The Siren Board

Posted: **Sun Jul 06, 2008 12:54 pm**

ver tum wrote:This sounds like an older T-128. The older ones sound Alert at about 465 HZ, and the newer ones do it at about 560 HZ.

The manual(s) I've got say that both the T-128 and T-135 AC/DC perform at 500Hz.

Posted: **Mon Jul 07, 2008 10:54 pm**

ver tum wrote:This sounds like an older T-128. The older ones sound Alert at about 465 HZ, and the newer ones do it at about 560 HZ.

This is a newer T-128. Look at the decals on it.

T-128 in Alert and Attack in Springfield Township, Ohio