Re: [time-nuts] TDF (Was Re: RFDO - Experience and questions)

On Tue, Mar 07, 2017 at 05:37:54PM +0100, emmanuel.fuste--- via time-nuts wrote: > Here you have bulletin H from Observatoire de Paris (responsible for SYRTE > and IERS/ICRS,IRTS) > https://syrte.obspm.fr/tfc/temps/outgoing_data/laboTAF/bulH/ > And here the monitoring of the TDF162 signal from

Re: [time-nuts] RFDO - Experience and questions

Paul the off-air standards I have and another UK make I dont posses divide the 10MHz standard and the off-air carrier down to 2kHz for locking. It may not be the best but it is generally adequate for off air LF standard distribution. My unit will cover 162kHz or 198kHz. Alan G3NYK -

Re: [time-nuts] TDF (Was Re: RFDO - Experience and questions)

On Tue, Mar 07, 2017 at 10:04:45AM +, Iain Young wrote: > On 07/03/17 03:35, paul swed wrote: > >Actually as I think about it from the earlier part of the thread. Locking > >to the carrier with a 2-4 second time constant removes the phase modulation > >since its only in the first 200 ms. The

Re: [time-nuts] Re: TDF (Was Re: RFDO - Experience and questions)

As you could see in Bul H and on the wikipedia page, there is maintenance every Thursday between 00:00 UTC-04:00 UTC We will see the real maintenance report in BUL-H 591 for March (to be published in April). Le 07/03/2017 à 19:43, paul swed a écrit : warming up a receiver to see If I can

[time-nuts] TDF (Was Re: RFDO - Experience and questions)

On 07/03/17 03:35, paul swed wrote: Actually as I think about it from the earlier part of the thread. Locking to the carrier with a 2-4 second time constant removes the phase modulation since its only in the first 200 ms. The 0 Phase is 800 ms in length or more for all bits. Now to find some

Re: [time-nuts] TDF (Was Re: RFDO - Experience and questions)

Thanks I have a sense Tdf is a big question But it's pretty strong here On Tuesday, March 7, 2017, Iain Young wrote: > On 07/03/17 03:35, paul swed wrote: > > Actually as I think about it from the earlier part of the thread. Locking >> to the carrier with a 2-4 second time

Re: [time-nuts] TDF (Was Re: RFDO - Experience and questions)

Hey Paul, My apologies, false alarm, it returned about mid-day French time. I guess they had some extended maintenance work to do, or something that needed daylight Iain On 07/03/17 14:10, paul swed wrote: Thanks I have a sense Tdf is a big question But it's pretty strong here On Tuesday,

[time-nuts] TDF (Was Re: RFDO - Experience and questions)

Hello, Sorry for breaking the thread, I was only following webmail archives until today. Here you have bulletin H from Observatoire de Paris (responsible for SYRTE and IERS/ICRS,IRTS) https://syrte.obspm.fr/tfc/temps/outgoing_data/laboTAF/bulH/ And here the monitoring of the TDF162 signal

[time-nuts] time/sampling behavior of RTL-SDR

Has anyone ever looked at the timing consistency/behavior of the cheap RTL-SDR dongles? That is, if you feed a sine wave in and get the samples out via the USB interface, are there missing samples? What's the ADC clock look like? If you had two of them, and you determine the relative phase

Re: [time-nuts] TDF (Was Re: RFDO - Experience and questions)

Hi, The transmitter is undergoing significant maintenance and testing in view of reducing power (and cost). They were off on the Morning of the 7th and will also do a power test on the 14th at 5:00am French time. The ANRF site is asking for reporting if users get impacted. Maybe you should

Re: [time-nuts] RFDO - Experience and questions

Hi, Actually, even with some unknown fields, as you have the majority know through prediction, much of the gain is being had that way. The actual information rate of even GPS is very low. Cheers, Magnus On 03/06/2017 08:26 AM, Bob Camp wrote: Hi One way to “cheat” at recovering a time

Re: [time-nuts] time/sampling behavior of RTL-SDR

Hi Jim, Did you look at the below article? http://www.rtl-sdr.com/a-multi-channel-coherent-rtl-sdr-product-for-passive-radardirection-finding-and-more/ --     Björn Sent from my smartphone. Original message From: jimlux Date: 07/03/2017 22:08 (GMT+01:00)

Re: [time-nuts] TDF (Was Re: RFDO - Experience and questions)

Well I have to say I only receive the signal at night but again -90 dbm at what ever level they are sending. It would be very easy to work with that signal. Regards Paul WB8TSL On Tue, Mar 7, 2017 at 4:09 PM, Clemgill wrote: > Hi, > The transmitter is undergoing

Re: [time-nuts] time/sampling behavior of RTL-SDR

I bought one awhile back from a company called NooElec as more of a novelty item than anything. But I can say it runs quite hot and if you tune to the 3rd harmonic of a 10 MHz reference it takes a while to thermally stabilize. In hindsight spending the extra 3-4 dollars for one with a TCXO would

Re: [time-nuts] time/sampling behavior of RTL-SDR

On 3/7/17 3:50 PM, bg wrote: Hi Jim, Did you look at the below article? http://www.rtl-sdr.com/a-multi-channel-coherent-rtl-sdr-product-for-passive-radardirection-finding-and-more/ -- Björn hadn't seen that one, but in my application the RTLSDRs are separated by substantial distances, so

Re: [time-nuts] TDF (Was Re: RFDO - Experience and questions)

warming up a receiver to see If I can hear it during the day. Could not yesterday. On Tue, Mar 7, 2017 at 11:04 AM, Iain Young wrote: > Hey Paul, > > My apologies, false alarm, it returned about mid-day French time. > > I guess they had some extended maintenance work to do, or

Re: [time-nuts] RFDO - Experience and questions

Gilles I went back over the starting thread and believe your home brew oscillator may prevent you from getting all of the accuracy out of TDF. As I was thinking about a TRF radio and locking the question I arrived at is how do you turn 162KHz into something useful like 100 KHz 5 MHz or 10 MHz??.

Re: [time-nuts] RFDO - Experience and questions

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