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This is an "end-of-transmission" sound module, that will fire off a burst of 5 sequential tones right after you let go of the microphone key. The circuit holds the radio in transmit mode and sends the 5 tones every time you un-key. There is of course a disable input that can be wired to a switch to turn off the beep.

EASY TO FOLLOW INSTALLATION INSTRUCTIONS

• ADJUSTMENTS FOR THE SPEED OF THE BEEPS
• TONE ADJUSTMENTS
• OUTPUT LEVEL

GET THAT BIG RADIO SOUND WITH THIS NOISE TOY