For Paris downtown, the Eiffel Tower is the main transmitter. For the surburb, the transmitters are listed below with their list of UHF channels (frequency in MHz = 306 + 8 * UHF-channel) Paris - Tour Eiffel : 21 24 27 29 32 35 Paris Est - Chennevières : 35 51 54 57 60 63 Paris Nord - Sannois : 35 51 54 57 60 63 Paris Sud - Villebon : 35 51 56 57 60 63 I have no official information on other modulation parameters, although the following should be fine for most of them: freq:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_2_3:FEC_NONE:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_32:HIERARCHY_NONE except for channel 35 (586 MHz) which is: 586000000:INVERSION_AUTO:BANDWIDTH_8_MHZ:FEC_3_4:FEC_NONE:QAM_64:TRANSMISSION_MODE_8K:GUARD_INTERVAL_1_8:HIERARCHY_NONE Also, an offset of n * 166.7 kHz may be applied to the frequency with n in the range -1 to +3 in France. I do not know where to find the official list of offsets for France. Using either a Hauppauge Nova-T-500 or a Nova-T-Stick, using the central frequency without offset seems fine in the Paris area. I also noted that using wrong values for some modulation parameters such as FEC or guard interval has no impact. The two above mentioned Hauppauge tuners automatically switch to the right values (these values are transmitted in the TPS). I do not know if the correct values are read from the TPS and applied by the hardware or driver (any info on the subject would be appreciated). Note that one of the 6 frequencies is currently mute (the so-called R5 MUX). It has been used in 2006 for DVB-H tests and in 2007 for DVB-T/HD tests. It will be used for official DVB-T/HD broadcasting in Q1 or Q2 2008. The map of current DTTV transmitters in France can be found at http://www.csa.fr/pdf/carte_TNT.pdf The current list of transmitters and their corresponding UHF channels can be found at http://www.csa.fr/pdf/frequences_tnt_planifiees_alpha.pdf (document in French). -Thierry -----Message d'origine----- De : linux-dvb-bounces@xxxxxxxxxxx [mailto:linux-dvb-bounces@xxxxxxxxxxx] De la part de Christoph Pfister Envoyé : dimanche 30 décembre 2007 13:48 À : Alexis de Lattre Cc : linux-dvb@xxxxxxxxxxx Objet : Re: New tuning file for eiffel tower DVB-T transmitter Am Montag 24 Dezember 2007 schrieb Alexis de Lattre: > On 22.12.2007 14:01, Christoph Pfister wrote : > >> - renamed file to fr-Paris_eiffel_tower as there are multiple DVB-T > >> transmitters in the Paris area. > > > > Normally, all transmitters in big cities use the same frequencies (so > > called single-frequency networks), so this rename shouldn't be necessary. > > It is not the case in the Paris area unless for multiplex R1 : mux R1 is > SFN but all the other muxes are MFN. That's why is it important to know > the transmitter and not just the city name. Argh. How many transmitters are there? I think it would be quite convenient (for the user) to only have one fr-Paris, so we could put multiple transmitters into that file ... > P.S. : I have enclosed the tuning file of another DVB-T transmitter of > the Paris area called "Paris Nord Sannois". Thanks, Christoph _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
