Re: New kit: QDX - Digital Transceiver by QRP Labs
Hi Laurence? > Hans,? Are you taking pre-orders > for?the next lot?
No. You've heard of the global semiconductor shortage... The STM32F401RBT6 microcontroller in the QDX can't be found anywhere. I can't make more QDX until I can either find some, or figure out a substitute and whatever Re-development is necessary to make that work. At the moment I don't know when that can happen. I wouldn't take pre-orders until I could be very definite about dates.?
73 Hans G0UPL http://qrp-labs.com
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Re: New kit: QDX - Digital Transceiver by QRP Labs
Fast indeed... and the checkout kept crashing as everyone was
trying to get in (looks like the shop could use a beefier
server).? I think I have one ordered, but after all the starts and
restarts, I can't really tell...
Dave, N9UXU
On 10/11/2021 4:17 PM, Ken Hansen
wrote:
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Yes - I placed an order as soon as selling opened up (440
available), as soon as my order was completed they were gone.
I ordered two, and FedEx was cheaper than postal.
Looks like a fun kit.
Ken, N2VIP
?
I guess he sold them all in less then 10
minutes.
On Mon, Oct 11, 2021,
12:26 AM Shirley Dulcey KE1L < mark@...>
wrote:
FreeDV is a framework that incorporates
the Codec2 voice codec and various modems. The usual
modems on HF use OFDM modulation; multiple carriers,
so not suitable for the QDX.
On Sun, Oct 10, 2021
at 11:59 PM Buddy Brannan < buddy@...>
wrote:
So¡idle question
really, but ¡
Given that this outputs digit modes using a sound
card, could it be used for FreeDV? Very narrow
digital voice mode:
Pretty interesting if it could. Of course, if it
won¡¯t tune past the Digital portions of the band, I
guess the point is moot, but still, idly curious.
Buddy Brannan, KB5ELV - Erie, PA
Email: buddy@...
Mobile: (814) 431-0962
> On Oct 10, 2021, at 7:08 AM, Tom, wb6b <wb6b@...>
wrote:
>
> On Sat, Oct 9, 2021 at 07:52 AM, Hans Summers
wrote:
> The main QRP Labs page is
> I just read the "draft" manual. So many good
ideas for practical designs already worked out by an
expert. Hans, Ashhar and Jack (all experts) are
forging ahead on new SDR designs and all of them are
great resources for practical knowledge. As well as
some nice kits coming along, so it seems.
>
> Tom, wb6b
>
|
Re: New kit: QDX - Digital Transceiver by QRP Labs
From the QDX page:
QDX is out of stock. We will endeavour to source more ICs but do not have an estimated availability date, due to the global semiconductor crisis, sourcing ICs is very difficult right now. Please follow the QRP Labs discussion group on groups.io for updates.?
Source:?
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On Oct 11, 2021, at 16:16, Laurence Oberman <oberman.l@...> wrote:
? Yep. I jumped on and they are all gone I hope we can pre-order for the next batch.
Hans,? Are you taking pre-orders for?the next lot?
Regards
Laurence KB1HKO On Mon, Oct 11, 2021 at 4:10 PM barry halterman < kthreebo@...> wrote: I guess he sold them all in less then 10 minutes.
On Mon, Oct 11, 2021, 12:26 AM Shirley Dulcey KE1L < mark@...> wrote: FreeDV is a framework that incorporates the Codec2 voice codec and various modems. The usual modems on HF use OFDM modulation; multiple carriers, so not suitable for the QDX.
On Sun, Oct 10, 2021 at 11:59 PM Buddy Brannan < buddy@...> wrote: So¡idle question really, but ¡
Given that this outputs digit modes using a sound card, could it be used for FreeDV? Very narrow digital voice mode:
Pretty interesting if it could. Of course, if it won¡¯t tune past the Digital portions of the band, I guess the point is moot, but still, idly curious.
Buddy Brannan, KB5ELV - Erie, PA
Email: buddy@...
Mobile: (814) 431-0962
> On Oct 10, 2021, at 7:08 AM, Tom, wb6b <wb6b@...> wrote:
>
> On Sat, Oct 9, 2021 at 07:52 AM, Hans Summers wrote:
> The main QRP Labs page is
> I just read the "draft" manual. So many good ideas for practical designs already worked out by an expert. Hans, Ashhar and Jack (all experts) are forging ahead on new SDR designs and all of them are great resources for practical knowledge. As well as some nice kits coming along, so it seems.
