Impedance mismatches in a radio-frequency (RF) electrical transmission line cause power loss and reflected energy. Voltage standing wave ratio (VSWR) is a way to measure transmission line ...

Defined as the ratio of the maximum to the minimum voltage on a loss-less line. It tells the severity of standing waves in a transmission line. Expressed as 3.0:1, 2.0:1. Higher is the value of VSWR ...

Once again the ubiquitous USB TV tuner dongle has proved itself more than capable of doing far more than just receiving broadcast TV. Over on the RTL-SDR blog, there’s a tutorial covering the ...