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Re: Source for F to N/SO239 Adapters



on 2/26/01 11:42 AM, Lonnie (NT6B) at nt6b-vk7lm@dreamsoft.com wrote:

> Note the Input side or the top of the 2880?...."N" connector or for some,
> "50" ohms...Connectors in and of themselves are not rated in ohms, only
> "Type" such as "F", "N", "PL259", "BNC", "SMA" etc. Whatever design
> features of the output requiring 75 ohm coax (Through a "F" connector) is
> meaningless for us using the 2880.

This is NOT correct.  Connectors most certainly DO have impedances.  The
only one that does not is the PL-259 as it is a variable impedance connector
(there may be others as well).  But have you ever seen a 75 Ohm N-connector?
They sure do exist and if you try to mate a 50 Ohm male to a 75 Ohm female
you will destroy the 75 Ohm female as the center contacts on the 75 Ohm N
connectors are narrower.

Connectors do indeed have impedance assigned to them!  In fact, one of the
most crucial specs that manufacturers put on them is the VSWR specs.  This
is meaningless if they don't have an impedance.

73,

Jon
NA9D

-------------------------------------
Jon Ogden
NA9D (ex: KE9NA)

Member:  ARRL, AMSAT, DXCC, NRA

http://www.qsl.net/ke9na

"A life lived in fear is a life half lived."

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