Ham eqpt for wildlife radiotelemetry? - FoxHunting Forum at eHam.net

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Ham eqpt for wildlife radiotelemetry?	Reply
by KE7WAK on October 16, 2008	Mail this to a friend!
I'm new to amateur radio, and just got my first handheld transceiver (Yaesu FT-60). I'm also a biology grad student, and am occasionally involved in wildlife radiotelemetry studies. I'm wondering if the transmitters and receivers used by biologists are somehow different than the equipment used by hams. I tested my Yaesu radio today to see if it could pick up signals from a radiocollar used for tracking pygmy rabbits, and the best I got was a little bit of static every two seconds when I was supposed to get a nice "beep". The telemetry receiver used for the same project got a nice clear signal (we were indoors, and the small transmitter was only inches away). So, I was getting something on my Yaesu, but not a usable signal for finding a critter out in the field. Are the signals used for wildlife tracking digital, and not receivable on a simple handheld transceiver? Thanks for helping me understand how all this works. --Jesse W, KE7WAK

RE: Ham eqpt for wildlife radiotelemetry?	Reply
by K0OV on October 16, 2008	Mail this to a friend!
Your Yaesu receiver works only in the AM and FM modes. Therefore it cannot produce the "chirp" sound usually associated with wildlife transmitters. Researchers use receivers with CW/SSB detectors. There are some amateur receivers that also have these modes. There is a lot more information about using amateur equipment for wildlife tracking on this page of my Web site: http://www.homingin.com/joemoell/owlfaq.html And this page describes the characteristics of wildlife transmitters: http://www.homingin.com/joemoell/squegg.html I hope this is helpful. Joe Moell K0OV

RE: Ham eqpt for wildlife radiotelemetry?	Reply
by KE7WAK on October 19, 2008	Mail this to a friend!
That was really helpful. Thanks for your reply, and for taking the time to put those web pages together.

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