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An ICOM IC-7300 Radio Tuned to the 20 Meter Band. The ICOM IC-7300 is a multimode 6 meter, 4 meter (ITU Region 1 only) and HF base station amateur radio transceiver. [1] The IC-7300 was announced to the public at the Japan Ham Fair in 2015. [2] The radio has 100 watts output on CW, SSB, and FM modulations and 25 watts of output in AM. [3]
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.
The Icom IC-V82 is a VHF handheld transceiver with coverage in the two-meter band (144–146 MHz) and a maximum output power of 7 watts. [8] It was manufactured and sold by Icom from 2004 to 2014. [9] [10] [11] Following its discontinuation, Icom issued an advisory warning about counterfeit radios, including the IC-V82.
This is an accepted version of this page This is the latest accepted revision, reviewed on 7 February 2025. Claimed sensitivity to electromagnetic fields This article is about a pseudomedical diagnosis. For the recognized effects of electromagnetic radiation on human health, see Electromagnetic radiation and health. Electromagnetic hypersensitivity Idiopathic environmental intolerance ...
The fact of connecting a ham radio station to a telephone network exists from the beginning of the ham radio operators, even commercially, as the case of Carterfone [2] (with lawsuits filed by the companies to which it was connected [3]), but it was not possible to talk about mobile telephony until the arrival of the cellular network AMPS, initially using a car phone as the cellular terminal ...
Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency [1] range from around 20 kHz to around 300 GHz.
In a superheterodyne receiver, AGC is usually applied to the IF amplifier, and there may be a second AGC loop to control the gain of the RF amplifier to prevent it from overloading, too. In certain receiver designs such as modern digital receivers, a related problem is DC offset of the signal. This is corrected by a similar feedback system.
A.D. 7300, a year in the 8th millennium CE; 7300 BCE, ... ICOM IC-7300 amateur radio transceiver; Rail. Hankyu 7300 series electric multiple unit train class;