DigiRig on a Smartphone


Is there a way to use Apps like WOAD with DigiRig connected to the smartphone and using it to directly PTT a handheld radio? I am aware some had made FT8CN work, but I am looking to using WOAD or similar apps to access our VHF packet network with requires constant handshaking, so VOX won’t do. I know some functionality should be already built in on the apps, but I am just curious, as it would reduce the hardware to carry during an emergency. Thanks to all!

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WoAD does have PTT by RTS option in the settings under sessions->select session->settings->TNC configuration->PTT USB RTS

Other relevant posts can be found here: Topics tagged software-woad


My present version doesn’t have the PTT option, but I went to the link and got the right version. I am working now on getting it to run, but for some reason, when I plug the DigiRig , APRSdroid gets launched. Is there a way to de-associate the DigiRig from that app? Thanks again!

Fount the relevant setting under
System Settings → Apps and Notifications → WoAD → Open by default → Clear Defaults

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So far so good with WOAD, as far as packet is concerned. I started experimenting with VARA FM and noticed that the setup doesn’t reference the PTT port at all and the TNC Type is only TCP/IP, I don’t think it should be that way, do you?

Thanks de WP3BM

VaraFM is know to work with Digirig and you’ll find the config recommendations in these discussions: Topics tagged software-varafm


Yes VARA FM works when using Winlink, but I think there is an issue with the configuration on WOAD. There is no other option besides TCP/IP, which makes no sense at all.

73, WP3BM

VaraFM modem uses a closed-source protocol and there is no implementation on Android. The only option at this time is to tap a Windows machine over the network and this is the option you see in WoAD config.

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There is a group working on a VARA alternative. I don’t think it’s in even alpha stage though.

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Yes, it’s high on the ham wish list. In one of the interviews The Tech Prepper said that he’ll pay 20K from his channel’s revenue for an open source implementation of Vara.

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Yes, you can use WOAD with DigiRig to PTT your handheld radio and access your VHF packet network directly from your smartphone. Here’s why it works:

  • WOAD supports DigiRig: WOAD has built-in functionality for DigiRig’s PTT via USB RTS. This means the app can control the PTT function of your radio through the DigiRig interface.
  • DigiRig provides audio connection: DigiRig acts as a bridge between your phone and radio. It routes audio signals from WOAD to the radio for transmission and vice versa.
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