[amsat-bb] Re: Elk Antenna vs Arrow Antenna
domenico.i8cvs at tin.it
Sat Dec 27 10:35:29 PST 2008
PL-259 is NOT a constant impedance connector while N connectors
or C, BNC, TNC, SMA are constance impedance and this make a great
difference matching devices to 50 ohm when the frequency becames high
and the lenght of a PL-259 is a considerable part of a wavelenght.
Figure out what happens using a PL-259 at 10 GHz i.e. at a wavelenght
of 3 cm
Since N/m (male connector) or N/f (female connectors ) are constant
impedance provided they are properly assembled to the coax cable they
can be used up to 12 GHz
For additional informations read the following page.
----- Original Message -----
From: "Nigel Gunn G8IFF/W8IFF" <nigel at ngunn.net>
To: "Edward Cole" <kl7uw at acsalaska.net>
Cc: <amsat-bb at amsat.org>
Sent: Saturday, December 27, 2008 5:53 PM
Subject: [amsat-bb] Re: Elk Antenna vs Arrow Antenna
> Terminating N connectors (or C, BNC, TNC and others) is identical to
> terminating PL-259s if you buy good quality 259s.
> Edward Cole wrote:
> > What I hear from local hams is "its too hard to assemble N
> > connectors" to which I say "hogwash" (a US term meaning
> > ridiculous).
> Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
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