Teletron - Pfitzner TE 704 C
Teletron - Pfitzner, Frankfurt a/Main

Swiss Army Communication Sets
Synoptic Table
Army Receiving Sets
Exxx Designations
E-600 / Autophon E39
E-601 / Zellweger E41
E-602 / Autophon E44
E-603 / Autophon E45
E-604 / Autophon E46
E-606 / Velectra
E-627 / Autophon
E-628 / Autophon
E-629 / Collins 51J-4
E-645 / Siemens E311
E-646 / Zellweger
E-649 / Watkins-J.
E-655 / Racal RA1217
E-656 / Racal RA1772
E-657 / Telefunken
E-658 / R&S EK070
E-659 / Watkins-J. WJ-8888
E-660 / Teletron TE704C
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überarbeitet am 20.4.2012

A small number of all wave receivers Teletron - Pfitzner TE 704 C with the possibility to connect to a radioteletype adaptor TG 44 E has been acquired by the signals intelligence for tests with radioteletype communications.
Teletron - Pfitzner TE 704 C
Double conversion, 1st I.F. 75 MHz, 2nd I.F. 30 MHz

Digital frequency readout, mechanical, BCD switches, 10 Hz

AM (A3A), CW (A1A), FSK (F1B, F1C, F3C)

10 kHz - 30 MHz

Selectivity -6 dB
6 / 3 / 2 / 0,8 / 0,3 kHz


RF Gain, two speed AGC, FSK adaptor, variable shift 150/400 Hz, normal/reverse control

The professional allwave receiver Pfitzner - Teletron TE 704 C is specially designed for radioteletype and faksimile reception. It comes in a very compact 8,5" (half 19") rack unit in a steel desktop cabinet, the receiver itself has a size of 220 x 138 x 395 mm and a weight of 11 kg.
The receiver can be powered from 220 V mains or alternatively from 21 - 32 V DC. At the rear face of the receiver, you find a connector to drive teletypewriter and a multipole connector for remote operation.

In the middle of the front panel, between the analog signal strength meter and the meter for radioteletype reception mark and space signals, you find the frequency switch arrangement. The Teletron te 704 is controlled by an array of seven mechanic switches to control the reception frequency. In contrast to the first appearence from far, there are no BCD switches but a similar switch type, when the switch handle is moved from the upmost to downmost position, the number indicated will change from 9 to 0.
At the left of the monitor speaker, you find the mains switch, the RF gain control and the I.F. bandwidth selector, next to it the switch for the AGC and the reception modes. At the right of the monitor speaker, you find the headphones jack, the volume control and above it the controls for radioteletype operation, for the shift, the polarity and the monitor speaker switch.

The Swiss Army used the Teletron Pfitzner TE 704 C only in small numbers for trials with radioteletype operation.

© Martin Bösch 20.4.2012