[arm-allstar] Baofeng 888s, RIM-Lite, RPi Allstar node low audio.

[Doug Crompton]

Mike,

 Welcome to getting on Allstar. The 999 and rxboost on setting is the
highest you can go and much higher than you should need to. The brown wire
in the photo you r are referring to is the one that goes to the 888 Mic
input and that is the audio you here back on your radio listening to your
node. The green wire off of the volume pot is what is the node radio
receives when you talk to it from from your radio.

The first thing you should do is using the simpleusb-tune-menu (item 13
from the admin menu) select number 2 - rx audio. Then use your radio to
talk to your node. There is a bar graph and your audio should peak up to
5-6khz on the display. If it is high or low press return and change the
value and press return again and check to see how it has changed. When you
are happy with how it sounds hit return twice. Item 3 on the menu adjust TX
audio - what you hear. Adjust it for a comfortable - not distorted level on
your radio that matches what you hear from other repeaters etc with the
same volume setting on the radio.

If you want to arrange a time when we could meet up on Allstar you can let
me know what might be good for you and we can hook up. Send me a personal
message with your node and a good time.

The 888's and the USB FOBS vary so the resistor selection can also. Yu may
need to raise or lower the values to get what you want. Typically the 888's
run around 600-750 with rxboost on but your mileage may vary


*73 Doug*

*WA3DSP*

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


On Fri, Apr 6, 2018 at 8:32 PM, "Mike via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

> Thanks to hamvoip.org and others I built an Allstar node using the
> Baofeng 888s, a RIM-Lite interface and a Raspberry Pi.
>
> First of all it does work, I can connect to repeaters using DTMF commands,
> I hear audio from my system as well as the linked repeaters just fine.
>
> I haven't tried transmitting to a live repeater yet (don't want to make an
> offensive mess of the audio)  But I did link to a UK allstar node that is
> set up as an echo test or 'parrot'. Node#40894
>
> On that node when I make a test call, my returned audio is very low with a
> bit of hum.   I have set up the Allstar software on the pi to 999 volume
> and boost the RX...I needed that just to get the Pi to hear the DTMF tones.
>
> Where can I start trouble shooting for the low audio...and it is the RX
> audio (green wire if you use the hamvoip.org wiring.   I tried a 56k
> resistor (don't have a 68K)  tried a 10k resistor and tried no resistor on
> the RX audio.
>
> TX audio is just fine.  Radio audio is just fine when operating not
> connected to the RIM-Lite.
>
>
> Thanks,
>
> Mike
>
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