It may depend on the physical layout of the heat sources.
If they are concentrated in a few small areas, then a long, horizontal fin
may more effectively spread the heat into a lot more fin area.
If that is not the case, vertical would have been better.
But I'd bet you they do it for the reason I mention.
73 de Gary, AA2IZ
----- Original Message -----
From: "Ken Brown" <email@example.com>
To: "Discussion of Ten-Tec Equipment" <firstname.lastname@example.org>
Sent: Wednesday, July 09, 2008 12:51 AM
Subject: Re: [TenTec] Bliss: Omni 546C working FB again
> > 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.
> DE N6KB
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