Re: QCX + (20) Winding Wires
Not so. QCX plus uses 28AWG for all toroidal.
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On Aug 19, 2022, at 7:20 AM, KC9REN <deanberg2044@...> wrote:
?Hi Kevin, You will notice the wires diameter are different. This is stated in the manual. The two different wires are wound onto different toroids. I hope this helps with the wires. I can't comment on the capacitors though. Look up the numbers on the internet. Do a search for capacitor values to find a chart that helps.
73,
Dean KC9REN
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Re: WSJT-X occasional crash
I do indeed have the same issue when I allow any of my radios to receive continuous over night (or multiple days). ?The issue has been observed on the QDX, QCX mini, QCX+, FT991a, and a FTDX10. ? I ?have observed that the reverse beacon stop reporting any receive stations, but the water fall and software shows to be running in the background. ? If I attempt to interact with the software, I get the response noted. ??
My guess was that it is an issue with reporting the spots. ??
I have very similar issues with FLDIGI ¡°crashing¡± when I allow it to run over night / multiple days. ? Note that I use an older Mac Book Pro for the computer interface. ?
NT5AT - Wilson.?
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On Aug 19, 2022, at 8:17 AM, Rob Giuliano via groups.io <kb8rco@...> wrote:
?I started WSJT-X with my RS-HFIQ, just to see if it would happen again, but noticed most of the computer applications have changed.
I have updated versions of OmniRig, HDSDR, and WSJT-X since I had the issue in the past
I have to admit, using the HobbyPCB RS-HFIQ radio makes things quite complicated.
There are a lot of computer applications and interactions:?
* HDSDR (now V2.81 Beta 6) is used as the software defined radio interface
* OmniRig (V1.12) is used as the CAT interface between HDSDR and WSJT-X
* WSJT-X (V2.5.0) is the part running the WSPR encode/decode
I can't say what they were when I had the original issue.
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Rob KB8RCO
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i've been out of town for a couple weeks, so have not laid eyes on my qrp labs cup for awhile, but I don't recall any dishwasher fade thus far. But sounds like I need to not tempt fate any longer, and go the hand wash route moving forward.
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On Thu, Aug 18, 2022 at 02:36 PM, Charles Brown wrote:
https://www.ntepartsdirect.com/ENG/PRODUCT/BS170?gclid=Cj0KCQjwxveXBhDDARIsAI0Q0x1avrhQBxbhEoTW2PvAGQeCXuP69_TqbrcEOhID_4FwCr3bV3Dx9l8aAih9EALw_wcB
https://www.digikey.com/en/products/detail/nte-electronics-inc/BS170/11652630
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Digi-Key Part Number
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?
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Manufacturer
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Charles Brown N4SO
It is interesting to see both places use the exact same datasheet that say 500ma. Dean KC9REN
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Re: QCX + (20) Winding Wires
Hi Kevin, You will notice the wires diameter are different. This is stated in the manual. The two different wires are wound onto different toroids. I hope this helps with the wires. I can't comment on the capacitors though. Look up the numbers on the internet. Do a search for capacitor values to find a chart that helps.
73,
Dean KC9REN
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Re: WSJT-X occasional crash
I started WSJT-X with my RS-HFIQ, just to see if it would happen again, but noticed most of the computer applications have changed.
I have updated versions of OmniRig, HDSDR, and WSJT-X since I had the issue in the past
I have to admit, using the HobbyPCB RS-HFIQ radio makes things quite complicated.
There are a lot of computer applications and interactions:?
* HDSDR (now V2.81 Beta 6) is used as the software defined radio interface
* OmniRig (V1.12) is used as the CAT interface between HDSDR and WSJT-X
* WSJT-X (V2.5.0) is the part running the WSPR encode/decode
I can't say what they were when I had the original issue.
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Rob KB8RCO
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Re: WSJT-X occasional crash
My symptoms were that it would not put the radio in TX.
I don't remember if there was an issue with uploading the data to WSPRNET.
