Apex (radio band)
Apex radio stations (also known as skyscraper and pinnacle) was the name commonly given to a short-lived group of United States broadcasting stations, which were used to evaluate transmitting on frequencies that were much higher than the ones used by standard amplitude modulation (AM) and shortwave stations. Their name came from the tall height of their transmitter antennas, which were needed because coverage was primarily limited to local line-of-sight distances. These stations were assigned to what at the time were described as "ultra-high shortwave" frequencies, between roughly 25 and 44 MHz. They employed amplitude modulation (AM) transmissions, although in most cases using a wider bandwidth than standard broadcast band AM stations, in order to provide high fidelity sound with less sta
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AM broadcastingApexEdwin Howard ArmstrongFM broadcast bandFM broadcasting in the United StatesFranklin M. DoolittleKSTP_(AM)List of oldest radio stationsMount_WashingtonRadio in the United StatesRadio spectrumSarkes TarzianVery high frequencyW4XAW8XHW8XWJWCPNWFAN-FMWGTR (Massachusetts)WKTIWMNE (Portland, Maine)WQHTWSM-FM (1941–1951)WTSSWWJ_(AM)WXYT-FM
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Apex (radio band)
Apex radio stations (also known as skyscraper and pinnacle) was the name commonly given to a short-lived group of United States broadcasting stations, which were used to evaluate transmitting on frequencies that were much higher than the ones used by standard amplitude modulation (AM) and shortwave stations. Their name came from the tall height of their transmitter antennas, which were needed because coverage was primarily limited to local line-of-sight distances. These stations were assigned to what at the time were described as "ultra-high shortwave" frequencies, between roughly 25 and 44 MHz. They employed amplitude modulation (AM) transmissions, although in most cases using a wider bandwidth than standard broadcast band AM stations, in order to provide high fidelity sound with less sta
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Apex radio stations (also know ...... and, assigned to 42 to 50 MHz.
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Apex war ein Frequenzband, das ...... hnell auch die Apex-Stationen.
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Apex radio stations (also know ...... h fidelity sound with less sta
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Apex war ein Frequenzband, das ...... hnell auch die Apex-Stationen.
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Apex (Frequenzband)
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Apex (radio band)
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