[hpsdr] VAC anomaly on RX2

[Erik Skovgaard]

Hi Brian,

Have you tried the balance slider?

When I use fldigi I use one audio channel and have voice on the other
channel.  When I want to listen to the digital signal I just move the
balance slider until the audio is comfortable.

73 de ve7mdl,        ....Erik.
 On Mar 7, 2013 5:20 PM, "Brian Lloyd" <brian at lloyd.com> wrote:

> ***** High Performance Software Defined Radio Discussion List *****
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> On Thu, Mar 7, 2013 at 3:18 PM, Doug W5WC <w5wc at windstream.net> wrote:
>
>> Brian,
>>
>> The "Master AF" does not affect the VAC channels. The "RX1 AF" and "RX2
>> AF"
>> controls do affect the VAC channels because they control the corresponding
>> preamps in DttSP. And DttSP occurs before VAC in the audio chain. If you
>> are
>> using VAC with raw I/Q then there is no affect from these gain controls.
>>
>
> Yeah, I figured that out. It is amazing what one can learn when one tries
> things out. :-)
>
> IMHO the only gain control that should have an effect is the gain control
> for the VAC output, not the sliders. That means that they need to be fixed
> in the 100% position and the audio level only adjusted with the master gain
> control.
>
> But my thinking is that I may want to mute the speaker audio for RX1 while
> continuing to listen to speaker audio for RX2. But I want my decoder, e.g.
> fldigi, that is attached to the RX1 VAC channel to continue decoding. So
> how to I mute RX1 speaker audio while still having RX2 speaker audio, and
> still have my IF stream going out VAC1 to my CODEC? I don't see a way to do
> this as it is currently set up. That seems broken to me but it is just more
> likely that I am confused and you have a solution for me.
>
> Thank you for replying.
>
> --
> Brian Lloyd, WB6RQN/J79BPL
> 3191 Western Dr.
> Cameron Park, CA 95682
> brian at lloyd.com
> +1.767.617.1365 (Dominica)
> +1.916.877.5067 (USA)
>
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