sorry, couldn't log back in...
Found a pretty good vox on the talking electronics website, has a QI of .25 mA so on a 750mah lipo it should last for 4 months.:D
Hi Adam, thanks for your reply, we did look at rf beacons but they don't transmit for long enoug, operate for days as opposed to weeks. A simple vox seems to fit the bill but can't find a circuit
with a low enough quiescent current drain.
Hello, this is my first post and I was hoping someone could help me with where to find a very long standby Voice Activated Switch circuit.
This project is a tracking responder for high altitude balloon recovery, A gps transmitter gives the approximate location, then a whistle activates a timed...