Yes personally I think the sig is definitely a compelling marker. Especially after the patch that caused them to not be completely random anymore. Plus the fact of time. I have had a static that I did not warp to last upwards of a week. If in fact it was active it would have had the normal 24 hour timer.
Interiors for The Waltons were filmed on Stage 26 and Stage 20 of The Warner Bros. Studio which was known during the original series as The Burbank Studios.
There was a previous Walton County in Georgia, which was actually located in what is now western North Carolina. A brief skirmish, the so-called Walton War, was fought between North Carolina and Georgia in 1810, before Georgia relinquished its claim on that area after the 1811 survey of Ellicott Rock.