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Views and Reviews
- ChatGPT designs a Fan DiPole
- Amateur Radio Investments: A Lifeline When All Other Alert Systems Fail
- 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
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ChatGPT designs a Fan DiPole
I asked ChatGPT the following: Design a fan dipole antenna that covers 80, 40,20 and 10 meter bands. Give all the specs and measurements. ChatGPT said: Designing a multi-band dipole antenna to cover the 80, 40, 20, and 10-meter bands … Continue reading
Amateur Radio Investments: A Lifeline When All Other Alert Systems Fail
In times of crisis, when communication systems falter and disaster strikes unexpectedly, having a reliable means of communication can mean the difference between life and death. The recent events in Maui have once again highlighted the critical role that amateur … Continue reading
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Tagged Amateur Radio Investments, Lifeline, maui disaster, Other Alert Systems Fail
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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, Uncategorized
Tagged between, difference, HF, uhf, vhf
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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, Uncategorized
Tagged Antenna, basics, db
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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
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
Posted in Propagation, Uncategorized
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
Posted in Uncategorized, Various
Tagged car, effects, electronics, Radio, transceiver, VE2XIP
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