[linux-dvb] Very low and bad signal in Linux

[Artem]

szap  -l C-BAND -n 1 -r
reading channels from file '/home/artem/.szap/channels.conf'
zapping to 1 'Kultura dubl-1':
sat 0, frequency = 3645 MHz H, symbolrate 28000000, vpid = 0x0065, apid = 
0x0066
using '/dev/dvb/adapter0/frontend0' and '/dev/dvb/adapter0/demux0'
status 1f | signal 4400 | snr 1800 | ber fffffffe | unc fffffffe | FE_HAS_LOCK
status 1f | signal 4500 | snr 1800 | ber fffffffe | unc fffffffe | FE_HAS_LOCK
status 1f | signal 4500 | snr 1800 | ber fffffffe | unc fffffffe | FE_HAS_LOCK
status 1f | signal 4500 | snr 1800 | ber fffffffe | unc fffffffe | FE_HAS_LOCK
status 1f | signal 0000 | snr 1a00 | ber fffffffe | unc fffffffe | FE_HAS_LOCK
status 00 | signal 0000 | snr 1200 | ber fffffffe | unc fffffffe | 
status 00 | signal 0000 | snr 1200 | ber fffffffe | unc fffffffe | 

When I watch TV by
mplayer /dev/dvb/adapter0/dvr0
Signal very bad, a huge noise. In win - OK. maybe Error Correction did not 
work?

bttv0: using: Twinhan DST + clones [card=113,insmod option]