SE-204 Radiovox; manufactured by Autophon AG, Solothurn.

Autophon developed an adapted variant of the frequency-modulated transceiver SE-203 to be used for connections between the fire control radar system Mk VII and the regimental headquarters in the early fifties.

• Principle: Transceiver, Receiver: Single conversion, IF 4.3 MHz
• Modes: FM (F3) or phase modulation G3E
• Frequency Range: 80 - 87.5 MHz (four crystal controlled channels)
• Sensitivity: FM (F3) / selectivity
• Output Power: 25 W

• Mains: the station's transmitters and receivers can be powered from 220V AC mains.

• Transmitter and receiver each 390 x 215 x 218 mm, approx. 60 kg

• In the mobile stations at the fire control radar systems, a vertikal antenna A 78 Spez was used.
• At the regimental or section headquarters, a remote long distance antenna FA 78 was used.

The station consists of one transmitter S 78 NU and two receivers E 78 NU; a control unit K 78 A is used to remotely control via a 50 m cable.

The radio station Radiovox was developed by Autophon in around 1951/52, it was used by police forces and the Air Force. As SE-203, this station was adapted for communication with the aircraft command vehicle (FLEIW) and as SE-204 for communication with the fire control radar.

The eight stations were used by anti-aircraft units, four stations located at the regimental headquarters and four stations in the fire control radar Mk VII sites.

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• SE-204 (Radiovox) on Hamfu website