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Re: Pin point the UO-14 jammer.

Concerning the Jammer on UO14 etc, I think satelllite interested
individuals should conisder a neat club project to build BAND MONITORS and
placing them at HIGH locations  and LISTENING to what is going on between
145.800 and 145.999 in their area.

I envision a cheap scanner (with GOOD bandpass filter in front of it)
scanning that 200 KHz and then whenever the squelch opens, it sends the
audio down on a UHF link so people can monitor it.  An APRS telemetry
packet could also indenfity the FREQ of the scanner... and if a DF unit
was up there, then the AUTO-DF interfaces of APRS could show to everyone
the bearing.

In any case, I believe we must all be vigilant to what goes on between
145.800 and 145.999.  I have heard FM QSO's from locals there in the


On Fri, 27 Jul 2001, Vince Fiscus, KB7ADL wrote:

> We can pin point the jammer on uo-14 using instant track.  What the idiot 
> doesn't doesn't realize is that the longer he transmits during a pass the 
> more we can locate him.  If he transmits horizon to horizon, his location 
> should fall on a thin line. Monitoring a number of passes can make the line 
> or football shape smaller.
> What we need to do is have stations in the south take a snapshot of their 
> IT screen when they're fairly sure they first hear the jammer, then we need 
> stations up north in western Canada and Alaska take a snapshot of their IT 
> screens when the jamming ends and weakens.
> The jammer will be located within the intersection of the footprints.  We 
> can then alert amateurs in that location to have a listen.  I have a 
> feeling that just publishing the identity of the individual to radio clubs 
> in his area and on this list will end the jamming. No need to bother Riley H.
>    Our radio club up here in Yellowstone county has a lot of county & city 
> transmitter hunts.  I know we could find him if he were in this area.  I 
> use a doppler direction finding unit which is nice for triangulating short 
> duration signals.
> ----
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de WB4APR@amsat.org, Bob

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