Neat map! I like the concept of using pins, however. This is just a suggestion: use regular pins instead of icons. Once you start hitting the 10K+ mark, it could start lagging quite a bit. Also don't get confused with Fire Radio, they use similar equipment to the stuff used on the Slave/Substations ...

Hello all, this is my for Yamagata Prefecture! It contains almost every location of the Outdoor Loudspeaker Child/Substations (Bosai Musen referred to by most of the people here on ARS) in the prefecture. Please let me know if I'm missing anything on this map by using the request form or giving me a...

Substation/Bosai Musen in Yuza Town, Yamagata. Mounted on the truss tower and is paired with a Seikosha SPF siren. This town has a lot of these scattered around.

https://maps.app.goo.gl/Aaxk78fnFFU3NZQDA

Depending on the municipality, fire department and contractor, they can be kept for display, parts for other sirens, auctioned off or scrapped entirely.

Hello everyone, this is my map of Suginami City/Ward Disaster Prevention Administrative Radio Outdoor Loudspeaker locations. Please feel free to tell me if I'm missing any locations or if you have suggestions for this map. https://www.google.com/maps/d/u/0/edit?mid=1oYdEXRopKP0nHz0ynbow6REcVP9jaPw&a...

That is a Cooper WAVES HPSA siren, that seems to be running FS UltraVoice controls. Great Find!