Measurement check of the dish antenna

On Sunday October 2, 2022 Ray Uberecken, Dan Layne and Gary Agranat climbed on to the 60-foot dish antenna to measure the dish diameter, the distance from the dish center to the feed, and the bore alignment. This verified the original geometry specifications continue to be valid to at least within a quarter of an inch.

The original plan for the day was to also install the 1296 MHz feed at the focus, for the upcoming ARRL EME contest. However, the wind gusts increased, as was anticipated from the forecast. The feed changeout was therefore postponed.

Measuring the first leg of the distance from the dish center to height of the edge, using the tape measure suspended from the dish edges.
Ray securing the tape measure to measure the dish diameter.
Dan measuring the dish diameter at the opposite edge.
Antenna focus
Securing the ladder
Scattered rain shafts started to pass during the afternoon.

Photos by Gary Agranat