Prositel is a rotator family which fits very well for remote control. The connection is very simple a cable from the PC to the Control-RRC and one cable from the Radio-RRC to the Rotator control box. Cable drawings is available here=>
In RRC1258-MkII both COM 1 and COM 2 can be used depending on which is free. In RRC-1258 only COM 1 can be used.