Topband: Broadcast Radio??

Jim Brown jim at
Mon Sep 25 12:20:03 EDT 2006

On Sun, 24 Sep 2006 21:28:00 -0500, AD5VJ  Bob wrote:

>1820.205 LSB.

It's quite common to hear intermod from broadcast stations on 
multiples of 10 kHz. This CAN occur within the transmitter of one of 
the stations, but also within some non-linear detector near you (or 
not so near you) that then re-radiates it on attached conductors. In 
Chicago, I was regularly bothered by spurs like this that came and 
went at random times not related to station sign-on and sign-off or 
power/pattern changes. 

Here in Santa Cruz, I hear a very weak product on 1810. In Chicago, 
they were often strong enough to copy the audio. There are also 
occasional problems with intermod from poorly operated shortwave 

Jim Brown K9YC

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