[arm-allstar] Simple USB

Stephen Gansky sgansky at me.com
Sun Aug 4 15:17:25 EDT 2019


Doug

I completely agree with what you said but I feel that a “meter” on the TX side would still be helpful.

Steve


Sent from sgansky iPad
(C) 215-990-5300

> On Aug 4, 2019, at 3:12 PM, Doug Crompton via ARM-allstar <arm-allstar at hamvoip.org> wrote:
> 
> 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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