-----Original Message----- From: EA2IG Hi Pete. Loock at the following WEB site, and under RA-17L, you will found a schematic for an adaptor for use the RA117 with a RA-66. Pedro EA2IG ***Pedro,the schematic you refer to is for the MA251 which is only applicable to the RA17 series of receivers,not the RA117!! Brian Goldsmith.