The CB and microphone are too far from the desk, causing a great deal of inconvenience. I would like to create a splitter for the microphone so that I can use two(2) microphones, the CB and original, hand-held microphone would remain where they are and the new microphone, an A-Static desk-top model would have a longer cord and be placed on the desk.

Ideally, the PTT button on the desk-top microphone should render the hand-held microphone temporarily disabled so that there would only be one microphone able to transmit at a time. Is this possible?

The existing system consists of a Cobra Vehicle (I have several) CB with a four(4) pin hand-held microphone. The A-Static desk-top microphone is also a four(4) and does work properly on the CB.

Would you have any suggestions on how to properly wire such a microphone splitter configuration?

Any help would be greatly appreciated.

BTW, I have reasonable degree on knowledge on basic DC electricity.
I also have all the parts and tools I need, since I started to work on this about 2-3 years ago.
Ie, multi-meter, soldering iron, female four (4) pin connectors, project box, spare wires and spare CBs and micorphones for testing at home, first.

Thanks much!

Andy