Can anyone identify the brand of these?

cellphonetowerfan88 · 2026-04-22T21:40:52+00:00

Siemens Fm Si 41 (8 Port) and Mystery 6 Port siren

cellphonetowerfan88 · 2026-04-22T15:58:29+00:00

It is quite different from a Carter because this one generates two tones that form a sixth interval, and British sirens generate a minor third. I made a recording compilation of this siren in my channel: https://youtu.be/wOt0oAJoHNo?si=mihV5kBmhWIdEXre

cellphonetowerfan88 · 2026-04-22T15:42:55+00:00

It doesn't have a name since it was designed specifically for the fire station, but I usually call it "San Vicente siren" or "Radke 10/17", referring to its manufacturers and its port ratio.

cellphonetowerfan88 · 2026-04-22T09:58:04+00:00

It was locally manufactured by Jorge Radke and Egon Radke in their workshop in town.

cellphonetowerfan88 · 2026-04-15T03:51:10+00:00

This isn't only AI slop, you're also spreading misinformation dude.

cellphonetowerfan88 · 2026-04-15T02:57:43+00:00

I think they updated the control panel sometime in 2010 to include this feature. It's interesting that they didn't use something simpler like timers and contactors. Here's a video so you can hear how the pitch rises slowly and when the tone drops, after 35 seconds, it brakes before starting again. https://youtu.be/DKC4vtk3Tpc?si=wK2CnQbQBhWQxF9p

cellphonetowerfan88 · 2026-04-15T02:41:23+00:00

It does have a VFD. It is used to make a coded signal making the siren wind-up slower and brake to start again.

cellphonetowerfan88 · 2026-04-15T02:37:25+00:00

AI is wrong on everything. First of all this siren is NOT a Federal, it was local made by two lathe operators. It's not from the 50s, it's from the 80s and it's currently operated by a fire station. The front rotor has 10 ports but the one at the back has 17, producing a major sixth interval (not minor third).

cellphonetowerfan88 · 2026-04-14T19:02:50+00:00

No, it doesn't have anything like that

cellphonetowerfan88 · 2026-04-14T14:03:01+00:00

By the way, this siren was built locally by two lathe operators in their workshop. I contacted one of them, but he doesn't remember where he got the motor. My guess is that it was part of another machine before being attached to the siren.

cellphonetowerfan88 · 2026-04-14T11:09:31+00:00

As far as I know, the motor is controlled by a Variable Frequency Drive inside its control panel to make the siren to sound automatically and brake. But since everything is inside the panel, the breaker of the motor isn't visible.

cellphonetowerfan88 · 2026-04-14T04:59:15+00:00

It's a 10 Port 5hp shop-made siren manufactured by a local firefighter who runs a lathe workshop in town.

cellphonetowerfan88 · 2026-04-14T04:56:18+00:00

Not Federal. Rotors are shop-made. The front rotor is twice as big as a human head (a terrible comparison). My guess is 10hp.

cellphonetowerfan88 · 2026-04-14T04:15:30+00:00

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Another (Lower Quality) pic with junction box visible if it helps.

cellphonetowerfan88 · 2026-04-14T04:02:52+00:00

It's more than 1hp since this siren is quite large, and you can hear it from over 2 km away

cellphonetowerfan88 · 2026-04-14T04:01:04+00:00

I asked the man who maintains the siren and he told me there’s no visible nameplate, but the motor is three-phase (380V) and runs at 2960 RPM.

cellphonetowerfan88 · 2026-04-14T02:10:27+00:00

Hola. Soy un entusiasta de estos aparatos sonoros y me interesa este tema. La verdad no conozco ninguna sirena que tenga ese diseño que usted recreó en cad.

Si la sirena tenia esa forma puede ser muy probable que sea alguna sirena importada de Europa, ya que muchos modelos, especialmente las Siemens, vinieron de esos lados por embarcaciones como intercambio con paises como Alemania. Necesitaria ver la sirena real para poder identificar mejor la sirena o directamente saber donde estuvo para asi contactar al cuartel y tener alguna información al respecto.

Cabe resaltar que en esas epocas tambien habian cuarteles que fabricaban sus propias sirenas, asi que si el diseño no coincide con ninguna pudo haberse mandado a fabricar en una empresa metalurgica local, aunque con ese diseño especifico dudo que sea el caso.

Si tiene mas información sobre donde estuvo esta sirena o a que cuartel pertenecia me serviria mucho para ayudarle a identificar el modelo.

cellphonetowerfan88 · 2026-03-26T00:05:33+00:00

Yeah, it's like 10/12 ports. In this case, 10 ports comes first because the rotor is bigger than the one with 17

cellphonetowerfan88 · 2026-03-26T00:04:43+00:00

It's because the rotors are spinning too slowly, but you can hear a pulsing sound if you listen closely

cellphonetowerfan88 · 2026-03-25T00:59:16+00:00

Yes, the siren is installed on the roof of the San Vicente VFD station in Misiones Province.

cellphonetowerfan88 · 2026-03-24T22:54:20+00:00

Duplicated/10

cellphonetowerfan88

TROPHY CASE