In the vast ecosystem of radio frequency (RF) systems, no component is more fundamental—or more varied—than the antenna. While amplifiers boost signals, filters select frequencies, and cables guide them, it is the antenna that performs the essential transformation: converting guided electromagnetic waves traveling along a transmission line into free-space waves that radia...
The UHF connector—known to most practitioners as the PL-259 (male) and SO-239 (female)—is one of the oldest and most recognizable RF interfaces still in everyday use. Despite the name, it is not a true UHF connector in the modern sense. It performs best below 300 MHz and becomes increasingly lossy and reflective as frequency rises. Yet its rugged threaded coupling, low co...