Chapter 4

PDF DOWNLOAD: Chapter 4

HERTZIAN WAVES IN THE BASEMENT

  • The nature of radio waves
  • Mechanical and LC electrical oscillators
  • Antenna and transmission line theory
  • Crystal set components

LC tuner
PN junction diode detectors
P-type and N-type semiconductors
Detection of AM signals

  • Homebuilding the parts for a crystal set

The Jamestown diode
The Caribou headphone

  • Revisiting Crystal Sets in 2006

Learning to troubleshoot
Selective tuning

  • Recreating Hertz’s radio equipment

Transmitting and receiving as simply as possible
The 1880 ten-meter communicator

  • Proving that radio waves exist and aren’t just capacitive or magnetic coupling

Demonstrating standing waves to measure frequency

  • Building homebrew transistors

Bipolar transistors, PNP and NPN
Demonstrating power gain
The Boulder Rock Radio3