[ARC5] Aircraft for Sale

[Scott Johnson]

The ARC-nomeclatured civilian sets seemed to be more prevalent in Army
aircraft, whereas the AF referenced them by their civilian models (618t-1,
2, 3, Wilcox 807A, MN-26, VHF-101 etc. Air force T.O.s even tend to use the
civil nomenclature.  ANG and USAFR units modded many aircraft with VHF sets
, primarily because they operated out of civil airports.  Most all
controlled airports have VHF/UHF frequency pairs, but it is very nice to be
able to monitor and communicate with the civil traffic.

Scott V. Johnson W7SVJ
5111 E. Sharon Dr.
Scottsdale, AZ 85254-3636
H (602) 953-5779
C (480) 550-2358
scottjohnson1 at cox.net
scott.johnson at ieee.org

-----Original Message-----
From: ARC5 [mailto:arc5-bounces at mailman.qth.net] On Behalf Of Mike Morrow
Sent: Monday, November 28, 2016 8:56 PM
To: arc5 at mailman.qth.net
Subject: Re: [ARC5] Aircraft for Sale

Scott wrote:

> The [T-28]D model that I have experience with had an ARC-54 FM, 
> ARC-51BX UHF, Wilcox 807A VHF, ARN-14 Omni, ARN-18 GS, ARN-6 ADF, 
> KY-28, APX-44, and AIC-10 interphone.

It sounds well-equipted to provide ground-support communications, especially
with the unpopular TSEC/KY-28 Nestor voice encryption capability for the
AN/ARC-54.  It seems to me that the T-28D should have been called the
AT-28D.

The USAF and US Army seemed committed to providing both UHF and VHF command
sets in their aircraft.  The USN essentially abandoned VHF not long after
WWII, when the AN/ARC-12 and then the AN/ARC-27 were available.  IMHO, in
the Vietnam era the AN/ARC-51BX was the most important of UHF aircraft
command sets.

The Wilcox 807A had JAN nomenclature as AN/ARC-134, but apparently no
components were actually marked with it.

Many late-1960s US Army UH-1D and H model helos in S.E.A. carried:

AN/ARC-131 VHF-FM, along with TSEC/KY-28 "Nestor"
AN/ARC-51BX UHF-AM
AN/ARC-134 VHF-AM
AN/ARC-102 MF/HF SSB (command ship only)
AN/ARN_82 VOR/LOC (usually no GS capability)
AN/ARN-83 LF/MF ADF
AN/APX-72 IFF
R-1043*/ARN Marker Beacon Receiver
C-1611*/AIC Interphone (4)

That's a pretty impressive array of avionics for a small aircraft.  It
covers a great percentage of the radio spectrum below microwaves.

FWIW, most US submarines carried AN/APX-44 or -72 IFF sets (with power fuses
normally removed until IFF was needed), 1960s to 1980s.

Mike / KK5F
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