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License Free, legal, low-power radio broadcasting

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Carl Blare

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@carl-blare

Active 3 years, 10 months ago
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Big Talker

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.


Quartz Crystals Get your Quartz Crystals, Including 13.56 MHz for Short Wave and 1.0 MHz for Medium Wave – click here for a full selection!

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