As I alluded to Ben when he handed me this radio, I've built a fox transmit controller out of an old Byonics TinyTrak-3 (TT3).
It is hard coded to tx for 30 sec and quiet for 90. The tones are synthesized by a PIC micro and the repurposed hardware has everything needed to interface to the fox transmitter.
Current is less than 10 milliamps, so a 9v battery goes long term.
I was abit rusty writing code again after a couple years away. Use it or lose it I guess. I originally wrote the program it was based on back in 2004, according to the file.
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Happy Hunting & 73
Mike N0QBH
N0QBH Mike Berg