Glassport,PA Thunderbolt 1000T

[Justin]

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.

This is true. Thanks!

[Thunderboltlover]

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

Ok, maybe I'm getting things mixed up but as far as I was aware chopper speed could not be set.

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 higher

[Thunderboltlover]

I cant record it due to they dont test it

I take it they don't have it programmed to activate with the Tuesday noon Mon Valley all-call test then?

Sadly, Not Anymore.
Though The DMFT Tone Is The Same \:l

This siren is still operational incase of emergency, though, correct?

[mr.sirenman]

I live in PA and I've seen that one tested before