The obvious questions are frequency, Vara configuration, operable RMS station.
Have you had a successful Vara connection before, maybe a different radio / different station?
Mark is spot on about being able to hear your own signal, sans that, what does your Vara dashboard tell you? I have always had an issue trying to use a Digirig and a HT, Digi seems to run hot on some models and you have to alter one of the pads on the board.
Do you know anyone else that can confirm the RMS is operational? They can also help confirm your signal is being transmitted.
Are there other Vara stations out there for you to try? If you know of other operators you can try to ping their Vara software directly with Winlink P2P or even just in a digipeater mode.
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