sorry, was not clear...
sorry, let me clarifiy. i dont know much about Rf circuits. as for buying a 27mhz RX, i have yet to find one that works. i am trying to send a signal to a RX that will simply give a HI voltage. ( say 5 volts POS). i am using AT tiny25's for encoding and decoding. i have a transmitter with a busted encoder chip, and can get a RX on the same frequency to give a voltage jump from 2v to 4 volts ( more or less), but the board is almost 1.75 inches square. i need a narrower board, and as long as it is less that 6 inchs, i am okay. AM is because that is what the transmitter is, and i need to avoid making my own transmitter (FCC). i am not using this for voice, just need to send a singal anp was going to use ASK for simple communication.
i was hoping to use a crystal to avoid using inductors coils, as i have no way of verifiying the milliHenerys. Buying them is out of the question, this is alos something of a challenge for me.
thanks
nemo