jb38, my fox t2 does give channel numbers as it scans; possibly different software versions are different on this? It also scans the whole range twice, and picks up different channels on the two scans, which could make your method a bit tricky; I don't know what the difference between the two scans is.
Returning to my own saga, I got the 24dB attenuator, and inserting that wiped out the signal entirely. In some ways this is a bit of a relief (a big enough attenuator should eventually do this), though it doesn't fit very sensibly with the behaviour of my 0-20dB variable attenuator.
More annoyingly, on returning to my variable attenuator the signal was not as good as before. My guess is that this is because I moved the fly lead in the process and the system is still very sensitive to that position. Various people have suggested that this could be due to a poorly shielded fly lead picking up signal, either directly or rebroadcast by the down lead (the installers didn't replace the coax below the loft when they installed the new aerial, so the condition is unknown; looking at it in the loft it seems old but sound enough).
Anyway my next set of plans involves (1) getting a better fly lead, and/or (2) trying an attenuator in the loft when the new coax from the aerial joins the down lead - this has F connectors so I can't use my existing attenuator family.
Sunday 9 October 2011 11:35AM
Oxford
jb38, my fox t2 does give channel numbers as it scans; possibly different software versions are different on this? It also scans the whole range twice, and picks up different channels on the two scans, which could make your method a bit tricky; I don't know what the difference between the two scans is.
Returning to my own saga, I got the 24dB attenuator, and inserting that wiped out the signal entirely. In some ways this is a bit of a relief (a big enough attenuator should eventually do this), though it doesn't fit very sensibly with the behaviour of my 0-20dB variable attenuator.
More annoyingly, on returning to my variable attenuator the signal was not as good as before. My guess is that this is because I moved the fly lead in the process and the system is still very sensitive to that position. Various people have suggested that this could be due to a poorly shielded fly lead picking up signal, either directly or rebroadcast by the down lead (the installers didn't replace the coax below the loft when they installed the new aerial, so the condition is unknown; looking at it in the loft it seems old but sound enough).
Anyway my next set of plans involves (1) getting a better fly lead, and/or (2) trying an attenuator in the loft when the new coax from the aerial joins the down lead - this has F connectors so I can't use my existing attenuator family.