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- Amateur Radio Investments: A Lifeline When All Other Alert Systems Fail
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- 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
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Category Archives: Antennas
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
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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
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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
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
Understanding directional antennas
I stumbled on a great video on the internet which shows exactly how a Yagi directional antenna works. This video was produced by MakeMagasine.com and presented by Diana Eng. In short order, it demonstrate how a dipole antenna transfers energy … Continue reading
The 80-40-20-10 meter fan-dipole project
This is the Alpha-Delta DX LB Plus I want to replace. At the beginning of summer 2012, I designed and built a 3 band fan dipole. I was so happy with the results that I decided to try the same … Continue reading
The 20-17-15 meter fan-dipole project
For over a year, I’ve been using commercially bought antennas, one of which is a 160m-10m multi-band Alpha-Delta DX LC Plus. During that period of time, I had the chance to study this multi-band antenna and began figuring how it … Continue reading
SWR analysis of a Alpha Delta DX LB Plus antenna
This article will show you SWR analysis of an Alpha-Delta DX LB Plus antenna installed 40 feet off the ground in an inverted-V configuration. The antenna ends are approximately 15 feet from the ground. I explained in details the tools … Continue reading
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Tagged Alpha-Delta, analysis, Antenna, SWR, VE2XIP
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SWR analysis of a G5RV antenna
For the past few months, I’ve been tinkering with the idea of improving my current antenna situation, which includes a full length 102′ G5RV (10m-80m) installed horizontally at approximately 42 feet. In order to proper install and tune new antennas, … Continue reading
G5RV vs Alpha Delta DX LB Plus
For the past year, I’ve been using the legendary G5RV HF antenna (Full length, 51 feet each side, 29 feet of balanced 300 Ohms twin-lead, 18 gauge copper wire) and the Alpha Delta DX LB Plus multi-band fan dipole antenna (100 feet, … Continue reading