[MLB-WIRELESS] Spectrum?

[Timshel Knoll]

On Fri, Jun 21, 2002 at 02:46:35AM +1000, Clae wrote:

[ ... ]

> also think about the aiming accuracy and beam tightness you'll need 
> over that distance...  if you want to keep 90% of the power you'll 
> need to hit your collecting dish damn accurately.  how many seconds 
> of arc does a 1m dish cover at 10km?

Just over 20 seconds. A theodolite will target to that kind of accuracy,
but you'd have trouble getting much else aligned that accurately, let
alone a large dish. Wind may also present problems for a large dish, and
with a 10" dish movement wiping out well over half your power, your
mounts would need to be bloody good ... :-)

Timshel

-- 
Timshel Knoll <timshel at pobox.com>, Debian email: <timshel at debian.org>
Debian GNU/Linux developer: http://people.debian.org/~timshel/
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