I hate to break it but Whelen is not even a siren .. It's an amplified speaker.. a siren is an airaphone which is what a rotor and stator are comprised of.

To each is own Matt ya know... I personally like the Model 5/7 style, Fedelcode to be exact.. i think its the all american looking siren since day 1.. I need to find someone still alive that personally was involved with Civil Defense siren installations or purchasing in the 1950's or 60's. i am curi...

link doesn't work. it asks for a password..?

Most people agree that the Thunderbolt is the best siren. It is!. Not really! Seems like only the people in this forum are t-bolt crazy.. It was actually Federals least selling siren. The Type 2,3,5,7 and SD10's were more dominant in the 1950's and 60's and the most popular selling. I have heard ma...

an F'in shame!! All those dots you see on the columbus map use to be Thunderbolts, SD10's and Model 5/7's.... They went and tore down most of them for those piece of crap Whelen speakers over the last 15 years... I have been in Columbus 1,000 times for the Noon test 1 Wed a month. and during tornado...

How did you get 3 phase power on a residential home? if you weren't so far away i'd come right over... I got 5T's SD10's Federal 7 HP's... all in 3 phase... we could have a ball!

That is the worst siren recording ever!!!! No wind up or wind down?? That could be any siren....totally incomplete.. horrible.. Who took the time to even bother to make an MP3 out of it... inconceivably horrendous!

The Code in FEDELCODE could have to do with a "code" of some sort.. However, I never saw a Fedelcode siren with breaks or rotor dampers yet.. I did see a Code Damper on a 1960 Federal 7 HP but this is after the Fedelcode era..

you dont want a lite rotor!! You want cast iron or heavy Aluminum..... Just paint it and it wont rust....
That's what's so classic about the 3, 5 , 7 and 10 horsepower Federals is their nice smooth and sometimes long wind down. the model 2's suck as the rotor is not heavy enough for a long coast..

Here is a vid of a 5 H.P. Federal with the old heavy rotors.. I know because I have have spun this rotor by hand many years ago when it was down for service... It takes about 5 mintues for this rotor to come to a complete stop. .. This siren was purchased around 1950 by the fire department. This is ...