[ARC5] arc-5 BCB RX seen
WA5CAB at cs.com
WA5CAB at cs.com
Sat Nov 3 22:24:56 EST 2007
Further to my previous, the LM-10 manual (one of the several models supplied
by contract with no external power source) states in part:
...For standard installation in Naval aircraft, the required operating power
is drawn from the junction box of any aircraft radio equipment of the Model GF
or RU Series...
Unfortunately, the LM-10 is the highest numbered (i.e., latest) external DC
powered model that I have the manual on so I don't know what that paragraph
might have read in the 1944 LM-19 manual. But presumably as the ATA/ARA replaced
the GF/RU, it would say ARA.
FWIW, the external DC operated models are -2, -4, -4a, -5, -9, -10, -14, -16
and -19. And the dry battery operated models are -1, -3 and -17. Which in
answer to John's earlier implied question is why far more of the oscillator/freq
meters are around than of the AC power supplies. Further, the -9, -16 and
-19 were in waterproof carrying cases which I suspect (but don't have the
manuals to prove) might imply vehicular use. Unfortunately the FMF Pacific document
I have that lists radio equipment used in vehicles such as the M3/5/5A Stuart
and M2 75mm GMC doesn't list auxiliary equipment. Only the radio sets
(either GF/RU or TCS). But only six of the 22 models, -6, -8, -11, -15, -18 and -21
(a mod of three earlier models) had AC supplies.
In a message dated 11/3/2007 5:20:40 PM Central Standard Time,
AAF-Radio-1 at aafradio.org writes:
> >>The power connector would more likely go to a ZB homing receiver since
> >>it was used with the 46145 receiver (along with others.) Actually, I
> >>can't recall an installation where it was used to power an LM, though
> >>it certainly could ... and I'm sure (and hope) someone can point one
> >>out to me.
> >>
> >
> >I suspect that the old tale about those power adapters being used for the
> LM frequency meter is mostly just supposition.
> >
Robert & Susan Downs - Houston
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MVPA 9480
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