However I updated the system to have following vdr setup:
VDR 1.6.0-2
ttxtsubs-0.0.8
skinenigma-0.1.0
osdteletext-0.8.1
femon-1.6.6
epgsearch-0.9.24
xineliboutput-1.0.4
burn cvs
I also noticed that I had already done the burn script change that I mentioned in the previous post.
I also applied the antenna amplifier and it did help a bit, but there's still some small breaks in audio while watching the live tv. Signal level was around 78-80% so it should be enough. I need to check is there some buffer setting in xineliboutput that could help in this problem.