Wiring Frequency Chart CB & Ham Lingo Modification List Manuals (Located to the LEFT of the Copper Forum here. The people are taking back the power, when the people no longer listen to the President is that person the The UHF390 removes the need for a head unit, with all of the radio’s controls in the microphone. Rotary switch and Up/down channel selector. Take that wire and solder it to GROUND on the PCB. Most 4 pin Astatic mic's, the audio shield (-) and blue wire (switching ground) are together as they are both grounds, the white mic is always the audio (+), red is the transmit (PTT) and black is the receive. MICROPHONE WIRING: Pin 1 Modulation Up for sale we have a refurbished President Lincoln 2 plus 10 m radio. (You save ) SKU: PRES-LINII-Plus-Prog-CBL. De President Lincoln II Plus heeft een 3 kleuren display ( oranje, groen en blauw ) die zelf instelbaar is. Open the Mic and remove the ground from the Up and Down Switches and connect the common of the switches to the TX lead. President lincoln 2 plus mic wiring Tel: 01908 597676.