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Rob KB8RCO
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Re: WSJT-X occasional crash
If indeed it is still receiving but not uploading to WSPRNet I would be looking at WSJT/Internet for the culprit ?
John KK4ITX? ?Each mistake is a learning opportunity.?
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On Aug 19, 2022, at 8:23 AM, Rob Giuliano via groups.io <kb8rco@...> wrote:
?I have had a similar problem with my HobbyPCB RS-HFIQ radio.
The issue came down to something with the CAT control, but I never narrowed it down any further.
I did suspect it having something to do with USB power management.? At one point I noticed it happened if I plugged any USB device in on the same internal PC hub.
The PC was a home brew so I am quite familiar with the USB post and associated hubs.? I changed the motherboard "plug" that I was using, and haven't noticed it since.?
HOWEVER, I am not running WSJT-X for WSPR like I used to.? I now have a U3S for that.
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Rob KB8RCO
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Yes, my mug looks like it is "bleeding" but the look adds to the "Homebrew" look of the mug and the whole kit building ethos haha!
Rich
KQ9L
On Friday, August 19, 2022 at 02:49:28 AM CDT, Hans Summers <hans.summers@...> wrote:
Hi all
The coffee cup print does indeed seem to suffer some drift or QSB in some dishwashers. Some time ago, I updated the shop page to state "Please wash by hand (not dishwasher)." It's disappointing because I have other branded mugs and they don't run. We actually had some discussion with the producer about this, and yesterday he brought?over to QRP Labs' office 6 new coffee mugs with a new extra-resilient coating, for us to test in our dishwashers.?
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Re: WSJT-X occasional crash
I have had a similar problem with my HobbyPCB RS-HFIQ radio.
The issue came down to something with the CAT control, but I never narrowed it down any further.
I did suspect it having something to do with USB power management.? At one point I noticed it happened if I plugged any USB device in on the same internal PC hub.
The PC was a home brew so I am quite familiar with the USB post and associated hubs.? I changed the motherboard "plug" that I was using, and haven't noticed it since.?
HOWEVER, I am not running WSJT-X for WSPR like I used to.? I now have a U3S for that.
--
Rob KB8RCO
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I wonder if others have problems with the WSJT-X software?? Occasionally, perhaps once every 2 or 3 days, it will crash, showing an error message saying something like "Failed in sub process 1" (I keep forgetting to take a careful note of what it says!).? This is in the WSPR mode.? When it fails, the receiving continues as normal, but I think no transmissions occur, and the error message box is displayed.??
When you acknowledge the error message, the whole program terminates.? it starts up normally again when restarted.? So anyone else have a similar problem?
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Peter Lee
G3SPL
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Re: It takes two PCs to operate four rigs ! OR, my ops desk is a mess !
Hello, Robert.
Four rigs, two antennas, two switches.
The 80 meters long end-fed wire may be used on all four rigs - one at a time and is tuned by the Icom AH-4 remote automatic antenna tuner with homebrew controller which resides on the ops desk..
The PAR Electronics OA-50 Omniangle antenna is currently used? only by the FT-450D or the Modified QCX-17. No tuner required. Six meters only.
Just this year, I donated a bunch of boat anchors to charity and took others to the dump. Just trying to modernize a bit.
72 / 73,
Bill, N4QA
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Dishwasher tablets and the water temperature are the killers. The water is much hotter than handwashing water and this can soften some image transfers. Dishwasher tablets contain abrasive particles to scour the food from plates etc. They finish off by abrading
the transfers softened by the very hot water.
We now have quite a large number of faded mugs now in my house. I managed to protect my Transputer T9000 mug ( with 4 handles?
) from being damaged by the dishwasher and went on to drop and break it when handwashing it.
?
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Hi all
The coffee cup print does indeed seem to suffer some drift or QSB in some dishwashers. Some time ago, I updated the shop page to state "Please wash by hand (not dishwasher)." It's disappointing because I have other branded mugs and they don't run. We actually had some discussion with the producer about this, and yesterday he brought?over to QRP Labs' office 6 new coffee mugs with a new extra-resilient coating, for us to test in our dishwashers.?
