[Elecraft] So-called "UHF" connectors...
Tom W8JI
w8ji at w8ji.com
Thu Jul 22 15:21:20 EDT 2010
> inside....but I do think that the issue with standard "mud" type UHFs is
> with the durability of the dielectric, not with the impedance bump, at
> HF and even low VHF frequencies.
That's an accurate statement John. The largest bump I've even measured with
a SO239 PL259 pair was about 1.05:1 at 147 MHz.
The highest SWR with two in tandem, with optimum spacing between bumps to
enhance SWR error, was around 1.1 :1.
Like Motorola and other have done in the past, I think nothing of a few UHF
connectors on 2 meters. Barrel connectors can be a problem at VHF, because
they can have a long mismatch area, but not properly installed UHF pairs or
good short barrels.
That goodness length matters, because look at the horrible mismatches in
wiring inside our radios and tuners.
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