What size DC Power Plug for K1

[JT Croteau-2]

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?

Thanks

72 de JT, W6FO
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[n6wg]

The K1 is small enough you can take it to the
store to try them both.
Good luck and 73
Bob N6WG

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]]On Behalf Of JT Croteau
Sent: Wednesday, May 24, 2006 2:15 PM
To: [hidden email]
Subject: [Elecraft] What size DC Power Plug for K1


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?

Thanks

72 de JT, W6FO
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[JT Croteau-2]

On 5/24/06, Robert Tellefsen <[hidden email]> wrote:
> The K1 is small enough you can take it to the
> store to try them both.

I'll just order one from Elecraft.  Tom Hammond says to avoid the RS
ones as they have the hot (inner) contact extending out just barely
past the end of the insulation, so it can readily short out against
anything grounded.  I'll listen to N0SS on this one.  I think I'll
order the upgrade kit for my K1 and possibly the new firmware for the
KAT1 anyway.

Thanks for all the replies.

- JT
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[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

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