That map is BS. I live in Rochester (you’ll see it on the north coast in NH). We don’t get AM1200 at all. Ever. (Well, not on my radios at least)
yes radio-locator maps are suggested reception...for me in Beverly it’s not bad by day and so so at night, maybe a 7 out of 10. In some markets Clear Channel will launch their talk station on a strong FM but they don’t want to sacrifice 94.5 or 107.9 which get good ratings w/ music
For you I’d think Rush is on am 930, WGIR’s sister station, right? 1540 in Exeter used to be talk too but got sold and does oldies now