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 ground stations.

In the variant for mobile operation SE-013/t, one SCR-522 transceiver is installed in a steel tube rack, together with a mains power supply and a voice amplifier with integrated speaker. The original pilot's control box with the frequency channel selector is integrated in the station.
This SE-013/t setup was used by the flight control officer on improvised air fields.

In another variant, two transceivers installed in a 19" rack served as fixed ground station and relay in "mountain stations" (see SE-013/f).

The VHF station SE-013/t (portable) with SCR-522 in a steel rack, a speaker unit, frequency selector control box and power supply for mobile ground station use on improvised air fields. This set is part of a Swiss private collection.

I would be very thankful for further information and images of the equipment in field use.