Palcom GS4 satellite positioner; Computer Controlled Antena Positioner, Serial Number B019146H. This deluxe motorised satellite system cost £980 including the 90cm dish. A positioner was usually an afterthought for those who bought a satellite receiver. It corrected for small positional errors of the dish, adjusted dish position in accordance withsignal strength, and compensated for satellittes which were lose together. Palcom GS4 satellite positioner, 1993 1993