Our altimeter transmitter was stuck. We opened it up, cleaned the gears and oiled the bearings with synthetic clock oil. The Telegon transmitter motor is magnetically coupled to the gear box. Each side has a tiny Y-shaped magnet; the driving and receiving magnet are spaced about 050” apart as they spin. It’s hard to see in the picture; but the North side of the magnet is marked with a faded red stain. Details are shown in the “Altimeter transmitter” section of “Restoration hints”.
