I see no problems at all. I have done it with that method in the past.
The only thing I noticed that was a problem was if the pendulum is
exposed to the elements. As in weather not antenna elements. Gusty winds
would move the pendulum and cause a not steady reading..
but not that much of a problem did not happen all that often.
Joe WB9SBD
Sig
The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com
On 2/24/2013 5:45 AM, Richard Ferryman wrote:
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
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