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[linux-dvb] Re: AverTV DVB-T un-viewable QAM_64 channels (QAM_16work perfectly) ...massive noise



Thanks I just bought one of these cards today and had everything working fine in 30 minutes including the remote etc for mythtv... all my QAM_64 issues etc are resolved and i have a perfect picture

It looks like the avermedia card just needs some mega strong signal, ??possibly?? because its using some outdated technology

Also, just one problem with your remote config there..... the volume + and - are set up to do left and right, not [ and ] for volume up and down in myth, but then.....if you set them to [ and ] the arrow keys wouldnt work for directions in mythmusic etc.... how can we get round that?

Kind Regards
Richard Hamnett


Simon Kilvington wrote:

I've got a Hauppauge WinTV Nova-T PCI Digital TV Card - the one that
says FreeView on the box - and that came with a remote - plus you
don't need LIRC, you just need to "modprobe hid" and it automatically
sends events from /dev/input/event0 to the keyboard buffer.

Here's the key map I'm using for the budget-ci.c driver:

/*
* key map for remote that comes with Hauppauge WinTV Nova-T PCI Digital TV Card
* generate keys for MythTV rather than KEY_REWIND, KEY_PLAY, etc
*/
static u16 key_map[64] = {
/* 0x0X */
KEY_0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9,
0,
KEY_RED, /* red */
KEY_I, /* unlabeled */
KEY_M, /* menu */
0,
KEY_F9, /* mute */
/* 0x1X */
KEY_RIGHT, /* right/vol+ */
KEY_LEFT, /* left/vol- */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
KEY_PAGEDOWN, /* skip */
KEY_ESC, /* back/exit */
/* 0x2X */
KEY_UP, /* up/ch+ */
KEY_DOWN, /* down/ch- */
0, 0,
KEY_PAGEUP, /* replay */
KEY_ENTER, /* ok */
0, 0, 0,
KEY_BLUE, /* blue */
0, 0, 0, 0,
KEY_GREEN, /* green */
0,
/* 0x3X */
KEY_P, /* pause */
0,
KEY_COMMA, /* rewind */
0,
KEY_DOT, /* fforward */
KEY_SPACE, /* play */
KEY_P, /* stop */
KEY_R, /* record */
0, 0, 0,
KEY_O, /* go */
KEY_W, /* full */
KEY_POWER, /* power */
KEY_YELLOW, /* yellow */
0,
};


Rick Hamnett wrote:

Hi thanks for your input

The thing is the channels even QAM_64 work ok on windows, plus my flatmate has a proper digital freeview tvbox and he gets perfect reception too, tried it on my aerial socket too

If i bought a cheap happuage nova-t pci card ..... i think it doesnt come with a remote....but i want a remote....what can i do?

Thanks
Rick

Ed Wildgoose wrote:

Hi Rick

The scan made the output
ITV News:834166670:INVERSION_OFF:BANDWIDTH_8_MHZ:FEC_2_3:FEC_1_2:QAM_64:TRANSMISSION_MODE_2K:GUARD_INTERVAL_1_32:HIERARCHY_NONE:2850:2851:8588

Yep, looks reasonable



Ive also tried to # tzap "ITV News" and i get lock as follows

gentoo dvbtune-0.5 # tzap "ITV News"
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
tuning to 834166670 Hz
status 01 | signal ffff | snr 8198 | ber ffffffff | unc ffffffff |
status 1f | signal ffff | snr 84e8 | ber 0003ffe9 | unc ffffffff | FE_HAS_LOCK
status 1f | signal ffff | snr 7657 | ber 00000362 | unc ffffffff | FE_HAS_LOCK
status 1f | signal ffff | snr 8ca8 | ber 00000e4a | unc 00000000 | FE_HAS_LOCK
status 1f | signal ffff | snr 6226 | ber 0000057c | unc 00000040 | FE_HAS_LOCK
status 1f | signal ffff | snr 6f46 | ber 0000082d | unc 00000000 | FE_HAS_LOCK
status 1f | signal ffff | snr 6b56 | ber 000014bf | unc 00000000 | FE_HAS_LOCK
status 1f | signal ffff | snr 6156 | ber 000002ff | unc 00000000 | FE_HAS_LOCK
status 1f | signal ffff | snr 8aa8 | ber 0000129d | unc ffffffff | FE_HAS_LOCK
status 1f | signal ffff | snr 89e8 | ber 00000399 | unc 00000000 | FE_HAS_LOCK




Oops, those numbers look pretty bad... lots of uncorrectable errors (unc), and the ber seems high (but I think it depends on the driver).

Have you got a normal digi box to compare quality with? Perhaps the signal is just weak in your area?
Suggest that there is a lot to be said for shopping around for a cheap Nova-T, and keep this for a backup/second card... Perhaps the drivers will sort themselves out in time... I have a full featured £250 TT card that I thought was going to be great, and ended up with a Nova because it was FAR less hassle. It is working ok as a second card now though...

Good luck, sorry no more ideas...








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