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Before moving to satellite radio in 2006, The Howard Stern Show peaked at 20 million listeners on syndicated terrestrial radio. [46] Unlike the above programs, Stern's radio show was broadcast daily for 4–5 hours per day. Paul Harvey, at his peak, drew an estimated 25 million listeners to his 15-minute daily program. [47]
High frequency (HF) is the ITU designation [1] for the band of radio waves with frequency between 3 and 30 megahertz (MHz). It is also known as the decameter band or decameter wave as its wavelengths range from one to ten decameters (ten to one hundred meters).
The High-frequency Active Auroral Research Program (HAARP) is a University of Alaska Fairbanks program which researches the ionosphere – the highest, ionized part of Earth's atmosphere. The most prominent instrument at HAARP is the Ionospheric Research Instrument (IRI), a high-power radio frequency transmitter facility operating in the high ...
Frequency range Max bandwidth RX ADC bits TX DAC bits TX capable Sampling rate Frequency accuracy ppm Panadapters / Receivers Host Interface Windows Linux Mac FPGA Aaronia SPECTRAN V6 ECO [1] €2,498 EUR Pre-built Active 9 kHz – 8 GHz Up to 120 MHz (2 Rx with 60 MHz each) 16 14 Yes 2 GSPS 0.005 (OCXO option) 2/1
In the United States, FM broadcasting stations currently are assigned to 101 channels, designated 87.9 to 107.9 MHz, within a 20.2 MHz-wide frequency band, spanning 87.8–108.0 MHz. In the 1930s investigations were begun into establishing radio stations transmitting on "Very High Frequency" (VHF) assignments above 30 MHz.
The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz).Electromagnetic waves in this frequency range, called radio waves, are widely used in modern technology, particularly in telecommunication.
Shared Resources High Frequency Radio Program (SHARES) - The SHARES HF Radio Program brings together the assets of over 1,000 HF radio stations worldwide to voluntarily pass emergency messages when normal communications are destroyed or unavailable. SHARES uses common radio operating and message formatting procedures and more than 250 ...
The Joint Tactical Radio System (JTRS) as a Program of Record evolved from a loosely associated group of radio replacement programs to an integrated effort to network multiple weapon system platforms and forward combat units where it matters most – at the last tactical mile. In 2005, JTRS was restructured under the leadership of a Joint ...