[Moon-net] 5500 ROTATORS FOR EME ELEVATION

[Darrell]

Hi Folks;
I use the same procedure as John and consider it an absolute 
MUST....unless U have it under a Dome, hi.  Mine is the G5600B but in 
all respects not Heavy Duty as I would have expected......in fact not 
sure not even sure where the difference is except a BIT SLOWER which 
only means another Gear Internal.

Deficiently recommend John's approach.

Regards & GL, Darrell


>I mount the crossboom on the azimuth mast through a sleeve bearing 3 feet
>long.  On the other side of the mast I mount the rotator with rotating
>center pipe parallel  to the boom.  In my case the boom is 2.5 inches in
>diameter and the pipe in the rotator is 1.25 inches.  Levers on each side of
>the rotator are mounted on both the boom and on pipe in the rotator.  The
>levers have a 2 to 1 ratio.  In my case 4 inch levers on the rotator and 8
>inch levers on the boom.  Equal length arms connect the levers on each side.
>The antenna now moves at half the speed and half the effort.  When the
>elevation indicator reads 100 degrees, for instance, the array is at 50
>degrees elevation.  It now moves slowly enough that there is little bounce
>when the rotator stops and starts.  Also the weight and twisting torque of
>the array is on the much stronger bearing and not the rotator.
>
>This system has worked well for the last 2+ years.  Of course my antenna is
>less that 20 feet to the top antennas and it is tied down when not in use.
>If any one would like pictures look at W8PAT on QRZ or email and I can email
>some closeups.
>
>73 and GL
>John W8PAT
>EN81vg
>
>
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