[NLRS] Elevation rotators for small stuff

[Doug Reed]

I'd say that having the dish mounted to a car or truck but without any
sort of bracing against ground will mean the dish changes elevation
every time you move around in the vehicle. That was one reason I
wanted a motorized elevation control, to keep the dish on the horizon
as I moved or the dish turned. With a vehicle mounted dish, I assume
the platform will NEVER be level and every adjustment of azimuth will
also require an elevation adjustment.

With a remote mounted inclinometer on the dish, a computer program can
adjust the dish as azimuth changes, or when I get in or out of the
car.... I can buy one of those for $20 or less with careful shopping.
I haven't yet looked for a remote electronic compass that has 1 degree
resolution.... I'm not worried about magnetic declination since the
computer program can  always adjust for that.

With something small like a Raspberry Pi or Aduino kit, a lot of the
positioning could be done at the dish. But it might be easier to read
the sensors and drive the positioners directly from a laptop in the
car.

I considered a lazy susan bearing race before but was unsure how
stable and sturdy they would be since it really must not tip and tilt
in the wind. Maybe it could be made useful for rough aiming if you add
multiple clamps to hold it tight when pointed in the general
direction. I think Bob W0AUS tried something like the lazy susan many
years ago and dropped it. It would be a lot easier to mount the dish
on a pipe attached to a U100 rotor, if it has low enough backlash....

73, Doug Reed, N0NAS.