[amsat-bb] FW: Re: The Moon is our Future

Dave dave at mynatt.biz
Thu Jul 2 20:06:53 PDT 2009

Could the antenna be a launched in the craft as piece of small, folded
reflective plastic that when activated by gas or ??, expands to a dish
shape, and becomes a super large plastic large dish? The dish  then could be
any size we wanted it to be and not be a hindrance to the launch craft size.
I've seen these but have trouble no putting my finger on the name. We could
make the dish 30ft around and folded it could be 4 inches square.

DM78qd // KA0SWT
If it weren't for Philo T. Farnsworth, inventor of television, we'd still be
eating frozen radio dinners.-- Johnny Carson

-----Original Message-----
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
Behalf Of Tony Langdon
Sent: Thursday, July 02, 2009 7:07 PM
To: James French; AMSAT-BB
Subject: [amsat-bb] Re: The Moon is our Future

At 02:30 AM 7/3/2009, James French wrote:

>Why not use a L/s, U/L. or a U/s transponder for this?
>Why limit ourselves to V/u for everything?
>Aren't we supposed to 'experiment' with the higher frequencies we have 

I agree.  I believe the Moon is a job for the microwave bands.  Antenna gain
on both ends is easier to produce (for a fixed dish/array, the Moon end will
be gain limited by the need to have the beam cover for the varying position
of the Earth due to libration).

Comeing up with a method to align the antenna initially will be an
interesting challenge.  That will have to be automated, even if it's a one
off process.

73 de VK3JED / VK3IRL

Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

More information about the AMSAT-BB mailing list