Re: So-called "UHF" connectors...

Posted by W8JI on Jul 22, 2010; 7:21pm
URL: http://elecraft.85.s1.nabble.com/So-called-UHF-connectors-tp5326419p5326828.html

> 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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