überarbeitet am 31.12.2012
The Telefunken aircraft wireless station Stat. 1005b F has been evaluated
to be installed in single-seated fighter aircrafts of the Swiss Air Force.
This sets could be remote controlled with the Telaccord mechanical tuning
adapter produced by Autophon AG, and this was required that the sets could be
operated by the pilot and a wireless operator occupying a second seat on a
plane was no more needed.
The aircraft wireless station FG X, which later got the designation SE-010, has been produced under Telefunken licence by Telefunken Zurich, the electromechanic remote control / remote tuning adaptor Telaccord has been produced by Autophon AG, Solothurn.
The wireless station FG X consists of the following components: Transmitter
AS 1009 with Telaccord adaptor "S" (for "Sender"), the antenna tuning unit Al 1011
with Telaccord adaptor "A", the receiver Ae 1010 with Telaccord adaptor "E" (for "Empfänger"),
and the dynamotor Ak 1073.
In contrast to earlier equipment like the FG IX, all functions from dynamotor start, selection of operation mode, frequency selection (five frequencies had to be pre-tuned), receiver fine tuning up to automatic switching of the antenna relay could be remote controlled.
The two stage transmitter covers shortwaves from 6000 - 12000 kHz, a RS 287 is used in the auto-oscillating driver stage and two RS 287 in parallel in the RF output stage. Two NF4 valves are used as modulation amplifiers. The RF output is similar to the one of the FG IV: 60 Watts in telegraphy CW and 25 Watts in telephony and modulated telegraphy modes.
The receiver is a superheterodyne and covers 6000 - 12000 kHz, it has three tuned RF circuits, four IF circuits and a AF output stage. In all stages, also in the oscillator and the beat frequency oscillator, NF4 valves are used.
The heater voltages for the transmitter and receiver are directly taken from the aircraft on-board power system, the plate and grid voltages are generated by dynamotors from the 27 V primary voltage.
With the cable sets, the transmitter (8,78 kg), receiver (7,75 kg), antenna tuner (3,65 kg) ans dynamotor (12,15 kg), the complete systeme has a weight of 64,25 kg for single-seated aircraft and 66,69 kg for double-seaters respectively.
I would be very thankful for further information and images.
© 31.12 .2012 Martin Bösch