Technical question — Video Satellite Forum — DVD MP3 AVI MP4 players codecs conversion help

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I have Bell Express Vu in ntario, Canada; I also have a trailer in
South Texas where I also have a receiver and they both work on the
same account - until recently, I had access to the same channels in
Ontario and in Texas. Last time I went to Texas, I noticed that I no
longer had access to the majority of the channels. I took the receiver
back to Ontario and everything is fine with it. I tried adjusting the
antenna but the signal remains the same - on some transponders, it is
at 85-90 and on some other, it is lower. Can anybody give me advice on
how to fix that ? TIA.