TRAINING : Amateur Radio Practices - Part I

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TRAINING : Amateur Radio Practices - Part I

Station operation and set up

Modern HF transceivers have features that make operating a breeze, but to use them properly, you have to know when to use them and how to use them. The notch filter is a good example. The notch filter actually introduces a notch into a receiver’s passband to block interfering signals.

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TRAINING : Radio Wave Propagation→

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TRAINING : Radio Wave Propagation

Sunspots and solar radiation, ionospheric disturbances, propagation forecasting, and indices

Amateur radio communications are subject to the whims of nature. Many different phenomena affect the propagation of signals, and it behooves you to know a little something about the phenomena. Doing so will make you a more effective amateur radio communicator.

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TRAINING : Antennas and Feed Lines, Part II→

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TRAINING : Antennas and Feed Lines, Part II

Directional antennas

To make their signals more effective, some amateurs use directional antennas. Directional antennas, such as Yagis and quads, direct most of the power output in a particular direction, making the signal seem more powerful. They are also more sensitive to receiving signals from a particular direction. This feature makes them useful for reducing interference. All you have to do is turn the antenna away from the source of interference.

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