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BBSRT on Sun Jun 30 11:40:04 2019
of our target. Up-conversion will help to eliminate local strong RF
sources from impinging on our delicate target. We might also have a good
preamp on hand, just in case that extra bit of distance is required. As
you can see, readily available equipment can be adapted to most
surveillance applications without difficulty. Only a little imagination
and knowledge regarding what you're working with is required. For portable
use, we'd choose either a Bearcat XLT (best audio), or a Radio Shack PRO
handheld as the PROS have an additional bit of coverage most handhelds do
not; their coverage in the band runs from 380-512 Mhz rather than the
conventional 406-512 coverage in most handhelds. There are a lot of
transmitters parked in the area just below 400 Mhz, it's such a quiet
place to put a bug!
TRACKING SYSTEMS for keeping tabs on a moving (vehicular) subject have
been much the rage in TV and the movies, but the fact is that they are
EXTREMELY unreliable in certain situations and are nearly unaffordable in
almost all situations. A scanner can be most useful in this role if used
with the right tracking transmitter. The most desirable would be a pulsed
tone transmitter of about 100 or more milliwatts. Since we're dealing with
a target that we will (hopefully) track without being seen, we only need
to establish the general area of the target, and use a little surveillance
savvy. A signal or S-Meter can come in very handy here to serve as an
additional guide. With a little practice, a scanner receiver / tracking
transmitter combination can be a very usable surveillance tool. A dry run
on a practice vehicle is most definitely called for here, as to give the
operator an idea of just how close he is when that signal strength clears
up....Often it is possible to lock onto the carrier before you ever hear a
tone, and as you get closer beep....beep.....beep.....gotcha.
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