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SE-013/f
Radio Set SCR-522 (BC-624 / BC-625) adapted as fixed ground station
Bendix Radio, Baltimore

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überarbeitet am 4.1.2013

Shortly after WW II, the Swiss Air Force acquired a number of 130 fighter aircraft P-51 "Mustang" from U.S. Air Force surplus. These aircraft transferred from occupied Germany to Switzerland by Swiss pilots were equipped with the standard VHF transceiver SCR-522 which got the Swiss designation SE-013.
As there were no VHF band ground stations in service (before, long- and shortwaves have been used for all aircraft communications), the technical department of the Swiss Army constructed complete wireless ground stations from reserve sets and spares.
These served installed in a metal rack together with a mains power supply as improvised ground stations or as VHF relay in "mountain stations".

Transmitter / Receiver,

100 - 156 MHz, 4 crystal controlled channels

telephony A3, pout ca. 9 W

Receiver: superhet, Z.F. 12 MHz

Selectivity
 

Controlled from swiss made front panel, integrated mains power supply.

The Bendix Radio Corp. located at Baltimore developed the american standard VHF aircraft radio system SCR-522, it was used in different U.S. (fighter) aircraft.
When the Swiss Air Force acquired 130 fighter aircraft P-51D "Mustang" from american war surplus in 1948, the airplanes came with radio sets SCR-522 already installed.
The technical department of the Swiss Army constructed from reserve receivers and replacement parts complete wireless stations.

In the variant for fixed operation SE-013/f, two complete transceivers are installed in a huge 19" rack. Front panels with all necessary controls and even a control instrument were constructed in Switzerland. The original control boxes with the frequency channel selectors were integrated in the front panels in their original shape.
In another variant, the equipment installed in a steel tube rack served as improvised field ground station (see SE-013/t).

Frontplatte SE-013/f
These stations could be operated locally or remote controlled and were in stalled in the Swiss Air Force "mountain stations", where they served until 1991.

I would be very thankful for further information and images of the equipment used at "mountain stations".

further information:
Information from the Swiss Air Force Museum Dubendorf, where the equipment is displayed.
e: Technical Manual TM 11-509 der U.S.Army

© 31.12 .2012 Martin Bösch