[linux-dvb] Astra 2D parameters

["" <test@cambro.net>]

Hi All, 

I'm trying to get a Nova-S working in MythTV to tune into the FTA BBC channels here in the UK on Astra 2D. I'm not an expert in satellite terminology - Myth wants to know the following about the satellite/beam:

lnb_lof_switch
lnb_lof_hi
lnb_lof_lo

Does anyone know what these mean and where I'd find out the values for Astra 2D?

(I'm currently using the values of 11700000,10600000 & 9750000 respectively - but I think this is for another Astra satellite and so isn't working.)

Thanks for any help!


PS - For those that are interested, or know Myth, here is a full description I posted last week on the MythTV mailing list:

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Here is a breakdown of what's happening. All I really need is a small SQL dump from someone using the same Astra 28.2 satellite. 

Ok, ran scan giving it the following using the following tuning data: 

# Astra 28.2E SDT info service transponder 
# freq pol sr fec 
S 10773000 H 22000000 5 

It produced a channels.conf with lots of channels, for example: 

BBC 1 London:10773:h:0:22000:2304:2306:6301 

Now I used szap to tune to the channel: 

root@mythtv:/home/mythtv/linuxtv-dvb-apps-1.1.0/util/szap # ./szap "BBC 1 London" -a 2 
reading channels from file '/root/.szap/channels.conf' 
zapping to 5 'BBC 1 London': 
sat 0, frequency = 10773 MHz H, symbolrate 22000000, vpid = 0x0900, apid = 0x0902 
using '/dev/dvb/adapter2/frontend0' and '/dev/dvb/adapter2/demux0' 
status 1f | signal b177 | snr df14 | ber 0000ff00 | unc 00000000 | FE_HAS_LOCK 
status 1f | signal b2bd | snr df83 | ber 00000000 | unc 00000000 | FE_HAS_LOCK 
status 1f | signal b2be | snr df4d | ber 00000000 | unc 00000000 | FE_HAS_LOCK 
status 1f | signal b2af | snr de87 | ber 00000000 | unc 00000000 | FE_HAS_LOCK 

All looks good so far, but I don't know what exact tuning data to put in MythTV 

I think all the relevant frequencies are in dvb_channel, dvb_pids & dvb_sat. Here are the relevant entries for the BBC1 channel: 

INSERT INTO dvb_channel (chanid, serviceid, networkid, providerid, transportid, frequency, inversion, symbolrate, fec, polarity, satid, modulation, bandwidth, lp_code_rate, transmission_mode, guard_interval, hierarchy, pmtcache) VALUES (2000,6301,6301,6301,6301,10773000,'a',22000000,'auto','h',1,'auto','a','auto','a','auto','a',NULL); 

INSERT INTO dvb_pids (chanid, pid, type, lang) VALUES (2000,2304,'v',''); 
INSERT INTO dvb_pids (chanid, pid, type, lang) VALUES (2000,2306,'a',''); 

INSERT INTO dvb_sat (satid, cardid, pos, name, diseqc_type, diseqc_port, diseqc_pos, lnb_lof_switch, lnb_lof_hi, lnb_lof_lo) VALUES (1,3,28.2,'Astra 2D',0,0,0,11700000,10600000,9750000); 

But sadly the backend doesn't manage to tune to the channel: 

2004-10-23 06:18:17 DVB#2 Using DVB card 2, with frontend STV0299/TSA5059/SL1935 based. 
2004-10-23 06:18:21 DVB#2 WARNING - Status: NO LOCK! 
2004-10-23 06:18:21 DVB#2 WARNING - Status: CARRIER | NO LOCK! 
2004-10-23 06:18:21 DVB#2 WARNING - Status: SIGNAL | NO LOCK! 
2004-10-23 06:18:26 DVB#2 ERROR - Poll timed out too many times, bailing. 
2004-10-23 06:18:26 DVB#2 ERROR - Tuning for channel #25 failed. 

I'm pretty sure that I've got the stuff in dvb_sat wrong for the BBC FTA Astra satellite. I got it from this post: 

http://www.gossamer-threads.com/lists/mythtv/users/79614?search_string=astra;#79614 

But that was for the Astra 19.2 and I think I'm using Astra 28.2. 

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