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Re: Some P4 moon landing ideas :-)



How many degrees would the libration of the moon swing the moon based
antenna as seen from the moon?  Would this cause it to steer far enough off
the earth to be a problem?

"Reicher, James" wrote:
> 
> The high gain antenna wouldn't need any steering to look back at Earth, once
> it was set.  The Moon is in a tidal lock with Earth and is ALWAYS showing
> the same side to us.  Aiming a gain antenna to lock in would be relatively
> easy since once the aim is set, you'd never have to move it again!
> 
> You could do aim your Earth-based antenna with a sighting scope and merely
> adjust manually over time as the Moon travelled overhead.
> 
> -----Original Message-----
> From: Edward R. Cole [mailto:al7eb@ptialaska.net]
> Sent: Monday, July 01, 2002 4:00 PM
> To: amsat-bb@AMSAT.Org
> Subject: RE: [amsat-bb] Some P4 moon landing ideas :-)
> 
> >I'd like to see a concept in which a lunar-based relay would be more
> >advantageous than a satellite.  The Moon is about 8 times further away than
> >AO-40 at apogee (~18 dB more path loss).
> >
> >Ken Ernandes, N2WWD
> 
> Yep!  And the high gain antenna will need precise stearing to stay looking
> at the Earth.  I more probable project might be just a lunar-based
> repeater...for use by the Astronauts to talk back to Lunar Base One from
> their rover!  No particular advantage for Earth-based hams, though!
> 
> Ed, AL7EB
> 
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-- 
73, Roy -- W0SL

E-Mail: rdwelch@swbell.net
Home Page: http://home.swbell.net/rdwelch
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