[arm-allstar] Rx Delays

[Doug Crompton]

Chris,

rxaudiodelay is primarily used for squelch tail elimination. It delays the
audio in a buffer so that a drop of COS can cutoff a portion of the audio
before the COS drops thus eliminating the tail of the transmission where a
squelch crash would take place. Since all radios are different this value
is adjustable. Valid values are from 0-24 in 20ms increments. Typical
values in most cases would range from 5-10 or 100-200 ms. If is obviously
not mandatory to use this, some people actually like squelch tails. The
default is 0. If you have a way to monitor your node through another node
or maybe iaxrpt you can listen when you drop TX on the node you want to
adjust and move this value up until the tail is gone. Unless the tail is
unusually long you should be able to eliminate it.

rxondelay delays the valid COS signal and is used to stop cyclic keying or
ping-pong which can happen in rare cases. If you bring up
simpleusb-tune-menu and select the "V" view mode you can see both the COS
input and COS composite displays. To understand how rxondelay works set it
to some high value like 20 or 400ms. When you transmit to your node you
will see the COS input immediately go keyed and the 400ms delay of the
composite. Setting this value too high would cutoff the beginning of a
transmission as it delays the actual COS beyond the real COS signal. The
default is 0 and this would be appropriate in most all cases.


*73 Doug*

*WA3DSP*

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



On Fri, Dec 8, 2017 at 7:20 PM, "Chris Souleles via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

> What is the difference between Rx On Delay and Rx Audio Delay in
> SimpleUSB.  What do they do and how do I set them properly?
> Thanks,  Chris - W6CS - 73
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