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