[RFI] Fan Noise on Repeater

Jim Brown jim at audiosystemsgroup.com
Tue May 9 08:37:08 EDT 2006

On Tue, 09 May 2006 05:31:29 -0700, rrath at charter.net wrote:

> Will answer more after work.

I think you missed one critical sentence in Stu's excellent post. 
I'll repeat it. 

"A few questions for you to help better understand the problem"

These are questions for YOU to think about -- they focus on the 
possible mechanisms whereby the noise could be getting into your 
system. It could be RF, coupling into the antenna or feedline, or it 
could be baseband noise coupling into the repeater through its audio 
and power supply circuitry. It could be the fan generating the 
noise, its power supply, or its controller. 


Jim Brown K9YC

More information about the RFI mailing list