07-09-2024, 04:36 PM
I've made a couple of fan dipoles over the years, spreaders being that black garden irrigation tubing that is about 15mm diameter. I also use the same for the feeder for my HF doublet. See pix.
The fan dipole end pieces were sprinkler fitting tubes i.e. about 8mm diameter hard plastic that would have a nozzle fitting on the end and the other end punches into the water feeder tube. Or you could use this type as spreaders too, if weight is an issue.
Fan dipoles are a mongrel to tune though - much raising and lowering and fiddling overall lengths of each dipole, which obviously interact with each other. A two band type would be easier to tune though.
The fan dipole end pieces were sprinkler fitting tubes i.e. about 8mm diameter hard plastic that would have a nozzle fitting on the end and the other end punches into the water feeder tube. Or you could use this type as spreaders too, if weight is an issue.
Fan dipoles are a mongrel to tune though - much raising and lowering and fiddling overall lengths of each dipole, which obviously interact with each other. A two band type would be easier to tune though.