Archive for August, 2017

For many decades there was only one choice. Power supplies had heavy iron transformers to convert house current (110/120 volts AC) to the lower voltage required by many solid-state devices. As the demand for more and more current increased so did the weight of the transformer and the complexity of the circuitry making the DC. […]

  Choosing the right coax may seem complicated given the wide variety of cable types, their specs and costs. When we talk about coaxial cable loss, keep in mind that it affects transmitted energy as well as received signals. At 38 cents per foot, RG-8X is attractive, especially when putting up a new antenna system.   […]

Combination SWR Meters (sometimes called SWR Bridges) and RF Power meters (also called watt meters) are useful accessories in the ham shack. They provide information about transmitted and reflected power, and Standing Wave Ratio (SWR). Prices can range from about $80 for utility meters to over $500 for commercial grade meters. Selection Criteria: Maximum power […]