[Elecraft] K2 and Signalink USB Setup

[Don Wilhelm]

Aaron,

Unless you have done some sort of mod to that K2, you do NOT have 
speaker audio at pin 6 of the mic jack.
The audio is on the Control Board and RF Board, but NOT the Front Panel 
board.

The schematic of the Kenwood MC-43S microphone from G4WPW (SK) shows no 
speaker function and no connection to pin 6.

73,
Don W3FPR

On 8/5/2021 10:50 AM, Aaron K5ATG wrote:
> I have been using a Signalink USB with my K2 and the last time I
> hooked the SignaLink to the K2 there was a real bad feedback sound
> every time the rig went into transmit. It received just fine. So I
> contacted Tigertronics and started a dialog with them and it turns out
> I could have been setting up the Signalink wrong. Here is the setup, I
> have my K2 wired to use a Kenwood MC-43S microphone. When I bought the
> Signalink for the K2 they sent me the microphone cable and an Audio
> cable. As per the instructions that I received from Tigertronics I am
> to use the 8 pin microphone cable to connect from the K2 to the
> Signalink. Then I have to connect the audio cable from the Ext Speaker
> jack on the back of the K2 to the SPKR jack on the back of the
> SignaLink. Then the USB from the SignaLink to the computer. Now
> Tigertronics are saying that I do not need the audio cable. In the
> dialog they asked what microphone I am using what it the pinout for
> that microphone:
> Pin1 Mic Input
> Pin 2 PTT
> Pin 3 N/C
> Pin 4 N/C
> Pin 5 8 VDC **
> Pin 6 Speaker **
> Pin 7 Mic GND
> Pin 8 GND
>
> ** Speaker audio and power are available on some models.
>
> Tigertronics is now asking for certain if I have Audio on Pin 6. Is
> there a way for me to check this without having to take the K2 apart?