[time-nuts] Re: local WWVB ?

Hi The problem with any local signal is that even if it is “propagated” via coupling to the AC power lines or something equally obscure, once it gets off your property, you (potentially) are in trouble …. Bob > On Dec 11, 2021, at 11:20 AM, Andy Talbot wrote: > > To "transmit" on 60kHz and r

[time-nuts] Re: local WWVB ?

That is a very impressive project. -=Bryan=- From: Robb via time-nuts Sent: December 11, 2021 5:48 AM To: Discussion of precise time and frequency measurement Cc: Robb Subject: [time-nuts] Re: local WWVB ? When there was talk a few years ago about this

[time-nuts] Re: local WWVB ?

When there was talk a few years ago about this service going away I found this alternative: https://www.anishathalye.com/2016/12/26/micro-wwvb/ -- Sent with Tutanota, the secure & ad-free mailbox. Dec 10, 2021, 15:54 by lawrence.bra...@gmail.com: > Hi Folks, > > > > I always like your di

[time-nuts] Re: local WWVB ?

To "transmit" on 60kHz and radiate ANY reasonable power needs a very large antenna. I used to transmit on 73kHz when we briefly had an amateiur band there, have 7 metre high antenna with a substantial capacity hat, was putting 200 Watts into it but was getting an estimated radiated power of just

[time-nuts] Re: local WWVB ?

There are software "emulators" for WWVB, JJY, MSF, DCF77 available for both iPhones and Android phones that transmit very low power time signals through the mobile phone speakers as a harmonic. See https://play.google.com/store/apps/details?id=jp.houryo.wwvbemulator&hl=en_US

[time-nuts] Re: local WWVB ?

Hi Unfortunately not all of us are living in part of the world with reliable reception of timcode data. I have been using the "Chronvertor" feed by a cheap GPS board for years to emulate MSF Rugby time signal for a special

[time-nuts] Re: local WWVB ?

Although not advisable a search of the Internet will turn up several. There is a well know Raspberry PI version. The range of the transmitters is only a couple of feet so if placed next to your clock it will work. Anything that would cover your entire house would certainly not be advised. The

[time-nuts] Re: local WWVB ?

On Fri, 10 Dec 2021 15:54:55 -0500 "Lawrence Brandt" wrote: > Has anyone designed and/or sold a "WWVB repeater" device? I can picture a > Raspberry Pi which had software to get NTP data or GPS-referenced time, and > a small 60 kHz transmitter, which would send the proper WWVB timecode data > to t

[time-nuts] Re: local WWVB ?

Hi Putting out a signal on a frequency like that is probably not a good idea. There *is* risk of it propagating … Better to just let the clocks lock to the real thing. Bob > On Dec 10, 2021, at 3:54 PM, Lawrence Brandt > wrote: > > Hi Folks, > > > > I always like your discussions! Now I'd