[R-390] R390A on 24/7

[chuck.rippel at cox.net]

Strongly suggest you NOT leave the RX on 24/7 and as Ceclin noted, never 
in "STANDBY."   The only "advantage" of 24/7 operation is to mitigate 
cold start drift.  On an R390A, that drift fairly minimal as compared to 
other tube equipment.

In "STANDBY," the plate B+ voltage is on but has no load.  As a result, 
it "creeps" up and can damage a radio.


Chuck Rippel



>>> Thought I'd throw an email out for a question. I'm new to the 
>>> Collins line,
>>> I do own several boat anchors, and wonder what is considered the 
>>> best way to
>>> run an R390? I have heard, leave it on 24/7, ovens off, don't let it 
>>> sit on
>>> one set of coils, frequency, when I'm not listening to it, shut it
>>> off........etc. What kinds of experience have any of you had that 
>>> works?
>>>
>>> Thanks in advance!
>>> Mike
>>> KD0KCM