Modification to the receive-path waveguide feeder of Goonhilly aerial

A description is given of the new oversized waveguide feeder developed for the 26m satellite-communication aerial at Goonhilly Downs, Cornwall. The feeder loss has been reduced from its former value of 0.7dB, to 0.31dB, using this installation, with a view to enabling the station to work to a new low-elevation Intellsat III satellite.