TR3174 Eureka MKII with
formed a system of ground based beacons and airborne direction finding
designed initially to assist the air-drop delivery of supplies to the
or Resistance groups in occupied Europe.
Eureka was the
based beacon and Rebecca the airborne station.
beacon was a super-regenerative receiver and transmitter
in the frequency range 214 - 234 MHz, powered from a battery via a vibrator power
unit. A portable tripod mounted aerial was erected when communications
The system was
designed by TRE, and manufactured by Murphy and Cossor. A number of
versions of Eureka were designed and manufactured in both the UK and
Details of the Rebecca
Unit, Indicator Unit No. 96, will be listed separately under its own