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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, Android: 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 ...
Free Software Foundation (FSF) – founded 1985; began as a development center for the GNU Project. It currently advocates for free software and against proprietary software and formats; and maintains and legally enforces the GNU General Public License. It also created the Free Software Definition.
Free and open-source software portal; This is a category of articles relating to web crawlers which can be freely used, copied, studied, modified, and redistributed by everyone that obtains a copy: "free software" or "open source software".
Of course, bot crawlers have been around for decades, either for good (to gather data for search engines that help people discover sites) or bad (malicious bots seeking to take down websites).
Horizon Hobby, LLC is an American multinational hobby-grade RC radio control (RC) model, model train manufacturer, and distributor. It was founded by Rick Stephens, Janet Ottmers, Debra Love, and Eric Meyers, [1] in July 1985, [2] and headquartered in Champaign, Illinois. [3] Horizon Hobby products are sold in more than 50 countries. [4]
An RC flight simulator is a computer program that allows pilots of radio-controlled aircraft to practice on a computer, without the risk and expense of damaging a real model. Besides the obvious use of training beginners, they are also used for practising new aerobatics, evaluating a model before buying it, and to allow flight practice when ...
Credits: $59.00 for 100 credits, $160.00 for 500 credit, or $289.00 for 1000 credits Pros. Great for married individuals. Free for female users “Traveling Man” feature when out of town. Cons ...
Many notable individuals in the 1960s through the 1990s and beyond created the landscape of modern RC modeling. These included many starting their own companies. The families of many of these individuals lost interest in continuing these businesses. The incoming supply of ARF planes from overseas made it hard to sell kits requiring assembly.