I have a question about this antenna feedpoint. Why does it have two waveguides feeding the feedpoint? Does it have anything to do with H and V polarisation?

regarding the internal structures, what are they? Is this some kind of a waveguide polariser, phase delayer or something else?

I am a radio technician and drone pilot, among many other things. Figured this group would like some interesting shots.

I will get a clearer photo but i see cell
blocks and cell drums

always drove past this, me and my mom always wondered what that metal construction (first picture at the bottom) was, and i recently got interested in radio stuff and especially old antennae, imagine my happiness when I went on google street view to see this 🙏 hopefully this is the correct subreddit

This is a radar of Soviet "Система «А»"anti-missile system. The exact model is unknown.

Can anyone speculate on the mechanical structure of this radar?

Imagine the original photo minus the tower and everything.. it's not worth taking the picture..

I wonder where it all might have gone.. 🤔

Was departing Athens Greece and saw this on the mountain ridge.

Not sure if this is the right sub but I was looking at a house earlier and this thing was on the roof, the realtor didn’t know what it was either.

There was some red looking letting on the one side but it was all faded and scratched off m, I’m guessing it was a brand

** Sorry folks, I didn't post the pics on my last post**

Found this nestled among the highrises in Boston's Theater District while walking in the Common. Turns out, it's on top of the Massachusetts Transportation Building. Lots of interesting antennasporn in this town!

I hope i still adhere to the posting rules. What would be a good name? "Brick attenuation"?

I saw someone post about this online about a new antenna that is being tested . It looks like it is going to be put on a monopine in Concord, CA that is going to be outputting 7500.00000000-7900.00000000 MHz (400MG7D).
How is this going to be feasible in today's network? Wouldn't the range be closer than n77? The name of the antenna is not shown. Any thoughts? Application is here : [Application](https://apps.fcc.gov/oetcf/els/reports/GetApplicationInfo.cfm?id_file_num=1264-EX-CN-2025)

KSBN (1230 kHz, "News Radio KBNW") is a news/talk AM radio station licensed to serve Spokane, Washington. The station is currently owned by KSBN Radio, Inc.,consisting of the gun rights group Second Amendment Foundation and its affiliate Citizens Committee for the Right to Keep and Bear Arms. The station broadcasts at 1230 kHz with a power of 1,000 watts day and night, from a transmitter tower located on top of the Delaney Building in Downtown Spokane.