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Views and Reviews
- What is SDR (Software Defined Radio)
- Difference between HF, VHF and UHF
- Antenna dB – The basics
- Isotropic antenna
- Best frequencies to use at night
- Magnetic storms for beginners
- RCAF’s Antenna fundamentals
- Radio transceiver effects on car electronics
- Static electricity and Amateur Radio antennas
- Understanding Antenna Gain in a Few Minutes
- How to build a foxhole radio receiver
- Deliberate interference and radio wars
- Building an efficient HF station
- Where do northern lights come from
- Where on earth are all the Amateur-Radio operators
- Understanding directional antennas
- The 80-40-20-10 meter fan-dipole project
- Beginner’s guide to HF radio propagation
- The 20-17-15 meter fan-dipole project
- SWR analysis of a Alpha Delta DX LB Plus antenna
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Author Archives: Editor
What is SDR (Software Defined Radio)
Software-defined radio (SDR) is a communication system that uses software to replace traditional hardware components, such as mixers, amplifiers, filters, and modulators, which are commonly used in traditional radio systems. In SDR, the signal processing is carried out in software, … Continue reading
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Tagged WebSDR, Wikiradio
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Difference between HF, VHF and UHF
HF, VHF, and UHF are different frequency ranges used in radio communications. Each range has unique characteristics that make it suitable for different types of applications. HF stands for High Frequency, which covers the frequency range from 3 to 30 … Continue reading
Posted in Antennas
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Antenna dB – The basics
Antenna dB (decibels) are a unit of measure used to describe the gain, or amplification, of an antenna compared to a reference antenna. Decibels are a logarithmic scale that expresses the ratio of two power levels, and they are commonly … Continue reading
Posted in Antennas
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Isotropic antenna
An isotropic antenna is a theoretical antenna that radiates equally in all directions, with a radiation pattern that is completely symmetric around its axis. It is often used as a reference antenna in radio frequency (RF) engineering to compare the … Continue reading
Posted in Antennas
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Best frequencies to use at night
The best frequency to use for long distance radio communication at night depends on several factors, including the location of the transmitter and receiver, atmospheric conditions, and the time of year. Generally, for long-distance radio communication at night, the lower … Continue reading
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Tagged at, Best, Best frequencies to use at night, frequencies, night, to, use
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Magnetic storms for beginners
I’ve always been a fan of the television series called “Nova” on PBS (Public Broadcasting Service) and I found a great video clip discussing magnetic storms and its effect on our planet. It is with unequivocal certainty that any significant … Continue reading
RCAF’s Antenna fundamentals
In 1959, the RCAF – Royal Canadian Air Force – made a serie of interesting training video clips on Antenna Fundamentals, with the help from the Canadian National Film Board. I love these old training documents, they hold a gold mine of … Continue reading
Radio transceiver effects on car electronics
When I first began experimenting with VHF/UHF radios, I quickly discovered the unwanted effects of radio signals on electronics in my environment. A simple 10 watts transmission in the 2m or 0.70 cm bands would activate motion detection lights in … Continue reading
Static electricity and Amateur Radio antennas
Nothing can induce more stress into an Amateur Radio operator than an approaching lightning spewing storm. Most of us experienced a sense of urgency to disconnect our cable feeds upon hearing the growling of a lightning storm approaching. However, electrical … Continue reading
Understanding Antenna Gain in a Few Minutes
I often enjoy reading on a topic and then try to summarize it in a short article on this website. But today isn’t the case. Sometimes a simple instruction video does a much better job than all the words I … Continue reading