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Old 28-Jun-2014, 1:16 AM   #15
Retired A/V Tech
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,738
The problem is, the tuners in TVs and boxes can vary a lot in sensitivity, and ability to handle multipath problems, from model to model. What I do, is to compare two tuners side-by-side by using a variable attenuator and a splitter to find out which tuner drops out last as I reduce the signal.
                                  tuner #1
antenna > attenuator > splitter >
                                  tuner #2
With my equipment, my SONY KDL22L5000 has about the same sensitivity as my Apex DT502 and Centronics ZAT502HD boxes. My later SONY KDL22BX320 is about 2 dB more sensitive.
If you can not measure it, you can not improve it.
Lord Kelvin, 1883

Last edited by rabbit73; 28-Jun-2014 at 1:22 AM.
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