Model L wrote: ↑

Thu Nov 04, 2021 2:46 am

it took a while to get going there. wonder whats wrong with it?

I'd say it's probably a combination of age, environmental conditions, and electronic components starting to drift out of spec.

Whelen WPS-4003/4004 & WPS-2900 single tone synth BrSvNGGPe5c Whelen WPS-4004 & WPS-2900 dual-tone synth 2hK1nD_XAos For the single tone synth, I used the no bias square wave with a 320 Hz to 460 Hz sweep and 300 Hz high-bypass with 2000 Hz low-bypass. For the dual-tone synth, I used the sam...

That is indeed a Fedelcode Model 20. Next time you're there, try to take the shroud off of the siren and get a better shot of the internals if possible! That doesn't look completely like a Fedelcode though.... https://i.ytimg.com/vi/f4jD6o0M_xA/maxresdefault.jpg https://i.ytimg.com/vi/6KtIxIx9Weg/m...

Good to see another GA enthusiast on here! Would I be correct in assuming that's in Athens? Fantastic! I actually just moved here recently (in September) with my parents, all the way from Ardmore, Oklahoma. I'll definitely miss hearing their system of ASC T-128 sirens, but I'm looking forward to do...

This siren has definitely seen some better days. https://doc-04-74-mymaps.googleusercontent.com/untrusted/hostedimage/34inlvp2nevp569hdijl540npg/ut256rg4s7m7v95rhmom5li9ks/1693180638500/52Wp9abhWOGz8Jaedy6FE6fOKcRiq0--/08613494526066885668/5ACnmet41t9ymDnyh1llVKIYNT2XAqY5RSRplT0baIq42fDl-k42-viexKQ...

WOW! Oklahoma to Georgia?! That's definitely one far move! Interesting how the tower is painted in 2 different colors. The 130 also seems to be mounted on a bit of blower pipe, but that could be something else. Assuming you are looking at the part directly under the rotator, I'm pretty sure it's no...

Last pictures taken before I moved from Ardmore, OK to Watkinsville, GA. According to an old post about Ardmore's RM-130s, this particular siren replaced a roof-mounted Thunderbolt. In fact, if you look closely, you will see the lower half of the tower mount is colored yellow. The only clue that sh...

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In the US, the "big 3" siren manufacturers are ASC (American Signal), Federal Signal, and Whelen Engineering. There is another somewhat smaller corporation known as ATI, or "Acoustic Technologies Incorporated", that makes sirens of questionable quality and reliability. I myself d...

Somewhat off-topic, but is there any way I can change my username? It's the name that shows up in green.
I want to change it to something like "Sirens Galore", but I can't find any way to change it without having to create an entirely new account.