Smooth varactor diode tuning allows any 2mhz portion of the 4-11mhz frequency range. Uses 9v battery. Amplification of up to 7000 times the input power at 10mhz. Perfect for your QRP transmitter or signal generator. This kit will give you 10 times power gain.
Kit includes expensive pre-tested RF power transistor.
Ideal for advanced builder who likes to modify and experiment. Turn your hallway or porch lights on at a whistle or turn on the garage lights when you beep your horn. Kit requires 6-12vdc and drives up to 100ma load. This siren kit exactly duplicates the upward and downward pitched wail of a U.S. police siren. Runs on 6-12vdc and provides a loud 5 watts.