I have Freeview using a cheapo Wharfedale tuner + hard disk recorder.
The tuner says that the signal strength is 100% (drops to 80% occasionally).
On most of the channels I watch (BBC1 ... Channel Five, BBC4, UKTV History/Dave) performance is perfect. One small thing though --- some faint video background appears on Channel Five --- perhaps visible on C5 because I was watching cricket with its ample plain background; but no breakup on C5.
However, specifically on Channel 4 + 1 and More 4, I get breakup; while that is happening, the signal strength indication remains good (I say that because there is a tree between my aerial and the transmitter and there has been a lot or rain recently.
I have RF entering the Freeview tuner/recorder and then off to the VHS recorder. Otherwise SCART connections --- assorted breeds acquired randomly.
Any suggestions as to the cause?
TIA,
Jon C.