1. AVIATION COMMUNICATIONS AND RADAR 2. TESLA RADIO RECEIVERS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00046R000100070002-1
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 3
• Document Creation Date: December 27, 2016
• Document Release Date: May 21, 2013
• Sequence Number: 2
• Publication Date: July 30, 1953
• Content Type: REPORT

Declassified
50X1
in Part - Sanitized
Copy Approved
Osechoslovakia
Mei Akeittigent alardattpiastioa0
2. Tesla Radii
for Release @ 50-Yr 2013/06/12
tICULITY INPORMATICIK
CIA-RDP82-00046R000100070002-1
REPORT
DATE DISTR.
NO. OF
NO. OF
ammoinm
? SUPPLEMENT
REPORT
COUNTRY
SUVICT
PLACE
ACQUIRED
DATE
ACQUIRED
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lie rs
PAGES 3
ENCLS. 2
TO
NO.
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and Radar
Receivers
DATE OF INFORMATION
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THIS IS UNEVALUATED INFORMATION
50X1 1. Each atrfield had its own communications squadron. The miiita
airfields had military oommunioitions personnel, and the
airfields employed civilian personnel, vho'rerved at contra tower
clarstors, radio operators, goniometer operators, serviced the a r-
tield:lighting,systems (runway lights, approach lights, etc.), id
stood guard duty and alert detail.. The squadron strength varied
according to the importance of the airfield and the Init miSlIQA.
IlOtthe military airfield at Havlickuv Brod ,0936N-153 ,
50Xt there were 30 - 40 persons in the Communications.Squadron:
Every airfield control tower had -radio equipment. Transmitters ahd
reoeivers such as the liormanA3.tataioVUO-100 and710-16 were used.
At the start or the end of runways there was static W/T
transmission) of equipment.- This -D7 equipment had loop antennae
fixed at 90%#. The 11110.46 wal-Uted-fOrrtiOi(WcommunicationNi#h tighten!
aircraft. The PWUYsn4.lialtated4v1m*Amo4 for voice and W/T communi-
cationo with aircraft. DF equipment was used as navigation, and
landing aid (OH). It was manned on request according to the current
type of operations, During non-active periods only a skeleton Ifatch
remained on duty with this equipment. The number of operators
varied from two to four. All military operators were NCO's. Main
Power supplied were normally used. Stand-by generators were avail-
able for emergencies.
INOORMATIaN
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/06/12 : CIA-RDP82-00046R000100070002-1
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/06/12 : CIA-RDP82-00046R000100070002-1
SECRET/SECURITY INFORMATION
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There was a field telephone link between the control tower and the
DF site. At the Havlickuv Brod airfield there was direct contact
between the DF\site and the main switchboard of the airfield. At
Brno, contact frbm the main switchboard to the DF site was made
through the control tower.
A radio network was established between all airfields (with Prague
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missions). There were also radio links between the various DF
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Call signs and codes were changed fre-
quently; frequencies were changed infrequently. There was also
a land line telephone connection between airfields.
r ? un
w/T.
ra ar s a one som
343.. '.MNAAAt11,431; ITETWV117477?1?.
rormatIon riights were directed by radar stations. Only, the
flight (squadron) leader received the information given by the
radar station. Other aircraft in the formation did not use WA
but voice contact. This communication had to be kept to a minimum.
Not all aircraft in a flight necessarily had the same communication
equipment, and somenter-aircraft communication had to be by
Th
hand signals./is lac of uniformity of equipment caused confusion
in the fly-pa 1st led by eneral MANUS on May Day 1951. Only a few
ofthe Messerohmitt air raft which ahould have been in the fly-past
actually joined the formation. Amazingly, there were no crashes
when, due to lack of communications, a group of Messerohmitts flew
through a group of Siebels. Other than hand signals, no inter-,
away from the parade center. Upon landing, there was much argu-
formation communication was possible. (This incident took plaoe
ment among the pilots as to who had been at fault. Approzimately
54 of the 150 Messerchmitts scheduled to take part in the display
completed the mission successfully. IL-10 formations were ragged.'
50X1 ;eta flew singly. The official reason given for the failure of the
50X1 display was the exiatence of a ground haze.
Actually, the visibility was Pod.
it was the consensus that
50X1 one poor Quinsy was due to the lack of good communications.
50X1 7. The PUO-16 was used on Arado and Messerohmitt aircraft. There was
a loop antenna on top of these aircraft and some also had a double
50X1 "clotheswline" antenna from cabin to tail. The PUO-10 was used on
, Siebel aircraft, with "clothes-line" antenna and a trailing aerial '
50X1 for long _distance communication. The Siebel also carried Lorenz
' aerials
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"clothes-line" aerials were used on 7U-2 aircraft
In 1953 the Teals faotory was produoing electronic
e ui ment-.--
the same firm orocuceo civilian radio and television
rece vers, and Teals receivers
and transmitters were used by the OSA at Prague-Rusyne. 1
;;;;
ne. It operated as a receiver unit.
a Tesla unit in the office of the chief of crews at Prams-
price,:
listed below some Tula civilian radio receivers and their
SECRET
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/06/12 : CIA-RDP82-00046R000100070002-1
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/06/12 : CIA-RDP82-00046R000100070002-1
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SECRET/SECURITY INFORMATION
-3-
Blanik 11,000 Crowns
Vltava 7,000 Crowns
Talisman 5,000 Crowns
Largo 11,000 Crowns
Klasik 7,000 Crowns
10.- CSA radio operators .bragged that Tesla ,transmitters and receivers
used by the CSA were very good.
Tesla was working on
the development of a VHF set which would use 32 crystals.
11. At Brno-Slatina,
plate marked Lorenz,
airfields.
an
teletype installation carrying a name
presumed it was connected to other civil
12. As let-down aids civil airlines in Russia, Hungary, Bulgaria and
Rumania used QGHs(international "Q" signals) or radio compass.
50X1 In Poland and Czechoslovakia, QGH, radio compass and Lorenz beam
were used.
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SECRET
Declassified in Part - Sanitized Copy Approved for Release @ 50-Yr 2013/06/12 : CIA-RDP82-00046R000100070002-1