[arm-allstar] Hang Time (?) Problem - K5FOY

[Doug Crompton]

John,

  It is possible that his hardware COS signal is not dropping for some
reason. This often happens with squelch problems and noise on the input. I
am assuming he is using simpleusb and hardware COS from the radio.

The first thing to do is check the COS line - pin 8 on the DMK-URI - and
see if it follows his input signal to the node. There could be a slight
delay measured in milliseconds on key up/down but it should not be long.

If that looks fine then we will go on with other things but if nothing else
changed I am guessing that is what it is. If it does turn out to be that
then you need to look at what the node RX is doing when he unkeys. Turn the
volume up on the node radio and listen. He should be using PL. Even if he
is using PL the squelch needs to be set properly.



*73 Doug*

*WA3DSP*

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

On Thu, Dec 8, 2016 at 12:32 PM, "John via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

> I'm attempting to assist a friend with a problem that started on his Pi
> node about a month ago. It acts as if the hang-time was increased to about
> 10 seconds. Because it is a simplex node, he has to wait for transmit to
> drop on every transmission. He had not made any software changes to his
> node when the problem occurred. He tried booting with his  backup SSD (from
> a time when everything was working properly) and still had the same
> problem. He has added toroids on wires and cables - no change. The delay is
> evident both on Allstar connections and Echolink. He is using a DMK URI
> attached to a 2 meter mobile.
>
> Any thoughts on how to continue to troubleshoot this problem would be
> greatly appreciated.
>
> Thanks!
>
> John
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