UZ7HO Soundmodem and EXT PTT

[K0TX]

Awesome, thanks for the report.
Can you share the screenshots of the configuration that worked?

[KF7R]

This works with Soundmodem

This with Vara FM for PTT and Input/Output

[K0TX]

Thanks for the info!

[KF7R]

You’re welcome!

Here is a screenshot of last pass of satellite IO-117 using the Digirig Light. Had no problem decoding packets but I did notice that the reported signal quality from the Greencube Terminal was a bit less stable than with the Digirig.

[KF7R]

Working on WSJT-X using FLRig as the CAT device. PTT working on both Windows and on Raspberry Pi. On Raspberry Pi by creating a file named cmedia.rules in /etc/udev/rules.d/ containing the following:

KERNEL==“hidraw*”,
SUBSYSTEM==“hidraw”,MODE=“0664”,GROUP=“plugdev”

[K0TX]

There appears to be a number of people who like the current prototype form factor and this can remain an option, but my vision was for this to become a mobile-friendly cable and I now found a suitable enclosure.

Soliciting your feedback on this:

Likely with include ferrites and USB-A adapter for expanded connectivity options:

[AG7GN]

Denis,

The prototype enclosure looks great. The settings in various apps to use the new GPIO PTT are the same when using the Masters Communications RA-series sound cards.

Steve
AG7GN

[KF7R]

I like the idea, specially if it comes with ferrites.

[wh6az]

Would there be an option to use one of the audio channel as a trigger for PTT (i.e. send a tone to trigger PTT)? The CM108 PTT GPIO 3 pin tricks works because that chip is seen as USB HID device. It’s unclear if that will work too on a iOS devices without jumping thru hoops. It would be interesting to have an audio interface only solution to both audio signal and PTT.

[MrMagumba]

Most of this is over my head, but the one thing I have run into with the Digirig is that it is not stereo. Running left and right audio into the traditional Digirig and having the two audio jacks would allow one Digirig to run two radios with Soundmodem channels A and B. I am doing this with a junky stereo USB soundcard and audio cables to two separate interfaces for simultaneous VHF and HF packet ops. I’ve seen L and R channel options in other software that might be able to take advantage as well. Just a thought. Thanks.
Paul, KF9CP

[AG7GN]

I received a DigiRig Lite today. What a great little device! It works fine with Fldigi. Someone else posted about setting the permissions in a udev rule for Linux so the GPIO PTT will work. That procedure applies no matter what Linux you’re using or what app you are using with the DigiRig Lite.

Here are the settings I used in Windows for the DigiRig Lite. Note I changed the name of the card to CM108. You’ll need to adjust the playback and record levels for your situation.

And here are the Fldigi settings for the sound card and PTT:

-Steve

[AG7GN]

Just tested the DigiRig Lite with Fldigi on MacOS 14.4.1. It works as expected. Here’s the audio setup for the DigiRig Lite on a Mac (same as for the regular DigiRig). I set the audio input and output levels to 0dB and adjust as necessary for your application/radio.

1. Open the Audio MIDI Setup app on the Mac.
2. Connect the DigiRig (regular or Lite) to a serial port. A USB Audio Device will appear in the left column in the Audio MIDI Setup window.
3. Adjust the input and output levels as shown here. This is a starting point. You’ll likely need to tweak these for your rig.

The C-Media GPIO PTT settings in Fldigi for the DigiRig Lite are the same for the Mac as they are for Windows (see my earlier post).

[KF7R]

I jjust got word from Andrew (VA7YAA) that WoAD (Winlink on Android) has been updated and is now able to use the CM108 GPIO for PTT. I just tested it on a vintage Yaesu FT-530 and was able to connect to the Winlink Gateway in Green Valley, Arizona.

The latest Android APK can be downloaded here https://woad.sumusltd.com/ or you can wait a few days for it to be updated in the Play Store.

[K0TX]

Intro by Jason:

Digirig Lite is Half the Size

Josh posted a detailed VaraFM tutorial:

Sending Emails With A Ham Radio Handheld & Digirig Lite

Looks like I may be moving the spelling of the name to “Digirig Lite”

[Intrvideo]

I’m having an issue with Winlink and Soundmodem using “Packet Winlink”. The soundmodem test works fine setup the same as above, but I can’t find how to setup the window that is circled in red to use the soundmodem settings. What TNC do I pick from the menu? It works fine in Vara FM, but I don’t have any VARA sites I can reach from my location. 73 Dave

[Constrainted]

I use soundmodem for Winlink Packet. I use the left hand side, 1200 Baud, and the corresponding setting in soundmodem modem configuration. Your packet TNC selection looks OK.

By the way are you using Digirig-lite?

73 Constrainted

[Intrvideo]

Yes, sorry for not saying that to begin with. I have other digirigs that work fine. It’s the GPIO in packet winlink I’m having the problem.

[Bill-KM6SLF]

The enclosure K0TX made looks great! I whipped up a 3d printable enclosure for myself until it becomes available. I shared the design on Thingiverse and Makerworld.

Digirig Lite enclosure by km6slf - Thingiverse

Digirig Lite enclosure by Bill KM6SLF

[N5XHI]

I like this case with the USB-C. It will work great with my Samsung A32 phone and WoAD software. I purchased a USB-C to USB-C cable from you to use my Digirig Mobile with the A32 and WoAD. It works great It will be nice to have a smaller package for my HT or Go-Kit.

[KF7R]

Thank you so much for posting this!

I tweaked the model a bit in order to allow it to be printed on the other face with the letters as negative objects.

73!