[Exotics] Kahn Receiver Information Still Needed

[exotics@mailman.qth.net]

I'm still looking for manual, schematics, any documentation on the
following:

KRL BIMODE
H. F. BIMODE RECEIVER
Model RBI-A1
Kahn Research Laboratories, Inc.
Freeport, N. Y. USA

These were made for the FAA and the last user was AIRINC.

RICH  WA6KNW