Digi Lite, Rasp 3b + Unipager

[KC2NJV]

I want to use the Pi 3b as a POSCAG/DAPNET transmitter.
I purchased the FTM 9600 baud cable (which research says it doesn’t matter) and have the black lead into the Digirig.

The Pi finds the Digirig on Device 2, and can play and receive on it.
alsamixer -c 2
aplay -l
arecord -l

Unipager has 3 config panels.

1. Transmitter. I selected AUDIO
2. Audio Config - I picked ALSA device 2, max audio level, inverted and a TX delay of 5ms
3. PTT Config, This is where I’m stuck.

Also getting this error when I hit TEST

May 27 19:39:29 POCSAG-PLNVW unipager[518]: INFO - Initializing audio transmitter…
May 27 19:39:29 POCSAG-PLNVW unipager[518]: thread ‘’ panicked at ‘Unable to open serial port: Error { kind: NoDevice, description: “No such file or directory” }’, libcore/result.rs:945:5

Fixed an error where the serial-getty@ttyUSB0 service wasn’t enabled.

[royord]

For me the PTT shows up as /dev/hidraw0 maybe you’ll find something similar, let me know how it goes.

How to use DigiRig Lite with SVX Link (echolink)

Installing SVXLink on Raspberry Pi The following are instructions needed to get SVXLink up and running on a raspberry pi with connections being run through the DigiRig Lite. I hope that these instructions will help someone create their own EchoLink connection to their local repeater as this does for me. My Setup: [Yaesu FT-70D] - Link Removed DigiRig Lite Yaesu HT Audio/PTT Cable Raspberry Pi 3 Model B+ - I think that newer would work however I did have some issues with the DigiRig Lite not…

[KC2NJV]

Got this from DapNet:

Ah, that makes sense. First of all I’m not familiar with the Digirig. But it looks like a kind of USB to audio which also triggers PTT as well. As you’ve described no audio reaches the radio. In that case the Digirig won’t work with Unipager. Unipager is not written for that kind of interfaces. If you get it working, you’re lucky.

Unipager with the audio interface option requires a very low tech interface like shown here ft8500 [DAPNET DokuWiki] . Audio of the Raspberry is decoupled and led to the 9k6 input of the radio. Any other input (microphone or 1k2) won’t work as POCSAG is an FSK mode (not AFSK). Furthermore triggering the PTT can also be done with a simple open collector circuit as described in the same Wiki article.

Easiest way to test whether or not Unipager bumps out a signal: connect a speaker of headphones to the audio connector.

[royord]

I’m working on standing up a dapnet server to test against and look at the interface and see if there’s anything that I can do.

[royord]

I’ve spent a number of hours trying to get the application to run, is there a newer build someplace other than unipagerenglish [DAPNET DokuWiki]. Maybe you have newer instructions someplace?

[KC2NJV]

According to the DAPNET guys, no.

[royord]

Wow, what a bummer, maybe there’s someone out there willing to take over the project a bit more to modernize it as it seems quite dated. I was getting a rust error when trying to do the install myself.

I want to look into this further but haven’t found a machine or sufficient instructions to get it off the ground enough.