To: "Wolfgang Bueschel_DF5SX" >
Sent: Tuesday, January 26, 2021
Subject: Re: TDF Issoudun in DRM mode on shortwaveHello Wolfy
Here's the answer from TDF
- - - -
Hello,
Since January 1, we have been carrying out new DRM tests
from our Issoudun distribution center.
These tests are initiated by TDF as part of our DRMCast project.
DRMCast is an OC receiver that we have developed on our own funds which
makes it possible to locally rebroadcast DRM content over wifi.
Through this gateway-type interface, any smartphone or tablet-type receiver
is thus capable of receiving sound, text and images broadcast in DRM.
The first tests were carried out on the minitransat in 2019 with
a race report for boats crossing the Atlantic.
We are not far enough advanced to date to address Vendée Globle type
races, but the Maritime world is a track that we are considering for
DRMCast.
For the time being, we have 4 30-minute broadcasting slots with RFi world
programs and some associated data:
13: 00-13:30 11735
15: 00-15:30 9905
17: 30-18:00 9905
23: 30-00:00 5875
These slots are likely to change in the days / weeks to come. These are
tests to continue our development, we are not communicating at the moment.
- - - -
Bonjour,
Nous réalisons depuis le 1er janvier de nouveaux tests en DRM depuis notre
centre de diffusion d’Issoudun.
Ces tests sont à l’initiative de TDF dans le cadre de notre projet DRMCast.
DRMCast est un récepteur OC que nous avons développé sur fonds propres qui
permet de rediffuser localement un contenu DRM en wifi. Par cette interface
du type gateway n’importe quel récepteur de type smartphone, tablette est
ainsi capable de recevoir son, texte et image diffusés en DRM.
Des premiers tests ont été réalisés sur la minitransat en 2019 avec un
bulletin course vers les bateaux qui traversaient l’atlantique. Nous ne
sommes pas assez avancés à ce jour pour adresser des courses de type Vendée
Globle, mais le monde Maritime est une piste que nous envisageons pour
DRMCast.
Pour l’heure nous avons 4 créneaux de 30mn de diffusion avec les programme
RFi monde et quelques données associées :
13:00-13:30 11735
15:00-15:30 9905
17:30-18:00 9905
23:30-00:00 5875
Ces créneaux sont susceptibles de changer dans les jours/semaines à venir il
s’agit ici de tests pour poursuivre nos développements, nous ne faisons pas
de communication pour le moment.
No problem for the translation ?
Bis bald !
Jean-Michel
Le samedi 23 janvier 2021 à 08:47:14 UTC+1, Wolfgang Bueschel_DF5SX
a écrit :
google_translator:
Developper, pour la Marine nationale, des transmissions hautes frequences
discretes sur longues distances
Cher Jean-Michel,
je voudrais vous demander des informations détaillées sur les tests
ISSoudun DRM: qui initie ces diffusions? Le Département de la Défense
de la Marine, la TDF, ou est-ce un service radio français régulier de la
RFI ?
salutations de Stuttgart,
Bonne année 2021,
restez toujours en bonne santé.
vy73 wolfie
https://www.wwdxc.de/topnews.shtml
FRANCE Developper, pour la Marine nationale, des transmissions hautes
frequences discretes sur longues distances. Some info on those TDF DRM
tests:
<https:www.defense.gouv.fr/aid/actualites/developper-pour-la-marine-nationale-des-transmissions-hautes-frequences-discretes-sur-longues-distances>
11735 kHz and 9905 kHz have been providing very good reception in
New Zealand for the last couple of nights. 73 Chris
(Chris Mackerell-NZL, wor Jan 21)
Re: Test frequencies of TDF in DRM mode:
11735 kHz DRM mode noted in KIWI Net sdr S=9+5dB at 13.02 UT on Sat Jan 16,
8.08kbps SNR, 16.4 dB, IF -9.7dB.
At Novokuzneck, Siberian Russia, Kiwi remotedly.
(wb df5sx, wwdxc BC-DX TopNews Jan 16)
FRANCE Unscheduled broadcast of Radio France International.
"Regular Radio France International broadcasts continue 24 hours a day on
3965 kHz from TDF Issoudun with 10 kW and an omnidirectional antenna."
It is also in DRM.
(hungaroboy via wor Jan 14)
Radio France International in DRM mode.
TDF performs "irregular" DRM broadcast tests during the month of January:
from 1 p.m. to 5 p.m. on 7405 kHz;
from 12 p.m. to 3 p.m. on 9900 kHz;
from 2:30 p.m. to 3:30 p.m. on 15285 kHz;
from 3:05 p.m. to 3:30 p.m. on 9905 kHz;
and from 11 p.m. to midnight on 5875 kHz.
These are data broadcasts mainly for tests of the DRMCAST system for ships.
The programs are broadcast by the Issoudun transmitter center (hours in
UTC). These emissions were not recorded in the HFCC Winter database.
Regular Radio France International broadcasts continue 24 hours a day on
3965 kHz from TDF Issoudun with 10 kW and an omnidirectional antenna.
(Michel FREMY-BEL,
<https:www.media-radio.info> wor Jan 14)
FRANCE Test frequencies of Radio France International RFI in DRM mode
1300-1330 11705 150 kW 70 deg to SoEaAS French January 11 - February 28
1500-1530 9905 150 kW 70 deg to SoEaAS French January 11 - February 28
1730-1800 9905 150 kW 70 deg to SoEaAS French January 11 - February 28
2330-2400 5875 150 kW 70 deg to SoEaAS French January 11 - February 28
1300-1700 7405;
1200-1500 9900;
1430-1530 15285;
1500-1530 9905
2300-2400 5875 kHz via TDF Issoudun,
all unregistered in Winter B20 HFCC Database.
0000-2400 3965 ISS 10 kW non-dir to WeEUR French is registered in HFCC
0900-1200 6175 ISS 100 kW 153 deg to SoEaEUR French is registered in HFCC
0900-1200 6175 ISS 100 kW 267 deg to SWEUR French is registered in HFCC
1200-1500 6175 ISS 150 kW non-dir to WeEUR French is registered in HFCC
0900-1200 6175;
1300-1700 7405;
1200-1500 9900;
1430-1530 15285
1500-1530 9905;
2300-2400 5875 via TDF Issoudun, all unregistered in HFCC
0000-2400 3965 ISS 010 kW non-dir to WeEUR French is registered in HFCC
(Ivo Ivanov-BUL, direct and hcdx via wwdxc BC-DX Topnews Jan 13)
This and other frequencies now entered on the drop-down DRM sked in the
player as TDF not RFI, but in pink as not verified rather than green as
verified. Did they get it from Ivo and where did he get it?
Not HFCC. Shows 2300-2400 UT on 5875 kHz like Ivo but it was *not* - on
when checked at 2311 UT, probably not starting until 2330 UT; and off
again after 2400 UT.
(Glenn Hauser-OK-USA, via Chris Mackerell-NZL, wor 13 / 14)
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