Working well on New Anytone AT-6666 Pro and New President Washington Radios.

Use your 4 Pin Cobra Microphone on a 6 Pin Delta Force Radio with this adapter

I did test on a President Lincoln 2+ with an Astatic 878DM desk microphone and no issues were found when using this adapter cable. No channel changing was present while transmitting on a Lincoln 2+ radio.

Can't guarantee it will work on all President 6-Pin radios with a different brand of microphone.

Make sure your microphone is wired for the standard Cobra 4-Pin style.

It's recommended to not have the RX line connected on the 4-pin plug.