The Siren Board

I was wondering what the range is on some of the older civil defense sirens by Federal Signal. Thanks

Thunderbolts 1000t: 125db@100ft 1000: 126db@100ft

No, like how many miles can they be heard for

thanks

bobcat418 wrote:I was wondering what the range is on some of the older civil defense sirens by Federal Signal. Thanks

Running a 5 HP dual tone Castle Castings siren in the UK (I don't know what would be the nearest FS equivalent siren), on the ground and not up a mast, during the winter and in a rural area, no hills it got heard 4 miles away by a friend of a friend in their garden. For that type of siren, it had a expected range of 1.25 miles and just over a third of a mile to be audible inside houses. The audibility range would be less or greater depending if it was situated in highly built up, suburban or rural area.

Thanks i also like Castle Castings .

Don't Panic! wrote:

bobcat418 wrote:I was wondering what the range is on some of the older civil defense sirens by Federal Signal. Thanks

Running a 5 HP dual tone Castle Castings siren in the UK (I don't know what would be the nearest FS equivalent siren), on the ground and not up a mast, during the winter and in a rural area, no hills it got heard 4 miles away by a friend of a friend in their garden. For that type of siren, it had a expected range of 1.25 miles and just over a third of a mile to be audible inside houses. The audibility range would be less or greater depending if it was situated in highly built up, suburban or rural area.

Our Federal xT22 sounds exactly like the UK Castle Castings/Carter siren

However, the Federal xT22s are vertically mounted & have 12 horns on top end & 10 horns on bottom end. 3T22s also have soleniod boxes on both ends to produce "coded" fire signals; the 2T22s dont have the solenoids

Another Castle Castings/Carter US equivalent are the Federal dual-headed siren & Sterling M-10

I live about eight miles away from a Model 5A fire siren, and I can hear it if the wind is just right and I'm outside. I tried to record it once, but it was so faint my camera wouldn't pick it up.

The xt22 is also a lot bigger siren than the castle castings.

holler wrote:The xt22 is also a lot bigger siren than the castle castings.

The two Castle Castings sirens I have are both 5 HP versions, there is a more powerful 7.5 HP version, which I believe would be equal to the main production run of xt22s. If I am correct, the early xt22s were even bigger at 10 HP!