Topic 'Digital Clock Without Electricity or Moving Parts' in forum 'Gadgets' - dslreports.com http://www.dslreports.com/forum/Digital-Clock-Without-Electricity-or-Moving-Parts-27828842 en Fri, 24 May 2013 04:30:32 EDT Fri, 24 May 2013 04:30:32 EDT   http://www.dslreports.com/forum/nbsp-28178208
Only thing i dont like is ITS OFF FREQUENCY BY 1 (If a station is centered on 1.090Mhz it will show up @ 1.091 on this)]]> http://www.dslreports.com/forum/nbsp-28178208 Mon, 08 Apr 2013 02:59:59 EDT Re:   http://www.dslreports.com/forum/Re-nbsp-28176881 said by broccoli:

said by Trihexagonal:

Yes, it syncs with the shortwave radio time calibration signal from the atomic clock in Fort Collins, CO. every night, when the signal propagates best.

I am nitpicking, but WWVB carries the atomic time signal these timepieces sync to, on 60 kHz, which is longwave. You might be thinking of its sister stations WWV and WWVH, which indeed do broadcast on shortwave frequencies.

Nitpick away. :)

I referred to it as a shortwave radio signal, not to the frequency it was transmitted on. The Radio Shack DX-398 shortwave radio has what is considered to be a SW reception range of 50 kHz - 29.999 MHz.

quote:
Frequency Range:

LW, AM, FM, FM Stereo
SW (continuous 50 kHz - 29.999 MHz, AM & SSB/CW modes)


»support.radioshack.com/support_e···6356.htm

So to make it simple, I referred to it as the shortwave radio time calibration signal so as not to be confused with standard AM radios with a lower range of 530 KHz or FM radio signal.

Before you nitpick me on that ;) :

quote:
At 60 kHz, there isn’t enough room on the signal (bandwidth) to carry a voice or any type of audio information. Instead, all that is sent is a code, which consists of a series of binary digits, or bits, which have only two possible values (0 or 1). These bits are generated at WWVB by raising and lowering the power of the signal. They are sent at a very slow rate of 1 bit per second, and it takes a full minute to send a complete time code, or a message that tells the clock the current date and time. When you turn a radio controlled clock on, it will probably miss the first time code, so it usually takes more than one minute to set itself (sometimes 5 minutes or longer) depending on the signal quality and the receiver design.


»www.nist.gov/pml/div688/grp40/ra···ocks.cfm

I have a Radio Shack DX-394 and a Grundig Mini 300 World Band Receiver.

I'd like to part with the DX-394, it's never been modded. I live in an apartment building and can't string a wire and it's been years since I've listened to it. I won a contest on the Taipei Taiwan shortwave radio station several years ago using the 394 to listen to it though.]]> http://www.dslreports.com/forum/Re-nbsp-28176881 Sun, 07 Apr 2013 14:03:59 EDT Re:   http://www.dslreports.com/forum/Re-nbsp-28174779 said by Trihexagonal:

Yes, it syncs with the shortwave radio time calibration signal from the atomic clock in Fort Collins, CO. every night, when the signal propagates best.

I am nitpicking, but WWVB carries the atomic time signal these timepieces sync to, on 60 kHz, which is longwave. You might be thinking of its sister stations WWV and WWVH, which indeed do broadcast on shortwave frequencies.]]> http://www.dslreports.com/forum/Re-nbsp-28174779 Sat, 06 Apr 2013 14:13:30 EDT Re: Digital Clock Without Electricity or Moving Parts http://www.dslreports.com/forum/Re-Digital-Clock-Without-Electricity-or-Moving-Parts-28146876 http://www.dslreports.com/forum/Re-Digital-Clock-Without-Electricity-or-Moving-Parts-28146876 Thu, 28 Mar 2013 09:07:45 EDT Re: Digital Clock Without Electricity or Moving Parts http://www.dslreports.com/forum/Re-Digital-Clock-Without-Electricity-or-Moving-Parts-28146059 --
Buckle Up. It makes it harder for the aliens to suck you out of your car.
Click for full size
]]> http://www.dslreports.com/forum/Re-Digital-Clock-Without-Electricity-or-Moving-Parts-28146059 Wed, 27 Mar 2013 21:59:31 EDT Re: Digital Clock Without Electricity or Moving Parts http://www.dslreports.com/forum/Re-Digital-Clock-Without-Electricity-or-Moving-Parts-28110062 said by Thane_Bitter:

Given it's costs a sundial does the same and for much less, hell you can build one out of a sheet of cardboard and a bit of tape. If you want something more elaborate there are sundials that give mean time rather than solar time.

The Deluxe model...

[att=1]
]]> http://www.dslreports.com/forum/Re-Digital-Clock-Without-Electricity-or-Moving-Parts-28110062 Sun, 17 Mar 2013 00:47:46 EDT Re: Digital Clock Without Electricity or Moving Parts http://www.dslreports.com/forum/Re-Digital-Clock-Without-Electricity-or-Moving-Parts-28109972 http://www.dslreports.com/forum/Re-Digital-Clock-Without-Electricity-or-Moving-Parts-28109972 Sat, 16 Mar 2013 23:53:47 EDT Re: Digital Clock Without Electricity or Moving Parts http://www.dslreports.com/forum/Re-Digital-Clock-Without-Electricity-or-Moving-Parts-28109353
]]> http://www.dslreports.com/forum/Re-Digital-Clock-Without-Electricity-or-Moving-Parts-28109353 Sat, 16 Mar 2013 19:22:07 EDT Re:   http://www.dslreports.com/forum/Re-nbsp-28108613 said by Dude111:

Atomic time keeping? (Does that mean it auto syncs with a time server?)

Yes, it syncs with the shortwave radio time calibration signal from the atomic clock in Fort Collins, CO. every night, when the signal propagates best.

I have an atomic wall clock too. :p

»www.lacrossetechnology.com/8117o···ndex.php]]> http://www.dslreports.com/forum/Re-nbsp-28108613 Sat, 16 Mar 2013 14:08:24 EDT   http://www.dslreports.com/forum/nbsp-28108567 http://www.dslreports.com/forum/nbsp-28108567 Sat, 16 Mar 2013 13:49:26 EDT Re: Digital Clock Without Electricity or Moving Parts http://www.dslreports.com/forum/Re-Digital-Clock-Without-Electricity-or-Moving-Parts-28108503
»www.gshock.com/watches/Classic/MTG900DA-8V

I have one like this and really like it. :)]]> http://www.dslreports.com/forum/Re-Digital-Clock-Without-Electricity-or-Moving-Parts-28108503 Sat, 16 Mar 2013 13:17:52 EDT Re: Digital Clock Without Electricity or Moving Parts http://www.dslreports.com/forum/Re-Digital-Clock-Without-Electricity-or-Moving-Parts-27830064 http://www.dslreports.com/forum/Re-Digital-Clock-Without-Electricity-or-Moving-Parts-27830064 Mon, 17 Dec 2012 05:13:39 EDT Digital Clock Without Electricity or Moving Parts http://www.dslreports.com/forum/Digital-Clock-Without-Electricity-or-Moving-Parts-27828842 A solar digital clock!

Theres even a smaller version for your window :)

]]> http://www.dslreports.com/forum/Digital-Clock-Without-Electricity-or-Moving-Parts-27828842 Sun, 16 Dec 2012 16:47:03 EDT