FUNKWERK KOEPENICK PRODUCTION OF SHIP'S RADIO EQUIPMENT

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00810A001100050001-3
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: December 14, 2016
• Document Release Date: March 7, 2002
• Sequence Number: 1
• Publication Date: May 5, 1953
• Content Type: REPORT

Approved For Release 2002/07/15 : CIA-RDP80-0081 OA001100050001-3
_CE.N.TRAL INTE,LL.I.G.EN'CE 'AGENCY
INFORMATION REPORT
This Document oontaine "Information affecting the Ne-
tionel Defense of the United states, within the mean-
ing of Title 18, sections 793 and 704, of the U.S. Code, as
amended. Itstrrnsmiesion or revelation of its conten$a
to or receipt by an Unauthorised pen n is prohibited
by law. The reproduction of this foam is prohibited.
SECRET/CONTROL U.S. OFF IC IA.IS ONLY
SECURITY INFORMATION?
COUNTRY East Germany
SUBJECT Funkwerk Koepeniok Production of
Ship's Radio Equipment
25X1A
DATE OF INFO.
25X1X
REPORT NO.
DATE DISTR.
5 May 1953
NO. OF PAGES 2
REQUIREMENT NO. RD
REFERENCES
THE SOURCE EVALUATIONS IN THIS REPORT ARE DEFINITIVE.
THE APPRAISAL OF CONTENT IS TENTATIVE.
(FOR KEY SEE REVERSE)
1. In the development division of the RFT Works at Berlin-Koepenick that is
concerned with the development of ship's radio equipment, a universal-wave
apparatus has been developed and put into production that has a range from
150 kilocycles to 2 megacycles over nine wave bands. A sea distress wave
band is provided. he output power provided is for normal head receivers;
the tube used for it is the American tube 6AC7 which Soviet ships also use.
However, the output power is too low for the Russians, although the operator
receives with headphones, because the Russians want music transmission in
message-free time. Accordingly, another end tube has to be installed,
probably the 6AG7 which is suitable for a two-watt loudspeaker.
2. This apparatus is a'?colbmercial types > dio.; n~tte alt .oxi`,:,'of'prescri.bed
sensitivity and wave range. This kind of apparatus is mostly delivered as
reparations goods; informant has never known of any on German ships.
According to workmen's statements, this apparatus was; distributed by the ITEB
Anlagenbau, Rostock, and installed on Soviet ships, but all the apparatus
delivered from these to the Soviet Union were rejected and returned on
account of technical and mechanical defects. They ware not made by the VEB
Anlagenbau. The commonest cause of failure in this apparatus is a reversible
turret coil which is subject to contact failure, be.calLee ,.of4del;eetiveaapri.rigs.
In addition, the frequency stability of both oscillators appears to be
excessive for unmodulated senders. Apparently, a 'modification by means of
temperature compensation was undertaken. Insensitive apparatus is used on
the drifters,
3. The development division of the Koepenick plant is also working on a nautical
distress sender.(Havarie-Sender) to be used in emergencies. It is graduated
from 400 to 530 kilocycles, but it also has fixed frequencies.that can be
tuned into the scale. The SOS call is sent with the key, and not auto-
matically. The apparatus has an antenna power of 60 to 80 watts, and is
accordingly more powerful than the fornierly manufactured 50 watt apparatus.
SECRET/CONTROL - U.S. OFFICIALS ONLY
ARMY x NAVY
XAIR
FIXI
FBI
AEC
ORR i TosI E
(Not.t Washington Distribution Indicated By "X"f Field Distribution By "#".)
Approved-.r-Release 200210745: CIA-RDP80-0.081OA001100050001-3
 Approved For Release 2002/07/15 : CIA-RDP80-00810A001100050001-3
SECRET/CONTROL - U. S. OFFICIALS ONLY
25X1A
4. A new development is a drifter station for medium, long, and short wave calls.
The apparatus is about 1.6 meters high, of equal width, and 50 cm. deep. It
is not intended for general use, because it is too expensive for the ordinary
radio traffic of fishing drifters. This apparatus has a great deal of clock-
work and is to a great extent automatic. It is very easy to operate, but
extremely complicated. A special training course of at least two weeks is
required to learn ita operation. Its power is unusually great for a drifter
and so is its radius of action.
5. The drifter station is not yet in production, because the development work is
not completed. It probably will be finished late in the summer of 1953. The
first apparatus can be completed in a year at the earliest..
6. The Koepenick plant has a shortage of high frequency litz wire. Only small
residual stocks with little choice,are available. The newly delivered litz
wire is not pro+erly'braided; the dissipation in the coils is too great, the
circuit diblectric loss rises and the radius of action is reduced. The newly
supplied high frequency litz wire is composed of 100 wires combined in a
single strand and twisted and 3 sWa ted like a normal litz wire.
7. There is also a shortage of steel, and of good cog wheels. Those available
are _laoorly 'cpnstructad and cis not mesh properly.
8. The quality of the tubes .has improved over a year ago, but still cannot be
described as satisfactory. The tubes are supplied by the HF Plant at Berlin-
Obersohoeneweide.
SECRET/CONTROL - U.S. OFFICIALS ONLY
Approved For Release 2002/07/15 : CIA-RDP80-00810A001100050001-3