>
> Tom, wb6b
>
|
Re: New kit: QDX - Digital Transceiver by QRP Labs
With the chip shortage, we might be waiting quite a long time. Bummer... Barry
On Mon, Oct 11, 2021, 4:17 PM Ken Hansen < ken@...> wrote: Yes - I placed an order as soon as selling opened up (440 available), as soon as my order was completed they were gone.
I ordered two, and FedEx was cheaper than postal.
Looks like a fun kit. Ken, N2VIP On Oct 11, 2021, at 16:10, barry halterman <kthreebo@...> wrote:
? I guess he sold them all in less then 10 minutes. On Mon, Oct 11, 2021, 12:26 AM Shirley Dulcey KE1L < mark@...> wrote: FreeDV is a framework that incorporates the Codec2 voice codec and various modems. The usual modems on HF use OFDM modulation; multiple carriers, so not suitable for the QDX.
On Sun, Oct 10, 2021 at 11:59 PM Buddy Brannan < buddy@...> wrote: So¡idle question really, but ¡
Given that this outputs digit modes using a sound card, could it be used for FreeDV? Very narrow digital voice mode:
Pretty interesting if it could. Of course, if it won¡¯t tune past the Digital portions of the band, I guess the point is moot, but still, idly curious.
Buddy Brannan, KB5ELV - Erie, PA
Email: buddy@...
Mobile: (814) 431-0962
> On Oct 10, 2021, at 7:08 AM, Tom, wb6b <wb6b@...> wrote:
>
> On Sat, Oct 9, 2021 at 07:52 AM, Hans Summers wrote:
> The main QRP Labs page is
> I just read the "draft" manual. So many good ideas for practical designs already worked out by an expert. Hans, Ashhar and Jack (all experts) are forging ahead on new SDR designs and all of them are great resources for practical knowledge. As well as some nice kits coming along, so it seems.
>
> Tom, wb6b
>
|
Re: New kit: QDX - Digital Transceiver by QRP Labs
Yes - I placed an order as soon as selling opened up (440 available), as soon as my order was completed they were gone.
I ordered two, and FedEx was cheaper than postal.
Looks like a fun kit. Ken, N2VIP
toggle quoted message
Show quoted text
On Oct 11, 2021, at 16:10, barry halterman <kthreebo@...> wrote:
? I guess he sold them all in less then 10 minutes. On Mon, Oct 11, 2021, 12:26 AM Shirley Dulcey KE1L < mark@...> wrote: FreeDV is a framework that incorporates the Codec2 voice codec and various modems. The usual modems on HF use OFDM modulation; multiple carriers, so not suitable for the QDX.
On Sun, Oct 10, 2021 at 11:59 PM Buddy Brannan < buddy@...> wrote: So¡idle question really, but ¡
Given that this outputs digit modes using a sound card, could it be used for FreeDV? Very narrow digital voice mode:
Pretty interesting if it could. Of course, if it won¡¯t tune past the Digital portions of the band, I guess the point is moot, but still, idly curious.
Buddy Brannan, KB5ELV - Erie, PA
Email: buddy@...
Mobile: (814) 431-0962
> On Oct 10, 2021, at 7:08 AM, Tom, wb6b <wb6b@...> wrote:
>
> On Sat, Oct 9, 2021 at 07:52 AM, Hans Summers wrote:
> The main QRP Labs page is
> I just read the "draft" manual. So many good ideas for practical designs already worked out by an expert. Hans, Ashhar and Jack (all experts) are forging ahead on new SDR designs and all of them are great resources for practical knowledge. As well as some nice kits coming along, so it seems.
>
> Tom, wb6b
>
|
Re: New kit: QDX - Digital Transceiver by QRP Labs
Yep. I jumped on and they are all gone I hope we can pre-order for the next batch.
Hans,? Are you taking pre-orders for?the next lot?
Regards
Laurence KB1HKO
On Mon, Oct 11, 2021 at 4:10 PM barry halterman < kthreebo@...> wrote: I guess he sold them all in less then 10 minutes.
