As a side note I removed the RCS-4 this morning and jumpered the LPDA and took it apart. It is an OLD Ameritron unit and has only 2 DPDT relays in it. It is not like the newer MFJ units which have three SPDT relays. Does anyone have a copy of the manual or a schematic for this unit? -- *Clint Talmadge* - W5CPT -