16359.734607] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16360.794444] usb 1-6: USB disconnect, device number 31

[16360.794862] usb 1-6: cannot submit urb (err = -19)

[16360.795034] usb 1-6: cannot submit urb 0, error -19: no device

[16360.795848] xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 5 comp_code 1

[16360.795868] xhci_hcd 0000:00:14.0: Looking for event-dma 00000002327705f0 trb-start 0000000232770600 trb-end 0000000232770600 seg-start 0000000232770000 seg-end 0000000232770ff0

[16363.261224] usb 1-6: new full-speed USB device number 32 using xhci_hcd

[16523.538305] usb 1-6: new full-speed USB device number 33 using xhci_hcd

[16568.470382] usb 1-6: new full-speed USB device number 34 using xhci_hcd

[16595.342519] usb 1-6: new full-speed USB device number 35 using xhci_hcd

[16595.493289] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16595.493305] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16595.493312] usb 1-6: Product: QMX Transceiver

[16595.493318] usb 1-6: Manufacturer: QRP Labs

[16595.496693] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16595.621351] usb 1-6: USB disconnect, device number 35

[16596.578467] usb 1-6: new full-speed USB device number 36 using xhci_hcd

[16596.737322] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16596.737337] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16596.737347] usb 1-6: Product: QMX Transceiver

[16596.737355] usb 1-6: Manufacturer: QRP Labs

[16596.740588] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16616.135622] usb 1-6: USB disconnect, device number 36

[16616.136286] usb 1-6: Unable to submit urb #2: -19 at snd_usb_queue_pending_output_urbs

[16616.446588] usb 1-6: new full-speed USB device number 37 using xhci_hcd

[16616.597357] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16616.597372] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16616.597380] usb 1-6: Product: QMX Transceiver

[16616.597385] usb 1-6: Manufacturer: QRP Labs

[16616.600536] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16616.772816] usb 1-6: USB disconnect, device number 37

[16619.706635] usb usb1-port6: connect-debounce failed

[16641.666740] usb 1-6: new full-speed USB device number 38 using xhci_hcd

[16641.816766] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16641.816781] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16641.816788] usb 1-6: Product: QMX Transceiver

[16641.816794] usb 1-6: Manufacturer: QRP Labs

[16641.821957] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16676.663594] retire_capture_urb: 2 callbacks suppressed

[16679.996568] usb 1-6: 3:0: usb_set_interface failed (-71)

[16685.960951] usb 1-6: 3:0: usb_set_interface failed (-71)

[16685.960977] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961290] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961312] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961404] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961426] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961502] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961520] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961551] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961570] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961582] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961597] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961610] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961630] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961648] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961661] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961697] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961713] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961726] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961743] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961810] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961828] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961859] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788561] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788610] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788718] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788753] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788994] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789044] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789189] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789218] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789309] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789346] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789419] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789447] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789527] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789559] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789597] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789616] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789634] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789652] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789689] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789708] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789725] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789739] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789756] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789773] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789793] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.660993] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661103] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661209] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661262] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661865] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661971] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662118] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662182] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662315] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662371] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662531] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662585] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662660] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662710] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662780] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662829] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662901] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663000] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663098] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663150] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663238] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663293] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663672] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663757] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663921] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663994] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664125] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664181] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664465] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664528] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664650] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664709] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16747.699359] usb 1-6: USB disconnect, device number 38

[16747.699441] usb 1-6: Unable to submit urb #2: -19 at snd_usb_queue_pending_output_urbs

[16747.699551] usb 1-6: cannot submit urb 0, error -19: no device

[16747.699573] usb 1-6: cannot submit urb 0, error -19: no device

[16748.015137] usb 1-6: new full-speed USB device number 39 using xhci_hcd

[16748.143155] usb 1-6: device descriptor read/64, error -71

[16748.379186] usb 1-6: device descriptor read/64, error -71

[16748.619152] usb 1-6: new full-speed USB device number 40 using xhci_hcd

[16748.747174] usb 1-6: device descriptor read/64, error -71

[16748.983189] usb 1-6: device descriptor read/64, error -71

[16749.091263] usb usb1-port6: attempt power cycle

[16749.571099] usb 1-6: new full-speed USB device number 41 using xhci_hcd

[16749.571251] usb 1-6: Device not responding to setup address.

