[amsat-bb] Re: NASA's American Student Moon Orbiter...
vk3jed at gmail.com
Wed Jul 2 21:57:31 PDT 2008
At 12:42 PM 7/3/2008, Anthony Monteiro wrote:
>Antenna gain is proportional to area (ignoring efficiency)
>so to get 40 times the gain you would need a little more than
>6 times the diameter for a dish antenna. So, if you could receive AO-40
>on 2.4GHz with a 1 meter dish, you would need something around
>a 6 meter diameter dish to receive AO-40 if it were on the moon.
But if, instead of SSB, you used a mode which was able to cope with a
16dB weaker signal (plenty of weak signal data modes to choose from),
then the 1m dish would work.
73 de VK3JED
More information about the AMSAT-BB