[Elecraft] Powerpole police here....

[Dennis Griffin]

That is my recollection as well. The standard was 1/8" for a long time, originally as a mono connector, until many personal electronics products manufactured outside of the USA started showing up with 3.5mm plugs & jacks. Had they wanted to adopt the existing standard but use metric naming, it could have been called 3 mm (.118"). I just mic'd a plug on a B&O (Danish company) earphone set at .1377" (3.5 mm x .03934 = .13769").

73 de Dennis KD7CAC
Scottsdale, AZ

On Mar 17, 2014, at 4:22 AM, Gerry leary <gerryleary99 at icloud.com> wrote:

> 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