[Elecraft] Powerpole police here....

[Gerry leary]

Some of the old one eighth inch plugs out of the 60s will not make contact in the newer jacks. These are the two conductor type. So I think that years ago a 1/8 plug was really a 1/8 plug.

Sent from my iPhone this time 

> On Mar 16, 2014, at 12:07 AM, Mark Petiford <rv6amark at yahoo.com> wrote:
> 
> Re:  "Are they REALLY   0.137795 inches or is 3.5mm just a rounded off way to describe the same physical part using two 
> different measurement standards?"
> 
> Charlie,
> 
> Not sure you are going to get a real definitive answer, but I now believe the 1/8" designation is just a rounded off way to describe a 3.5mm connector.  I didn't believe that before this thread got going.
> 
> I dug out all the old connectors I could find from the very bottom of my junk box and measured them.  All of them measured 3.5mm (0.138") as best I could read on my calipers.  None were below 0.137.  I thought for sure I would find some that were 1/8" (0.125") dia., because I remember buying some of them from the local "exploded television" store that were marked as 1/8" phone plugs.  I think those were all mono, not stereo.  In those days, I didn't have a set of calipers or a micrometer to check them, so I just assumed they were 0.125" dia.  Looks like that assumption was wrong.
> 
> Whoever wrote the Wikipedia entry on "3.5mm Plug" agrees that 1/8" is just an approximate description used in some countries, and that they actually measure 3.5mm (0.138") diameter, which agrees with my junk box.  I also did a search of Mouser looking for 1/8" Plugs, and all I came up with was 3.5mm plugs.
> 
> My memory still recalls seeing connectors that wouldn't quite fit together correctly, but I don't have any that I can find now...and I have some pretty old junk.  Just ask my wife!  ;-)
>         
> 73
> Mark
> KE6BB
> 
> From: Charlie T, K3ICH<pincon at erols.com>
> Sent: ‎Sat, ‎Mar‎ ‎15‎, ‎2014 at ‎09‎:‎35‎ ‎PM
> To:  <elecraft at mailman.qth.net>
> Subject: Re: [Elecraft] Powerpole police here....
> 
> That doesn't answer my question..... Are they REALLY   0.137795 inches or is 
> 3.5mm just a rounded off way to describe the same physical part using two 
> different measurement standards?
> 
> 73, Charlie k3ICH
> 
> 
> l
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