[Milsurplus] [ARC5] Soviet 1RSB-70 copy of the AN/ARC-8, Plus Other TU-4 Radio Sets

[Meir WF2U]

Ray,

Here are the photos of my US-8: http://ws19ops.com/Radios/US-8/
<http://ws19ops.com/Radios/US-8/%20>  . I didn't take photos of the power
supply, the junction box (it connects 2 control boxes to one receiver) and
the plugs.

Here is a photo of an older version of the US-8 - this has a different
control head, and the paint on the receiver is black wrinkle. Mine is grey
hammertone: http://www.rv3bc.narod.ru/Stat/rtx-us-8.htm   

A drawing of the control box - looks like from a manual:
http://ru.wikipedia.org/wiki/%D0%A4%D0%B0%D0%B9%D0%BB:US-8.JPG .

The bands covered: 230 - 500 kHz, 2.1 - 3.7 MHz, 3.7 - 6.4 MHz, 
6.4 - 11.3 MHz and 11.3 - 20.0 MHz. The IF frequency is 1035 kHz.

Here is an R-807/US-8 station on a TU-124:
http://igor113.livejournal.com/33081.html  . Scroll down through the cockpit
and instrument photos, you'll see it there. The R-807 has a completely
different mounting from the usual ART-13 and RSB-70 or R-807 MT-284 alike
mount. There is another view of the equipment further down, towards the
bottom of the page.

73, Meir WF2U
Landrum, SC




-----Original Message-----
From: Ray Fantini [mailto:RAFANTINI at salisbury.edu] 
Sent: Friday, November 30, 2012 9:34 AM
To: Meir WF2U; 'Mike Morrow'; milsurplus at mailman.qth.net
Subject: RE: [Milsurplus] [ARC5] Soviet 1RSB-70 copy of the AN/ARC-8, Plus
Other TU-4 Radio Sets

Got any pictures or other information on the US-8? Have seen, owned or
operated the US-9, R-311 and R-326 along with lots of other Warsaw pact
equipment but first time I have encountered this US-8 receiver. Would be
interested in seeing what the front of the radio looks like.
If anyone else is following this and they want to see what a RPS looks like
or some of my other stuff I put a picture of the RPS on a web page for
Russian radios that I have. Unfortunately do not have a lot of the images
that I have here at work and can only put that one up now, will go back
later and put up the internal pictures.  Go to:

http://staff.salisbury.edu/~rafantini/Russianradio.htm

RF


-----Original Message-----
From: Meir WF2U [mailto:wf2u at ws19ops.com] 
Sent: Thursday, November 29, 2012 12:29 PM
To: Ray Fantini; 'Mike Morrow'; milsurplus at mailman.qth.net
Subject: RE: [Milsurplus] [ARC5] Soviet 1RSB-70 copy of the AN/ARC-8, Plus
Other TU-4 Radio Sets

Ray,

There is no RSB designation by itself... The RSB-70 is the old designation
for the R-807. For example, there was also another airborne transmitter
system (2 transmitters, covering 1.5 to 12 MHz, looking somewhat like
command set transmitters on steroids), the RSB-5 which is a pre-WW2 design,
and was still used in certain aircraft up to the 60's, which became the
R-805 under the new nomenclature system. 
There was no 400 Hz power supply for the R-807. The dynamotor supply is
practically identical to the DY-13/ART-13 family, except for the 28 VDC
input connector, which is not the 3 prong circular threaded type on the US
models, but a two prong push-on type.
There is a remote-controlled variants of the US-9: the US-9DM. This receiver
is a modification of the US-9 by removing the dial mechanism, and replacing
the front panel with a different one. The tuning and band switching were
done by 400 Hz servos via the pilot's control head, where the function
switch and the other controls were located. This model had an external power
supply, as the servo circuits/motors took up the space where the dynamotor
used to be. It required 115 VAC @ 400 Hz and 28 VDC.
The later remote control receiver was the US-8 (yes, a lower number...),
still using the same shape factor and shock mount as the US-9, but with a
completely different circuit. This receiver has 13 tubes, all standard 7 pin
miniature types; all have US equivalents, like the 6BA6,6BE6, etc. It
requires 24-28 VDC, and 115 VAC @400 Hz for power. I have the complete
system: the 115 VAC/400 Hz input power supply, cable junction box, pilot's
control box (all operating controls, tuning dial, band switch), and plugs. I
just have to make up the cables. 

73, Meir WF2U

Landrum, SC