> Since there's no mountain to stick them on, the FM and TV
> towers here are very high and are strobe-lit.
>
> I live about a mile and a half away. They don't change from
> night to day.
Actually they DO....the strobes change intensity from day to twilight to night...otherwise, the daytime setting would be causing shadows on the ground at your house!
(sometimes they DO go bad....106.9's old tower in Conroe had a problem back years ago...the clouds and fog rolled in and a friend of mine in Cut and Shoot could walk around his yard at night and could see his shadow everywhere!)
The towers could be red lamped (as most of the Dallas's towers are) but they have the option to be strobed...towers below 600ft iirc can use medium intensity while those over that are required to use high intensity ones....this for aircraft safety....if they are adjusted right, the strobes should throw most of their light at the horizon...not the ground......earlier versions did NOT have that feature..
Strobing 24 hrs deletes the need to paint the tower....that is a BIG cost...and also paint adds weight....strobes use less electricity overall than red lamps..
(some strobes can be used to emulate red lamps at night....a red filter is dropped in place and a longer burn time on the strobe makes it look red...but you can easily tell from the ground...a REAL lamp slowly comes on and goes off...a strobe doing red is instant on/off!)