Re: [time-nuts] WWVB Antenna revisited/Spectracom 8182

Martin NIST did preserve the AM data so that the cheapy clocks typically worked. But phase tracking receivers don't. Regards Paul WB8TSL On Fri, Mar 23, 2018 at 5:35 AM, Martin Burnicki < martin.burni...@burnicki.net> wrote: > paul swed write: > > I'll add to the comments the spectracoms are

Re: [time-nuts] WWVB Antenna revisited/Spectracom 8182

Hi There is a *lot* of analysis on the WWVB change in the archives. The bottom line seems to be that the change did not impact wall clocks and watches. The number of companies running WWVB phase synchronous gear *appears* to have been near zero at the time of the change. There certainly was no

Re: [time-nuts] WWVB Antenna revisited/Spectracom 8182

The AM modulation stuff is not affected also by the new WWVB signal. The WWVB problem affecting timing and frequency receivers is the 180deg phase modulation where the DFC77 is only 13deg and is randomized so that the mean phase is zero. On Fri, Mar 23, 2018 at 10:35 AM, Martin Burnicki

Re: [time-nuts] WWVB Antenna revisited/Spectracom 8182

paul swed write: > I'll add to the comments the spectracoms are phase tracking receivers and > do not work on the new BPSK signal. When the German PTB made effort to increase the accuracy and reliability of the DCF77 long wave receiver in the 1980s, they implemented thus in a way that old

Re: [time-nuts] WWVB Antenna revisited/Spectracom 8182

I'll add to the comments the spectracoms are phase tracking receivers and do not work on the new BPSK signal. As mentioned over the years I and others have offered approaches to correcting the carrier. My last approach that worked very well over great distances was the cheatin d-psk-er. Works

Re: [time-nuts] WWVB Antenna revisited/Spectracom 8182

organli...@pacbell.net said: > One would think inexpensive products would be sacrificed verses the more > expensive equipment. There are many many the low cost units and only a few of the expensive ones. It would be interesting to see how many of the expensive WWVB boxes were still running

Re: [time-nuts] WWVB Antenna revisited/Spectracom 8182

lacement for those vintage time services. /tvb - Original Message - From: "D. Resor" <organli...@pacbell.net> To: "'Discussion of precise time and frequency measurement'" <time-nuts@febo.com> Sent: Thursday, March 22, 2018 12:13 PM Subject: Re: [time-nuts] WW

Re: [time-nuts] WWVB Antenna revisited/Spectracom 8182

- From: time-nuts <time-nuts-boun...@febo.com> On Behalf Of Bob kb8tq Sent: Thursday, March 22, 2018 8:13 AM To: Discussion of precise time and frequency measurement <time-nuts@febo.com> Subject: Re: [time-nuts] WWVB Antenna revisited/Spectracom 8182 Hi You should DC block the out

Re: [time-nuts] WWVB Antenna revisited/Spectracom 8182

Hi You should DC block the output of the 8182 if you are going to run it straight to an antenna. The bigger issue is that WWVB changed their transmit format a couple years ago. The signal they now send is not compatible with a lot of gear out there. It turns out that the 8182 is included on

Re: [time-nuts] WWVB Antenna revisited/Spectracom 8182

On Thu, Mar 22, 2018 at 6:25 AM, D. Resor wrote: > I've been reading and researching what I will need to connect a Spectracom > 8182 Netclock/2 for use here at home as a WWV(B) clock. > from Spectracom's official website: `` 8182 NetClock/2 WWVB referenced master clock.