Correctly termed Amateur Radio Direction Finding, it's the pursuit of a hidden transmitter by Club members
The Team Coordinator
A portable fox hunting Yagi antenna deployed from a vehicle window
Logistics and transport
The Fox transmits on the ARDF frequency (for 2metres that's 145.300Mhz) and we all rush about in different directions and try and find him.
The club held some 'show and tell' sessions on foxhunting and an
antenna workshop to revive this great amateur radio sport.
Now we can go hunting.
We began at a very basic level, using signal strength meters to
narrow down the fox's location and this worked 'ok' for a while.
To really zero in on a signal an Attenuator can be used, which
reduces the signal strength once you're near the fox. This helps
to narrow the direction of the frequency you're chasing.
We held a couple of meetings and looked at cheap antennas,
learned about simple attenuators and tried our hand at the
circuits and metalwork.
Then a
workshop to build a yagi
was needed to build a lightweight antenna suitable to throw in
the car and go hunting.
We've run a few Saturday Fox Hunts where someone hides in the
bush and transmits bursts of Morse Code for 1 minute, every 5
minutes.
Hunters head out and every 5 minutes, halt the car, listen for
the morse signal and spin the antenna around listening for the
loudest signal.
Jump back into the car and repeat the process heading in a
different direction. Finally we zero in on the general direction
and then bring the Attenuator into play to refine the search.
It's fun!
We also run some month-long static fox hunts where it is hidden in a building, but only transmits once an hour for a few minutes... people seek... notifying the Hunt Master with their 'best guess'. At the end of the time the 'finders' are announced.
If this is something that you think could be fun for your club or friends, you can get into it for a few dollars and have some enjoyment from this facet of the hobby.
If you notice any failures we'd appreciated an email to; webmaster@barc.asn.au
P.O. Box 129 Bundaberg QLD 4670
Or email; secretary@barc.asn.au
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