Subject: Re: How to check for a 50 or 75 ohm connector
Summary: What do you think of these ping times eh?
Reply-To: You can't see me, and I pass right through planets...
References: <3E053579.AFE0BFDF@sympatico.ca> <email@example.com>
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Date: Sun, 22 Dec 2002 11:34:08 GMT
NNTP-Posting-Date: Sun, 22 Dec 2002 06:34:08 EST
On Sun, 22 Dec 2002 08:25:29 +0000 (GMT), Tony Williams
>In article <3E053579.AFE0BFDF@sympatico.ca>,
> Dave Holford wrote:
>> Although I have never noticed any obvious difference in the dimension of
>> BNC connectors, other than the cable size, I have always understood that
>> the difference between the 50 and 75 Ohm "N" connectors was the pin size
>> and that attempting to interconnect them could result in damage to the
>> connector if attempting to insert a large pin, I forget which was which,
>> into a small diameter socket.
> AFAIR the 50 Ohm pin is significantly larger than the 75 Ohm.
Only the rear, wire insertion hole differs in size. The pin itself,
on the plug insertion side, is always the same within a connector
Not among the same connector "class". You are probably thinking of
the "UHF connector" which are all typically 50 Ohm and is a much
larger connector overall, and the BNC which is smaller, yet works with
many impedances, and many cable sizes. The plug side, however, is the
same for all BNCs and for ALL UHFs.
Here's a good way to think of it.
A cable is a cable is a cable, and there are a lot of different
A connector is a connector is a connector, and there are a lot of
different ones, but they are all the same within each connector type.
They only differ in impedance class at their rear, cable insertion