[quote name='Image7801' timestamp='1326944281' post='471920']
This is a bit off-topic, but since secondary sirens were mentioned here, I'll ask: Our Battalion vehicles have a secondary audible warning device on them that sounds like a low frequency tornado warning horn. It's like a wail that is very low in frequency. Any ideas?
[/quote]
Probably a Howler or Rumbler. If the siren is on wail, it would have about the same tone as a tornado siren.
This is a bit off-topic, but since secondary sirens were mentioned here, I'll ask: Our Battalion vehicles have a secondary audible warning device on them that sounds like a low frequency tornado warning horn. It's like a wail that is very low in frequency. Any ideas?
[/quote]
Probably a Howler or Rumbler. If the siren is on wail, it would have about the same tone as a tornado siren.