22a.
Tornister-Emfänger 'Bertha', Torn.E.b
 |
Fritz Trenkle: Die deutschen Funknachrichtenanlagen bis 1945. Band2 "Der zweite Weltkrieg" ISBN 3-7785-2034-2 (1990) |
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Torn.E.b/24b-305 versions 1938 and 1943
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 |
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Torn.E.b VLF/MF/HF receiver (1943), different type plates
over the years...
Torn E.b/24b-305
Frquency range:
96,6
... 7095kHz
Circuit: 4x RV2P800 as RF, RF, Detector, Audio output
(with audio filter)
Power requirement: 2V 0.8A, 90V 10mA. Automatic bias from anode
current.
Power supplies. EW.b and WS(E)bfor 2V, EW.c, EW.c1 and WS(E)c/c1
for 12V.
While it seem to be only one standard version used in Germany, it
is three versions in Sweden,
but verion 1 and 2 differs only in that the second has a resistor
in battery box for 2,4V battery,
the third version has 4x RV2,4P700 and covers a higher frequency
range (195 - 15430kHz).
I was surprised to discover that the German manual for
Torn.E.b/24b-305 dated april 1938 claims incorrect
frequency range of 97-6670kHz, while the Swedish book dated 1942 is correct. I
have never seen
the low range, and my own Torn.E.b/24b-305 dated 1938 (S/N 76788)
has the 96,6...7095kHz range.
The near a douzen receivers I've seen have all the same frequency
range. Wrong information in documents
seem not unusual in these books, and unfortunately they seem to
have been copied in many articles
and as such may seem to have been a sort of truth after some
years.
It was also some German variants, one was xtal controlled, but
they might have been extremely rare.
Circuit diagram is shown on page
901
4x RV2P800
EW.b (Zerhacker) Vibrator
converter, see pg 28b
EW.c (Zerhacker) Vibrator converter, see pg 28b
see page 28c for power supply
considerations using different equipment with the same power
supply cables
f16) A
simple way to connect a loadspeaker to Torn.E.b, Kw:E.a, Lw.E.a,
Fu.H.E.c, Ukw.E.e etc
Swedish documentation
More info:
Hans-Joachim Ellissen: Die deutschen Funknachrichtenanlagen bis
1945,
Band 3: "Funk- und Bordsprechanlagen in
Panzerfahrzeugen"
ISBN 3-928388-01-0 (printed 1991), see pg 186.."33. Umformer
und Wechselrichter"
Technical articles under preparation (received
from PA0SE Dick Rollema):
10a Introduction to German World War II Radio Equipment
12a. German World War II Radio Equipment - Köln
E52 receiver - part 1 (PA0SE Dick Rolema)
12b. German World War II Radio Equipment - Köln
E52 receiver - part 2 (PA0SE Dick Rolema)
12c. Lorenz Shortwave Receiver Lo6K39a
(Lo6L39), The ultimate TRF set [PA0SE]
12d. Telefunken World War II Superheterodyne Receiver Kw.E.a
(Lw.E.a) [PA0SE]
12e. Telefunken World War II Universal TRF receiver Torn.E.b
[PA0SE]
I enjoy collecting
these items and I will show them on my website for others to
enjoy. I am not interested in selling them, however - please do
not ask.
Instead, I hope to help others who collect this type of gear and
would like to hear from them.
All incoming mails are
filtered using MailWasher, so please use an intelligent title so
it is possible to distinguish between friends and spammers.
Correspondence: You may write in English or German, Danish or
Swedish, but I will reply in English (or Norwegian)
2005.02.13
