[Kenwood] Fw: TS-850 Audible Whine

[Clif Holland]

FYI

I just checked the fan in a TS940 after I oiled it. At 12VDC it draws 200ma 
with the fan blades, without blades 100ma. Quiet too.

Clif Holland KA5IPF
www.avvid.com




----- Original Message ----- 
From: "GALE STEWARD" <k3nd at yahoo.com>
To: "Kenwood Reflector" <kenwood at mailman.qth.net>
Sent: Thursday, March 14, 2013 6:06 PM
Subject: [Kenwood] Fw: TS-850 Audible Whine


>
>
> FWIW, I modified both of my TS-850S radios to have the fans run 
> continuously. The thermsistor or something in the associated circuitry in 
> one radio failed and the fan did not run at all even when the radio got 
> warm. Not a good situation when contesting!
>
> I rewired the fan to run off of a 7808 three terminal regulator (8.0V). I 
> don't hardly hear the fan and the radio always stays cool. I liked the mod 
> so much that I also installed it in the radio that didn't have the 
> problem.
>
> 73, Stew K3ND
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