On Mon, Oct 11, 2021, 12:26 AM Shirley Dulcey KE1L < mark@...> wrote: FreeDV is a framework that incorporates the Codec2 voice codec and various modems. The usual modems on HF use OFDM modulation; multiple carriers, so not suitable for the QDX.
On Sun, Oct 10, 2021 at 11:59 PM Buddy Brannan < buddy@...> wrote: So¡idle question really, but ¡
Given that this outputs digit modes using a sound card, could it be used for FreeDV? Very narrow digital voice mode:
Pretty interesting if it could. Of course, if it won¡¯t tune past the Digital portions of the band, I guess the point is moot, but still, idly curious.
Buddy Brannan, KB5ELV - Erie, PA
Email: buddy@...
Mobile: (814) 431-0962
> On Oct 10, 2021, at 7:08 AM, Tom, wb6b <wb6b@...> wrote:
>
> On Sat, Oct 9, 2021 at 07:52 AM, Hans Summers wrote:
> The main QRP Labs page is
> I just read the "draft" manual. So many good ideas for practical designs already worked out by an expert. Hans, Ashhar and Jack (all experts) are forging ahead on new SDR designs and all of them are great resources for practical knowledge. As well as some nice kits coming along, so it seems.
>
> Tom, wb6b
>
|
Re: New kit: QDX - Digital Transceiver by QRP Labs
I guess he sold them all in less then 10 minutes.
On Mon, Oct 11, 2021, 12:26 AM Shirley Dulcey KE1L < mark@...> wrote: FreeDV is a framework that incorporates the Codec2 voice codec and various modems. The usual modems on HF use OFDM modulation; multiple carriers, so not suitable for the QDX.
On Sun, Oct 10, 2021 at 11:59 PM Buddy Brannan < buddy@...> wrote: So¡idle question really, but ¡
Given that this outputs digit modes using a sound card, could it be used for FreeDV? Very narrow digital voice mode:
Pretty interesting if it could. Of course, if it won¡¯t tune past the Digital portions of the band, I guess the point is moot, but still, idly curious.
Buddy Brannan, KB5ELV - Erie, PA
Email: buddy@...
Mobile: (814) 431-0962
> On Oct 10, 2021, at 7:08 AM, Tom, wb6b <wb6b@...> wrote:
>
> On Sat, Oct 9, 2021 at 07:52 AM, Hans Summers wrote:
> The main QRP Labs page is
> I just read the "draft" manual. So many good ideas for practical designs already worked out by an expert. Hans, Ashhar and Jack (all experts) are forging ahead on new SDR designs and all of them are great resources for practical knowledge. As well as some nice kits coming along, so it seems.
>
> Tom, wb6b
>
|
Re: ?BITX on 70MHz (4mtrs) UK/EU Band ?
#ubitxv6
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Show quoted text
I believe that changing the 30MHz low pass filter to a 70MHz band pass filter and modifying the code to allow 4m operation should be enough to have a 4m exiter and receiver.
Naturally the PA would need to be rebuilt and on 4m one would want a preamp.
There's also the qustion if the 45MHz IF will cause any funky things.?
It is 70MHz/2 after all.
But the frontend mixer should be perfectly fine on 4m.
That said, I do have one of those Ukranian transverters waiting proper installation into a case.
|
Re: ?BITX on 70MHz (4mtrs) UK/EU Band ?
#ubitxv6
I believe that changing the 30MHz low pass filter to a 70MHz band pass filter and modifying the code to allow 4m operation should be enough to have a 4m exiter and receiver.
Naturally the PA would need to be rebuilt and on 4m one would want a preamp.
There's also the qustion if the 45MHz IF will cause any funky things.?
It is 70MHz/2 after all.
But the frontend mixer should be perfectly fine on 4m.
That said, I do have one of those Ukranian transverters waiting proper installation into a case.
|
Re: TSW's remake of our Teensy 4.1 Raduino Clone firmware
#ubitxv6
Hi Ken, The TSW kit is a replacement for the factory Raduino that's included with a uBITX.? Our kit uses the original factory 2.8" TFT color touch display and you have to order a Teensy 4.1 from either PJRC.com or one of their distributors separately.? We can't sell the Teensy with the kit as we are not distributors for PJRC and we have to pay full retail for them ourselves.? If you do, order the Teensy without pins as it has to mount upside down on the back of the T4.1 Raduino PCB just like the NANO does on the factory PCB.
