I am not Eric, but the pins are 1, 2, 6, 8 and 9 - those all might have drivers in the amplifier.

I would suggest that you not break off the pins unless you have a cable with formed and sealed backshells. If you can open the backshell, just cut the wires on the 'backside' of the connector.

73,
Don W3FPR

On 12/15/2015 7:03 PM, [email protected] wrote:
One more question Eric.

If I need to block the TX lines from the amplifier to the K3, which pins
should I break off of the male DB-9 connector?

Thanks again for your help.

Charles K5UA

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