[ARC5] arc-5 BCB RX seen

[WA5CAB at cs.com]

The below two messages were sent on 03 November and the bounce notice 
received on 06 November.  I wasn't able to figure out why they were bounced, but the 
list of servers they went through ran to three pages.

Anyway, I now understand why some comments made after I sent this continued 
to make erroneous statements or assumptions.
*******************
I expect that the LM was more likely used for checking or re-setting the 
Liaison Set but the fact remains, easily proved by checking in any LM manual 
from 
about the LM-10 on, that the LM was supplied three ways, with AC rectifier 
supply, with dry battery supply, and with no supply. Although it's possible 
that 
the dry battery operated LM's could have been carried in aircraft, if that 
was the intent, why build LM models capable of operating from an external 
supply 
of 12/14 and 200/260, 24/28 and 200/260 or finally 12/14-24/28 and 
180/260-260/475?  Plus the obvious fact that the LM's DC power cord plugs 
directly into 
the accessory connector on the ARA, ARB and GF/RU juction box.
********************

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 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, -7, -9, -10, -12, 
-14, -16 
and -19. And the dry battery operated models are -1, -3, -13 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, -12, -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 
(and the -21 is a minor mod of three earlier models) had AC supplies.
********************

Robert Downs - Houston
<http://www.wa5cab.com> (Web Store)
MVPA 9480
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