TELEPHONE, TELEGRAPH, TELETYPE, AND CARRIER INFORMATION

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00047R000300210002-2
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 2
• Document Creation Date: December 23, 2016
• Document Release Date: April 12, 2013
• Sequence Number: 2
• Publication Date: August 5, 1953
• Content Type: REPORT

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Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2014/11/04: CIA-RDP82-00047R000300210002-2
CLASSIFICATION SECRET/Security Information ru(/vt,i5mr.
',CE N T RA L INTELLIGENCE AGENCY
INFORMATION REPORT
COUNTRY Czechoslovakia
SUBJECT Telephone, Telegraph, Teletype, and
carrier Information
PLACE
ACQUIRED
DATE
ACQUIRED
DATE OF INF'
THIS DOCUMENT CONTAINS INFONMATION AFFECTING THE NATIONAL DEFENSE
OF THE UNITED STATES, WITHIN THE MEANING DI TITLE IS, SECTIONS 793
AND 794, OF THE U.S. CODE, AS AMENDED. ITS TRANSMISSION OR REPS.
LOTION OF ITS CONTENTS TO OR RECEIPT SE AN UNAUTHORIZED PERSON IS
PROHIBITED SY LAW. THE REPRODUCTION OF THIS FORM IS PROHIBITEO.
DATE DISTR 50X1953
NO. OF PAGES 2
NO. OF ENCLS.
(LISTED BELOW)
SUPPLEMENT TO
REPORT NO.
THIS IS UNEVALUATED INFORMATION
Telephone
_ ,
1. Telephonecentral offices are usually located in post office buildings
- of Czechoslovakian cities0 this is true in Bratislava, Prespv�
Zilina� Trecin, and Proprad.,
50X1
2.
some details of central office equipment in the following
Bratislava
Equipment was an IT&T machine system, installed and partially manufactured
in Prague by the Czech subsidiary of Telegraphi, of Belgium. The original
3,000 lines were ordered increased to,100000 (7% connections) in 1,942,
but installation was not completed until early 1945. ,
Presov
50X1
50X1
The inatallation was a Siemens Decade System� built by Siemens in Berlin9
and was only partially delivered in mid-1944. Part of the new installation
Vas evacuated when. the Soviet armies approached the City in 1945. The
system contained 1,000 lines originally. The new installation had a_pro-
jeCted 6,000 lines. The incoming power, 220/380 V, three-phase- 50 cycles
charged two 60 V DC batteries (one always held in reserve) through a motor
generator or a mercury rectifier.
Telegraph
The Siemens Companydid not sell telegraph equipment in Slovakia. All
telegraph equipment was manufactured by Telegraphie Praha, or Eticcson.
Like the telephone central office, telegraph transmitting facilities
are usually located in the pot office building. The larger cities
gratislava� Zilinal and Presoil also had telegraph offices in the rail-
road stations. Telegraph and telephone lines circuits were ordinarily
CLASSIFICATION SECRET/SECURITY INFORMATION
DISTRIBUTION
ORR EV
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2014/11/04: CIA-RDP82-00047R000300210002-2
Declassified in Part - Sanitized Copy Approved for Release @.50.-yr,2014/11/04 : CIA-RDP82-00047R000300210002-2
sEcHit*CMITY INFORMATION
2
carried op separate poles� although there might have been exceptions.,
The diameter of silicon, bronze telegraph wires was two mm4 steel wire'
was three um-
Teletne
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. Hughes teletype equipment was used until 1942 when Siemens (start-stop type)
with automaticcontrol :was installed. in BratislavavZilina� and Presov.
Installation had not been oOMpleted in Banska BYstrica in February 1945.
This equipment was manufactured by Siemens & Nalske, Berlin-Siemenstadt.
Carriers were Used, as well as phantom lines,
'extent.
Carriers
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A cable, completed. about 1932 carried interurban traffic between Presov�
Zilinal and Bratislava. Carriers, amplifiers and repeaters were spaced
epprbliMately-60 km apart. Carriers were also used on telegraph and telephone
poles, using small two channel equipment built by Siemens,. Merlin.
A carrier network (using the wire line of the existing 110 KV power network)
to connect with 716=4,,. i2Tojected middle European network were in
the advanced planning (114�.e br early 1945. Stations were to be located
in Bratislava, Zilina,salWatiA44, and EuzoMberta.. It was to be
4 broad-bond cable wit an unknown nuMber of channels and. cgntrol stations
spaced about 30 km apart. Survey data and, technical specifications had
50X1
been sent to Siemens-Berlin.
Telegraph, telephone'end:-teletype network facilities were government-controlled.
Government radioprinters were connected with Reuters-Londcml Eavas-Pariggp
Ilkaeriin, and Nome. There were a number of Movable military short wave
traaSmittera but
50X1
Nb -special military telegraph or telephone networks eziste4 but priority
was given to all military messageson government networks.
8. Electrification of the railroad line between Presov-Zilina-Bratialava, -which
WaridoVble tracked_dlarP409rld War IIIwas delayed because of shortages of
Material and manpower . ,P0i0iiid_bave.been necessary to recalibrate the
telegraPh and telephone lines along the rightof-away to avoid noises from
We 16 2/3 cycle power used in the projected electrification.
f
SECRET/SECURITY INFORMATION
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2014/11/04: CIA-RDP82-00047R000300210002-2