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Ten times the circumference of the dial is 12 feet (nearly 4 m), which allowed for great frequency resolution. The four standard sets of coils, A, B, C, and D, covered 14–30, 7–14.4, 3.5–7.3, and 1.7–4 MHz, respectively. Two other sets of coils, E and F, sold separately, covered 960–2,050 kHz and 480–960 kHz, respectively.
The first DX cluster software, PacketCluster [1] was realized by US radio amateur Dick Newell, AK1A in the late 1980s, and quickly became popular as a means of exchanging DX-related information. Before the internet became widely available, the nodes running the cluster software would connect via radio links at certain frequencies allocated ...
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 ...
Traffic passing by formal relay (via amateur radio) originates from the founding of the American Radio Relay League. The NTS as it exists today was first outlined by George Hart, W1NJM (died 24 March 2013) in "New National Traffic Plan: ARRL Maps New Traffic Organization for All Amateurs" as part of the September 1949 issue of QST. While ...
FCC amateur radio station license of Al Gross. In the United States, amateur radio licensing is governed by the Federal Communications Commission (FCC). Licenses to operate amateur stations for personal use are granted to individuals of any age once they demonstrate an understanding of both pertinent FCC regulations and knowledge of radio station operation and safety considerations.
The project received a grant from the Amateur Radio Digital Communications in 2021 [7] and 2022. [8] The protocol has been integrated into several hardware and software projects. [ citation needed ] In 2021, Kaczmarski received the ARRL Technical Innovation Award for developing an open-source digital radio communication protocol, leading to ...
The QN Signals are defined in ARRL document FSD-218 [3] and listed in the ARRL Operating Manual. [ 4 ] : 5–3 Although these codes are within the Aeronautical Code signals range (QAA–QNZ) and thus conflict with official international Q signals beginning with QN, the ARRL informally queried FCC's legal branch about the conflict.
HamSphere is a subscription-based internet service that simulates amateur radio communication using VoIP connections over the Internet. The simulator allows licensed radio amateurs and unlicensed enthusiasts to communicate with one another using a simulated ionosphere. It was designed by Kelly Lindman, a radio amateur with call sign 5B4AIT. [1]
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