[Elecraft] K-2 5 volts on Mic Jack

[Bill Coleman]

On Mar 18, 2005, at 11:46 AM, Jack Brindle wrote:

> Don and I have extensively discussed the use of the microphone 5 volt 
> line. I fully agree with his strong suggestion to not use it. In my 
> case I found problems with RF Feedback that I have been able to 
> directly associate with my use of the power pin, even though I heavily 
> bypassed it in my interface box.

I solved this problem.

Instead of +5, I wired a jumper block to a piece of wire, ran it to the 
+8 regulator on the RF board, ran the wire up beside the connector and 
pushed the jumper wire on the microphone half of the connection. I 
already had several accessories wired for a Kenwood TS-430S, which uses 
+8 volts as well. Now the accessories work equally well on either 
radio.

Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at arrl.net
Quote: "Not within a thousand years will man ever fly!"
             -- Wilbur Wright, 1901