I'd always thought WGLI 1290 had the same pattern at night as they had in the day, and that they just dropped to 1000 watts at night. Live and learn, Green ....
A pal of mine worked there for a while. Lol -- he was a DXer, too. Rodj would turn off the daytime switch and hear WNBF from Binghampton NY in the dead air.
He also said that they'd get phone calls (and requests) from Bermuda in the afternoon. That was where 99% of their signal went. The combination of WGLI and ZBM1 virtually next to each other on those Bermuda dials must've been all the radio that Pembroke ever needed.
Yet WGLI had permanent signal problems in Massapequa Park -- some eight miles west of their studios!
In the daytime, motoring along Sylvan Drive, one could hear the electromagnetic incest of their directional signal. I can't fathom how anyone who lived along that short 'service road' of the Southern State Parkway could listen to the hashing and clashing of a station maybe just 2 air miles away. The ear-popping racket was like that of 1010 WINS, in the daytime, a mile or so west of the Verrazano Bridge.
At night, on both sides of their corsetted nulls, in Commack and in Amityville, a driver could see their three blinking towers and hear WADO 1280 from NYC splashing onto them.
In the day, I once heard them in Nyack, up the Hudson River -- with Rockland County's own licensed WRRC Nanuet on the air at 1300.
And at night, WGLI and their 1000 watts put in a nice-enough signal along the Merritt Parkway near Stamford Connecticut. That 'back lobe' of WGLI's day and night pattern could be pretty impressive. Can't imagine how well they showed up in the Bermuda ratings, which was in their main lobe.
For YEARS, 1290 WGLI put out a weaker but credible signal / spur on 1160. Day and night. The aforementioned Roger could hear them on 1160 at his Huntington house. The 1160 (or thereabouts) WGLI signal curiously had the same directional properties peculiar to the main 1290 setup. We never knew why.
Great stuff, Schroed ! Thx !