The designers found that a variable capacitor connected in-series with the antenna allowed it to be tuned to resonance at the higher frequency short wavelengths. Many antennas were too long to resonate at these shorter wavelengths. During the 1920s, amateur radio experimenters discovered that shorter wavelength signals would 'skip' off the Ionosphere and thus allowed very long distance communications using low transmitter power on the 'Short Wave' bands. A variable capacitor was often added in parallel with the loading coils to 'fine tune' their shorter antennas to the resonance of a much longer antenna.

These loading coils were adjustable coils of wire, or Inductors. It was impractical to have antennas that were thousands of feet long, so early designers found a way around this problem by using 'loading coils' to artificially lengthen their antennas. These extremely long wavelengths required exceptionally long antennas in order to be resonant. In the early days of wireless, very low frequency, very long wavelength signals were used. Morgan for his influence on the lives and careers of many people. This great little antenna tuner is named after Alfred P. Many young people who built Morgan's projects later became engineers and scientists. His book, THE BOY ELECTRICIAN, originally published in 1913 and many printings after, taught many a youngster how to make crystal radios, wireless transmitters, antennas, and all kinds of electrical experiments. His works were written for young people and the average man who was not an expert in mathematics and physics. Morgan was a prolific early writer of books on the subjects of electricity, wireless telegraphy, and radio. ********* ALL OF OUR FINE WOOD COMES FROM:īUILD A MORGAN ANTENNA TUNER KIT!! A GREAT ACCESSORY FOR CRYSTAL RADIOS, TUBE RADIOS, AND LOW POWER AMATEUR TRANSMITTERS!!Īlfred P.

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