[R-390] R390

[chacuff]

Yea...the non "non-A" doesn't need the fan....

Cecil
----- Original Message ----- 
From: <nryan at mchsi.com>
To: "Mike Jones" <dustoff4 at sbcglobal.net>
Cc: <r-390 at mailman.qth.net>
Sent: Thursday, April 26, 2012 7:02 PM
Subject: Re: [R-390] R390


> Hi, Mike,
>
> 1. Turn off the ovens and reduce the 3 amp fuse to 2 amps.  Reason being 
> that PTO's thermostat can stick and totally cook the innards.  Reduced 
> size fuse will enhance protection in case of, say, a filter capacitor 
> failure.
>
> 2. Consider soft-starting the receiver with a Variac and setting it no 
> higher than 115 volts but no lower than 110 volts.
>
> 3. If a Variac is not an option, wire up a buck-boost arrangement by means 
> of a 12 volt filament transformer so as to lower line voltage input.  See 
> the "Pearls of Wisdom" in the R-390A Y2K online manual.
>
> 4. If it's a "non-A" in a rack with room for hanging an AC powered muffin 
> fan off the receiver's left side, set its voltage by way of an AC 
> capacitor wired in series to lower its speed and run silently.  Orient fan 
> to draw heat AWAY from power supply module.  You won't need much air 
> movement.
>
> 5. No need to run 24/7 unless you are sitting in front of the rig all that 
> time.
>
> 6. Not heard anything about leaving receiver sitting on the same coils. 
> Keep it tuned to any frequency you like for as long as you like.
>
> Enjoy.
>
> Norman, KG4SWM
>
> Any activity becomes creative when the doer cares about doing it right, or 
> doing it better. -- John Updike
>
> ----- Original Message -----
> From: Mike Jones <dustoff4 at sbcglobal.net>
> To: r-390 at mailman.qth.net
> Sent: Thu, 26 Apr 2012 17:09:42 -0500 (CDT)
> 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
> ______________________________________________________________
> R-390 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/r-390
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:R-390 at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html