(tr)uSDX with flrig and fldigi

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Posts: 18
Joined: 06 Sep 2022, 01:11

(tr)uSDX with flrig and fldigi

Post by n4rg »

Is anyone using the programs flrig and fldigi with the (tr)uSDX?

Are you having problems with the digital modes (specifically PSK31)?

When using the software and I put it in transmit mode, send the text, then go back to receive the radio “hangs up” and the receive audio is very very low. When I do an knit (using flrig) the audio comes back like normal.

Anyone else?

Posts: 31
Joined: 29 Aug 2022, 16:43
Location: Zurich, Switzerland

Re: (tr)uSDX with flrig and fldigi

Post by HB9HJF »

Are you providing line-level or headphone-level input to the transceiver?

Most of those that are using a soundcard to interface with the transceiver are making sure to not overload the input as a headphone output is far too high a voltage range for the microphone circuit not to clip on input, and the output from the transceiver is a headphone-level output so you'll have to ensure that you are either voltage-dividing approipriately or are operating at a volume level where you're not clipping.

I.e. the problem is less likely with the transceiver, and far more likely with the soundcard levels on input and output.
-- Cathal Ferris.
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