[Elecraft] What size DC Power Plug for K1

[K. Rice]

> My K1 did not come with the original DC Power Plug.  I see in the
> parts list that J4 is 2.1mm in size.  The local Radio Shack has two
> with an ID of 2.1mm - one they call a Size M and the other is a Size
> K.
> 
> Anyone have a clue as to which would be the better gamble to try so I
> don't have to buy both?
 
My K1 came with a 5.5 OD x 2.1 ID plug.

That maps to a Radio Shack type M Adaptaplug, if I'm not mistaken.

BTW, there is enough slop in the (5.0,5.5) x (2.1,2.5) plugs and jacks
such that various loose or tight misfittings can be made to work
depending on manufacturere's tolerances.

In any case, a type M gives a good fit. 

HTH and 73,

Ken
K3VV
Coopersburg, PA