http://transmitters.tripod.com/begin.htm :
The CK111 that Cana Kit sent me is a two transistor kit. The kit does not have the first Audio stage, they drive the Oscillator directly from the Electret Microphone. An Amplifier/buffer stage feeds the antenna.

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My 6 year old daughter built the kit in about 45 minutes, under my supervision. It worked first time.

Squalylesque !