text: Communications In the LRP, most of the radio operators were New Zealanders, but the LRDG radio operators were all from the Royal Corps of Signals. These men were skilled in communications and were able to maintain and repair their equipment without any outside help. On only three occasions did a broken radio prevent a patrol communicating with its headquarters. All LRDG patrols included one vehicle equipped with a Wireless Set No. 11 and a non-military Philips model 635 receiver. The No. 11 Set had been designed for use in tanks, and had transmitter and receiver circuits; the Royal Signals expected to use the No. 11 set to transmit and receive between  and  with the use of  or  antennas.
  The LRDG used Morse code for all transmissions, and were able to transmit over great distances using either a dipole antenna system attached to a  rod antenna mounted on the truck, which was adequate up to , or for greater distances, a Windom dipole system slung between two  tall poles. The disadvantage of using the Windom system was that it took time to erect and work out the correct antenna length, so it could only be used in a relatively safe area. To power the No. 11 set extra batteries had to be carried by the radio vehicles.
  The Philips receiver was used to monitor Greenwich Mean Time (GMT) time checks, which was vital for desert navigation.