The effectiveness of parabolic antennas also depends on the accuracy of the surface of the dish and the correct placement of the irradiator in the focal point. On sunny days, a simple test is offered and it is best not to talk about it, but to watch it in the following video:
Measure the efficiency of a dish. This is a small dish with a real spot in the focus point. Spot is only 1 small square.#Ham radio #hammer #antenna #dish #QO100 #AMSAT @qo100_sat #satellite #Efficiency pic.Twitter.com/1LQ9iExIRc
— PE1RDP (@PE1RDP) February 26, 2021