[Milsurplus] More Vodka-Scented Ether (long)

[Meir WF2U]

I'll chime in here...

Hue, 

The transmitter (model RSB-F) is indeed the larger unit. It covers 1.5 to
9.5 MHz in 4 bands, output power is 15 W.
The dial style is indeed similar to some of the period German equipment
dials. The Germans and Russians were not unique in that dial design. There
is some British and other European equipment as well from the '30's using
the same type dial.
I saw a number of Hungarian military radios from the 30's and 40's during my
visit in their Signal Corps museum (as I found out, they had a developed
electronics industry at the time, rivaling that of Germany) with similar
dials. 
The dial style must have been a '30's European thing, it was a good
mechanical solution for low or no backlash reduction tuning, dials
etched/engraved in brass plates and the ability to lock the dial in place.
They work well; they're sturdy, stable and relatively simple.

There is a larger high power station as well utilizing the US-P receiver and
the RSB-F transmitter, called RAF. In this setup the RSB-F is used as the
VFO/driver for a high power output stage/screen modulator, with power output
of 500W on CW and 200W on AM.

Dave, 

Regarding caps in Russian equipment - I never had a bad cap (excluding
electrolytics) in any Russian equipment I own, and never had a cap failing
at the rated supply voltage. Their caps are constructed using a different
technology that is not prone to deteriorate and short out.
 However, I noticed that sometimes the metal film resistors (no carbon
composites in their equipment) they're using develop a bit of corrosion
either on the film itself or at the ends, where the end caps are fitted with
the leads, causing some noise. Also, the tube socket contacts are
intermittent sometimes (contact material quality) and ground rivets/srews
should be checked for good ground contact.
Feeding the US-P with 150-160 V should be safe, even if you don't want to
apply the full rated 200V.
My big Russian R-250M receiver with all standard metal octal tubes uses a
160 VDC plate supply.

My current project is to finish the cables for my Russian US-9/R-807 combo
(BC-348/ART-13 clone) to hook it up to the dynamotor and for the RX/TX
interconnection so I can put it on the air. I even have one of the original
key types used with the transmitter and the microphone.
I don't have the original Russian dynamotor, but the standard DY-17/ART-13
will work nicely, as even the ART-13 connectors fit the R-807 (well, the
power connector shell had to be sanded down just a hair to fit into the
Russian plug...).

73, Meir

-----Original Message-----
From: milsurplus-bounces at mailman.qth.net
[mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of Hue Miller
Sent: Saturday, July 21, 2007 1:52 AM
To: Milsurplus
Subject: ***Possible Spam*** Re: [Milsurplus] More Vodka-Scented Ether
(long)

Interesting, Dave. 
BTW the transmitter (i'm guessing that large unit is the transmitter,
in the transit case) has a uncanny resemblence to some WW2
German receivers, those of the FuHE*  types. ( = "Radio Monitor
Receiver" )
-Hue Miller
______________________________________________________________
Milsurplus mailing list
Home: http://mailman.qth.net/mailman/listinfo/milsurplus
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Milsurplus at mailman.qth.net

No virus found in this incoming message.
Checked by AVG Free Edition. 
Version: 7.5.476 / Virus Database: 269.10.10/908 - Release Date: 7/19/2007
6:10 PM
 

No virus found in this outgoing message.
Checked by AVG Free Edition. 
Version: 7.5.476 / Virus Database: 269.10.10/908 - Release Date: 7/19/2007
6:10 PM