D/F Outfits FV4 and FV5.

  FV4 was an earlier VHF DF outfit consiting of a P104 receiver and a goniometer which was fitted in Naval Air Stations and some aicraft carriers. It was replaced by the FV10.

  FV5 was a fully automatic VHF Direction Finder giving a continuous visual indication of the bearing. It is installed in aircraft carriers and at Royal Naval Air Stations.

FREQUENCY RANGE

FV4 and FV5 - 100 to 150 Mc/s.

FURTHER READING

Details of FV4

Details of FV5