Quote:
Originally Posted by jb66
When you have a long cable run RG11 is more effective than an HDU as the high frequency signals will be very low.
HDUs are mostly used in sid architecture where there are a set of taps every 20m. If your close to the amp there will be a 26db attenuated tap to lower the downstream, unfortunatly the upstream will also be attenuated by 26db so will be high. Its common for the upstream to be 47db from the pit in those situations. Add a 3 way splitter and a few connectors and the upstream rises above 55db.
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That was the setup here, pit very 20 metres or so, then I had 5 devices in the house.
So my signal levels were borderline -5 to -7 dbmv
With slightly high upstream.
But in my case I had a few engineers out and none would fit a HDU.
In the end had to fit one myself and now signal levels are spot on
and no problems since!