Introduction
Amateur Radio has always developed hand in hand with electronics and radio technology. In this area, we provide some introduction and a lot of links to reference information drawn from ARRL publications and other sources.
Browse selected topics below or choose from the menu of available topics at the left.
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AC Power Filter
Control of AC power line noise and surges is vital for today's radios and computers. (Polyphaser PLDO-120) -
RF Amplifier
The ARRL Handbook described the HB-70-2 amplifier that Allen Poland, Jr, K8AXW, decided to build for himself. -
Parabolic Dish Antenna
Peter, G3LTF, changes feeds on his 6-m polar-mounted dish. -
Station Design
Andrew Genau, KC2GOW, seems to have captured the idea of station building! -
VHF/UHF Rovers
W9FZ and N9REP meet for an "eyeball QSO" between contest sessions.
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Safety
Make sure you're as safe as you can be while putting up your rig. Learn More
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Circuit Construction
Make sure you're building your circuits the right way we offer some good advice. Learn More
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Modes and Systems
Find out about the different modes and systems available for Amateur Radio. Learn More
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RF and AF Filters
Filtering may be and effective way of reducing radio interference. Learn More
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Propagation of RF Signals
How signals travel beyond line of sight. Learn More
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Servicing Equipment
An important part of amateur radio is the ability to troubleshoot and fix station equiment when needed. Learn More
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Technical Specialties
Vintage, AM,SSTV, DFing, LF, and ATV. Learn More
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DSP-Digital Signal Processing
Learn how radios use DSP instead of analog circuitry. Learn More