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Re: NASA's American Student Moon Orbiter...



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
http://vkradio.com

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