Below is an article The First Field Day
History-of-Field-Day
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Bakelite was patented on December 7, 1909. The creation of a synthetic plastic was revolutionary for its electrical non-conductivity and heat-resistant properties in electrical insulators, radio and telephone casings and such diverse products as kitchenware, jewelry, pipe stems, children’s toys, and firearms.
More at Wikipedia and more about Leo Baekeland
Sir Arthur C Clarke’s Wireless Communications magazine article… Click Here
Sir Arthur C Clarke …. Wikipedia
Allied radio, began in 1928 in Chicago Ill. Company History, Tandy Corporation Catalogs, All Allied Catalogs
SR-400 Production years were 1965-69
400 W PEP, 360 W CW (power input), 20-tube 80-10 Meter CW/SSB Transceiver “Cyclone”. Dual conversion receiver. Include VOX, PTT, AALC, Product detector, 1650 KHz crystal lattic filter, CW side-tone, crystal calibrator, combined R.F output & S-meter, noise blanker, RIT with a 3 KHz offset, driver tube is a 7558. External power supply.
The Russian Wood Pecker… Article on Planet Analog … Hear it on YouTube
A Great Article in “The Spectrum Monitor” February 2017, Click Here
The carbon pile did have more draw backs then just the RF burns, its audio was minimal and required a strong voice and obviously to be very close to the microphone…. Wikipedia …. History of the Microphone
Learn Code, practice code, even earn a certificate…. The ARRL sends code daily at different speeds for those wishing to earn a Code Proficiency Certificate For the ARRL schedule Click Here