Picture Qlty of Sun Network Channels

picture quality is sooooo bad in some channels esp those small hindi channels like sahara ,jain ,raj tv ...etc .other things:also the pixel freeze occurs randomly for me.the gain is still 99% and signal strength @ 78% mostly.Is this something to do with monsoon ?BTW ,I recharged for Rs380(incl.taxes) and got Venus+ package! currently enjoying NGC ,HBO ,star movies etc. very good pic quality there for these channels.:dance::dance::yahoo::yahoo:

its because they are one of the pioneers in tv broadcasting in tamilnadu, india