permanent antenna fixtures?
Before the end October I will be cabling for a new HF antenna I will
mount the antenna on a garage cable end where I used to have an
antenna and still have the mounting brackets and guy supports but I
moved the shack 2 years ago. The feeder length will be 65m-75m from
there to shack and I was thinking of using RG213 or seeing what other
options I might have, I don't have enough RG213 for a continuous run
so will have to either order a new 100m reel or make a junction
/inspection box in the line somewhere, which might be a bad idea. The
feeder will be in a buried plastic pipe as yet unused I put in when I
moved the shack 2 years ago There is about 200mm separation from a shielded
mains feed (another buried 50mm pipe) to the shack for maybe 80% of
the same run so I might have to add a choke at either end and mains
filtering to prevent break through. The pipe is 30mm OD/ 20mm I/D and for much of the length, it is in an almost straight run with no bends so I am sure there should not
be a problem with compression. At the same time I was thinking about
adding a shielded multicore control cable for a rotator, remote
antenna switch or AMU etc (e.g. G3ROO RAMU). I do not have problems
with water in either the mains or the antenna feed pipe as the pipe is
sealed and I inspect it regularly but I would be interested to hear
comments concerning behaviour of wet or submerged feeders with intact
Does anyone have an experience with any negative effects of 'pulling'
this cable through a conduit of this length and any hints what to
watch out for?