[FoxHunt] Got a digital recorder, need a bit of a design

[wolfbob]

Check out Bob Simmon's Squawkbox: 
http://www.silcom.com/~pelican2/PicoDopp/MICROHUNT.htm
it does all you are trying to do plus it has the transmitter on board.

Also see the GeoTran at:
http://www.thunter.org/geothunt/howto/howto.htm using this Squawkbox for a 
solar powered hidden transmitter. (Uses the same duty cycle you propose)

Bob, WB6JPI


----- Original Message ----- 
From: "Ray Brown" <kb0stn at sbcglobal.net>
To: "Radio Direction Finding" <foxhunt at mailman.qth.net>
Sent: Tuesday, May 11, 2010 7:35 PM
Subject: [FoxHunt] Got a digital recorder, need a bit of a design


>  After some thought, I decided what I needed for a rabbit hunt was a 
> digital
> voice recorder rather than a simplex repeater. I picked up one off of 
> eBay,
> and now I'd like some input in designing something like a 555-based timer.
> Basically it would take my pre-recorded 20-second message and play it
> once every 3 minutes or so. So I'd need to activate the PTT on a 
> handitalkie,
> such as the old HTX-202. It should be pretty easy, I was just going to 
> check
> with y'all here to see if anyone's already designed and built one that I 
> could
> please copy the circuit design.
>
>  I see plenty of 555 kits out there as well, so maybe someone has a 
> favorite
> kit that'll emulate pushing a button once every 3 minutes.
>
>  Thanks!
>
>
>                Ray, KB0STN
>
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