Yeah, it shouldn’t be switched, since it’s on a utility pole with a 3 phase transformer on top, but yeah. It could just have been a really luck sight. It was just so bizarre how it was really bright. The lamp isn’t that old, the church was completely rebuilt after it got struck by lightning in 2005. The streetlight should be from around 2007. Ael 115*

Maybe it's manually-switched? Also lamps can sometimes cycle on/off just once per night, or less....There was an AEL 125 by me in 250w HPS with a lamp installed in 1999... well by 2018 it turned on for about 15 seconds once every week or so. I asked my buddy, who lives across the roadway, to take note of when it was on in the evening. Of course, he may have never noticed it coming on in its brief mercury phase, but I VERY rarely saw it lit, and I would drive by every evening or so.

A fellow HAM! Nice to meet you, Ed.
Unfortunately I have no CRTs for oscilloscope, but I'm sure someone on here does.

Thanks,
Maxim KC3WFU

@Walter Knox — if you would like, I can send you a period-correct H39KB-175 made by Westinghouse, Philips-Westinghouse, or Philips. Let me know, it's yours for the cost of shipping.

@Cole D. — where did your reply go?

@Utah Lighting Collector -- Here it is. Message me with your address, etc. and I'll get back to you as soon as I can with a quote.

ATP Micro

Uh oh. Just a sec.

There's a couple, do you mean the ATBX, or the ATB Micro?

How much would a new autobahn cost? You know the tiny ones in like 50 watt usually? Florida*