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2. SWR meter - Wikipedia

   en.wikipedia.org/wiki/SWR_meter

   An SWR meter does not measure the actual impedance of a load (the resistance and reactance), but only the mismatch ratio. To measure the actual impedance requires an antenna analyzer or other similar RF measuring device. For accurate readings, the SWR meter itself must also match the line's impedance (typically 50 or 75 Ohms).

3. Antenna analyzer - Wikipedia

   en.wikipedia.org/wiki/Antenna_analyzer

   An antenna analyzer measuring SWR and complex impedance of a dummy load. MFJ-269, MFJ Enterprises Inc. An antenna analyzer or in British aerial analyser (also known as a noise bridge, RX bridge, SWR analyzer, or RF analyzer) is a device used for measuring the input impedance of antenna systems in radio electronics applications.

4. List of amateur radio software - Wikipedia

   en.wikipedia.org/wiki/List_of_amateur_radio_software

   MacLoggerDX is a full-featured amateur radio contact logger for macOS with Transceiver control, Rotor control, Callbook lookup, QSL handling (Hardcopy / LoTW / eQSL / Club Log), DX Cluster and spotting, and basic contesting support.

5. Standing wave ratio - Wikipedia

   en.wikipedia.org/wiki/Standing_wave_ratio

   In radio engineering and telecommunications, standing wave ratio (SWR) is a measure of impedance matching of loads to the characteristic impedance of a transmission line or waveguide. Impedance mismatches result in standing waves along the transmission line, and SWR is defined as the ratio of the partial standing wave 's amplitude at an ...

6. List of amateur radio transceivers - Wikipedia

   en.wikipedia.org/wiki/List_of_amateur_radio...

   [24] [25] [26] Introduced in the year 2000, the radio was known for its "all-in-one" functionality. It can transmit on all amateur radio bands between 160 meters and 70 centimeters, with the exception of the 1.25 meters band, and the "X" model also has built-in 23 centimeters band capability option. Kenwood discontinued production of the TS ...

7. These Are the Best Emergency Radios to Keep You Updated ...

   www.aol.com/lifestyle/best-emergency-radios-keep...

   The NOAA broadcasts weather warnings and forecasts as the National Weather Radio (NWR) across seven public radio frequencies: 62.400 megahertz, 162.425 MHz, 162.450 MHz, 162.475 MHz, 162.500 MHz ...

8. Antenna tuner - Wikipedia

   en.wikipedia.org/wiki/Antenna_tuner

   Cross-needle SWR meter on antenna tuner. It is a common misconception that a high standing wave ratio (SWR) per se causes loss. [3] A well-adjusted ATU feeding an antenna through a low-loss line may have only a small percentage of additional loss compared with an intrinsically matched antenna, even with a high SWR (4:1, for example). [21]

9. Antenna feed - Wikipedia

   en.wikipedia.org/wiki/Antenna_feed

   To adjust the matching network the simplest instrument to measure the degree of mismatch between the feedline and the antenna is called an SWR meter (standing wave ratio meter), which reports the standing wave ratio (SWR) on the line: The ratio of the adjacent maximum and minimum voltage or current on the line. A ratio of 1:1 indicates an ...