Mythtv and TBS 6205 quad tuner

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vbcoen
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Joined: Mon Dec 05, 2016 8:24 pm
Location: Hatfield, Herts, UK
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Mythtv and TBS 6205 quad tuner

Post by vbcoen » Mon Sep 04, 2017 12:57 pm

Having installed this card with no problems I find when scanning channels (in Herfordshire) I cannot get any HD channels or for that matter any in the 100 series channel numbers.

Tested with v0.27 and 0.28 using mythbuntu v 12.04.3 and 16.04.3.

Any one know what is wrong?

Vince

MikeB2013
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Re: Mythtv and TBS 6205 quad tuner

Post by MikeB2013 » Mon Sep 04, 2017 4:03 pm

I am also in Hertfordshire, my Freeview is from Sandy Heath transmitter.
I am not using 6205, but I am using a tbs 6280 (dual dvb-t/t2).

I presume you have installed the latest drivers from the tbs support site.

The lack of any channels in the 100 range indicates that atleast 2 multiplexes are not being found. BBC One HD, BBC Two HD etc on are one multiplex, BBC News HD is on another.

Are there any messages in the output of dmesg command in a terminal session after doing a channel scan in mythtv-setup indicating firmware download failure (if so it is likely that your card needs some firmware in /lib/firmware) ?

Have you checked Freeview coverage for your area ?
If you goto https://ukfree.tv/prediction and input your postcode it will give you a prediction and the name of closest your transmitter. If you click on the transmitter shown in the map it should take you the transmitter information page which gives the channels, which multiplex and transmitter power for the multiplex. Some HD multiplexes have much lower power than the main multiplexes, which may mean your card is not getting signal.

I would use mythbuntu 16.04 and mythtv 0.28, mythbuntu 12.04 is too old, and mythtv 0.27 is pretty much out of support, current mythtv version is 29, and mythtv 0.28 is still in support.

Mike

MikeB2013
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Re: Mythtv and TBS 6205 quad tuner

Post by MikeB2013 » Mon Sep 04, 2017 7:39 pm

Just noticed something interesting in tbs user guide for tbs 6205 here https://www.tbsiptv.com/download/tbs620 ... _guide.pdf

For linux drivers they are showing the open source drivers rather than what is on their main support site.

The interesting bit in the .pdf file is use of dvblast in section 7.2 of the document, it is doing something with DVB-T2 on one of the HD multiplexes 474000000, this the one that carries BBC One HD etc.

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