Here in the back yard, I can see two warning lights of towers in the distance. All three I believe, are cellular repeater towers, and they have red lights that fade on and off. Sometimes, if the red light is out it seems there's a bright white light that flashes instead.

From the end of the street I can also see another tower in distance, also with red light.

There's nothing tall here in my city so nothing special. Some cell towers here have those red flashing obstruction lights. By one of the ReStores here, there's four tall towers (don't know what they're for) and they have xenon obstruction lights with different flash rates.

Not around me, but when we were on holiday in Llandudno in North Wales, if you looked out over the bay at like 3 in the morning, you could see all the red beacons on the offshore wind turbines out at sea, it was quite spooky in a way!

Some cellular towers with steady on Red lights

Not around me, but when we were on holiday in Llandudno in North Wales, if you looked out over the bay at like 3 in the morning, you could see all the red beacons on the offshore wind turbines out at sea, it was quite spooky in a way!

During the summer, My friend and I went to a racetrack in northeast Indiana, right at the State line for Ohio and Indiana there is a huge wind farm  and at night all you see is synchronized red flashing lights for miles on end , hundreds of them !!! VERY CREEPY !!!

Yes. There TV/Radio transmission towers on some of the first line of mountains(technically foothills). I can easily see the red warning lights on them from home at night.

Here in the back yard, I can see two warning lights of towers in the distance. All three I believe, are cellular repeater towers, and they have red lights that fade on and off. Sometimes, if the red light is out it seems there's a bright white light that flashes instead.

From the end of the street I can also see another tower in distance, also with red light.

Same here. I think I Can see 4 from my house, all with red lights that fade on and off.

where I live I can count 7 Cell phone towers
in a 10 miles view as I live on top of the hill

I can see a red obstruction light for a cell site down the road from my house, as well as some kind of not-FAA-approved blue LED beacon on a long rang wifi tower a couple miles away. It has an odd flash rate, too. I can also see an obstruction light on the water tower here in town if I stand in a certain spot in my yard.

From a certain window upstairs, there's a steady red light on a repeater tower at the old Aerojet munitions facility for city communications (police, fire, public works)

https://www.radioreference.com/apps/db/?sid=336

Noticeable from a hill in my neighborhood that overlooks the valley are the new 500kv transmission lines running between Chino and Mira-Loma substations; the towers supporting that power line are equipped with solar powered obstruction lights. They seem to flash in a row.

By one of the ReStores here, there's four tall towers (don't know what they're for) and they have xenon obstruction lights with different flash rates.

The exhaust stacks on Mountain view Generating Station ?

https://goo.gl/maps/ashDFfBSqej8DmC67

Theres a 400ft. radio tower, far from my house, and it has those L865 TWR Lighting white day and night strobes. Theres also a 200ft. cell tower near me, that was recently built, and it has no flashing strobe or beacon, or side lights on it.

There are some antennas at about 800 metres from my home but I don't see them from my windows.

However from my favourite campsite in a rural region, I noticed a very far antenna tower that has a white flashing beacon during the day that switches to a red blinking light during the night.

There are a few in the area, but our view of them is blocked by surrounding buildings.

I think I could see some of the red warning lights on top of the hydro towers a few km due north to where I live. They have a nice fade in and out to them so I suspect they're still incandescent. Maybe one of those 700w code beacon lamps.