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SE-051/t
UHF Aircraft station adapted for Ground Station use
TR-AP 22, Omera Radio, Paris / 49 Rue F. Berthoud, Argenteuil

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überarbeitet am 4.1.2013

After the Swiss Air Force had acquired their first Mirage fighters equipped with Omera TR-AP 22 UHF aircraft radios, there was a similar problem occuring like nearly twenty years earlier: no ground station for this frequency range available.
So Swiss Air Force technicians designed an improvised UHF ground station for field use based on one Omera TR-AP 22 / SE-051 UHF radio in a steel tube rack together with a power supply and control panel, the mobile station got the designation SE-051/t (t stands for "tragbar" = portable).

Transceiver,

220 - 400 MHz, xx channels

telephony, pout ca. 5 W

Receiver section Superhet

Selectivity

Mains power supply, integrated remote control capabilities.

Mit der Beschaffung der Dassault Mirage IIIRS als Aufklärer und Mirage IIIS als Luftverteidigungsflugzeug kamen die französischen UHF - Bordfunkgeräte von Omera auch in der Schweiz zu Einsatz.

Da eine Feld - taugliche Flugfunk - Bodenstation mit Abdeckung des UHF-Bereichs 220 - 400 MHz fehlte, wurde - ähnlich wie früher mit VHF-Geräten - eine improvisierte Bodenstation gefertigt.
Das UHF-Flugfunkgerät Omera TR-AP 22 wurde in einen Stahlrohrrahmen eingebaut, dazu kam ein Netzspeisegerät. Das Bediengerät zur Kanalwahl wurde mit einem NF-Verstärker mit Lautsprecher und einer über Feldtelephonleitungen arbeitenden Fernbetriebsausrüstung in die Bodenfunkstation integriert.
SE-051/t

When the Dassault Mirage IIIRS reconnaissance aircraft and the Mirage IIIS interceptors were introduced with the Swiss Air Force, there was no ground station available which was compatible with the UHF aircraft radios Omera TR-AP 22 which came with the aircraft and which covered the 220 - 400 MHz military aeronautical communications band.

So a portable ground station for use on improvised air fields was developed by Swiss Air Force technicians.
The Omera transceiver itself was installed in a steel tube rack, the control unit with the frequency selector switch, an AF / voice amplifier with volume control and speaker, remote control circuitry and a mains power supply, which all have been made in Switzerland, have been added to make the SE-051/t a self contained complete UHF ground station.

The station SE-051/t has been in service from 1964 until it's liquidation in 1991.

I would be very thankful for further information and images from field use.

further information:
The station is displayed at the Swiss Air Force museum at Dubendorf.

© 4.1.2013 Martin Bösch