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Ham Radio . Magnum Experimentum

Antennas, experiments, engineering and other articles of interest to radio folks.

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  • Home
  • Radio Shorthand
    • Morse Abbreviations
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    • RST Signal Report
  • Tech Talk
    • Antenna Gain
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    • Logging Software
  • Amateur Radio, Why?
  • About
    • Privacy Policy
    • Terms and Conditions
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Lab Shootouts

‘UHF’ Connector Test Results

January 11, 2017October 3, 2011
Insertion Loss of Various Connectors

Real measured data reveal the UHF (PL259 and SO239) connectors have real limitations.

Categories Connectors, Lab Shootouts Tags BNC, measurement, N, PL259, SMA, TNC, UHF, UHF connector

Lab Tests: SMA, BNC, TNC and N Connectors

May 28, 2016August 6, 2011

Lab tests show post WW2 connector designs perform exceptionally well up to 500 MHz. The SMA, BNC, TNC and N connectors are great.

Categories Connectors, Lab Shootouts Tags BNC, measurement, N, PL259, SMA, SO-239, TNC, UHF connector

PL-259/SO-239 Return Loss and Attenuation Test

May 28, 2016August 3, 2011

We pit the PL-259 (and SO-239) against more recent connectors. This is the list of contenders plus a description of the test setup.

Categories Connectors, Lab Shootouts Tags BNC, measurement, N, PL259, SMA, SO-239, TNC, UHF connector

Pretty Lousy? (PL) 259 Connectors

May 28, 2016July 29, 2011
Various PL259 and SO239 Connections

The PL259/SO239 (aka UHF) connectors have harsh critics and religious defenders. Questionable measurement techniques complicate matters. Let’s clear things up.

Categories Connectors, Lab Shootouts Tags PL259, SO-239, UHF connector

Coax Velocity Factor in Baluns, Does it Matter? Part 2

January 1, 2021August 9, 2010

Test results of the Coaxial Cable Balun and the Folded Balun (aka Pawsey Stub) reveal coax Velocity Factor applies to the former, but not the latter, unlike what many web sites would have you believe. Part 2 of 2.

Categories Antennas, Lab Shootouts Tags Baluns, measurement, Pawsey Stub, Split Coax Stub

Coax Velocity Factor in Baluns, Does it Matter? Part 1

November 5, 2018August 7, 2010

Test results show coaxial cable velocity factor does not always enter into stub length calculations especially in the world of Baluns. Part 1 of 2.

Categories Antennas, Lab Shootouts Tags Baluns, folded balun, measurement, Pawsey Stub, Split Coax Stub

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