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Re: QSX 4th birthday !!!
#qsx
Solid state final amplifiers need to be followed by a low pass filter to take care of harmonics. (Back in the days of tubes, most radios used a final with a tuned tank circuit that acted as a bandpass filter. That kind of circuit is harder to design in the low voltage / high current world of transistors, plus people want the convenience of a no-tune design, so solid state rigs are not designed that way.) In a multiband rig the lowpass filters have to be switched for each band. In the QCX design, the low pass filter is inductors L1, L2, and L3, and the associated capacitors C25, C26, C27, and C28.
Most solid state final amplifiers are broadband, but the QCX uses a Class E final. A Class E final is inherently narrowband, as it depends on resonance in the tank circuit for its operation. In the QCX design, inductor L4 and capacitor C30 are the relevant components.
Finally, there is a bandpass filter in the receiver circuit. (It's not in the circuit when you transmit.) The components involved are transformer T1 (which also acts as part of the phase splitter), and capacitors C1, C5, and C8. C5 and C8 are not installed on some bands; those three capacitors are in parallel and need to add up to a suitable value of capacitance for the band. The amount of inductance also varies, as T1 is wound differently depending on the band.
Band switching the QCX is more involved than it would be for a typical solid state design. The Class E final means there are additional parts that would have to be switched to achieve Class E operation on each band. The way that the bandpass filter and phase splitter are combined is a very efficient design for a single band rig, but converting it for multiband operation would be difficult. It would likely be better to switch to a different circuit topology rather than try to switch all the components in the QCX. Another approach would be to use plug-in band modules, as some versions of the uSDX do; that can work well, but it makes changing bands more involved than just pushing a button on the front panel.
On Thu, Aug 18, 2022 at 10:54 PM Steve in Okinawa < sfab43@...> wrote: I've wondered what constraints there are to making a multi band QCX. The front end BPF toroid would be one.?
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Re: It takes two PCs to operate four rigs ! OR, my ops desk is a mess !
Hi, ? and you use four antennas? Otherwise, how do you prevent the rigs from destroying each other? ? 73 de Robert OE7OER ? ? ? In the attached photo are the FT-450D, Modified QCX-17, Modified QCX-80 and the brand new QDX !
PC on left is the Dell Inspiron i3 - on the right is the Dell Inspiron i5.
You might recognize a few other goodies as well.
Sheesh ! Life seems a lot more complicated than it was in the sixties, using the Meissner Signal Shifter EX and an RME-45 receiver !
...and the band played on...
72 / 73,
Bill, N4QA
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Re: QSX 4th birthday !!!
#qsx
I've wondered what constraints there are to making a multi band QCX. The front end BPF toroid would be one.?
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QDX + 50W Power Amplifier working well
I built a QRP Labs 50W power amplifier for QCX and am driving it with a QDX.? Powering the amp with 13.8V.? I don't have a good power meter, so I don't know the output but I definitely am getting out further than I did before. Now getting out from Chicago to west coast USA and Europe when those distances were rare for the stock QDX. So far everything is running cool with no problems. The power amp is a challenging build but everything went OK, powered right up with no magic smoke escaping. Now I just need a good antenna.
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Re: It takes two PCs to operate four rigs ! OR, my ops desk is a mess !
Dave.
I like both the core i3 and core i5 models ok, They're down here in Studio B. I have a second i3 in the sun room with the Malachite Malahit receiver.
All my PCs are several years old now.
Newest rig I have is the QDX.
72 / 73,
Bill, N4QA
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Re: QCX + (20) Winding Wires
Kevin, my kit contained a little bag marked "20 Meters" or words to that effect, containing the appropriate toroid cores and wire for that band. That's what I used to wind those coils and it all worked out great. The little rig fired up on the first try and works great!
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KK4ITX John
Shirley Dulcey KE1L
Lawrence KC6WOG