[arm-allstar] heartbeat led

Tom Whiteside tomw at ecpi.com
Fri Jan 19 11:57:27 EST 2018

I sure want to thank you guys for this change!   We did some testing on the
nodes here trying to key and talk as fast as we could and experienced zero
clips!   We had had so many problems in nets with clipped audio (despite
coaching to key and wait) that I ended up increasing the hang time to 5
seconds just to mask the effect in nets.  

This software is so cool and it just keeps getting  better with you guys'

73 Tom N5TW

-----Original Message-----
From: arm-allstar [mailto:arm-allstar-bounces at hamvoip.org] On Behalf Of
"David McGough via arm-allstar"
Sent: Wednesday, January 17, 2018 8:27 AM
To: "Alan Matthews via arm-allstar" <arm-allstar at hamvoip.org>
Cc: David McGough <kb4fxc at inttek.net>; Alan Matthews
<alanm0aqc at btinternet.com>
Subject: Re: [arm-allstar] heartbeat led

Hi Alan,

This is normal behavior with the simpleusb driver as of the firmware release
at the end of October, 2017 (as of: 
1.4.23-pre.hamvoip-V1.5.3-20-app_rpt-0.327-10/29/2017 )...

The always faster heartbeat indicates that the audio fob is always in
full-duplex audio mode. I found that this change improved performance,
mainly reducing audio latency and reducing or stopping the occurrence of
"chopped off" first syllables when the TX is first enabled. I haven't
noticed any negative side effects (????), so far. I run all my systems in
full-duplex, at this point.

If for some reason you need the original half-duplex-when-idle behavior, you
can revert to the old mode by setting duplex=0 for the node stanza in the
simpleusb.conf file.

73, David KB4FXC

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