SETI public: Antenna and amplifiers

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From: william edmondson (w.h.edmondson_at_cs.bham.ac.uk)
Date: Tue Mar 18 2003 - 06:46:22 PST

  • Next message: LARRY KLAES: "SETI public: Fw: Space-Weather-Outlook"

    Hi Folks.

    There is a possibility that I might be able to convince people in my
    university that I could use a spare radio dish currently sitting idle on
    the roof of our Electrical Engineering building.

    It is old, and still reasonably mobile, but needs major refurbishment.
     I haven't been up to look it over - I'd guess it's about 12'.

    So, in order to convince a few folk.... I have some questions about
    likely considerations....

    1/ Polarization - what do folk use/assume in relation to polarized
    signals, waveguides, etc.?

    2/ I want to be sure that if I detect a null it is not because of noise
    in the amps. So, what sort of performance is possible with low noise
    amps, and how does this relate to cosmic background. In short - how
    easy is it to tell that a null result is really a null result?

    What sort of beam widths (or dish diameters...) do people consider a)
    hopeless (broad beam/small dish), b) optimal?
    and why?
    and how does this consideration relate to amplifier properties and the
    null result?

    Cheers

    William

  • Next message: LARRY KLAES: "SETI public: Fw: Space-Weather-Outlook"
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