I have never considered a BNC connector to be a truly constant-impedance
connector. Constant impedance applications require the use of
constant-impedance hardline, "N," "TNC," or the "SMA/SMB," et.al., variety
of connectors. I also disagree with your assertion that a "UHF" PL-259
connector is both a 50-ohm and 75-ohm connector in one!
Anyway, Steve Davis has pointed me in the right direction for what I had
asked for: a crimp BNC connector for RG-8X. Thanks Steve!
-Paul, W9AC
-----Original Message-----
From: Jim Pratt <n6ig@netcom.com>
To: Paul Christensen <paulc@mediaone.net>
Cc: towertalk@contesting.com <towertalk@contesting.com>
To: <towertalk@contesting.com>
Date: Monday, September 21, 1998 5:18 PM
Subject: Re: [TowerTalk] RG-8X Crimp BNC Connectors
>On Mon, 21 Sep 1998, Paul Christensen wrote:
>
>>
>> Does anyone know if there is a crimp style BNC connector made
specifically
>> for RG-8X (Belden 9258)? Are the geometries of RG-59 sufficiently close
to
>> allow for connectorizing with a RG-59 BNC type?
>
>Not only shouldn't you use RG-59 connectors on RG-8X for reasons already
>stated, but remember RG-59 is 75 ohms and RG-8X is 50 ohms. There are
>differences between a 50 ohm and a 75 ohm BNC connector (assuming they
>are precision connectors) to maintain constant impedance, and you should
>never try and interconnect the two, lest you have problems! The same
>holds true for type "N" connectors, but for so-called "UHF" connectors
>they are the same for 50 and 75 ohm cables.
>
>Good luck and 73!
>
>Jim N6IG
>
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