https://upload.wikimedia.org/wikipedia/commons/9/99/Nothing,_Arizona.jpg Saw this on Kerbal Space Program Forums today, in the Forum Games section. https://forum.kerbalspaceprogram.com/index.php?/topic/182653-atlas/&page=9&tab=comments#comment-3573162 Is that a kind of an onmidirectional Wh...

https://upload.wikimedia.org/wikipedia/commons/9/99/Nothing,_Arizona.jpg Location : Nothing, AZ (Ghost town) Saw this on Kerbal Space Program Forums today, in the Forum Games section. https://forum.kerbalspaceprogram.com/index.php?/topic/182653-atlas/&page=9&tab=comments#comment-3573162 Is ...

Hello! I happened to spot this siren on top of the old Key Bank in Clyde, NY, and was curious if anyone could identify it. It almost looks like a FS model 500 DH-TT, but not quite. It has an eyebolt in the middle of it where it was mounted, and an antenna. Could be leftover from the Cold War, and/o...

I don't think something like a mechanical siren will have a beacon. This 'addon' seemingly common on electronic types.

But is there really a mechanical siren with a beacon on top, other than this?

[Fixed typo]

I've never quite understood the concept of replacing an electronic siren just because it's old. A controller upgrade essentially makes an old siren head new again if the old controllers are being a nuisance. 4008s are great sirens and relatively easy to keep running especially since it shares parts...

I've actually once thought of an LRAD serving as a 'siren'. Just one question; can it run with something like a legit electronic siren controller (e.g UltraVoice) without a tone generator (Or did the UV has a tone generator built in?)? EDIT : Sorry for misunderstanding. I thought this about a Long R...

https://www.airraidsirens.net/forums/download/file.php?id=3361 https://scontent-sjc3-1.xx.fbcdn.net/v/t1.0-9/44650389_10218322022381322_3272593310924931072_n.jpg?_nc_cat=108&_nc_ht=scontent-sjc3-1.xx&oh=fc7baa8391b7391587c24da8016aedce&oe=5CEA5491 I don't think this is ever a French pie...

Port ratios are shortly known as "Ports". Single tone sirens (Sirens with either 1 chopper & stator or 2 C&S (Why not abbreviate Chopper & Stator with this?) that sound the same pitch) also have port ratios. Example, a Federal Signal 2001-130 has 12 Ports. Yeah more ports would...

1. The half-house 'Model 3 is a Model 5/7 indeed, by judging the 'internal siren structure' looking like the one seen on the 5/7, and the fact it seems too large to be a 3. 2. The 'HOR Paint Can' siren seems like an ED Bullard, due to its trapezoidal-looking chopper-stator (As seen from my Nokia sid...

Aww, it'll be great if both sound, isn't it? Anyway, when will the 2001 test?