Most of the commercial tracking collars don't operate in
the ham bands. Many are in the 214 - 220 MHz range, which
you handheld might receive, but an FM receiver may or
may not do well at receiving the pulsed signals that
are needed to prolong battery life.
Communications Specialists may be able to help:http://www.com-spec.com/
Or LL Electronics:http://www.radiotracking.com/
Otherwise there are some inexpensive 433 MHz transmitter
chips that could be used if you wanted to build your own.