Dielectric losses become evident at 2M with 1500W and at 432 400W of
steady
carrier will heat up even the best N connectors and RG-213. For that
reason
many are switching to the 7/16 DIN.
That has nothing at all to do with dielectric losses.
N connectors have a tiny BNC size center pin.
RG-213 have a woven braid and stranded center conductor making the small
center conductor diameter heating and shield heating even worse.
Jim is correct. Conductor losses significantly dominate dielectric losses at
UHF and lower to the point where dielectric loss is meaningless. There are
exceptions, of course, but not with normal parts.
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