I doubt that a 'fractal antenna' is going to do very well at 60 kHz in a size small enough to fit in a wrist watch.
YMMV, -John ================== > Google 'fractal antenna'. Fractal Antennas are a relatively recent (late > 1980's to mid-1990's) discovery/invention. I have read that they are > approximately 20% more efficient than normal antennas. > > Jim, KG4FXV > > >>________________________________ >> From: d0ct0r <t...@patoka.org> >>To: Discussion of precise time and frequency measurement >> <time-nuts@febo.com> >>Sent: Saturday, February 22, 2014 12:54 AM >>Subject: Re: [time-nuts] WWVB antennas >> >> >>I am impressed by Casio engineers who created tiny antenna for my wrist >> watch. I don't know how, but that Pathfinder able to catch and decode 60 >> khz wwvb in noisy city environment. And it did even better when i was 500 >> km north ! >> >>:40, Alexander Pummer wrote: >>> here are the other 60kHz transmitters: >>> http://www.ka7oei.com/wwvb_antenna.html >>> >>> U.S. based WWVB transmitter. As described, it >>> could also be used for theUK-based 60 kHz MSF >>> <http://en.wikipedia.org/wiki/Time_from_NPL> MSF signal formerly >>> the Rugby clock* *and the >>> Japanese 60 kHz JJY <http://en.wikipedia.org/wiki/JJY>_ >>> _our fiend in Australia most likely*_ _*receive the "JapaneseWWVB" >>> 73 >>> KJ6HUN >>> Alex >>> _*//*_ >>> >>> >>> >>> >>> >>> >>> On 2/21/2014 12:21 PM, Robert Roehrig wrote: >>>> John Forster said: >>>> >>>> "WWVB is hard to detect w/ a 3-foot diameter HP shielded loop w/ >>>> integral >>>> preamp & 2 stages of mechanical filters. (HP 117A). The other half of >>>> the >>>> time it was undetectable. Paul S uses a loop that is much larger." >>>> >>>> I am near Chicago and I have 2 60 kHz antennas. One is a ferrite >>>> rod type and the other a 5 foot diameter loop. Both are tuned >>>> and feed identical 2 transistor preamp. The loop does work better. >>>> _______________________________________________ >>>> 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. >>> >>> _______________________________________________ >>> 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. >> >>-- WBW, >> >>V.P. >>_______________________________________________ >>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. >> >> >> > _______________________________________________ > 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. > > _______________________________________________ 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.