Below is the Pin Out for the 8 pin mic connector on the Powertalk model radios:
1. Mic audio input
2. PTT
3. 5V bias for carbon mic
4. Freq/Chan Step
5. N/C
6. Headphone audio out
7. Audio ground
8. Digital ground
SGC Inc., Tel:
425-746-6310 Fax: 425-746-6384
Email: sgc@sgcworld.comSGC reserves the right to change specifications, release dates and price without notice.