[R-390] R390

[chacuff]

Only thing I can think of is that in some of the tropical climates during 
it's military service, there might have been a concern of the slugs sticking 
to the coil forms if things didn't get moved around from time to time.

Just a thought...

Cecil
----- Original Message ----- 
From: "Ba.Williams" <ba.williams at charter.net>
Cc: "Mike Jones" <dustoff4 at sbcglobal.net>; <r-390 at mailman.qth.net>
Sent: Thursday, April 26, 2012 8:23 PM
Subject: Re: [R-390] R390


>
> The operators manual mentions a recommended time limit for using the 
> standby function.
>
> I've heard something about coils years and years ago. Don't remember why 
> it was said to not so that.
>
> A former member, Nolan Lee, left his on 24/7 and kept testing tubes along 
> the way.
>
>
> The other other Barry
>
>
> On Apr 26, 2012, at 7:05 PM, "chacuff" <chacuff at cableone.net> wrote:
>
>> I've heard of all of those except the one about letting it sit on one set 
>> of
>> coils.  Still trying to figure that one out and how it might be a bad 
>> thing.
>>
>> You will find that everyone does it differently...some leave them on 24/7
>> (which they were designed to cope with) and some turn them on and off.
>>
>> Probably the only thing I can think of that is a no no is do not leave 
>> the
>> radio on and in the "STANDBY" position.  Our line voltage is high enough
>> these days to add a bit of stress but unloading the power supply pushes 
>> some
>> of the components beyond their voltage limits.  I think the best thing 
>> you
>> can do with the radio is use it often.
>>
>> There is a case for thermal cycling being harmful to electronic gear and
>> just leaving it on 24/7 might be better for it...but really it's personal
>> preference.
>>
>> Cecil
>> K5DL
>> ----- Original Message ----- 
>> From: "Mike Jones" <dustoff4 at sbcglobal.net>
>> To: <r-390 at mailman.qth.net>
>> Sent: Thursday, April 26, 2012 5:09 PM
>> Subject: [R-390] R390
>>
>>
>> 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
>>
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