Hi from Adam Kb2jpd You can do a real simple repeater controller using some 555/556 timing chips in monostable mode.Look at any Forest Mimms 555 cookbooks. He did quite a few decent circuits.
As for the ID timer requirement, You can get any 1200 packet TNC that has morse code ID that you can program with a laptop. Some good TNCs even have a hardware/software Carrier operated Switch included. Maybe you can tell us what you want, unless you want a real challenge like a tube repeater controler ? Adam
