I know that there is a school of thought that a piece of wet string will do for a feeder on a summit, but I do not subscribe to that opinion. Having actived some shielded summits (GW/MW’s, etc) has reinforced my view that the choice of coaxial cables is an important issue, especially for the higher frequency bands.
Currently I am using RG-58U for 2m (as supplied with the SOTABeam SB5) and a 4.7 metre length of 5D-FB 7mm semi-rigid for 70cms, both with BNC connectors. I now need to sort out a decent feeder for 23cms and I am tempted to obtain another length of 5D-FB, but this is rarer than rocking horse droppings. I have only see it available as a made up lead for mobile use and of late only short lengths have been advertised.
While searching for the source of a suitable feeder, I came across Mini 8 cable which I understand to be equivalent to RG-8 / RG-8X which has better characteristics than RG-58U. I wonder whether anyone is using this cable on the higher frequencies and if so whether it performs reasonably, both electrically and physically. Suggestions for an alternative would also be appreciated.