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TX test with no luck. My RX S meter on WSJT is jumping.

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Thanks, Hotoshi-san,

After VB-Cable reinstall, I think the PC software works normal now. The next step is I will transmit something, before I actually rework the board to enable the RX.

Thanks,

Adam

Hi Adam

In addition, trusdr-audio forces the use of ports "com8" and "com9".　
Therefore, if these port numbers are already in use, you must use the Windows control panel to change the already used com8
and com9 to another com#.

Hitoshi, JE1RAV

Hi Adam,

I am not using Windows 7, but I suspect that "VBcable" is not installed properly.
Please try reinstalling it.
Testing the firmware of the ADX-S itself may be possible with the rig setting "(tr)uSDX (audio over cat)" on FT8CN.

For WSJT setting of PC, both TS2000 and TS480 are working in my case.
Com# should be set to "com8"

Hitoshi, JE1RAV

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Hi JE1RAV,

I tried this morning. Your firmware compiled okay and I downloaded to an Arduino Nano module. I downloaded the Windows version software. It deleted my existing VSPE for upgrade but failed, because I am using Win 7. So I manually downloaded an old version for legacy system. Now I can run both software on PC, but I cannot find Cable IN or OUT audio devices in my device manager, so my WSJT cannot use. The CAT didn't work, either, I suppose it should be configured to TS-480. Any clue please?

Thanks,

Adam

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Also, check if there is any power out between 74ACT244 and BS170. The 21 and 28MHz should give about 1 watt.

Thanks,

Adam

Do you have a method of checking the filters?? Like a nanovna?? You'd have to build a fixture for that but there is almost adequate information out there to do that properly.? The BS-170s are pretty terrible at the higher frequencirs but you should get some power out of them.

Fred W0FMS

Hello group,

I've assembled the ADX-S kit from crkits.com. The construction manual is well written and gives excellent advice during the process. Everything worked the first time.

RF output from my ADX-S between 7 MHz and 18 MHz is fine (2-3 W), but there is no output from 21 MHz and above.

I've tried the following to rectify the power problem:?

• Matched 3 x BS170 from at batch of 12. Matching parameter Vgs. No change.
• Swapped the 3 x BS170 with 3 x 2N7000 (they were matched from a batch of 10). No change
• Bypass C22 and remove D6 and R12. No change

What to do now?

73 from OZ1BXM Lars Petersen

Good to know it could be done.? I actually considered this very idea but ultimately decided against it because I can get a C-Media usb sound card for like $4 here (which I did and a hub and a usb to go adapter). My experience with FT8CN and that driver on my trusdx has been very buggy.? Still the code to do it looks simpler that I thought to do it, much more simple.? On a PC that driver has been rock solid, so I could see people doing this for an ultimate QRP POTA digimode rig or something similar.

Good work.? You almost made me feel like like I should not have given up on that project.? Very nice job.? Maybe I will add the amplifier later to my board and try it.? I am impressed.?

Fred W0FMS?

A diode and resistor to the circuit are the Rf-attenuator mod.?
And, the modification is described in the recent manual of ADX-S.

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Guys,

I am sure that I can catch March 18. You guys can place order through CRKITS.COM and add 10 USD each for additional reworked 5351 module with TCXOM.

Thanks,

Adam

Looks interesting, look forward to hearing the results if Adam’s testing. You also added a diode and resistor to the circuit which is not mentioned in your GitHub post ??

Here is the English translation:?

Remodelling of ADX-S (CRkits Joint Purchase Project)

?

Modify the ADX-S FT8 transceiver (https://jl1kra.sakura.ne.jp/ADX-S.html) distributed in the CRkits joint purchase project and connect the PC with a USB cord I made it one.

?

USB connection with PC by "trusdr-audio"

?

ADX-S is a simple digital mode transceiver ADX developed by WB2CBA in the uSDX project, and BD6CR has remodelled and kitted the receiver into a single supermarket, and distributed in CRkits. Su.

?

