Bob - What does this correlate to in NF? e
Wayne Burdick wrote: > I just measured the MDS of a production K144XV: -145 dBm. This is > with the module installed in a K3. It'll probably vary slightly from > one unit to the next. > > 73, > Wayne > > ---- > http://www.elecraft.com > > On Jan 8, 2010, at 2:44 AM, "Geoffrey Mackenzie-Kennedy" > <gm4...@btinternet.com > > wrote: > > >> David, >> >> Wayne said: "It's actually more like -144 dBm (500-Hz bandwidth)." >> I assume >> that this refers to a K144XV installed in a K3. >> >> This equates to a noise figure of 3db. >> >> To achieve a lower noise figure, the gain used in the K144XV would >> have to >> be greater, which would further reduce the overall dynamic range >> (IMDDR3) of >> the K3 assembly on 2m. >> >> 73, >> Geoff >> GM4ESD >> >> >> David Pratt wrote on Friday, January 08, 2010 at 9:34 AM >> >> >>> In a recent message, AD6XY <m.j.wil...@rl.ac.uk> wrote ... >>> >>>> I can not see any reference to noise figure in the brochure. Just >>>> MDS and >>>> FM >>>> sensitivity with no bandwidth. >>>> >>> The manual gives this as "1dB nominal". >>> >>> See >>> http://www.elecraft.com/manual/K144XV%20Manual%20A3.pdf >>> >>> 73 >>> -- >>> David G4DMP/G3KEP >>> Leeds, UK >>> >> ______________________________________________________________ >> 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 >> > ______________________________________________________________ > 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 > ______________________________________________________________ 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
