On Mon, 16 Jul 2007 16:17:09 -0400, Tom W8JI wrote:
>Everyone better be careful here.
Tom is right, of course.
BUT: let's not lose track of the original problem, which is SHORT
(a few seconds) interruptions of mains power that cause the Alpha's
filament timer to reset. Paul's major concern is not the 2 seconds
loss of transmitting time, but rather the loss of 3 minutes (and his
run frequency) while the timer resets.
A reasonably robust "standby" UPS certainly SHOULD be able to hold
up the filament and low voltage supplies for a few seconds (or even
a few minutes) IF the amp is not transmitting, thus preventing the
reset.
A simple interlock that locked out KEYING the amp when the UPS is
running (or even a smart operator) should prevent the very real
problems that Tom has outlined.
73,
Jim Brown K9YC
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