[16749.779215] usb 1-6: Device not responding to setup address.

[16749.987149] usb 1-6: device not accepting address 41, error -71

[16750.115156] usb 1-6: new full-speed USB device number 42 using xhci_hcd

[16750.115345] usb 1-6: Device not responding to setup address.

[16750.323333] usb 1-6: Device not responding to setup address.

[16750.531174] usb 1-6: device not accepting address 42, error -71

[16750.531306] usb usb1-port6: unable to enumerate USB device


What should I do now?

73 Thorsten - DO1TG
Disconnect USB after TX

 

Hi all,

I just have finised my QMX and I already could receive vis WSJT on LInux quite well. Unfortunately, after sending (endfed or dummyload) usb disconnects.

I tried on 10m and 15m

?

This is the dmesg output:

?

USB disconnect, device number 29

[16356.469230] usb 1-6: new full-speed USB device number 30 using xhci_hcd

[16359.137386] usb 1-6: new full-speed USB device number 31 using xhci_hcd

[16359.473417] usb 1-6: device descriptor read/64, error -71

[16359.732218] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16359.732223] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16359.732226] usb 1-6: Product: QMX Transceiver

[16359.732228] usb 1-6: Manufacturer: QRP Labs

[16359.734607] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16360.794444] usb 1-6: USB disconnect, device number 31

[16360.794862] usb 1-6: cannot submit urb (err = -19)

[16360.795034] usb 1-6: cannot submit urb 0, error -19: no device

[16360.795848] xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD ep_index 5 comp_code 1

[16360.795868] xhci_hcd 0000:00:14.0: Looking for event-dma 00000002327705f0 trb-start 0000000232770600 trb-end 0000000232770600 seg-start 0000000232770000 seg-end 0000000232770ff0

[16363.261224] usb 1-6: new full-speed USB device number 32 using xhci_hcd

[16523.538305] usb 1-6: new full-speed USB device number 33 using xhci_hcd

[16568.470382] usb 1-6: new full-speed USB device number 34 using xhci_hcd

[16595.342519] usb 1-6: new full-speed USB device number 35 using xhci_hcd

[16595.493289] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16595.493305] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16595.493312] usb 1-6: Product: QMX Transceiver

[16595.493318] usb 1-6: Manufacturer: QRP Labs

[16595.496693] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16595.621351] usb 1-6: USB disconnect, device number 35

[16596.578467] usb 1-6: new full-speed USB device number 36 using xhci_hcd

[16596.737322] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16596.737337] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16596.737347] usb 1-6: Product: QMX Transceiver

[16596.737355] usb 1-6: Manufacturer: QRP Labs

[16596.740588] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16616.135622] usb 1-6: USB disconnect, device number 36

[16616.136286] usb 1-6: Unable to submit urb #2: -19 at snd_usb_queue_pending_output_urbs

[16616.446588] usb 1-6: new full-speed USB device number 37 using xhci_hcd

[16616.597357] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16616.597372] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16616.597380] usb 1-6: Product: QMX Transceiver

[16616.597385] usb 1-6: Manufacturer: QRP Labs

[16616.600536] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16616.772816] usb 1-6: USB disconnect, device number 37

[16619.706635] usb usb1-port6: connect-debounce failed

[16641.666740] usb 1-6: new full-speed USB device number 38 using xhci_hcd

[16641.816766] usb 1-6: New USB device found, idVendor=0483, idProduct=a34c, bcdDevice= 1.00

[16641.816781] usb 1-6: New USB device strings: Mfr=1, Product=2, SerialNumber=0

[16641.816788] usb 1-6: Product: QMX Transceiver

[16641.816794] usb 1-6: Manufacturer: QRP Labs

[16641.821957] cdc_acm 1-6:1.0: ttyACM0: USB ACM device

[16676.663594] retire_capture_urb: 2 callbacks suppressed

[16679.996568] usb 1-6: 3:0: usb_set_interface failed (-71)

