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2. 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.

3. WSPR (amateur radio software) - Wikipedia

   en.wikipedia.org/wiki/WSPR_(amateur_radio_software)

   An Agilent Modulation Domain Analyzer 53310A showing the narrow band 4-FSK signal produced by a Raspberry Pi. Occupied bandwidth is about 6 Hz; Synchronization is via a 162 bit pseudo-random sync vector. Each channel symbol conveys one sync bit (LSB) and one data bit (MSB). Duration of transmission is 162 × 8192 ⁄ 12000 = 110.6 s.

4. Antenna tuner - Wikipedia

   en.wikipedia.org/wiki/Antenna_tuner

   An antenna tuner, a matchbox, transmatch, antenna tuning unit (ATU), antenna coupler, or feedline coupler is a device connected between a radio transmitter or receiver and its antenna to improve power transfer between them by matching the impedance of the radio to the antenna's feedline. Antenna tuners are particularly important for use with ...

5. RigExpert - Wikipedia

   en.wikipedia.org/wiki/RigExpert

   Antenna analyzer, Antenna tuner: Website: www.rigexpert.com: Rig Expert Ukraine Ltd is a manufacturer of ham and PMR Two-way radio RF antenna analysis [1] ...

6. MFJ Enterprises - Wikipedia

   en.wikipedia.org/wiki/MFJ_Enterprises

   MFJ Enterprises was an American manufacturer specializing in a wide range of products for the amateur radio market. The company focuses on station accessories, including antenna tuners and antenna switching equipment. MFJ was founded in 1972 by Martin F. Jue. As of 2014, the company was recognized as the largest producer of amateur radio ...

7. 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.