On the other hand, for the SDR transceiver uSDX (originally developed by PE1NNZ) that makes full use of the original ATmega328, DL2MAN is developing it as (tr)uSDX with the cooperation of PE1NNZ. ht Tps://dl2man.de/

?

In this (tr)uSDX project, a method has been developed to simultaneously perform Audio signal transmission and CAT with USB serial communication for digital mode.

?

This is called "trusdx-audio" and is realised by the python program on the PC side and the firmware on the (tr)uSDX side.

?

The python program on the PC side is the original version by Olgierd (https://github.com/olgierd/trusdx-audio/ ), PE1NNZ (uSDX firmware developer, Threeme3) has been developed and distributed as a package with an installer for the Windows version.

?

Https://github.com/threeme3/trusdx-audio/ (Please see these pages for details of trusdx-audio.)

?

Using this, I decided to do Audio signal transmission and CAT at the same time with one USB cable in ADX-S as well.

?

The hardware requires the addition of an audio amplifier for ADC input, and the audio amplifier IC was directly wired on the main board.

?

The ADX-S firmware was made by referring to the CAT documentation of (tr)uSDX and the python program of trusdx-audio.

?

The data resolution of "trusdx-audio" is as low as 8 bits, so the input data to the PC is large.

?

For this reason, the WSJT-X input indicator may become red, but there is no problem.

?

If it remains red, try to increase the denominator of the division in line 1175 of the program and make the signal smaller.

?

The reception sensitivity was about the same as when using an audio cable.

?

The specific remodelling is as follows.

?

1. Additional wiring to the ADX-S main board

?

In order to connect the output signal of CD2003 to the ADC terminal of ATmega328P, the audio amplifier is connected between the DET_OUT (pin 11) of CD2003 and the A2 pin (pin 21) of the Arduino Nano compatible board. Insert it.

?

This amplifier is placed between the front side of the main board and the front panel.

?

I used LM386 for the audio amplifier.

?

In order to use 200 times the gain, connect a 10uF capacitor between 1 pin and 8 pins.

?

Connect the 2nd pin to the DET_OUT (11th pin) of CD2003 via a 1uF capacitor.

?

Connect pin 3 and pin 4 to GND, and connect pin 6 to 5V power supply (+5V pin of Arduino Nano).

?

Connect the 5th pin to the A2 pin of the Arduino Nano compatible board (the offset voltage of 1/2 of the power supply voltage is generated, which is ideal for connecting to the ADC).

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Hi JE1RAV,

Thanks for sharing. I have introduced in my wechat blog just now. I will test it myself.

Thanks,

Adam

Gang,

We have added two bare boards for use with our PTO. While I was working on designing the PTO, I used the Norcal Tin Ear circuit for the testing. I have some of these 40m receiver boards available for anyone that wants to experiment with a PTO.

We also have an option 2 to the prototype PTO project. It is a 4.25" sq. board that uses only the TinEar oscillator with 375 pads for your design and expansion. All the power and I/O connections are contained on the board.

Either bard board is available for $12 w/free conus delivery. Both options are described at:

https://qrpbuilder.com/pto-test-bed

Ken - wa4mnt

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Fred,

Looks good. I must expedite the process. I have chance to ship 1 week ahead, that is, March 18.

For those who ordered through web site, if you still wish to order additional reworked 5351 module (1 pcs each person please), you can directly PayPal to rongxh@... at 10 USD each.

Thanks,

Adam

Hot air worked brilliantly and in only a few seconds.? ?Ordered 5 from you.? My hacked up 5032 TXCO on proto board is a tad bit big for the board, so I am looking forward to the purpose built boards!?

Fred Spinner W0FMS?

Guys,

I have made available the green TCXOM instead of the entire module, as I have little time to do the rework myself. You can place order now, 1 or 5 pcs a time, and I will ship no later than March 25.



Thanks,

Adam

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Thanks. Now I have 2 TCXOM left.

Adam,

Perfect. ?I just sent the payment through PayPal.Thanks again!
Tom M
KN6OKY