Re: [Advisors] A new opportunity (Phase 4 lite?)
In a message dated 7/17/2007 2:53:03 PM Pacific Daylight Time, rwmcgwier@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
All,
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@cs.com RaySoifer@cs.com wrote:
In a message dated 7/17/2007 2:53:03 PM Pacific Daylight Time, rwmcgwier@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@amsat.org http://amsat.org/mailman/listinfo/eagle
participants (2)
-
Juan Rivera -
RaySoifer＠cs.com