[Milsurplus] Aircraft LF use

[Hue Miller]

I don't recall if we discussed this point already, but it occurred ( or reoccurred ) to me that
the military branch most using, apparently, LF and MF in its aircraft radios was the US
Navy.

Consider, among standard equipment, WW2 era:

Army low power:
SCR-183/ 283  ( BC-230/ 430 ) no
SCR-274  ( "Command Sets" ) no
BC-307 no

Army high power:
SCR-287 ( BC-375 ) yes
ART-13  ( Army issued without LF/MF tuner plugin ) no

Navy low power:
RU/GF ( ~ equivalent SCR-183/ 283 )  yes- special manufacture or modified tuning unit for
transmitter
ARA ( earlier "Command Sets" )  no
ARC-5  ( late "Command Sets" ) yes
ARB/ ATB  no

Navy high power:
ARB/ ATD  yes
GP yes
GO yes
ATC / ART-13 yes

This may have already been self-evident, but it appears (1) the Navy had more LF capable equipment
earlier,
and (2) as WW2 proceeded the LF equipment proliferated into the lower power equipment.
Since the Navy Air game was the Pacific War, mainly, does this give any clue into the rationale for
LF/ MF
airborne transmitting equipment. I, of course, hold to my contention that it was mainly intended to
provide
aircraft with a potential to send a homing signal, which could be DF'd by other aircraft and ships,
using
standard LF/ MF DF equipment.
( Do i seem to remember that much / most of Atlantic aircraft ASW patrols, when done by land-based
aircraft, were actually USAAF planes? )    -Hue Miller