[16685.960951] usb 1-6: 3:0: usb_set_interface failed (-71)

[16685.960977] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961290] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961312] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961404] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961426] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961502] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961520] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961551] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961570] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961582] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961597] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961610] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961630] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961648] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961661] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961697] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961713] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961726] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961743] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961810] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961828] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16685.961859] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788561] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788610] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788718] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788753] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.788994] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789044] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789189] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789218] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789309] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789346] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789419] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789447] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789527] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789559] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789597] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789616] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789634] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789652] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789689] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789708] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789725] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789739] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789756] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789773] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16713.789793] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.660993] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661103] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661209] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661262] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661865] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.661971] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662118] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662182] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662315] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662371] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662531] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662585] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662660] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662710] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662780] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662829] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.662901] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663000] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663098] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663150] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663238] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663293] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663672] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663757] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663921] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.663994] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664125] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664181] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664465] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664528] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664650] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16716.664709] usb 1-6: cannot submit urb 0, error -2: endpoint not enabled

[16747.699359] usb 1-6: USB disconnect, device number 38

[16747.699441] usb 1-6: Unable to submit urb #2: -19 at snd_usb_queue_pending_output_urbs

[16747.699551] usb 1-6: cannot submit urb 0, error -19: no device

[16747.699573] usb 1-6: cannot submit urb 0, error -19: no device

[16748.015137] usb 1-6: new full-speed USB device number 39 using xhci_hcd

[16748.143155] usb 1-6: device descriptor read/64, error -71

[16748.379186] usb 1-6: device descriptor read/64, error -71

[16748.619152] usb 1-6: new full-speed USB device number 40 using xhci_hcd

[16748.747174] usb 1-6: device descriptor read/64, error -71

[16748.983189] usb 1-6: device descriptor read/64, error -71

[16749.091263] usb usb1-port6: attempt power cycle

[16749.571099] usb 1-6: new full-speed USB device number 41 using xhci_hcd

[16749.571251] usb 1-6: Device not responding to setup address.

[16749.779215] usb 1-6: Device not responding to setup address.

[16749.987149] usb 1-6: device not accepting address 41, error -71

[16750.115156] usb 1-6: new full-speed USB device number 42 using xhci_hcd

[16750.115345] usb 1-6: Device not responding to setup address.

[16750.323333] usb 1-6: Device not responding to setup address.

[16750.531174] usb 1-6: device not accepting address 42, error -71

[16750.531306] usb usb1-port6: unable to enumerate USB device


What should I do now?

73 Thorsten - DO1TG
Re: QCX version 3 PCB volume issue

 

Thanks Ron you were a great help.

On Fri, Mar 22, 2024 at 11:57?AM Ronald Taylor <wa7gil@...> wrote:
Any size that fits is fine. I think those are 1/4 watt. Sounds like you found the problem. Good luck. ¡­. Ron

On Fri, Mar 22, 2024 at 10:43 David Delongchamp <adukhntr@...> wrote:
Hi Ron:
I checked the schematic and found the junction of R39 and R40. I was able to connect the 2 resistors. The voltage readings did not change. So I checked the ohm value of the two resistors and got 10K on R40 and a error reading on R39. Based on that I¡¯m thinking R39 is faulty and I should replace it. What size resistor is R39 I know it¡¯s 10K. In searching for one what am I looking for in its values??
Thanks,?
Dave

On Mar 21, 2024, at 6:07?PM, Ronald Taylor <wa7gil@...> wrote:

?
OK Dave, it sounds like there is no connection between R39 and R40 and there should be. One side of R39 connects to ground (0 v) and the other side is supposed to connect to R40. Where they connect together is what I called the junction of the two. This junction is supposed to connect to pin 5 of IC10. The other side of R40 is connected to 12v. Since you see about 12 v on pin 5 of IC10, then there is no continuity between R39 and R4o. Please look at the circuit diagram and the board layout drawings and determine where that interconnection is supposed to be and solder a short jumper?wire between the two points to restore the missing connection?between the two resistors. Good luck .. 73 .. Ron

