VEB WERK FUER FERNMELDEWESEN TUBE PRODUCTION IN MAY 1955

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00810A007300290011-1
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 4
• Document Creation Date: December 20, 2016
• Document Release Date: December 7, 2007
• Sequence Number: 11
• Publication Date: July 13, 1955
• Content Type: REPORT

Approved For Release 2007/12/07: CIA-RDP80-0081 OA00730029001 1 -1
lrL1V'1'w L -LN'1'iIA,-LU1SNUB AGEfyUy
INFORMATION REPORT
`~Y_RS'i r!1
DATE OF INFO.
PLACE ACQUIRED
DATE ACQUIRED
of late Ma -*-as at vg werk fuer Fernmeldewesen as
Y 1955 was as follows.
East Germany
VEB Werk fuer Ferfineldewes en
Tube Production in May 1955
This is UNEVALUATED
Information
THE SOURCE EVALUATIONS IN THIS REPORT ARE DEFINITIVE.
THE APPRAISAL OF CONTENT IS TENTATIVE.
13 July 1955
The status of tube develo 4-
1* Tube, Type -9W l - a high-power modulation tetrode tube copied from
On existing Telefunken tube; developmental work has been completed and
the tube is being put into production,
This material contains information affecting the
National Defense of the United States within the
meaning of the Espionage Laws, Title 18, US.C.
.
person 793 and 794, the transmission or
revel-
ation of which in any manner to an unauthorized
is prohibited by law.
REPORT L
DATE DISTR.
NO. OF PAGES
REQUIREMENT
REFERENCES
transmitters cannot be used because types of tubes for television
(Eigenkag,zitaet). ause they have too high a self-capacitance 25X1
3? Ceramic Tubes - developed and Produced for the USSR
Development and Production has now been 'to to late 1levied no further requirements far c Peed because the USSR has.
-
2. Tube Type SA 100 and SA 101 - diodes for measurd
wise copied from a Nalefunken tube. The shortsga of devices, like-
personnel has caused great difficulties in the qualified technical
They are currently producE~d on production these tubes.
transmitters. The available 1y as replacement tubes for television
e
put out in three models. s change during operation. The P50 is
Model I - nor 1p , ve 25X1
~ poor quality
Model TI tubes provided with ged
Model I" - tubes with gold-plated grooved grids fitter); soMewhat better
but not on a grids; the best of the three
par with 'l:hrs T _Q =,,
6. Tube Type P50 - a copy of TelefuNcen
siderably poorer quality than its Telefunkenem d 1500 . The P50 is of con
medium e
and high frequency (Grelle) is much 1 The limit wave between
Tlelefluiken, At 75 MHz considerable difficulties spree ineurretdhat a of th
the characteristics of the tub
Also
uc
ed is very low
atuc Tubes - nothing is known concerning developmental work.
Miniature tubes are being Produced in VEB for these tubes are large, since they are rk Erfurt. Requirements
it is difficult to meet East German demands exported to China. As a result,
ramie tubes,
4. Radio Tubes - the quality of the tubes prod
FBI AEC
Approved For Release 2007/12/07: CIA-RDP80-0081 OA00730029001 1 -1
 Approved For Release 2007/12/07: CIA-RDP80-0081 OA00730029001 1 -1
Pagt 2
74 Ultra-Short-wave TUbea The following are currently in developments
a4 Tet'ode M 451 25X1
Filament volts V
Filament current ( - 15 A
Anode vol
Grid powe- _ _
logs (q . W
ASO (U)-3kV
Power (N ) - 400%
idmitingafrequency ( ntrequenz) (f ) - 200 ?
