[mythtv-users] Tuning problems

Nigel Jewell nigel.jewell at grufty.co.uk
Wed Jan 2 08:55:12 UTC 2019


On 01/01/2019 19:53, Damian wrote:


> I'm in the UK and should be (at least we used to be!) in the Mendip area.
>
> Here are the details hoe how Mendip 'should' tune ...
> https://ukfree.tv/transmitters/tv/Mendip 

> I should mention that if I need to go to the command line, my level is
> 'ls' and 'top'! :-) I can follow instructions, but have no idea what I'm
> doing in there.

> I've got 2x Hauppage Nova Win TV sticks (the one's that I've been 
> calling SD).
> And one pctv 292e stick (the one's that I've been calling HD).


I am also using the Mendip transmitter, and I'm also using a mix of 
those capture cards (although to be honest, the specific card should be 
irrelevant).  They both work fine for me with Fedora 29 (and previous 
versions), but I did need to add the firmware file for the 292e.

I've also had constant problems with tuning via MythTV and I've been 
using it since v0.19ish (now using v29).  In the end I completely gave 
up trying to tune from within mythtv-setup and wrote a script that uses 
scandvb and dvbv5-scan, parses the output and manipulates the database 
tables directly.  Not ideal, but it's given me a lot more control over 
the results and since doing this I don't have duplicates, broken 
multiplex data etc.  I am *NOT* suggesting that you do this of course, 
but I am recognising the problem - you are not alone!

I've attached the scandvb and dvbv5-scan "initial files" that I use.  
They might be a good reference of "good" data for you to plug into 
MythTV and configure it prior to performing the channel scan.  I am 
pretty sure they are accurate as my script tends to spot problems with 
multiplexes, etc. although it's not failsafe as some of the output from 
dvbv5-scan can be missing key info such as channel numbers and scandvb 
does not handle DVBT2.

I do have a long term hobby project to use what I've learnt from poking 
around with scandvb, dvbv5-scan and mythtv-setup to create an 
alternative more suited to my needs, but it's very stop start as I have 
a lot to learn about the libdvbv5 API along the way. One day I'll finish 
it :)

Regards,

Nige.

-------------- next part --------------
# UK, Mendip

# DTG-3 = 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2
[PSB1 BBCA C49]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 698000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 2/3
	CODE_RATE_LP = 1/2
	MODULATION = QAM/64
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/32
	HIERARCHY = NONE
	INVERSION = AUTO

# DTG-3 = 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2
[PSB2 D3+4 C54]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 738000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 2/3
	CODE_RATE_LP = 1/2
	MODULATION = QAM/64
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/32
	HIERARCHY = NONE
	INVERSION = AUTO

# DTG-6 = 256QAM 32K 2/3 40.2Mb/s DVB-T2 MPEG4
[PSB3 BBCB C58]
	DELIVERY_SYSTEM = DVBT2
	FREQUENCY = 770000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 2/3
	CODE_RATE_LP = 1/2
	MODULATION = QAM/256
	TRANSMISSION_MODE = AUTO
	GUARD_INTERVAL = 1/32
	HIERARCHY = NONE
	STREAM_ID = 0
	INVERSION = AUTO

# DTG-8 = 64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
[COM4 SDN C48]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 690000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 3/4
	CODE_RATE_LP = 1/2
	MODULATION = QAM/64
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/32
	HIERARCHY = NONE
	INVERSION = AUTO

# DTG-8 = 64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
[COM5 ArqA C33]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 570000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 3/4
	CODE_RATE_LP = 1/2
	MODULATION = QAM/64
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/32
	HIERARCHY = NONE
	INVERSION = AUTO

# DTG-8 = 64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
[COM6 ArqB C52]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 722000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 3/4
	CODE_RATE_LP = 1/2
	MODULATION = QAM/64
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/32
	HIERARCHY = NONE
	INVERSION = AUTO

# DTG-12 = QSPK 8K 3/4 8.0Mb/s DVB-T MPEG2
[LBS]
	DELIVERY_SYSTEM = DVBT
	FREQUENCY = 714000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 3/4
	CODE_RATE_LP = 1/2
	MODULATION = QPSK
	TRANSMISSION_MODE = 8K
	GUARD_INTERVAL = 1/32
	HIERARCHY = NONE
	INVERSION = AUTO

# DTG-6 = 256QAM 32K 2/3 40.2Mb/s DVB-T2 MPEG4
[COM7 C36]
	DELIVERY_SYSTEM = DVBT2
	FREQUENCY = 594000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 2/3
	CODE_RATE_LP = 1/2
	MODULATION = QAM/256
	TRANSMISSION_MODE = AUTO
	GUARD_INTERVAL = 1/32
	HIERARCHY = NONE
	STREAM_ID = 0
	INVERSION = AUTO

# DTG-6 = 256QAM 32K 2/3 40.2Mb/s DVB-T2 MPEG4
[COM8 C35]
	DELIVERY_SYSTEM = DVBT2
	FREQUENCY = 586000000
	BANDWIDTH_HZ = 8000000
	CODE_RATE_HP = 2/3
	CODE_RATE_LP = 1/2
	MODULATION = QAM/256
	TRANSMISSION_MODE = AUTO
	GUARD_INTERVAL = 1/32
	HIERARCHY = NONE
	STREAM_ID = 0
	INVERSION = AUTO
-------------- next part --------------
# UK, Mendip
# T freq bw fec_hi fec_lo mod tm guard hier

# PSB1 / BBCA C49
T 698000000 8MHz 2/3 1/2 QAM64 8k 1/32 NONE
# PSB2 / D3+4 C54
T 738000000 8MHz 2/3 1/2 QAM64 8k 1/32 NONE
# PSB3 / BBCB C58
T 770000000 8MHz 2/3 1/2 QAM256 AUTO 1/32 NONE
# COM4 / SDN  C48
T 690000000 8MHz 3/4 1/2 QAM64 8k 1/32 NONE
# COM5 / ArqA C56
T 754000000 8MHz 3/4 1/2 QAM64 8k 1/32 NONE
# COM6 / ArqB C52
T 722000000 8MHz 3/4 1/2 QAM64 8k 1/32 NONE
# LBS         C51
T 714000000 8MHz 3/4 1/2 QPSK 8k 1/32 NONE
# COM7 / ArqC C33
T 570000000 8MHz 2/3 1/2 QAM256 AUTO 1/32 NONE
# COM8 / ArqD C35
T 586000000 8MHz 2/3 1/2 QAM256 AUTO 1/32 NONE


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