I picked up Sonar Model FR-105 and a Heath Model GR-110 at the Benson Hamfest. Want to try and clean them up and get them working again. Anyone got any service information on them? I know the Sonar uses 10.245 IF and pretty sure the Heath uses 10.7 or "type 1" crystals. Also the Sonar has a round tube like power connector on the rear. From what i have read that is an early model. Any help thanks in advance.