[RFI] Broadcast station RFI Mixing

[Dale J.]

Jim, I've done that a few years ago with the mobile and if I remember it was all over within their pattern.  If for instance i go to the East side of town the signal drops way off.  

I just checked these two radio stations and both are huge in my P3, but clean, must be digital because the sides are perfectly vertical, I imagine if a good spectrum analyzer were used I'd see some stuff on the sides.  I also checked 80 meters and this morning at 3AM I don't hear a thing, both on the 3 rd harmonic and the mix.  The band is very quiet except for atmospherics.

73
Dale, k9vuj



On 20, Apr 2014, at 2:52, Jim Brown <jim at audiosystemsgroup.com> wrote:

> On 4/20/2014 12:14 AM, Dale J. wrote:
>> I have a similar situation here, two radio stations one about a mile and is 10KW with the pattern North covering the entire Twin City area, the other station is about 8 miles is a 50 KW station.
> 
> These mixes can be ANYWHERE -- in the transmitters of the stations themselves, or in rectification in any non-linear junction. I experienced them in a very dense part of Chicago and never chased them down.
> 
> To do that, you must drive/walk around and do a location on the source, listening on the frequency(ies) where you hear the mix.
> 
> 73. Jim K9YC
> 
> 
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