On Thu, Mar 21, 2024 at 5:01?PM David Delongchamp <adukhntr@...> wrote:
Ron:
?I got 11.16v off of R40 and 0 volts from R39 and I¡¯m getting 11.6v on pin 5 of IC-10
I¡¯m not sure what you meant by the junction ?of R40 and R39. I took voltage readings from the wire off of R40 and then R39.
Thanks,
Dave

On Mar 21, 2024, at 4:21?PM, Ronald Taylor <wa7gil@...> wrote:

?
OK Dave, looks like there's something wrong in the area of R39 and R40. Those two resistors form a voltage divider from the 12v input and should show about 6 volts at the junction of the two. That same voltage should be on pin 5 of IC10 from where it then appears on the rest of the pins, 1,2,3,6&7. Please check those resistors and the voltage?between?them. If it is about 6 volts then check for continuity from the junction of the two resistors to pin 5 of IC10. Look at the schematic to see where this is going. Let us know what you find ... 73 .. Ron

On Thu, Mar 21, 2024 at 3:23?PM David Delongchamp <adukhntr@...> wrote:
IC-8 pins 1,2,3,5,6, and 7 were 2.4v

IC-9 pin 1 was 4.77v, pin 2 was 4.77v, pin 3 was 4.44v, pin 5 was 2.4 v, pin 6 was 2.4v and pin 7 was 2.4v

IC-10 pin 1 was 12.58v, pin 2 was 12.58v, pin 3 was 12.58v, pin 5 was 11.16v, pin 6 was 11.34v and pin 7 was 12.58 v?
Thanks,
Dave

On Mar 21, 2024, at 1:59?PM, Ronald Taylor <wa7gil@...> wrote:

?
Ok. Then you next should check the bias voltages on the op amp ICs 8,9 and 10. With your DVM you should see about 2.5v on pins 1,2,3,5,6&7 of IC 8 and on pins 5,6&7 of IC9. You should also see about 4.8v on pins 1,2&3 of IC9 and a bit less than half the input voltage on pins 1,2,3,5,6&7 of IC10. Please verify those voltages. Thanks¡­.Ron

On Thu, Mar 21, 2024 at 12:31 David Delongchamp <adukhntr@...> wrote:
?My max BPF adjustment was 9

On Mar 21, 2024, at 12:02?PM, Ronald Taylor <wa7gil@...> wrote:

?
Hi Dave. What signal level did you see when you did the bandpass filter adjustment??

Ron

On Thu, Mar 21, 2024 at 11:18 David Delongchamp <adukhntr@...> wrote:
I just built a QCX version 3 PCB that I purchased from QRP Labs several years ago. Upon completion of the kit I am having volume issues. With the gain turned to max I can barely hear the tone. I noticed when doing the IQ balance that I could not get higher than 3 when the directions said turn the gain control mid way and you should tune at around 9. I could only reach 3 with max gain.
Have you heard of this problem? If so what can I do to resolve this issue.
A little more info on my QCX. I am using the newest ATmega 1.09A chip. In the build I changed R41 to 150 ohm, R42 to 1.2 Kohm and C31 to 2.2 micro farad this was to improve the keying envelope.
Any input would be greatly appreciated.
Dave
W6MRD
QMX, RTTY, HRD, Thumps, and other miscellaneous

 

I have been a user of Ham Radio Deluxe for as long as its been around and I find that I'm having no trouble on RTTY using Digital Master, also known as DM780.? I did some experimenting this afternoon with DM780 and FLDIGI and found that where FLDIGI drops out Digital Master keeps going.

Another tip for for those using HRD is to use the settings for Kenwood's TS-570 rather than the 440, 350, or 480. I find that the volume slider and the vfo switching work more as expected. This does not seem to be the case on other software, but is likely a matter of HRD's implementation of the various Kenwood profiles.

I have also found that keeping the AF GAIN slider in HRD's rig control at about 25 and using the QMX's volume control to set a good listening level results in smooth operation with no clicking or thumping. Run the AF GAIN slider too far up and bad things start happening.

