[AMRadio] R-390 heat and covers...

Rick rickb at tx.rr.com
Wed May 11 14:27:46 EDT 2011


Thanks Bob and Geoff. I will certainly follow this advice. I hope to hear
more later today about the fan setup. I have the TM but guess I overlooked
the part about the covers. I had already planned on using a small fan on the
Ranger even though it isn't rack mounted.
Rick/K5IAR


-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of rbethman
Sent: Wednesday, May 11, 2011 9:58 AM
To: Discussion of AM Radio in the Amateur Service
Subject: Re: [AMRadio] R-390 heat and covers...

This is especially true for the pair of regulator tubes at the bottom 
left rear of the R-390 chassis.

...I copied Roy on my last reply.  Hopefully he'll chime in later, he 
usually does fairly late in the day.


On 5/11/2011 11:44 AM, Geoff Edmonson wrote:
> On 05/11/2011 11:25 AM, Rick wrote:
>... That's always good advice for any device that generates heat.  Heat
> kills.  Fans are often found on Rangers, Viking II's and any other tube
> gear that generates heat...

> -Geoff/W5OMR



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