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Old August 16th 06, 08:54 PM posted to alt.ham-radio.vhf-uhf,alt.radio.scanner,aus.radio.amateur.misc,aus.radio.cb,aus.radio.scanner,rec.radio.amateur.antenna,rec.radio.amateur.homebrew,rec.radio.amateur.misc,rec.radio.cb,rec.radio.scanner
Steve Steve is offline
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First recorded activity by RadioBanter: Aug 2006
Posts: 5
Default Radio Direction Finder


"brizzy *******" wrote in message
u...
A cheap tracking device can be purchased through one of the following

pages.

http://tech-software.net/index.php?m...p=view_page &
PAGE_id=5&MMN_position=7:7
http://www.silcom.com/~pelican2/PicoDopp/PICODOPP.htm
I really don't think tracking devices have to be expensive but if you

don't
like paying for a good one, then I can provide a very simple 555ic timer
circuit you can use that will cost about $10 to make.
Here is the circuit of a very simple but workable tracking device that I
once used to track a signal to tandy's store in the toowong towers in
Brisbane. Once you learn how to use it, you can track to a square metre. A
hand held radio is the best choice of radio to use with the tracker. This
shop blocked ch 7 for 3 days until I had some free time to go and see

where
it was coming from. The same shop did it again some time later and the
culprit lost his job at that location thanks to a night time worker that

was
on the ball. The signal was a radio on the shelf connected to power with a
small antenna and a clip lead over the mic insert to hold it on tx.
http://www.k1ttt.net/technote/doppler.html
http://au.geocities.com/vk4jzz/side.jpg


I've bought one of the Ramsey kits which should arrive this week.
http://www.ramseyelectronics.com/cgi...ction&key=DDF1
I'll let you guys know how well it works when it's assembled.
Tracking to within a couple of houses is easy even without a radio that has
a signal meter but the doppler will make it all that much faster.
the serial ratbags and spastics in Sydney will get a fright when its up and
running. Unfortunately Sydney repeaters are going through one of those
phases where every sub-moron with a radio is having an obsessive compulsive
episode and we have about 20 whispering retards making the repeater
unusable. Hopefully within the next 4 weeks I can post an excel spreadsheet
with all their info. they usually **** off when they lose their anonymity.