Posted on June 3, 2011
BIG TALKER is the name for a new 13.560mHz Shortwave Transmitter Project growing out of the Talking Pixie2 SW Transmitter project. Talking Pixie2 is a 2-transistor Part 15 device most recently covered in the blog “13.560 Back In The News.”
BIG TALKER is being designed as a 3-transistor part 15 device with particular features, including:
Original Pixie2 crystal oscillator;
Buffer stage with low impedance output and extra “punch” to excite the Class C final stage;
Class C Final Stage with transformer driven amplitude modulation;
LM 317 IC user operated power output control.
No “first version” yet exists, but with your help the BIG TALKER will be put together part by part.
Questions or suggestions welcome.
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