HFU HF Underground
Loggings => Longwave Loggings => Topic started by: iw2nzr on October 16, 2020, 0921 UTC
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Yesterday 15 October 2020, from 2140 UTC. YL and OM talk/interview in French, mentioned Paris and "Le Ministre", signal weak in the North of Italy. Reactivated with low power?
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16 october: 2040 UTC different program between 162kHz and RTL 234kHz; at 2145 UTC Luxembourg effect (same signal on 234 ad 162). On October 15 and on Oct. 16, 2040UTC, there were another Gorki-Luxembourg effect with another station, different from RTL?
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There is no France Inter broadcasts anymore. They discontinued back in December 31, 2016 They are only available online, DAB and FM if you visit France.
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The Allouis transmitter is no longer a broadcast transmitter,
but is still on the air as a time signal station.
Thousands of public clocks, parking meters and so on
are tied to the signal on 162 kHz.
The modulation is just some low phase modulation of the carrier,
that was compatible with the audio broadcasting.
Since the broadcasting ceased, the carrier power has been decreased cautiously.
Also, the weekly maintenance off time has been moved to a day time period.
There are SDR software decoders to read the encoded signals.
Even without that, I could hear 'something' when using SAM on 162 kHz, with the sync demodulator readjusting the phase after each move.
As a LW carrier station, it could be modulated by "Luxembourg" effect at times in some places. If it's in French and not by the RTL station on 234 kHz, then it could be from Algiers on 252 kHz, or from Tangiers on 171 kHz.
Remember that the Europe LW on 183 kHz has been stopped and demolished. The RMC transmitter on 218 kHz is off the air since April 1st, 2020.
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There is no France Inter broadcasts anymore. They discontinued back in December 31, 2016 They are only available online, DAB and FM if you visit France.
Only FM and online. So far, not on DAB.
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That's interesting about the post-2016 use of the Allouis transmitter.
Tonight in USB mode I could hear a pulsing sound that was just a little bit faster than one pulse per second (as I compared it to the NIST website), and when that stopped after a few minutes, there was still a carrier on this frequency. I presume these are both related to the new application of the LW signal on 162 khz, but not sure.
https://en.wikipedia.org/wiki/TDF_time_signal (https://en.wikipedia.org/wiki/TDF_time_signal)
https://syrte.obspm.fr/spip/services/ref-temps/article/mise-a-disposition-du-temps-legal-par-le-signal-als162?lang=en (https://syrte.obspm.fr/spip/services/ref-temps/article/mise-a-disposition-du-temps-legal-par-le-signal-als162?lang=en)
Thanks for confirming SIGINT!
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Definitly active and strong and IDed as F TDF timesignal on the University of Twente Wide-band WebSDR.
http://websdr.ewi.utwente.nl:8901/ (http://websdr.ewi.utwente.nl:8901/)
(http://www.milspec.ca/board/img/2021-07-09_232942.png)