Some of the gear used here to get the various modes, running efficiently are as follows.

The JBL Urei Equalizer.
Another audio mixer, for my systems is
the Panasonic
WR-450 with separate inputs for various microphones
so I can maintain a common type of audio.

The Ampex 601 Reel to Reel tape recorder (BA-tubes).


The Harris RF-901A Phone-Patch. (Remember Phone patches?).
The auxiliary RTTY
tuning indicator and
power supply (170 Hz Shift).