In message <[email protected]>, Brooke Clarke writes: >On the PICLIST there has been a discussion about the CMAX WWVB front ends and >noise. Olin mentioned that you could use a dsPIC to look at the I and Q >signals resulting from mixing the WWVB signal with a carrier at 60 kHz. His >example case was to use a cheap crystal (+ or - 3 Hz) and so use a 10 Hz low >pass filter on the I and Q signals prior to squaring and adding them.
Don't bother with I & Q, put an ADC directly on your antenna and do it in software. See http://phk.freebsd.dk/AducLoran for inspiration. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
