Bill Coleman wrote:
N connectors, while constant impedance, have their own problems. Biggest
of which is the disconnection of the center conductor when the coaxial
cable becomes very cold and shrinks.
In Finland N-connectors were used in mobile network antennas in towers
for many years. Nowadays 7/16-connectors are taking their place.
Temperatures in Finland during winter are sometimes very cold, even
lower than -50C.
When coaxial cable is shrinking, it is coaxial cables fault. Reason is
poor quality cable, not the connector.
For the frequency range of the K2/100, there's no reason to move to N
connectors, unless you want to spend money.
I agree what comes to frequency range. I have measured UHF- or
PL259-connector's return loss. They are very good in HF and lower VHF
bands. In 430 MHz I wouldn't recommend PL259, even when using super high
quality like Spinner.
N is ofter water tight. Can you find PL-259 which can be put into water
for 24 hours? And get adequate return loss measurement results afterwards?
Rolf Moberg
oh6kxl
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