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Re: [TenTec] Bliss: Omni 546C working FB again

To: tentec@contesting.com
Subject: Re: [TenTec] Bliss: Omni 546C working FB again
From: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Reply-to: geraldj@storm.weather.net, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Wed, 09 Jul 2008 11:03:24 -0600
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
On Tue, 2008-07-08 at 18:51 -1000, Ken Brown wrote:
> > I had intended to replace the heatsink with one that has the fins vertical 
> > oriented (and 
> > hence increasing the cooling capacity) and had it already drilled and ready 
> > to go in. 
> >
> >   
> I have always wondered why Ten-Tec has the heat sink fins horizontal on 
> the Omni VI and Paragons. I wonder , have they done this on all of  
> their transceivers?  The 961 and 962 power supplies have the fins 
> vertically oriented which, as far as I know, is the right way.

If the heatsink temperature stays within reason, the horizontal fins are
adequate. They will cool immensely better if a muffin fan is hung our
mounted to blow air at them. Then gravity is far less of a factor. Slow
speed muffin fans can be very quiet. But the fan will gather lint,
whether fast or slow.
73, Jerry, K0CQ

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