[BC] Harmonics...

WFIFeng@aol.com WFIFeng
Tue Jan 3 12:34:30 CST 2006


In a message dated 01/03/2006 01:31:52 PM Eastern Standard Time, 
biwa at earthlink.net writes:

> I recently had a problem where the third harmonic was about 13 dB too 
>  high.  This was definitely coming out of the antenna yet the 
>  transmitter into a dummy showed the harmonics almost 
>  non-existent.  The problem turned out to be a corroded connection in 
>  an ATU of a D.A.

I had something similar happen with an AM station whose 2'nd harmonic landed 
on another station's frequency. Turns out an *occupied* mouse nest inside an 
ATU's coil was the culprit. Eliminating the nest (the mouse got away, 
unfortunately) eliminated the harmonic.

Willie...


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