[TenTec] Bliss: Omni 546C working FB again

[Dr. Gerald N. Johnson]

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.
> 
> DE N6KB
> 
73, Jerry, K0CQ