kb8tq@n1k.org said: > the signal shows up over many 10’s of KHz of bandwidth each side of 100 > KHz. What does the spectrum look like? Is that even a reasonable question for that sort of signal? How well do typical old/analog spectrum analyzers work on that sort of signal? (as compared to modern digital/FFT versions) How many samples do you need to get the full picture with a FFT? -- These are my opinions. I hate spam.

-------- In message <20170203214011.76E59406061@ip-64-139-1-69.sjc.megapath.net>, Hal Murray writes: >What does the spectrum look like? Is that even a reasonable question for >that sort of signal? Look here for some background: http://phk.freebsd.dk/loran-c In particular: http://phk.freebsd.dk/loran-c/theoretical_spectrum/ Newer stuff here: http://phk.freebsd.dk/AducLoran/ -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.

Hi The spectrum is about what you would expect from a bunch of short pulses. http://phk.freebsd.dk/loran-c/theoretical_spectrum/ Bob > On Feb 3, 2017, at 4:40 PM, Hal Murray <hmurray@megapathdsl.net> wrote: > > > kb8tq@n1k.org said: >> the signal shows up over many 10’s of KHz of bandwidth each side of 100 >> KHz. > > What does the spectrum look like? Is that even a reasonable question for > that sort of signal? > > How well do typical old/analog spectrum analyzers work on that sort of > signal? (as compared to modern digital/FFT versions) > > How many samples do you need to get the full picture with a FFT? > > -- > These are my opinions. I hate spam. > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.