Category: Antennas

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PL-259 Soldering

Do you solder the coaxial shield to the connector body when installing a PL-259 plug? What are those holes really for? I’ve been installing PL-259 plugs onto coaxial cable since I was about 16,...

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Alpha Delta Switch Arc-Plugs

I recently bought a couple of Alpha Delta coaxial switches, and noticed they come with a built-in surge arrester which can be replaced after a surge. They call them “Arc-Plugs”. These are on sale...

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Why 50 ohms?

Coaxial cables, antennas, amplifier inputs and outputs, typically have either a 50 ohm or 75 ohm characteristic impedance. Why? It all comes down to the characteristic impedance value for maximum power transfer being 30...

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Antenna Field Regions

Antenna radiation is made up of several different regions. Read on. The transitions between these regions are not distinct and changes between them are gradual. The reactive near-field region is the region close to...

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