Right-- but WRONG! Wouldn't be too concerned about the IMPEDENCE mismatch
at this short distance,
but, in THIS case, as the center conductor of the coax
in the CENTER PIN of the CONNECTOR, might have problem with connection, or
SPREADING the female
center connector, so as to not make good connection with the proper coax in
the future! Jim NN7K


"Richard Fry" wrote in message
...
"Reg Edwards" wrote
Provided the mechanical connection is sound, you can use any coaxial
connectors you like, regardless of nominal impedance, at frequencies
less
than about 300 MHz without any observed ill effects.
_________________

??? Using connectors that don't maintain the characteristic impedance of
the
transmission lines they connect _will_ produce undesired effects. The
effects may be negligible to amateur radio operators used to operating
transmitters into rather high mismatches, but they would never be
tolerated
in most professional operations, including high-power broadcast systems.

Years ago a common impedance for rigid transmission line used in broadcast
systems was 51.5 ohms. Later the more common value was/is 50 ohms. While
a
mechanical adapter was available to allow connecting a 51.5 ohm inner
conductor to 50 ohm inner conductor (SWR= 1.03), better installations
installed an RF transformer section at these interfaces.

A 1.1 SWR at the input of a TV transmit antenna using ~500 or more feet of
transmission line will produce a visible "ghost" in the transmitted
picture,
as seen by a careful observer. At 1.25 SWR it can be seen, and will
objectionable to almost everyone.

RF

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