Posted: Mon Aug 03, 2009 8:52 am
This is true. Thanks!ginbot86 wrote:In the RCM, there's an autotransformer (a transformer with various taps on it) that you can change the chopper voltage. That's the term Chopper Level x comes from.
Discussion of Outdoor Warning Systems
https://www.airraidsirens.net/forums/
This is true. Thanks!ginbot86 wrote:In the RCM, there's an autotransformer (a transformer with various taps on it) that you can change the chopper voltage. That's the term Chopper Level x comes from.
Thunderbolts have a autotransformer that has 7 possible outputs that increase in voltage from 120 to 240 volts. Each one steps up the voltage 20 volts. Since a higher voltage will make the chopper spin faster, the pitch will also get higherJustin wrote:Ok, maybe I'm getting things mixed up but as far as I was aware chopper speed could not be set.tboltkid520 wrote:I believe the chopper on the Thunderbolt can be set to different levels or "speeds". Listening to the recording closely, I hear the blower shortly after the siren starts up, not only that but the echo carries very far, a Thunderbolt without the blower is extremely quiet.
Example of another high-pitched Thunderbolt 1000T:
http://www.youtube.com/watch?v=5sTZTm3hFz8
This siren is still operational incase of emergency, though, correct?kevinreturns2 wrote:FFEMT134 wrote:I take it they don't have it programmed to activate with the Tuesday noon Mon Valley all-call test then?I cant record it due to they dont test it
Sadly, Not Anymore.
Though The DMFT Tone Is The Same \:l