[Elecraft] K2 MH2 P1 jumper wiring w/5.6k resistor

[Don Wilhelm]

Gene,

It is not clear, so I am going to make an assumption (you know what that 
means) that pins 1. 2, 7 and 8 are jumpered straight across the mic 
configuration header - AF to pin 1, PTT to pin 2, GND to pin 7 and GND 
to pin 8.  If that is true, all you need to add is a jumper from 5V to 
pin 6 AND a 5.5k resistor between pins 6 and 1 on the back of the 
microphone jack.

Yes, there are other pins that could be connected - UP, DN, FUNC, but 
there are no corresponding buttons on the MH2, so don;t bother 
connecting them.

The relevant information is in the KSB2 manual which you can download 
from the Elecraft website.  If you do not have the paper manuals, I 
suggest that you download the manual for the K2 and the instructions for 
all your installed options.  Read through the alignment and operational 
parts of each of them to familiarize yourself with your new K2.

73,
Don W3FPR

On 3/3/2012 10:03 PM, Gene N4FZ wrote:
> I just bought a used K2 that needs to be wired for the Elecraft MH2 mic.
> Question: Do ALL the jumpers have to be soldered directly across, as per
> instructions with the mic? The P1 strip looks different, (has exposed long
> pins, that have pins 1, 2, 7, 8 jumpered and soldered), than the 2008
> instruction sheet. It looks like pins 3,4,5 are unused. Any help is very
> much appreciated! Gene
>
>