
1) Radio frequency antenna type
Found on
https://www.crosswordclues.com/clue/feed-horn

In satellite dish and antenna design, a feedhorn (or feed horn) is a small horn antenna used to convey radio waves between the transmitter and/or receiver and the reflector, particularly in parabolic antennas. In transmitting antennas, it is connected to the transmitter and converts the radio frequency alternating current from the transmitter to r...
Found on
http://en.wikipedia.org/wiki/Feed_horn

A device which collects the signals at the focus of the satellite dish and channels them to the LNB.
Found on
https://www.encyclo.co.uk/local/22375
No exact match found.