Capacity between grid and cathode 444 pp
Capacity between anode and cathode (gam) 00
.049 pp
Capacity between grid and anode (C ) - 041 F
go p
Capacity between cathode and grid 2 (screened grid) (C 2.4 pp kg2
Capacity between grd 1 (control, grid) and grid 2 (,screened grid)
g1
Capacity between grid 2 (aa grid) and 1aode (C ) - 4, 3
dam: pF
Cathode curt (c) - 043 A
lnvasrse amplification factor (Da rObViff (D) - 18 6
Grid plate tranasconductaaxaee (S) a `x < 25 m
Annda1 /URff4Y~eaa~. BT % _
Do irlode $ L 3519
'ilament vintage (U) - 5 V
Filament current ( ) - 50 A
.Anode voltage (Da) - 4 kV
Anode cunt (I) - 0a 5 A
Power (N.) ? 145 kw
Limiting f quency (g ) - 200
Capacity between grid and cathode (Cgs) - 16 pF
Caapacity between anode and cathode (C ) - 0406 pF
Capacity between gr d and anode (so 13 pF
Grid power loss (Qg) 080 w
Cathode current (i) - 145 A
Ikaverae amplification faactor (D) - 345%
Grid plate tavanaconduc?
c 4 Triode SRL 352
Filsmaent voltaa ? OV
Filament current (Is) - 75 A
Anode voltage (U) 441 kV
Anode current (e) 142A
Power (F) - 5 kw
Limiting frequency (f ) 200
grenz
Capacity between grid a
nd cathode - 21 pF
Paage 2
Approved For Release 2007/12/07: CIA-RDP80-0081 OA007300290011-1
25X1,
 Capacity between anode and cathode (C ) 0
~pa~ty between Ak 5 PF
grid and Anode ( ~) _ 11 pF
Arid power ioae (Qg) 1cm to 150 W
cathode current O @ 2
Inverse , zifioaetion factor (D) - 4,o5%
Grid plate transconductance (BY ? 24 mA/V
Approved For Release 2007/12/07: CIA-RDP80-0081 OA00730029001 1 -1
do Triode 8RL3
Filament Voltage ;U
h) ~ 503 V
power loss (Q.m 300
Cathode current (I 4) = 4.5" A `
Inverse amplification factor (D) m 2,5 I 11 Grid plate transcoa iuctance (s) ~-40mA/V
CWcitby between 9 *4 and cathode np
Capacity between al*de and cat>h (Cad 2
Opacity between gi Ld and and=s C
(, a~31
a"IA 1F
Filament current (~) 0 160 A
Anode Voltage (U) 7.5 W.
Anode current (a) m 4 A
12 kW
Limiting frequency .(f) 0 120,.x. .
eo TSU'Oft SEL 452
Capacity between cathode and
':e" Grid .2 (+sarreeruci
Md)
'
6
(C
Capacity between WY m. .10 pF
grid l (contrl id
' )
Cathode current (3i)'- 2'A
.Inverse amplification facer (D) JL5
Ch m
id plate transconduatame (g) 0 17 ,nAft
(Cgs) 33 0 ~
and grid 2.(sgreeried grid)
Capacity between. grid 2 (screened grid) and anode (C ) - 13.
(arid power loss (Qg) - 100 W
Pe 3
Approved For Release 2007/12/07: CIA-RDP80-0081 OA00730029001 1 -1
Anode Voltage (Ua)
4 kV
Anode current { a)
Power (Nc) 3,5 kW
1.2 A
Filament Voltage Uj = 705 V
Filament current (Ia) a 72 A
Limiting frequency '(f d
grew) 120 MHz
Capacity between grid and cathode .(C 1,5 OF
Capacity between anode and cathode (C
Oolp
Capacity between grLd and anode (C ) m 009 pF
25X1
25X1
 Approved For Release 2007/12/07: CIA-RDP80-0081 OA00730029001 1 -1
fo Triode SRL 354J
Filament voltage (U12) - 7,5 V
Filament current (i~) - 160 A
no further data known
go Triode SRW 353 (water cooled)
Filament voltage (Uh) 5,3V
Filament current (1h) - 160 A
Anode current (Ia) - 3 A
Arcade voltage (Us - 6 kV
Power (a) - 20 kW
limiting frequency (
) 200 !z
grenz
Capacity between grid and cathode (Cgk) 59.pF
Capacity between anode and cathode (C ) - cos pp
Canan1 tv s,.+e ,.-
Grid power long (Qg) - 400 W
@ahode current (Ik) - 5 A
(Cg) -. 35 PF
Inverse amplification factor OD).- 2056
Grid plate tzaneoo uotance (8) - 40 mA/V
Page 4
25X1
I
25X1
Approved For Release 2007/12/07: CIA-RDP80-0081OA007300290011-1