Sheldon:
FWIW, the 'dead man' timer relay I'm using now is one of these kits:
http://www.electronickits.com/kit/complete/elec/ck1614.htm
It can be set for any length you could possibly want.
(I first used an old Allen Bradley octal TD relay I had at work, but
that was kinda unwieldy).
This relay in turn toggles one of the inputs on my Webswitch Plus that
turns the power off to the radio's Astron PS.
But, in 1-1/2 years of constant power up remote operation with my 3000
I've never had a PTT lockup, or any other oddball rig or PC behavior.
But I wanted to put something together to make sure I never had a
problem so I threw all this relay overkill jazz at it.
Everything is on clean UPS and genset power, pretty safe from any power
bumps. That's important.
Good luck!
g
Sheldon Hartling wrote:
Thanks Bill, Tim and Gary
I'm going to try leaving the F5K on when I'm not around with the drive
set to 0% and a minimal configuration to see if I can isolate a
non-hardware cause. If I get another PTT-lockup I'll try sending a CAT
command (ZZRX or RX) from the setup test menu to see if that will
release the PTT.
Gary, your 'dead man' relay sounds like a great option for remote
operation. I've used DDutil for this in the past but it it still
susceptible to software induced issues. I'll have a look at
http://www.controlbyweb.com/webswitch/. Did you use WebSwitch(™) Plus
with BASIC scripts to implement your 'dead man'?
73, Sheldon VE1GPY
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