Thanks for your reply - unfortunately I tried the Google approach and the Antiference install instructions say "Refer to the amplifier housing for the appropriate aerial input(s), power supply and outlet connections".
So looks like I need to get up on the roof !! :D
Thanks again.
I have just moved into a house with an Antiference Masthead Amp (not sure of the exact model, possibly UX3/UX4) connected to two aerials on my chimney. There are three aerial points in the house each fed by a cable running out of the masthead box. Connected to one of the coaxial cables is a...