Once you build the kit, install the Teensy 4.1 and flash the firmware, it takes the place of the Factory's Raduino and VASTLY improves the operation.
The KB/Mouse option needs the addition of a USB type "A" female to 5 pin Dupont female cable for USB "Host" mode, available very inexpensively from PJRC.com and you will need to replace the original USB type B "Mini" with a type B "Micro" extension cable between the MPU and back panel.? These should be about 1 foot long and are available from various sources including Amazon.
Hope I've answered your questions.
Jim - W0EB
------ Original Message ------
Sent: 10/11/2021 9:59:18 AM
Subject: Re: [BITX20] TSW's remake of our Teensy 4.1 Raduino Clone firmware #ubitxv6
Jim,
Excellent work, kudos to all involved!
I have drifted away from the uBitx 'scene' for a while and find myself confused about what is involved in taking advantage of your work here, could you describe, at a high-level, what's involved is loading this software onto one's 'stock' uBitx v6?
From my reading of your attached manual it appears I need to secure a "teensy 4.1" and replace the stock raduino with the "teensy 4.1", and with your software installed I should be good to go.
There also appears to be an option to add external keyboard/mouse support to allow controlling the radio without touching the front panel.
Am I understanding the process correctly? Would a "simple" (my word) swap for the Teensy 4.1 suffice, or would I need something else to take advantage of what your updated software offers?
Thanks, Ken, N2VIP On Oct 10, 2021, at 11:53, Jim Sheldon <w0eb@...> wrote:
?TSW has been busy switching to a new display font and reworking the firmware manual as well as improving several of the functions of the TSW T4.1 Raduino Clone firmware.? We believe this is complete and the very latest version has been posted to the TSW website's file section () for download by anyone that has the T4.1 Raduino Clone or is contemplating getting one.? We also included W2CTX's "TSWSETTIME" program in the zip file.? This allows setting the "Real Time Clock" more precisely and if the battery backup option is installed the RTC will keep decent time during the periods the uBITX V6 is turned off.??? -- NO, we have not provided for NEXTION screen usage with the Teensy 4.1 and will never do this as it is a known RFI generator so we refuse to support the NEXTION --
The firmware manual is attached here so you all can read it if you like - more info and ordering information for the T4.1 Raduino Clone is on the TSW website.
Thanks for your interest,
Jim - W0EB
TSW Engineer/Project Coordinator
|
Re: TSW's remake of our Teensy 4.1 Raduino Clone firmware
#ubitxv6
Jim,
Excellent work, kudos to all involved!
I have drifted away from the uBitx 'scene' for a while and find myself confused about what is involved in taking advantage of your work here, could you describe, at a high-level, what's involved is loading this software onto one's 'stock' uBitx v6?
From my reading of your attached manual it appears I need to secure a "teensy 4.1" and replace the stock raduino with the "teensy 4.1", and with your software installed I should be good to go.
There also appears to be an option to add external keyboard/mouse support to allow controlling the radio without touching the front panel.
Am I understanding the process correctly? Would a "simple" (my word) swap for the Teensy 4.1 suffice, or would I need something else to take advantage of what your updated software offers?
toggle quoted message
Show quoted text
On Oct 10, 2021, at 11:53, Jim Sheldon <w0eb@...> wrote:
?TSW has been busy switching to a new display font and reworking the firmware manual as well as improving several of the functions of the TSW T4.1 Raduino Clone firmware.? We believe this is complete and the very latest version has been posted to the TSW website's file section () for download by anyone that has the T4.1 Raduino Clone or is contemplating getting one.? We also included W2CTX's "TSWSETTIME" program in the zip file.? This allows setting the "Real Time Clock" more precisely and if the battery backup option is installed the RTC will keep decent time during the periods the uBITX V6 is turned off.??? -- NO, we have not provided for NEXTION screen usage with the Teensy 4.1 and will never do this as it is a known RFI generator so we refuse to support the NEXTION --
The firmware manual is attached here so you all can read it if you like - more info and ordering information for the T4.1 Raduino Clone is on the TSW website.