To Hans and the team, Keep up the good work, and I look forward to seeing you at Hamvention. I'm the guy from the callsign hat and tee shirt booth across the aisle from you.

73,? Ron - K9ID

?
Re: QCX version 3 PCB volume issue

 

Any size that fits is fine. I think those are 1/4 watt. Sounds like you found the problem. Good luck. ¡­. Ron

On Fri, Mar 22, 2024 at 10:43 David Delongchamp <adukhntr@...> wrote:
Hi Ron:
I checked the schematic and found the junction of R39 and R40. I was able to connect the 2 resistors. The voltage readings did not change. So I checked the ohm value of the two resistors and got 10K on R40 and a error reading on R39. Based on that I¡¯m thinking R39 is faulty and I should replace it. What size resistor is R39 I know it¡¯s 10K. In searching for one what am I looking for in its values??
Thanks,?
Dave

On Mar 21, 2024, at 6:07?PM, Ronald Taylor <wa7gil@...> wrote:

?
OK Dave, it sounds like there is no connection between R39 and R40 and there should be. One side of R39 connects to ground (0 v) and the other side is supposed to connect to R40. Where they connect together is what I called the junction of the two. This junction is supposed to connect to pin 5 of IC10. The other side of R40 is connected to 12v. Since you see about 12 v on pin 5 of IC10, then there is no continuity between R39 and R4o. Please look at the circuit diagram and the board layout drawings and determine where that interconnection is supposed to be and solder a short jumper?wire between the two points to restore the missing connection?between the two resistors. Good luck .. 73 .. Ron

On Thu, Mar 21, 2024 at 5:01?PM David Delongchamp <adukhntr@...> wrote:
Ron:
?I got 11.16v off of R40 and 0 volts from R39 and I¡¯m getting 11.6v on pin 5 of IC-10
I¡¯m not sure what you meant by the junction ?of R40 and R39. I took voltage readings from the wire off of R40 and then R39.
Thanks,
Dave

On Mar 21, 2024, at 4:21?PM, Ronald Taylor <wa7gil@...> wrote:

?
OK Dave, looks like there's something wrong in the area of R39 and R40. Those two resistors form a voltage divider from the 12v input and should show about 6 volts at the junction of the two. That same voltage should be on pin 5 of IC10 from where it then appears on the rest of the pins, 1,2,3,6&7. Please check those resistors and the voltage?between?them. If it is about 6 volts then check for continuity from the junction of the two resistors to pin 5 of IC10. Look at the schematic to see where this is going. Let us know what you find ... 73 .. Ron

On Thu, Mar 21, 2024 at 3:23?PM David Delongchamp <adukhntr@...> wrote:
IC-8 pins 1,2,3,5,6, and 7 were 2.4v

IC-9 pin 1 was 4.77v, pin 2 was 4.77v, pin 3 was 4.44v, pin 5 was 2.4 v, pin 6 was 2.4v and pin 7 was 2.4v

IC-10 pin 1 was 12.58v, pin 2 was 12.58v, pin 3 was 12.58v, pin 5 was 11.16v, pin 6 was 11.34v and pin 7 was 12.58 v?
Thanks,
Dave

On Mar 21, 2024, at 1:59?PM, Ronald Taylor <wa7gil@...> wrote:

?
Ok. Then you next should check the bias voltages on the op amp ICs 8,9 and 10. With your DVM you should see about 2.5v on pins 1,2,3,5,6&7 of IC 8 and on pins 5,6&7 of IC9. You should also see about 4.8v on pins 1,2&3 of IC9 and a bit less than half the input voltage on pins 1,2,3,5,6&7 of IC10. Please verify those voltages. Thanks¡­.Ron

On Thu, Mar 21, 2024 at 12:31 David Delongchamp <adukhntr@...> wrote:
?My max BPF adjustment was 9

On Mar 21, 2024, at 12:02?PM, Ronald Taylor <wa7gil@...> wrote:

?
Hi Dave. What signal level did you see when you did the bandpass filter adjustment??

