[Elecraft] [K3] Modular Jack?

[Eric Swartz - WA6HHQ, Elecraft]

Hi John,

This is a programming jack used only in our K3 production and test. It 
currently does not have another use.

73, Eric  WA6HHQ
Elecraft


John Frerichs wrote:
> I've just finished assembling my K3 and cannot find any reference as to the purpose for the modular jack at the bottom, front, right part of the radio.  I've searched on-line and through the message archives, as well as scanned through the Owner's Manual PDF for the key words "modular" and "jack" to no avail.  I see it in the Operating Manual (p76) and several places in the Assembly Manual, but don't see any reference to it.
>  
> What is the purpose of this jack?
>  
> Thanks,
>  
> -- John, N6VCW
>