[eagle] Re: [Advisors] A new opportunity (Phase 4 lite?)

Juan Rivera juan-rivera at sbcglobal.net
Wed Jul 18 10:17:46 PDT 2007


I've attached a clip of an NTIA frequency allocation chart showing the band
segments in question.  I've added arrows at the bottom showing the frequency
range of typical COTS C-Band LNAs and SSPAs.

73, Juan

On 7/17/07, RaySoifer at cs.com <RaySoifer at cs.com> wrote:
> In a message dated 7/17/2007 2:53:03 PM Pacific Daylight Time,
> rwmcgwier at gmail.com writes:
>   This raises a serious problem as Region
> 1 does not permit us to radiate signals from the satellite in the
> 3400-3410 MHz band if they can see it.
> Bob et al,
> This might overstate the problem just a bit.  The ITU RR allow any country
> to put any station on any frequency, as long as no harmful interference is
> caused to stations operating in accordance with the Table of Frequency
> Allocations.  So, depending upon the orbital station(s), it may be possible
> for us to design an antenna whose footprint would result in a PFD low enough
> in the Region 1 land mass so as not to cause harmful interference there.
> One more design issue for the engineering team....
> 73,
> Ray
> _______________________________________________
> Via the Eagle mailing list courtesy of AMSAT-NA
> Eagle at amsat.org
> http://amsat.org/mailman/listinfo/eagle
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