"Harold E. Johnson" wrote in message news:...
Does anyone know why the efficiency of the Stanford Big Dish (150 feet)
is only 35% on 1420MHz, compared to 55% on 150 and 400MHz?
http://www-star.stanford.edu/rsg/bigdish.php
--Zack Lau W1VT
More than likely, mesh in the reflector is too big and parabolic
perfection is poorer at the higher frequency
W4ZCB