Tim, Tnx. I really appreciate the assistance. Now I can finish the interface. Wasted more time looking for the manual than it took to get an answer from you guys. Chas At 10:05 AM 11/2/2004, you wrote: >1 White-Audio in >2 Shield-common ground >3 Black-PTT >4 Yellow-Audio Out >5 Red-Spare > >73 >Tim W3ZVT