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...
X-Newsreader: Forte Agent 1.91/32.564
Date: Sun, 22 Dec 2002 20:53:07 GMT
NNTP-Posting-Date: Sun, 22 Dec 2002 15:53:07 EST
On Sun, 22 Dec 2002 19:53:14 +0000, John Woodgate
>I read in sci.electronics.design that DarkMatter endoftheuniverse.org> wrote (in com>) about 'How to check for a 50 or 75 ohm connector', on Sun, 22 Dec
>> One can purchase the simple "consumer electronics" "F" style
>>connector in a number of cable termination sizes. Depending on WHICH
>>cable gets used, the impedance will differ. The PLUG side, however is
>>ALWAYS absolutely identical.
>Since the 'centre pin' of an F-connector plug is the inner conductor of
>the cable, I don't see how it can always be the same size!
Ok OK. In the case of the "F" connector, which utilized the center
pin of the cable itself yes. I knew that, but missed it in my
statements. You are correct. It is, however, proven more so by that
remark that the impedance is determined by the cabling, not the
This would also be the reason why "F" type connectors have such wide
spread ability on the female center conductor grasping tines.
RG-6 center wires are a lot bigger than an RG-174. An RG-174 "F"
type connector, however is one of the few that do NOT use the center
wire as the "stinger", they have solder cups and hard mounted center
pins. A much more expensive termination.
You caught me with my QA reviews of my posts down. :-]