I always had an issue with some weak Dishtv transponders of NSS6 satellite.
The signal was not consistent and often there was picture freezing.
My dishes are installed in the home balcony itself to facilitate alignment and testing on my TVs.
Then I attached a plastic funnel to the mouth of the feed-horn of the LNB like the conical scalar ring my C-band dish has.
There was a considerable increase in signal quality and no outage as it happened before.
Using a Metal funnel will give better results.
Also make sure the smaller edge of funnel co-incides with the white plastic part of the LNB feed-horn mouth. Try it.
[color=#696969]Vinay K[/color] [color=#DFE8EC]………[/color]___/[size=x-large][color=#8B4513]([/color][/size][color=#800000]>[/color][size=xx-small][color=#FF0000])[/color][/size][size=x-small][color=#32CD32])[/color][/size][size=small][color=#1E90FF])[/color][/size][i]
[color=#483D8B]Satellite Systems, Electronics & Cable TV Specialist[/color][/i][/font]