[NLRS] Bad BNC Jacks???

[Phil Hejtmanek]

You can easily tell the difference between 50 and 75 ohm BNC's  The 50 ohm version (most common) has a small plastic socket around the center pin on the female and a corresponding piece on the male.  A 75 ohm BNC has no plastic insert; just a male or female center pin, depending on the gender of the connector.

And yes, the pins are different diameters.

73,

Phil  kf9us 


--- On Fri, 1/2/09, Scott <acepilot at bloomer.net> wrote:

> From: Scott <acepilot at bloomer.net>
> Subject: [NLRS] Bad BNC Jacks???
> To: "NLRS List" <nlrs at mailman.qth.net>, "Chippewa Valley VHF" <cvvhf at cvvhf.org>
> Date: Friday, January 2, 2009, 6:26 AM
> It appears I've been bitten by another bad BNC jack. 
> This time on my W1GHZ 222 transverter.  It exhibits the same
> problem as the one I replaced on my DEMI 10 GHz unit.  If I
> wiggle the coax connector body side to side, the transverter
> output power drops to a low level.  This makes me think
> there is some issue making contact between center pins.  Are
> the center pin diameters different size between 50 ohm and
> 75 ohm connectors?  I would suspect they would be.  I am
> about ready to give up on BNC connctors.  I suppose N
> connectors would be the logical choice?  Anybody else run
> into this problem?  Input?
> 
> -- Scott N0EDV
> http://corbenflyer.tripod.com/
> Flying Corben Junior Ace - Building RV-4
> Gotta Fly or Gonna Die
> 
> 
> _______________________________________________
> NLRS mailing list
> NLRS at mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/nlrs