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For antenna analysis, antenna placement, windscreen antennas, microstrip circuits, waveguide structures, radomes, EMI, cable coupling, FSS, metamaterials, periodic structures, RFID Elmer FEM: open source Yes Yes Yes Yes Yes manual, or can import other mesh formats FEM
www.rigexpert.com Rig Expert Ukraine Ltd is a manufacturer of ham and PMR Two-way radio RF antenna analysis [ 1 ] and antenna tuning [ 2 ] equipment. The company was founded in 2003 and is headquartered in Kyiv , Ukraine .
software-defined radio and signal processing SDRangel: GPL: Windows, macOS, Linux: software-defined radio SDR# Freeware Windows software-defined radio receiver SDR++: GPL: Windows, macOS, Linux: software-defined radio receiver WSJT: GPL: Windows, Unix, Unix-like: weak signal communication, modem for FT-8, FT-4, JT-65, and WSPR WSJT-Z: GNU GPLv3 ...
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.
The regulars began assembling in the predawn at the McDonald’s on East Plank Road in Altoona, a Pennsylvania city of about 42,000 just off I-95 in Blair County.
Fldigi (short for Fast light digital) [4] is a free and open-source program which allows an ordinary computer's sound card to be used as a simple two-way data modem.The software is mostly used by amateur radio operators who connect the microphone and headphone connections of an amateur radio SSB or FM transceiver to the computer's headphone and microphone connections, respectively.
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The far-field range was the original antenna measurement technique, and the simplest; it consists of placing the antenna under test (AUT) a long distance away from the instrumentation antenna. Generally, the far-field distance or Fraunhofer distance , D F r n h , {\displaystyle \ D_{\mathsf {Frnh}}\ ,} is considered to be