Thanks...worth a try, just for fun.
FYI... found this, might come in handy for someone interested:
http://www.unn.ac.uk/~epje2/robotinf...eedAndDir.html
That page also mentions that there are PWM IC's, but the voltage requirements are too high for what I'm looking for.
Also, I guess the only way to truly test this would be with an o-scope, correct?
Also, this page mentions getting a 98% duty cycle out of a 556, and the circuit is totally different than the one I was looking at:
http://www.m.case.btinternet.co.uk/h...enerators.html
One other question...what is the maximum output current needed to actually push into the transmitter IC?