Thanks for your interest,
Jim - W0EB
TSW Engineer/Project Coordinator
|
Re: ?BITX on 70MHz (4mtrs) UK/EU Band ?
#ubitxv6
Steve, There is a kit (or you can just buy the pcb) produced by Sam, G4DDK.? I have no connection with him other than having bought one of his boards. Another possibility is look at the io group [email protected]? This group is run by Chris Bryant, G3WIE.? This is more up to you how you go about it, and might mean getting your own board made from a loow cost pcb supplier. I think all the necessary information is there if you want to built it.? Tony G4CIZ
|
TSW Price Reduction on the Teensy 4.1 Raduino Clone Kit
#ubitxv6
FYI, we've closely calculated current parts costs plus labor to solder the 5351 chip on the kit's PCB and check all connections.? We found that we can sell the full kits for $35 USD (this is a kit, less the Teensy 4.1 and display) if we have the user pay the shipping (due to current increases in mailing/shipping costs by USPS and the various courier services we have to use).
There are some restrictions for international customers, and these are spelled out on the TSW website main page () as well as ordering information.
Thanks for looking,
Jim - W0EB
TSW Project Coordinator
|
Re: New kit: QDX - Digital Transceiver by QRP Labs
FreeDV is a framework that incorporates the Codec2 voice codec and various modems. The usual modems on HF use OFDM modulation; multiple carriers, so not suitable for the QDX.
On Sun, Oct 10, 2021 at 11:59 PM Buddy Brannan < buddy@...> wrote: So¡idle question really, but ¡
Given that this outputs digit modes using a sound card, could it be used for FreeDV? Very narrow digital voice mode:
Pretty interesting if it could. Of course, if it won¡¯t tune past the Digital portions of the band, I guess the point is moot, but still, idly curious.
Buddy Brannan, KB5ELV - Erie, PA
Email: buddy@...
Mobile: (814) 431-0962
> On Oct 10, 2021, at 7:08 AM, Tom, wb6b <wb6b@...> wrote:
>
> On Sat, Oct 9, 2021 at 07:52 AM, Hans Summers wrote:
> The main QRP Labs page is
> I just read the "draft" manual. So many good ideas for practical designs already worked out by an expert. Hans, Ashhar and Jack (all experts) are forging ahead on new SDR designs and all of them are great resources for practical knowledge. As well as some nice kits coming along, so it seems.
>
> Tom, wb6b
>
|
Re: New kit: QDX - Digital Transceiver by QRP Labs
So¡idle question really, but ¡
Given that this outputs digit modes using a sound card, could it be used for FreeDV? Very narrow digital voice mode:
Pretty interesting if it could. Of course, if it won¡¯t tune past the Digital portions of the band, I guess the point is moot, but still, idly curious.
Buddy Brannan, KB5ELV - Erie, PA
Email: buddy@...
Mobile: (814) 431-0962
toggle quoted message
Show quoted text
On Oct 10, 2021, at 7:08 AM, Tom, wb6b <wb6b@...> wrote:
On Sat, Oct 9, 2021 at 07:52 AM, Hans Summers wrote:
The main QRP Labs page is
I just read the "draft" manual. So many good ideas for practical designs already worked out by an expert. Hans, Ashhar and Jack (all experts) are forging ahead on new SDR designs and all of them are great resources for practical knowledge. As well as some nice kits coming along, so it seems.
Tom, wb6b
|
The wire is 66 ft long with a loading coil and a balun. The variable capacitor I have is 10 inches long with 240/31 capacitor. There¡¯s another value on the cap. 154/16 Thanks everyone!!
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On Oct 10, 2021, at 2:34 PM, Arv Evans <arvid.evans@...> wrote:
? Steve
I use an LC network to load a 55 foot end-fed wire for an original BITX,
and for my uBITX.? The inductor is a roller coil from an ARC-5 transmitter. This with a Stockton bridge for SWR management lets me operate on
almost any band.?
If an adequate variable capacitor is not available, one can be fabricated from
blank PCB material.? It is also possible to use several fixed value capacitors to tune just above each band and make a small variable cap to get lowest
reflected power on each band.
