Experiments with WWVB

Jun 23, 2013 4 Replies

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-- Many thanks,



Don Lancaster voice phone: (928)428-4073 Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552 rss:

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email: snipped-for-privacy@tinaja.com



Please visit my GURU's LAIR web site at

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The La Crosse I have

Picks up WWVB quite often. Even tho its in a brick building/metal roof and Mylar reflective coatings on the windows. My phone doesnt even get a signal. You need to set the time initially because it does check to sync to WWVB around midnight.

Plus the girl strips down to a bikini around 78 degrees ;)D

Cheers

I used what you call the "traditional loop antenna", instead of ferrites. I found that unshielded antennas have no rejection of the E-field crap from fluorescent lighting.

Plus synchronous demodulation derived from a PLL makes all the difference in the world. ...Jim Thompson

| James E.Thompson | mens | | Analog Innovations | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | San Tan Valley, AZ 85142 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

Will it work with the new WWVB format?

"In the second of the two formats, based on PM, which has been in use since October 29, 2012, binary-phase-shift-keying (BPSK) modulation is used, wherein the carrier's phase is unaffected when conveying a "0", and is inverted (i.e. 180-degree shifted) when conveying "1". This time code, also operating at a rate of 1 bit/sec, is delayed by 0.1s with respect to the first time code described above, such that 180-degree transitions in the carrier phase can only occur 0.1s after the 17dB power reduction that is created by the pulse-width-modulation. The data content, physical properties and scheduling features of this BPSK time code may be found here:

Enhanced WWVB Broadcast Format "

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