[GreenKeys] Polar Relays

[Tom Hunter]

Steve Bennett,

Download this from navy-radio.com, You will learn more than you ever wanted to know about Teletype circuits.

I have it on paper and have been working my way through it. Most of it is familiar to me. But there is always something new to learn. For example, I have used full duplex on audio pairs, but did not know it could be done with TTY loops.

http://www.navy-radio.com/manuals/tty/Principles_of_Telegraphy.pdf


Tom   N3CRK