[amsat-bb] Pendulum type elevation measurement

Richard Ferryman g4bbh at btinternet.com
Sun Feb 24 03:45:44 PST 2013

For some time I have wanted a more accurate antenna elevation measurement system.  Shaft encoders are beyond my budget.  It seems sensible to use a pendulum operated system.  Digging through my 'junk' box I find I have a new Spectrol  precision potentiometer still sealed in it's package.  This pot is 21mm diameter, has a servo type mount,, ball race bearing, 340 degree track (continuous rotation possible)  and specification is 0.5% linearity.and is very low torque.   Does anyone know if there are any drawbacks to using this method of position measurement.
73 de Dick G4BBH

More information about the AMSAT-BB mailing list