On 11/11/2013 10:37 AM, Fuqua, Bill L wrote:
Isn't "UHF Connector" an oxymoron?
The name dates from the '30s or early '40s. No question that there's a
small discontinuity due to the Zo of the connector, but it certainly
doesn't matter below 50 MHz, and at higher frequencies is often swamped
by line loss.
Several years ago, I made up a dozen or so lengths of coax for a DX trip
using very low loss cable that I'd bought at a great price, surplus from
a telecom bankruptcy -- construction much like LMR400, except #10 solid
copper for the center, excellent braid/foil shield. As a test, when I
was finished, I connected them all in series, about 1,200 ft, and
measured with HP generator and HP spectrum analyzer up to about 500 MHz.
I had about 23 83-1SPs and 11 or 12 barrels in line. The loss at 500 MHz
was less than the published spec for the cable. Loss was measured by
substitution (that is, differencing a short direct connection between
generator analyzer with the cable under test) at all of the test
frequencies.
73, Jim K9YC
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