Federal Signal 2001-SRNB Siren Test Wyoming, Ohio 

No, the older SRNBs have the smaller fs logo on the front. You must be thinking of it's predecessor the 2001-SRN. They had the smaller logo and they just changed the rotator box when they made it into the SRNB. Then they decided later in production that they wanted to make the logo bigger on the SRNB. So then in 2006 they changed the amplifier to make the siren produce 2 decibles louder and they renamed it the 2001-130. There, I just told you the SRNB story. P.s, 4 of them will be going off today at noon in where I live.

nice video, interesting growl. I was able to record the attack signal of the sirens by work from my i-Pod which I'll post later.

Its an SRNB, because it has a square rotator box. SRNs have rectangular rotator boxes

This is a 2001 SRN, It has the Small FS Logo, if it was a SRNB it would have the Large FS Logo. But you could be right, i am just going by my knowlage, my town has mostly SRN's and that is the size of the Logo, and we have 2 SRNB's and the Logos are bigger than that.

That is messed up. For one fast wail should be longer than that(Wind downs) and what is with the rotator stopping on windowns in the attack in the end?

Hmmm attack signal was odd, lol