Several on this group have built stepper motor activated antenna tuners, and
a few have built DC motor tuners.? Most of these use an Arduino to manage
the tuner.
Arv _._
Hope I¡¯m not duplicating a previous feed. I¡¯m using an end-fed 40-10 antenna. I have a very high voltage variable capacitor that I would like to incorporate for remote tuning. I can create a waterproof box for the capacitor,motor, etc. has this been done?? What about parts?? Thanks to the groups!!? You¡¯ve taught me lots!!
|
Steve
I use an LC network to load a 55 foot end-fed wire for an original BITX,
and for my uBITX.? The inductor is a roller coil from an ARC-5 transmitter. This with a Stockton bridge for SWR management lets me operate on
almost any band.?
If an adequate variable capacitor is not available, one can be fabricated from
blank PCB material.? It is also possible to use several fixed value capacitors to tune just above each band and make a small variable cap to get lowest
reflected power on each band.
Several on this group have built stepper motor activated antenna tuners, and
a few have built DC motor tuners.? Most of these use an Arduino to manage
the tuner.
Arv _._
Hope I¡¯m not duplicating a previous feed. I¡¯m using an end-fed 40-10 antenna. I have a very high voltage variable capacitor that I would like to incorporate for remote tuning. I can create a waterproof box for the capacitor,motor, etc. has this been done?? What about parts?? Thanks to the groups!!? You¡¯ve taught me lots!!
|
I know.
What I meant if the RDs are factory installed
On Sat, Oct 9, 2021 at 3:27 PM Ashhar Farhan < farhanbox@...> wrote: The ubitx does have the rd15hfv1 footprints.
On Sat, Oct 9, 2021, 4:34 PM Lawrence Galea < 9h1avlaw@...> wrote: Good afternoon Farhan He uses the RD16HHF1 up to 70MHz but then changes to RD15HVF1 on 144MHz to? 432MHz
TX Output transistor -?RD16HHF1
 ?TX Output transistor -?RD16HHF1
?TX Output transistor -?RD15HVF1
?TX Output transistor -?RD15HVF1
It would push up the cost of the mbitx?if they?were used and could use the same 12V supply for more output. but it would be less likely to blow the finals Regards Lawrence
On Fri, Oct 8, 2021 at 5:14 PM Ashhar Farhan < farhanbox@...> wrote: He uses RD15HVF1 in the transverters as Sarmaji had recommended.?
On Fri, Oct 8, 2021, 8:40 PM Lawrence Galea < 9h1avlaw@...> wrote: I have two transverters and they both use the RD16HHF1. I have worked barefoot with them on both 50 and 70 MHz and I believe that he uses the same RD16HHF1 on the 144 MHz one
I built an amp almost identical to this one. I used the RD16HFF1 mosfets. It gave between 16 and 20W output from 80m to 10m, and 6W output on 6m. During sporadic E I worked several thousand km on SSB with the 6 watts, and it should be sufficient for a larger amplifier.? Here in the UK was also have &0 MHz (4 metres) but I didn't try these mosfets on that band.
Tony, G4CIZ
|
Thanks Scott. The wire is 66 feet with a balun and loading coil at proximal end. The capacitor is 32-241 and is 10 inches long.? KE7GO? Steve Behlmer
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On Oct 10, 2021, at 12:18 PM, Scott McDonald <ka9pscott@...> wrote:
? Steve, how long is your antenna, and how many pF is your cap?
Scott Ka9p Hope I¡¯m not duplicating a previous feed. I¡¯m using an end-fed 40-10 antenna. I have a very high voltage variable capacitor that I would like to incorporate for remote tuning. I can create a waterproof box for the capacitor,motor, etc. has this been done?? What about parts?? Thanks to the groups!!? You¡¯ve taught me lots!!
|
Steve, how long is your antenna, and how many pF is your cap?
Scott Ka9p
Hope I¡¯m not duplicating a previous feed. I¡¯m using an end-fed 40-10 antenna. I have a very high voltage variable capacitor that I would like to incorporate for remote tuning. I can create a waterproof box for the capacitor,motor, etc. has this been done?? What about parts?? Thanks to the groups!!? You¡¯ve taught me lots!!
|
Ismo V??n?nen OH2FTG
Jim Sheldon
Shirley Dulcey KE1L