FS New Icom OPC-599 Accessory Cable
 

The ICOM OPC-599 Accessory Jack Conversion Cable allows for easy connection
of your ICOM 706 to external devices such amplifiers.
It is a 7 and 8 Pin to 13 Pin Adaptor Cable for the 703. 706, 718, and
IC-78.
Retail is $60. This one is new in the sealed package and is priced at $35.
Thanks,Charlie Hugg, K5MBX