The VHF band: the 270 megahertz that shaped modern radio

May 26, 2026

No frequency range has shaped everyday radio experience more directly than VHF. From 30 to 300 MHz, this single ITU...
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The 118–137 MHz Aviation Communications Band: How Aircraft Talk to the World

May 26, 2026

Every word spoken between a pilot and an air traffic controller in civil aviation happens in a 19 MHz slice...
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The 108–137 MHz VHF Airband: Navigation, Communication, and the Infrastructure of Flight Safety

May 26, 2026

There is a 29 MHz slice of the radio spectrum that every commercial aircraft in the world depends on every...
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The 136–174 MHz VHF High Band: Spectrum, Users, and Why It Matters

May 26, 2026

The 38 MHz of spectrum between 136 and 174 MHz is one of the most densely occupied slices of the...
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The C band: sixty years of satellite communications, an $81 billion auction, and a near-miss with aviation safety

May 26, 2026

Few frequency ranges have generated as much money, as much regulatory complexity, or as much unexpected conflict as the C...
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The 410 to 450 MHz band: land mobile, short-range devices, and the spectrum underneath amateur radio

May 26, 2026

Few frequency ranges illustrate the tension between licensed professional users, unlicensed consumer devices, and secondary amateur allocations as clearly as...
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The 430 to 440 MHz band: the 70-centimetre allocation and the spectrum it shares

May 26, 2026

Ten megahertz is not much room. Yet the 430 to 440 MHz band — universally known among radio operators as...
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The 406 to 430 MHz band: distress beacons, federal land mobile, space surveillance radar, and the gap before 70cm

May 26, 2026

There are bands in the UHF spectrum that carry a single dominant function — a military block, a broadcast allocation,...
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The UHF MetSat and MetAids band: weather data from balloon to satellite, squeezed into a few megahertz

May 26, 2026

Every weather forecast you have seen in the past fifty years has depended, in some part, on a narrow slice...
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The 30 to 88 MHz band: the original tactical radio range, and why it still matters

May 26, 2026

There is a version of this frequency range that most people encounter without knowing it. The upper edge of 88...
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