Well, at least they have big antennas. ;) I read the other day on the NOVA website that New Horizons will be downloading the data acquired in the flyby at a data rate of only 1 kb/s - think "1200 baud modem" for those of you old enough to remember them. And there was another fascinating article there about how they use Reed-Solomon error correcting codes to compensate for the inevitable bit errors and reduce the need for retransmission (and now using the same RS code for DNA data storage, very cool stuff.)
Nothing about the path loss, but knowing the data rate is so low, and that the RS code is probably good for a considerable error burst of several bits, that should at least give you a sense of what the loss might be! 73 jeff wk6i On Thu, Jul 16, 2015 at 11:10 AM, <a...@sbcglobal.net> wrote: > Heard last night on Nova program that the transmitter on the Pathfinder > Pluto probe was 10 watts. Anyone have a clue as to the signal path loss at > 3 billion miles and what levels the deep space dish receiving networks are > dealing with? Incredible that the data stream can be extracted from the > noise. > Mike AC5P > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wk6i.j...@gmail.com -- Jeff Stai ~ wk6i.j...@gmail.com Twisted Oak Winery ~ http://www.twistedoak.com/ Facebook ~ http://www.facebook.com/twistedoak ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
