Fantastic.
Looks like a promising telemetry component on the receive end. While a nice side benefit of Morse is that it is human readable, it is still nice to have an inexpensive and flexible device that can 'read' Morse and optionally log data. Using the NPN in saturation mode worked pretty well with the 555 code oscillator and manual key, too. With the 567 front-end, pulling Morse out of the background noise should be quiet good. I'm looking forward to reading about some successes as this evolves. The Soviets and NASA and other countries used Morse Code telemetry for years as a back-up telemetry system for critical flight information - based on several Morse Code histories I have read.
Having an autoreader for Morse should open up telemetry use to non-Morse users. Great job srnet... quick also.
- Ray
Afterthought: I had previously said, "on the receive end", but there is really no reason that the circuit you propose could not be used on the model end.... the 08M2 may still have enough code space and EEPROM space to incorporate a few critical commands such as cutting down a payload from a balloon, etc. By creating a clever set of uplink command codes, the PICAXE could easily decode, select the proper subroutine, and encode again to Morse to provide a very flexible command module. Effectively, a poor-man's command multiplexer using only one channel.