Ron

On Thu, Mar 21, 2024 at 11:18 David Delongchamp <adukhntr@...> wrote:
I just built a QCX version 3 PCB that I purchased from QRP Labs several years ago. Upon completion of the kit I am having volume issues. With the gain turned to max I can barely hear the tone. I noticed when doing the IQ balance that I could not get higher than 3 when the directions said turn the gain control mid way and you should tune at around 9. I could only reach 3 with max gain.
Have you heard of this problem? If so what can I do to resolve this issue.
A little more info on my QCX. I am using the newest ATmega 1.09A chip. In the build I changed R41 to 150 ohm, R42 to 1.2 Kohm and C31 to 2.2 micro farad this was to improve the keying envelope.
Any input would be greatly appreciated.
Dave
W6MRD
QMX Immediately shutsdown; safe to apply power w/o control and display boards

 

Just completed my Rev 3 QMX assembly. It performs the USB stick emulation ok, to place the FW file on board. I did this both on initial power-up and by jumpering AUX2 to GND.? However, after FW load, when I press the left knob it draws power for an instant and then powers back down to 0.000A.? I'm using 7V, limited to 200mA.? I have inspected all my joints w/ a magnifier, all seem fine but I'm considering buying a USB microscope.

To start troubleshooting I want to check the power boards.? For easier access, is it safe to power up the unit without the control board and display boards plugged in?

I've been monitoring this group since I placed my order.? I think I remember a reference to a troubleshooting guide by Hans, and another report of this failure mode, but I can't find either.? Pointers to either would be greatly appreciated.? I'm aware of the troubleshooting log Hans has posted about units he's fixed, but it doesn't mention this failure.

Thanks for any advice and pointers.
73,
-Al WA1TYB
Re: FT8CN and QMX (1_00_017) #firmware #qmx

 

Valentine Michael Smith is back.
Re: Delivery - impressed

 

Placed the order on 8th Sept.?
Re: QCX version 3 PCB volume issue

 

¿ªÔÆÌåÓý

Hi Ron:
I checked the schematic and found the junction of R39 and R40. I was able to connect the 2 resistors. The voltage readings did not change. So I checked the ohm value of the two resistors and got 10K on R40 and a error reading on R39. Based on that I¡¯m thinking R39 is faulty and I should replace it. What size resistor is R39 I know it¡¯s 10K. In searching for one what am I looking for in its values??
Thanks,?
Dave

On Mar 21, 2024, at 6:07?PM, Ronald Taylor <wa7gil@...> wrote:

?
OK Dave, it sounds like there is no connection between R39 and R40 and there should be. One side of R39 connects to ground (0 v) and the other side is supposed to connect to R40. Where they connect together is what I called the junction of the two. This junction is supposed to connect to pin 5 of IC10. The other side of R40 is connected to 12v. Since you see about 12 v on pin 5 of IC10, then there is no continuity between R39 and R4o. Please look at the circuit diagram and the board layout drawings and determine where that interconnection is supposed to be and solder a short jumper?wire between the two points to restore the missing connection?between the two resistors. Good luck .. 73 .. Ron

On Thu, Mar 21, 2024 at 5:01?PM David Delongchamp <adukhntr@...> wrote:
Ron:
?I got 11.16v off of R40 and 0 volts from R39 and I¡¯m getting 11.6v on pin 5 of IC-10
I¡¯m not sure what you meant by the junction ?of R40 and R39. I took voltage readings from the wire off of R40 and then R39.
Thanks,
Dave

On Mar 21, 2024, at 4:21?PM, Ronald Taylor <wa7gil@...> wrote:

?
OK Dave, looks like there's something wrong in the area of R39 and R40. Those two resistors form a voltage divider from the 12v input and should show about 6 volts at the junction of the two. That same voltage should be on pin 5 of IC10 from where it then appears on the rest of the pins, 1,2,3,6&7. Please check those resistors and the voltage?between?them. If it is about 6 volts then check for continuity from the junction of the two resistors to pin 5 of IC10. Look at the schematic to see where this is going. Let us know what you find ... 73 .. Ron

