Krypton
17-07-2011, 12:06 PM
Here is some info on the sirens that the ROC Posts were equipped with.
"All posts were equipmed with a hand cranked Secomak 447 Air Raid Siren. There was different tones for different warnings. The tone of the siren could be changed by twisting a clamp on the top of the handle and from winding the siren at a different speed. The siren was stored in a crate in the post and when not in use could fold down smaller.
Here it is packed down.
http://farm7.static.flickr.com/6022/5946104012_a00bf6968a_b.jpg (http://www.flickr.com/photos/kryptonuk/5946104012/)
Air Raid Siren (Packed) (http://www.flickr.com/photos/kryptonuk/5946104012/) by Krypton-UK (http://www.flickr.com/people/kryptonuk/), on Flickr
And here it is assembled.
http://farm7.static.flickr.com/6132/5946103150_28f9115704_b.jpg (http://www.flickr.com/photos/kryptonuk/5946103150/)
Air Raid Siren (Assembled) (http://www.flickr.com/photos/kryptonuk/5946103150/) by Krypton-UK (http://www.flickr.com/people/kryptonuk/), on Flickr
They really do produce a great sound!
"All posts were equipmed with a hand cranked Secomak 447 Air Raid Siren. There was different tones for different warnings. The tone of the siren could be changed by twisting a clamp on the top of the handle and from winding the siren at a different speed. The siren was stored in a crate in the post and when not in use could fold down smaller.
Here it is packed down.
http://farm7.static.flickr.com/6022/5946104012_a00bf6968a_b.jpg (http://www.flickr.com/photos/kryptonuk/5946104012/)
Air Raid Siren (Packed) (http://www.flickr.com/photos/kryptonuk/5946104012/) by Krypton-UK (http://www.flickr.com/people/kryptonuk/), on Flickr
And here it is assembled.
http://farm7.static.flickr.com/6132/5946103150_28f9115704_b.jpg (http://www.flickr.com/photos/kryptonuk/5946103150/)
Air Raid Siren (Assembled) (http://www.flickr.com/photos/kryptonuk/5946103150/) by Krypton-UK (http://www.flickr.com/people/kryptonuk/), on Flickr
They really do produce a great sound!