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Have dirty signal with all kinds of snow with new wiring in the house and connections in box on the house. Service man coming tomorrow as they never went up pole last time. Tech help had me use new converter and saw signal strength was jumping from 17 to 20 db on my screen but SN number just said N/A which seemed strange to the help desk person. Read on the net good signal at tv should be between 60-100 db. Are they starving me of a real strong signal? What should Isay when the repair man comes to not look too foolish?
Thanks in advance!
 

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If that # is out of the DCT diagnostic screen, it's an SNR value, not a signal level value.

Prefered signal level is 0 dBmV with MER > 35 (the tech can determine these levels on his meter)

Regarding that "good signal level" I think you've misread something.

100 dBmV = 100Volts

I doubt your tv's tuner would withstand that type of voltage.
 
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