For the first tests and operation in 6cm band I chose a proven design of Septum feed with square waveguide, isolation SMA relay and VLNA from DB6NT production. The feedhorn is complemented by a W2IMU collar for use in offset dish or a chaparral collar for use in portable operation with a 1.8m diameter PF dish.

New feed 5760 MHz - dish F/D 0,6

This is how the new feed for the 5760 MHz band looks like. It is a combination of a septum feed in a circular waveguide and a W2IMU collar. TX port SWR -33dB RX port SWR -32dB

The feed consists of three parts, a brass cube, a copper tube and an aluminium collar.

This picture shows a detail of the location of the septum baffle in the copper tube

This image shows a detail of the septum baffle placement prior to soldering in the pipe cutout

This picture shows a detail of the location of the septum baffle before soldering in the cube cutout for the connectors

Feed assembly before final soldering