Clough-Brengle

Model I-72-L

US Army Signal Corp

signal generator

1948

Radio Heaven collection

I have no idea what this hole on the front panel marked "PILOT"

is for. It has a closed bottom and sides. It's like a small can mounted to the back of the panel.

Anybody have any ideas?

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Orange Signal Corp ink stamps

on the back of the cabinet and on the chassis.

Schematic glued inside back

of cabinet.