Hi Richard. Thank you for the answers
Richard Clark ha scritto:
That is plenty of money. Do you have any time constraints?

Yep. I can only use Sundays... But on the other side I have no deadline.

We have a contributor who has been teaching that for 40 years at a
major university, and he studied under the pioneers of that specialty.
Search groups.google.com for posts by "Mac N8TT" or use "J.
McLaughlin; Michigan, USA" as search terms.

Great! I'll surely look for his messages!

Many thanks again.

Greetings,

Emanuele Colucci

On Apr 13, 2:08*am, Emanuele Colucci wrote:



Greetings,

Emanuele Colucci


W1GHZ has a website on amateur microwave stuff that might be useful
(construction practices, etc.)

If you have access to a university library or online equivalent, there
was a set of articles in the IEEE Antennas and Propagation Magazine
(not the transactions on A&P) a few years back covering design of
various reflector antennas.

The Cassegrain is popular for the reasons you give: low noise from
behind the antenna, especially if the secondary reflector is
underilluminated. And, it lets you put the electronics right at the
feed without having to worry about putting them out at the prime
focus.

You might also look at the Gregorian or Dragonian configurations,
which are offset feed schemes. The Allen Telescope Array is using a
form of Gregorian.

After that, it's mostly a matter of paper and pencil and working out
the curvatures. The biggest challenge is in figuring out what the
effect of your construction tolerances is.