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Category Archives: Amateur Radio
Radio and Optical Correlation of the Sun, Part 1
This project was conceived while I was a student (Astronomy) at Suffolk Community College / Vanderbilt Planetarium, circa early 1970s (studying under Dr. Lionel Daniels). Continue reading
Posted in Amateur Radio, Astronomy, Projects
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VLF Radio Astronomy
Flares such as the ones seen recently could become the norm soon, though, as our sun’s 11-year cycle of magnetic activity ramps up, scientists explained. The sun is just coming out of a lull, and scientists expect the next peak of activity in 2013. The current cycle, called Solar Cycle 24, began in 2008. Continue reading
Radio Astronomy – Thoughts and Lessons
At the age of 13, my parents gave me my first telescope; it was a Gilbert 3 inch reflector. That opened up the world of astronomy to me and at 16 I stumbled across a book titled “Radio Astronomy for Amateurs” by Frank Hyde (UK). This fit my other hobby of electronics and short wave listening. That was in 1964. Continue reading
Posted in Amateur Radio, Astronomy, Electronics, History of Science, Instrumentation, Physics, Space
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Update: Radio Astronomy in Education Conference
Updated information on the Radio Astronomy in Education Conference to be held in Tulsa, OK at Tulsa Community College, October 12-14, 2012. Continue reading
Posted in Amateur Radio, Astronomy, Community, Education, Instrumentation, Science Education, Space
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Conference: Radio Astronomy in Education
Tulsa Community College and Radio Astronomy Supplies / CFRARE, will host a first time weekend conference and workshop, featuring university Radio Astronomy and Physics speakers as well as guest speakers. Continue reading
Sferics Detector
“Sferics” (also spelled “spherics”) is short for atmospherics and refers to the crackling static in a radio produced by lightning. This receiver is tuned to an unused portion of the LF band and provides enough sensitivity to detect lightning activity for hundreds or even thousands of miles. Continue reading
Posted in Amateur Radio, Electronics, Meteorology, Physics, Projects
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Building A Mechanical Magic Eye
If you’re less than 50 years of age, and you don’t tinker with vintage radios or antique test equipment, you’re probably unfamiliar with the magic-eye tube. Pity, because you’ve missed out on seeing one of the neatest display devices ever produced. Continue reading
Posted in Amateur Radio, Electricity, Electronics, Invention
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Homebrew AM Micropower Transmitter
Although the schematic looks somewhat complex, the circuitry is easy to build and adjust for experimenters with a little “tweaking” experience. A simple output meter confirms proper signal level and checks antenna tuning while “on the air”. Add an audio mixer, tape recorder, and perhaps a CD player and have a near-professional micro-power station. Continue reading
Posted in Amateur Radio, Electronics
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Baby’s VLF Monitor
While staring at an otherwise useless 900 MHz baby monitor, it occurred to me that the circuit to operate its microphone is perfect for operating a transistor for a VLF receiver, something along the lines of the Computer Powered VLF receiver or the Super Tiny VLF Receiver. Continue reading
Posted in Amateur Radio, Electronics, Projects
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The Essential Breadboard
Fluency in basic electronics is increasingly useful for anyone getting into citizen science. These days electronic kits from Make, SparkFun, Adafruit, and many other vendors are everywhere. Ardino and Netduino has created an entire subgenre of electronics with active, enthusiastic communities. Continue reading
Posted in Amateur Radio, Amateur Science, Electronics, Invention, Makers and Making, Projects, Tools
Tagged bread board, breadboard
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