now for a roger beep.
there is provision on the PCB, for a roger beep circuit and relay, but without removing the board it looked far too fiddly, and I wand it to be a reversible mod anyway.
there is a circuit for a bepp int the cybernet service manual so laid one out on veroboard.
with a couple of component tweaks Ive got it to sound how I want
https://youtu.be/
https://youtu.be/5yFKtPBtcqI
https://youtu.be/6E7PqIdBcxE