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by CDV777-1
Thu Jan 04, 2007 1:32 am
Forum: Main Outdoor Warning Sirens Board
Topic: Have YOU been beside a siren when it went off?
Replies: 35
Views: 22193

Yes I have.
by CDV777-1
Wed Jan 03, 2007 5:46 am
Forum: Main Outdoor Warning Sirens Board
Topic: Thunderbolt problem
Replies: 40
Views: 23584

Sounds weak= means that it does not sound normal and it is not running it's full sound output range Still not an answer that would lead to anyone not hearing the siren in person to make any guess at all as to what could be wrong with it. With a Thunderbolt that could be anything from the chopper ru...
by CDV777-1
Wed Jan 03, 2007 4:56 am
Forum: Main Outdoor Warning Sirens Board
Topic: Mini Thunderbolt Video With Sound............FINALLY!!!!!!
Replies: 31
Views: 21612

douro20 I have an idea on how to control the chopper speed better. You can build a motor controller based around a PIC microcontroller and control the motor speed using pulse-width modulation. I don't have any problem with the chopper speed now. Nelso90 B: He is definitely not making more of these!...
by CDV777-1
Wed Jan 03, 2007 4:37 am
Forum: Main Outdoor Warning Sirens Board
Topic: Do Thunderbolts come in different sizes?
Replies: 2
Views: 2968

No, they don't.
The only difference is the rotator boxes.
The 1003 has a taller rotator box than the
1000 and 1000T. The 1000 series be has
a bit of different shaped rotator box but
it's pretty close to the original size.
by CDV777-1
Tue Jan 02, 2007 3:53 pm
Forum: Main Outdoor Warning Sirens Board
Topic: Thunder Bolt 3 Phase blower motors
Replies: 6
Views: 4272

Yes. 2 of the T-bolts I had had that type of motor.
They were both mid-1970s vintage sirens.
by CDV777-1
Tue Jan 02, 2007 2:49 am
Forum: Main Outdoor Warning Sirens Board
Topic: Mini Thunderbolt Video With Sound............FINALLY!!!!!!
Replies: 31
Views: 21612

Mini Thunderbolt Video With Sound............FINALLY!!!!!!

I've had some problems with my board account lately but now I'm back with a new username. Anyway..... I finally got a video with sound of the Mini Thunderbolt. I took it with a little kid's video camera my son got for Christmas. I was surprised at the sound quality when I played the video the first ...

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