For those of you who wish to assemble your own interface cable, schematics for the most popular transceivers are listed below.  Click on your transceiver brand once the page has loaded.

DISCLAIMER:  The schematic diagrams presented below are from public sources.  In all cases  be absolutely sure to verify all connections with the manual supplied with your transceiver.  Albeit we check as far as possible, we assume no liability as to the accuracy of any schematics listed below which are also used as the basis for the cables we supply.