[TenTec] Omni six-- heat related IF gain problem

[denton]

What I did to my Omni 6 is pull the speaker and install a small muffin fan 
in its place, as well as a second fan on the rf brick heat sink. A 50 ohm 
resistor in each fans B+ lead keeps the fan noise tolerable.
You may want to try this....
----- Original Message ----- 
From: "Chuck Guenther" <ni0c at earthlink.net>
To: <tentec at contesting.com>
Sent: Wednesday, July 13, 2005 6:44 AM
Subject: [TenTec] Omni six-- heat related IF gain problem


> For several weeks now, I've noticed a pronounced reduction in gain of my 
> Omni 6 after it has been on for a while.  When I first turn on the rig, I 
> get an s meter reading of s-2 to s-3 on antenna noise, which degrades to 
> s-0 after the rig has been on for a while.  The attenuation used to take a 
> few hours to kick in, but this morning I noticed fading out in a matter of 
> minutes.  Has anyone else experienced this?  I suspect a problem either on 
> the 9MHz board or the PBT board.  Any hints would be appreciated.
>
> Thanks & 73,
>
> Chuck  NI0C
>
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