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Re: T41 Transmitting (noise in ssb)


 

In my case it did. A floating ground on that I/Q cable eliminated the low frequency spurs around the carrier.?
The ¡°no talk¡± noise is definitely coming from the audio processing. It also tracks mic gain in my case.?
So I am going to try minimizing the mic gain and driving the mic input harder.?

Larry
KB3CUF?

On Thu, Sep 7, 2023 at 9:53 AM jerry-KF6VB <jerry@...> wrote:
On 2023-09-07 00:43, Harry Brash wrote:

> I¡¯ve since turned off the PA and am feeding a sample of the PA drive
> to my SDRPlay RSP1 SDR receiver using SDRUno.? I¡¯ve turned up the
> mike gain to max (30).? The ¡°no talk¡± noise level is still there

*** Here's an experiment:? Try disconnecting the cable between the main
board and the QSE.
Does the "no talk" noise go away?

? ? ? ? ? ? ? ? ? ? ? ?- Jerry, KF6VB





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