Tornado Siren Activation Radio Receiver Federal Signal ARCH Radio/Decoder Start Price USD 145.00 Current Price USD 145.00 Time Left - Bid Count 0 Buy It Now Price - Reserve Price - Start Time Monday, December 01, 2008 End Time Thursday, December 11, 2008 Location Chandler, AZ See more about 'Tornado Siren Activation Radio Receiver' Description  This is an analog radio receiver/decoder that was used to activate a Federal Signal Thunderbolt civil defense tornado siren. The radio operates in the 150.8MHz to 174MHz band, and the decoders are set up with 1 second, 3 second timing.  The radio was functional when it was removed from service and is transistorized/solid-state.  I have four radios available.  The listed price is for one radio.  Included are the radio/decoder and associated signal and power wires.  Each radio is tuned to a different frequency and the decode tones are random. I can recommend a radio company that can change the channel of this radio to meet your exact requirements.  Tones are set for attack, alert, and cancel.  This receiver is part of the Federal Signal Siratrol system.  Place a Bid!