Hello Denny,

My last project 8 years ago was a DDY for the deaf. I used a Philips 752 EPROM with 2K ...Powered a LCD, keyboard, and did all the BUADO code. What I did, was use a Voltage regulator to make a A/C wave pusating DC. And made a counter to count the time the DC was on. That time would be either a set amount of time, or 3 times (for a dash). After the end of the character I subbed to a table, got the charactor, and printed it out on the LCD. To transmit was easier....just go to the same table and you only toggled a pin up and down for X amount of time.

Dwayne