power company installed new meter, poor detection since

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I will guess it's a smart meter and what you are seeing is the meter sending its results back home. Is the meter close to your detector? Not sure what you can do about it.

Well, so far, we've been able to decline 'smart meters', (opt out) ... BUT, unfortunately, many of my neighbors haven't bothered, so they've been 'upgraded'...
...and you think it's bad with just ONE??? 
....not all this 'junk' sources from so-called smart meters: some is from other crappy 'electrics' & devices... Just wait until automobile chargers begin to infiltrate with greater density....  OH, dammit, we're getting near 'robot lawn mower' season, also...

Oh... 791 currently running experimental HORIZ POL, single H channel, only.