[arm-allstar] Allstar Link Audio

[Doug Crompton]

Lonny,

 You use simpleusb-tune-menu to set.  Item 2.  Talk to your node and watch
the bar graph, It should go up to 4-5khz and not beyond. Also item B the
boost can be set or unset to raise or lower gain levels. It turning off
boost and putting the item 2 value down to single digits does not lower it
enough you will have to do it manually in hardware by using a voltage
divider on the input to the FOB from your receiver.  If the input level is
too high it will overload the input of the FOB and the level will not
correct that.

In the opposite direction (what you hear) item 3 changes the level. There
is no boost for that so again if the level is too high you will have to use
a resistive divider to lower it.

A voltage divider consists of a series resistor and a resistor to ground.
If you need to do this you could start with 10K resistors. 10K from the
radio and 10K to ground on the FOB side would be a place to start.


*73 Doug*

*WA3DSP*

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

On Mon, Oct 15, 2018 at 10:07 PM "Lonny Barry via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> My audio from the allstar link is way over driven. I'm trying to figure out
> what setting would correct this?
>
> Node :
>
> RPi 3b+ / Asterisk 1.5.3_42   <--> RIM Lite USB Fob <- DB9 -> UV-5r Plus
>
> HT and IAXrpt on Android
>
> Put the node in Parrot mode not connected to any other node.
>
> Key the HT and tx "Audio Test"
>
>      crystal clear audio at perfect levels.
>
> Force the node to Say the Time, or Force ID
>
>      crystal clear audio at perfect leves
>
> Key the IAXrpt on the android and the HT returns audio so over driven its
> barely readable.
>
> RX level set at 400
>
> TX A and B both at 400
>
> rxboost disabled.
>
> What else? What have I not thought of?
>
> Thanks in advance.
>
> Lonny
> KG5IGJ / 48448
> Lake Jackson, TX
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