On Thu, Mar 21, 2024 at 3:23?PM David Delongchamp <adukhntr@...> wrote:
IC-8 pins 1,2,3,5,6, and 7 were 2.4v

IC-9 pin 1 was 4.77v, pin 2 was 4.77v, pin 3 was 4.44v, pin 5 was 2.4 v, pin 6 was 2.4v and pin 7 was 2.4v

IC-10 pin 1 was 12.58v, pin 2 was 12.58v, pin 3 was 12.58v, pin 5 was 11.16v, pin 6 was 11.34v and pin 7 was 12.58 v?
Thanks,
Dave

On Mar 21, 2024, at 1:59?PM, Ronald Taylor <wa7gil@...> wrote:

?
Ok. Then you next should check the bias voltages on the op amp ICs 8,9 and 10. With your DVM you should see about 2.5v on pins 1,2,3,5,6&7 of IC 8 and on pins 5,6&7 of IC9. You should also see about 4.8v on pins 1,2&3 of IC9 and a bit less than half the input voltage on pins 1,2,3,5,6&7 of IC10. Please verify those voltages. Thanks¡­.Ron

On Thu, Mar 21, 2024 at 12:31 David Delongchamp <adukhntr@...> wrote:
?My max BPF adjustment was 9

On Mar 21, 2024, at 12:02?PM, Ronald Taylor <wa7gil@...> wrote:

?
Hi Dave. What signal level did you see when you did the bandpass filter adjustment??

Ron

On Thu, Mar 21, 2024 at 11:18 David Delongchamp <adukhntr@...> wrote:
I just built a QCX version 3 PCB that I purchased from QRP Labs several years ago. Upon completion of the kit I am having volume issues. With the gain turned to max I can barely hear the tone. I noticed when doing the IQ balance that I could not get higher than 3 when the directions said turn the gain control mid way and you should tune at around 9. I could only reach 3 with max gain.
Have you heard of this problem? If so what can I do to resolve this issue.
A little more info on my QCX. I am using the newest ATmega 1.09A chip. In the build I changed R41 to 150 ohm, R42 to 1.2 Kohm and C31 to 2.2 micro farad this was to improve the keying envelope.
Any input would be greatly appreciated.
Dave
W6MRD
Re: QMX & SOTAMAT

 

Yeah that sounds about right. It is a special case after all. Could be something the dev is working on, never know. Maybe give him the suggestion along with a good app rating just in case. And if he has a "buy me a coffee/beer" thing... ;)
Re: QMX & SOTAMAT

 

Jason, I can't see any way in iFTx to send a custom message like you mentioned, you just enter your own callsign and locator, it is not very functional as yet and needs attention from the dev.?
Previously I have done as you have suggested and put the code from the app directly into wsjt-x with success.


On Fri, Mar 22, 2024 at 2:17?PM Jason - KO4NDP <jason.turnage@...> wrote:
w6csn: very true!? you will def not get spotted trying to spot with a k-* park anymore.
Richard: I haven't but plan to this weekend for the first time.? You're not going to have any luck with the mic though.? Instead, snag the computed message it provides and instead of "playing the audio" into the qmx, just enter that message into your ft8 app and do an ft8 tx as usual with that message instead of a cq.? That's all the sotamat app is doing, on top of the frequency shifted repeats, et al.? I don't have an iphone so no idea if iftx will let you do that but I assume it has some sort of message configuration?

Re: Should the U4B tracker work on USB power for testing?

 

¿ªÔÆÌåÓý

The other setting that I found worked was running at 27mW vs low power.

John?
KK4ITX?

?Each mistake is a learning opportunity.?

On Mar 21, 2024, at 9:18 PM, VE3KCL <airdry@...> wrote:

?Hi Adrian? you can test the U4B on usb power but it is much better to use a battery and then you will get the correct telemetry voltage and have the gps free of possible computer or power supply interference? ... an 18650 battery will last for about 3 days of continuous transmission ... that is what I test with.
Dave VE3KCL

Re: QMX & SOTAMAT

 

yes there are clear instructions about this on the sotamat website, basically sync your data on your phone before every outing.
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