Isnt that the point?
No what I meant is that I cannot see a damper fitting answer without hampering sound output when the sirens doing normal signals.
Cyclones had a damper for third signal. This is unless those ACA promotional VHSs aren't giving the full picture.MaineCivilDefense wrote: ↑Mon Oct 01, 2018 6:37 pmThat's how I thought the motor would've been braked. Some of the local fire departments near me had Cyclones with this feature.
IIRC Doerr made special motors intended for this yelping signal, that polarity revarsal thing was dropped when ACA started using Baldor motorsTravis wrote: ↑Mon Oct 01, 2018 2:33 pmThere once existed a recording of either an Allertor or Banshee doing this "yelp" signal. From what I understand this was accomplished by changing the polarity of the motor leads to electrically "brake" the motor. I don't know how many units were ordered with that capability, but it would seem this would damage the motor over time.
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