[GreenKeys] Another non-standard RTTY terminal

[William Wuttke]

I have a homebrew hardware/software setup using an ESP32-based
 "Modem-Teletype Interface Unit (MTIU)" and a modified MFJ RS-232 switchbox
to serve as a digital connection between virtually any type of terminal,
Baudot or ASCII, and any of my terminal units (HAL ST-8000, HAL ST-8000A,
Dovetron MPC-1000, Flesher TU-300, Heathkit HD-3030) . I have a Model 28
teletype connected via a loop to RS-232 converter. AFSK from the selected
terminal unit goes through a manual stereo switchbox to a USB soundcard
which is connected to a mac mini. In the mac mini the audio is routed
through Rogue Amoeba Loopback to SmartSDR which is controlling the Flex
6400M radio. Also running on the mini is a homebrew RTTY terminal program
connecting the Silent 703 (or any other terminal device) to the MTIU. The
terminal unit used in the video is the Flesher TU-300. It's kind of a
convoluted setup developed over the years of experimentation with this
forgotten mode of communication. Actually, RTTY is probably the only
digital mode that you can still experiment with. There are still a few of
us who communicate over HF with "heavy metal".
Having Fun with RTTY.
Bill
KE3BK
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