Radio Control Unit

Control Radio Station
PV1753 L (Manual)
630/1/37853/010
NATO No. 5821-99-652-0259
Serial No. 0227
Mod. Record -
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This equip contains
static sensitive devices
consult servicing manual
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Marconi Electronic Systems
Customer Support Group UK

The ESD1753N is the Manual controller option from the ESD1741 lightweight V.H.F. military airborne transceiver. The system is designed to provide high-reliability air-to-air and air-to-ground communications in all types of helicopter and fixed wing aircraft and is intended primarily for air traffic control use.
The equipment consists of two units, the transceiver and the control unit. Two alternative control units are available which either provide manual selection only of frequency or manual selection of frequency plus 30 preset channels. Both control units incorporate a built-in test equipment facility to check output power, modulation depth, and receiver sensitivity. A non-volatile store is used to provide the preset channel memory.
The ESD1741 is designed such that it can control two transceivers, one V.H.F. and the other U.H.F.
Power for the transmitter and control unit is taken from the aircraft +28V d .c. supply.
The Brochure D0420 states that the equipment came from GEC-Marconi Radar and Defence Systems at Portsmouth and is dated 1996 suggesting that the equipment is at Rochester either for the Nimrod or Merlin programmes. Another source suggests that the PV1753 number is a Plessey number.

Manual controller (ESD1753N): (The dimensions in the Brochure differ from those actually measured)
Width: 146.05mm
Height: 47.6mm
Depth: 100.25mm (excluding front panel controls and rear connector)