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An amateur radio net, or simply ham net, is an "on-the-air" gathering of amateur radio operators.Most nets convene on a regular schedule and specific frequency, and are organized for a particular purpose, such as relaying messages, discussing a common topic of interest, in severe weather (for example, during a Skywarn activation), emergencies, or simply as a regular gathering of friends for ...
Entire amateur radio band 15 m: H 21.000 – 21.450 MHz: Primary Entire amateur radio band 12 m: 24.890 – 24.990 MHz: Primary Entire amateur radio band 10 m: A 28.000 – 29.700 MHz: 29.300 – 29.510 MHz: Primary Entire amateur radio band VHF: 2 m: V 144.000 – 146.000 MHz: 145.800 – 146.000 MHz: Primary UHF: 70 cm: U 435.000 – 438.000 ...
Morse code is called the original digital mode. Radio telegraphy, designed for machine-to-machine communication is the direct on / off keying of a continuous wave carrier by Morse code symbols, often called amplitude-shift keying or ASK, may be considered to be an amplitude modulated mode of communications, and is rightfully considered the first digital data mode.
[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 ...
The American Radio Relay League (ARRL) is the largest membership association of amateur radio enthusiasts in the United States. ARRL is a non-profit organization and was co-founded on April 6, 1914, by Hiram Percy Maxim and Clarence D. Tuska of Hartford, Connecticut .
An amateur radio propagation beacon is a radio beacon, whose purpose is the investigation of the propagation of radio signals. Most radio propagation beacons use amateur radio frequencies. They can be found on LF, MF, HF, VHF, UHF, and microwave frequencies. Microwave beacons are also used as signal sources to test and calibrate antennas and ...
This map shows all the countries that currently have an official Amateur Radio presence on 5 MHz / 60 m, whether it be by WRC-15, Article 4.4, Special Individual Permits, Trial and/or Emergency Basis, or any combination of these. The 60-meter band or 5MHz band is a relatively new amateur radio allocation.
The original Class A network allocation for amateur radio was made in the 1970s, [47] and recorded in September 1981, [7] which consisted of ~16 million IP addresses. As of 18 July 2019, the lower 75% of the 44 / 8 block (~12 million addresses) remained for amateur radio usage, with the upper 25% (44.192 / 10, ~4 million IP address) having been ...