[arm-allstar] Simple USB

[Doug Crompton]

Tom,

 I assume you mean that you have the bar graph for level setting on RX
audio but nothing on transmit. Here is the reason. On RX it is the audio
which is digitized into the network so it is important for the level to be
correct and also it is a known level. You want it to fill the digital
amplitude limit but never over that limit. Lets say 90% of the limit.  For
the TX level being that it goes to an unknown local transmitter  a level
meter would be meaningless since the attenuation/gain and TX level
requirements AFTER the meter would be unknown. The only way to accurately
set TX level is with a deviation meter or station monitor tuned to your
transmit frequency. Since most would not have either of these available a
good way to set the TX level is to listen to a local repeaters level and
without changing the volume on your radio switch to your node frequency.
The levels should match and there should be no distortion. For a simplex
node this is usually more than adequate.


*73 Doug*

*WA3DSP*

*http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*

On Sun, Aug 4, 2019 at 3:01 PM "Tom Eaton via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> In simple USB we can see the receive audio as a reference is there a way to
> see transmit audio in the same manner and if not could that be implemented.
>
> Tom, KC4CBQ
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