[ARC5] Rooski ART-13

Sun Jan 23 21:08:44 EST 2011

Not necessarily the story regarding cloning the ART-13/BC-348 when the
B-29's landed in the Soviet Union. They also had post-WW US aircraft, given
them by the Chinese who captured them from the Chinese Nationalists when
Mao's Red Army took over. There were US aircraft in Korea as well during the
Korean War, when the Communists invaded South Korea.

I also read hints from some sources that in fact the Soviets were given
permission to manufacture these radios in WW2, and they also received
several under Lend-Lease.

There are several modifications in the Russian US-9 receiver (BC-348 copy):
instead of the neon bulb voltage regulator, there is a real VR tube in
there; the  primary fuse on the 28 VDC feed in the receiver is on the
chassis, inside the receiver in the BC-348, and a fuse change necessitates
removing the receiver from its case. In the US-9 the fuse is on the front
panel (near the dial light dimmer) in a fuse holder - the fuse is replaced
without removing the receiver from the case.

The knobs are plastic in the US-9, and in the later production runs (there
are records that they were manufactured until at least 1977) the tuning knob
is a 2 speed concentric reduction drive. The dynamotor in the DM-9 has a
plug on the bottom to mate the socket on the chassis for electrical
connections. The BC-348 dynamotor has a terminal strip with screws. In later
production US-9 they also used "plug and play" solid-state inverter supplies
in place of the dynamotors, but they're interchangeable. The US-9 has one
US-style headset jack for the PL-55 type plug, but it also has the usual
Russian/European style dual banana-jack for the standard Russian military
headset plug. 

The R-807 transmitter (the Russian ART-13 copy) has some mechanical
differences, the top cover doesn't use Dzus fasteners but spring-loaded
hasp-style fasteners. The dynamotor for the R-807 looks different from the
DY-17 type dynamotors for the ART-13, but functionally it is identical. In
both the US-9 and the R-807 the connectors are identical to those of the
ART-13/BC-348. In fact, in the US-9/R-807 pair I own, I'm using the US
plugs, and the DY-17 for the R-807.

The US-9 was manufactured until at least 1977 (the latest manufacturing date
on the factory label on a US-9 I know of), and the latest manufacturing date
on an R-807 is 1978 I know of.

Construction is really high quality on these radios. For example my 1967
manufactured US-9 receiver components (caps and resistors) look modern for
the period, and the wiring is much neater (and Teflon or similar material
covered). According to a label inside the receiver, it was retubed in 1982,
and the tubes have all 1982 manufacturing dates on them.

There is another interesting fact about my R-807:    the transmitter front
panel and data book pages seem to indicate that the unit is a copy of a
USN-type T-47/ART-13 with the 8Q-2 CFI/MCW unit, but using a mounting system
based on the USAAF MT-283 and MT-284/ART-13 rather than the USN's early
MT-161/ART-13 mounting rail system.  But if the R-807/RSB-70 was based on
the transmitters on impounded B-29s, one would expect that the R-807/RSB-70
would model the USAAF T-47A/ART-13, with the vernier scale above the VFO
dial and a cal book with data at 1 kc intervals.

]

Food for thought.

And for entertainment, here is a link to a Russian IL-14 aircraft (DC-3
"clone")radio operator's position photo:
http://www.ruudleeuw.com/tmp-il14-tomasz01.jpg  and
http://www.ruudleeuw.com/tmp-il14-tomasz02.jpg .

73, Meir WF2U

Landrum, SC

  _____  

From: arc5-bounces at mailman.qth.net [mailto:arc5-bounces at mailman.qth.net] On
Behalf Of Robert Eleazer
Sent: Sunday, January 23, 2011 7:22 PM
To: arc5 at mailman.qth.net
Subject: [ARC5] Rooski ART-13

Reference Item 130472921750

So, turns out the Soviets copied not just the BC-348 but the ART-13 as well.
And of course the entire DC-3 and B-29.

Doubt this item will make y'all grab for your checkbook, but there are some
nice pictures of this "Alternate Universe" ART-13 transmitter.  Interesting
to note that they appear to have the LF oscillator installed as well.  Does
that mean that the ones they captured in WWII had that feature installed?

Wayne    
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