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coyoteunknown
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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.
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Alasiren1977
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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.
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