[mythtv-users] SBS Mebourne DVB Linux 2.6.16 mythtv broken

[Brian May]

>>>>> "Ben" == Ben  <debian-list at blueturtles.com> writes:

    Ben> Works OK here

    Ben> Myth reports signal strength 94% (North west Melbourne) on
    Ben> the backside of a hill with Kworld Xpert card.

    Ben> # uname -a Linux myth 2.6.17 #1 PREEMPT Fri Jun 23 13:06:24
    Ben> EST 2006 i686 GNU/Linux

    Ben> SBS # femon -a 2 using '/dev/dvb/adapter2/frontend0' FE:
    Ben> Zarlink MT352 DVB-T (TERRESTRIAL) status 1f | signal f2df |
    Ben> snr bebe | ber 00000000 | unc 00000000 | FE_HAS_LOCK status
    Ben> 1f | signal f24f | snr bfbf | ber 00000000 | unc 00000000 |
    Ben> FE_HAS_LOCK

With 2.6.8 (suspect this doesn't matter for tzap):

mythtv:/root$ tzap  "SBS DIGITAL 1"
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
tuning to 536625000 Hz
video pid 0x00a1, audio pid 0x0051
status 00 | signal c5c5 | snr f1f1 | ber 0001fffe | unc 00000000 | 
status 1f | signal c6c6 | snr fdfd | ber 0000b99c | unc 00000000 | FE_HAS_LOCK
status 1f | signal c6c6 | snr fefe | ber 000003ce | unc 00000000 | FE_HAS_LOCK

which seems kind of crappy compared with our close (and line of sight)
location to the transmitters (Mount Dandenong).

With ABC it is even worse:

mythtv:/root$ tzap  "ABC TV Melbourne"
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
tuning to 226500000 Hz
video pid 0x0200, audio pid 0x028a
status 00 | signal c0c0 | snr efef | ber 0001fffe | unc 00000000 | 
status 1f | signal c0c0 | snr f7f7 | ber 000030a8 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c1c1 | snr fefe | ber 00002f60 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c0c0 | snr fefe | ber 00002dae | unc 00000000 | FE_HAS_LOCK
status 1f | signal c1c1 | snr 0000 | ber 00002bf6 | unc 00000000 | FE_HAS_LOCK

However, there are no problems with ABC. No sense here.

The occasional snr of 0000 also seems weird:

mythtv:/root$ tzap  "ABC TV Melbourne"
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
tuning to 226500000 Hz
video pid 0x0200, audio pid 0x028a
status 00 | signal c1c1 | snr e9e9 | ber 0001fffe | unc 00000000 | 
status 1f | signal c1c1 | snr fcfc | ber 00002848 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c0c0 | snr fefe | ber 0000248c | unc 00000000 | FE_HAS_LOCK
status 1f | signal c1c1 | snr 0000 | ber 000026a4 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c1c1 | snr 0000 | ber 00002774 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c1c1 | snr fefe | ber 00002744 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c0c0 | snr 0000 | ber 00002606 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c1c1 | snr fefe | ber 00002278 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c1c1 | snr fefe | ber 000020be | unc 00000000 | FE_HAS_LOCK
status 1f | signal c1c1 | snr fefe | ber 0000212a | unc 00000000 | FE_HAS_LOCK
status 1f | signal c1c1 | snr fefe | ber 00002190 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c1c1 | snr fefe | ber 00002378 | unc 00000000 | FE_HAS_LOCK

mythtv:/root$ tzap  "SBS DIGITAL 1"
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
tuning to 536625000 Hz
video pid 0x00a1, audio pid 0x0051
status 00 | signal c5c5 | snr f0f0 | ber 0001fffe | unc 00000000 | 
status 1f | signal c6c6 | snr fafa | ber 00000350 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c6c6 | snr fdfd | ber 00000338 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c5c5 | snr fefe | ber 00000334 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c5c5 | snr 0000 | ber 0000035c | unc 00000000 | FE_HAS_LOCK
status 1f | signal c5c5 | snr fefe | ber 00000354 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c5c5 | snr fefe | ber 00000336 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c6c6 | snr fdfd | ber 0000034c | unc 00000000 | FE_HAS_LOCK
status 1f | signal c5c5 | snr fdfd | ber 0000034e | unc 00000000 | FE_HAS_LOCK
status 1f | signal c5c5 | snr 0000 | ber 00000360 | unc 00000000 | FE_HAS_LOCK
status 1f | signal c6c6 | snr 0000 | ber 0000034e | unc 00000000 | FE_HAS_LOCK
-- 
Brian May <bam at snoopy.apana.org.au>