[CQ-Contest] Prosistel PST 71 help please

[timonkruijer at gmail.com]

Hi all,

 

One of my old model PST 71 Prosistel rotators (sold early in the USA as Big
Boy rotators) has a problem with the gearbox between the 48v motor and the
rotor itself.

Prosistel Italy does not have any information about this old model any more.

I know it is  Brown - PMZ gearbox. Does anyone has more information? Type of
gear how many reduction? 

The is no plate with text on it anymore.

 

73 Timon PA1T