archive: Re: SETI frequencies in Contact

Re: SETI frequencies in Contact

Malcolm Mallette ( mallettem@tcon.net )
Tue, 01 Sep 1998 14:53:26 -0500

Corey Ashford wrote:
>
> 1420, and 1660 are in the L band (1000-2000 MHz)
> 4.45 is in the C band (4000-8000 MHz)
> 9.2 is in the X band (8000-12,500 MHz)
>
> The other bands:
>
> P 230-1000 MHz
> S 2000-4000 MHz
> Ku 12.5-18 GHz
> K 18-26.5 GHz
> Ka 26.5-40 GHz
> Millimeter > 40 GHz
>
> The book I'm referencing is a little old, so these
> designations may be somewhat out-of-date.
>
> In any case, they are just labels. There's nothing
> magical about any of the ranges, except of course
> the water hole, and pi * the hydroxyl freq, and um
> e * 1420 MHz, etc. *grin*
>
> ---Matthew G Cheung <mgcheung1@juno.com> wrote:
> >
> > >Actually, the frequency used in Contact was 4.45
> Ghz, or hydrogen times
> > pi.>
> > That's what it was in the movie, but in the book it
> was on many
> > frequencies, 1420 Mhz, 1660 Mhz, and 9.2 Ghz. The
> is around or on the
> > X-band, right?
> >
> > "The whole of science is nothing more than a
> refinement of everyday
> > thinking."
> >
>
> > ALBERT EINSTEIN
> >
> >
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The commercial C band for TVRO sats. is 3.7 to 4.2 GHz.