[Milsurplus] [ARC5] Marine Aviation comms Luzon 1945

[Mike Morrow]

No.  There are no dual-frequency RU/GF sets.

There are indeed dual-band RU coil sets, but in every case except two, one band is a communications band and the other is a navigation band.  Examples:

CBY-47076     400 to   600 kHz for MF reception or homing
                      3000 to 4525 kHz for GF-* comm. transmitter
CBY-47107    540 to    830 kHz for ZB-* VHF homing adapter output
                      3000 to 4525 kHz for GF-* comm. transmitter

There is NO capability for swapping from one communication frequency to another by simply selecting the alternate band of a dual-band coil set.

There are NO dual-band GF-* transmitter coil sets, nor any RU/GF set with more than one transmitter or receiver.  (RU-4, -5, -6, -10, -11, -12, -18, -19 liaison receivers included one or two receivers, but never include a GF-* transmitter.  Those RU models were used with GO-* and GP-* liaison transmitters.)

The only way to cover two channels with an RU/GF set is to have two complete and separate RU/GF installations...which would have been extraordinary if ever it occurred.  That was a significate advance provided by the ARA/ATA, SCR-274-N, and AN/ARC-5 command sets.  Two transmitters in the transmitter rack provided two switch-selectable channels for transmit, and two of the three receivers in the receiver rack provided simulateous reception of those two channels.

Mike / KK5F

-----Original Message-----
From: MARK DORNEY <mkdorney at aol.com>
Sent: Sep 27, 2022 6:49 AM
To: Hubert Miller <Kargo_cult at msn.com>
Cc: ARC-5 List <arc5 at mailman.qth.net>, <Milsurplus at mailman.qth.net>
Subject: Re: [ARC5] Marine Aviation comms Luzon 1945

RU/GF set.   Dual frequency transmitter and receiver coils.  
Mark D. 
WW2RDO

 



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