-=> On 12-15-97  08:16, Roy Witt said to Rob Dennis,<=-
-=>"About new posts......,"<=-
-=> 13 Dec 97 12:11, Rob Dennis wrote to Roy Witt:
 
Hi, Rob;
 
 RD>  I'm getting ready to do some major dumps of stuff the week before
 RD> X-mas. I'm also updating the "Find the Jammer" file I wrote 4 years
 RD> back.
 RW> Looking forward to both...
 
Likewise.  We have a "child" in the area that just LOVES to jam contacts
on both 2M and 440.  If he decides to jam a QSO, moving to another
frequency/repeater does no good... he will follow it from one frequency
to the next, whether it's a local machine or in the next county.  He even
went so far as to use his crossband repeat mode to lock up two linked
machines the other day.  Yesterday I happened to catch someone, (possibly
the same person?), trying to jam one of the out of town machines by
throwing a carrier on the output frequency.  It wasn't bothering the QSO
in progress one bit.  After several minutes of this, I keyed up on the
output frequency and said, "You aren't bothering them one bit, you're
just showing your own stupidity.  This is KB9QPM, and you don't have the
GONADS to say YOUR call!"  The jamming stopped INSTANTLY!!!  I would like
to give your "Find the Jammer" file to our head jammer-hunter.  Our jammer
takes particular pleasure in going after one Ham in particular, but anyone
is likely to become a target.  We've GOT to put a stop to this jerk ASAP!
 
 RD>  I've just started getting into playing with the APRS software for
 RD> DOS and reading up on how an APRS system can be used to do RDF-ing.
 RD> That was the major reason for the new Jammer finder post re-write.
 
There are 2-3 operational doppler DFs in the local area and a few "Handy
Finders," plus several other Hams capable of finding a fox anywhere in the
county within half an hour, (witness the last foxhunt when all 3 teams
found the fox within 25 minutes from about 10 miles away).
 
 RD> The idea of using APRS for DF-ing a jammer is something new for me,so
 RD> I have been doing lots of reading on it in the docs that came with
 RD> the software and some tesing with a couple of other amateurs here who
 RD> are trying to set-up a mini DF group using APRS.
 
Good idea.  We have at least a couple of Hams who use APRS, and a lot of
packet stations.
 
 RW> I did a write similar to this many years ago (1980-1) using a TI-994A
 RW> in Basic to triangulate signal reports using grid squares on a Thomas
 RW> Bros map book. It  always referred me to the right page, but was
 RW> usually a couple of squares off and never consistantly so...
 
If you can narrow it down to a page, then it shouldn't take much more
than moving the DFs into that area to get within a few hundred feet, and
you can use "walking DFs" from there to get to their front door.
 
 RW> Since San Diego is surrounded by mountains, it would have been a piece
 RW> of cake to implement direction finding equipment on three of those
 RW> mountains and link the sites to the computer base.
 
That sounds like a very good idea.  I know of one machine in the area
that already has a similar set-up.
 
 RD>  The post will be in three parts with the last part being on APRS
 RD> DF-ing using the DOS version of the APRS software. I should have it
 RD> finished sometime this weekend. (I hope!)
 
I shall wait for it like the cat who ate the cheese, then waited by the
mouse hole with baited breath.   ;-}
 
 RW> Are you going to UUEncode that software with it?
 
PLEASE DO!!!
 
73 DE KB9QPM ES SEASONS GREETINGS
   Ivy
 
 
 
... A repeater lets more people hear you make an a** of yourself.  :-}
 
       --
 
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           ³  SysOp: Ivy's WALL BBS - 6 Networks 920-457-9255  ³
           ³             IMHO: 5 WPM for EVERYONE.             ³
           ³           KB9QPM/AE as of 11/19/97 :->>           ³
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