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KOST broadcasts three digital subchannels: KOST-HD1 is a digital version of KOST's analog signal. KOST-HD2 is an HD simulcast of the talk radio format heard on co-owned KFI (640 AM). From November 2013 until February 2015, KOST's HD3 signal relayed the syndicated Christian contemporary hit radio station Air1.
The ratio of power of the analog signal to the digital signal was initially standardized at 100:1 (−20 dBc), i.e., the digital signal power is 1% of the analog carrier power. This low power, plus the uniform, noise-like nature of the digital modulation, is what reduces its potential for co-channel interference with distant analog stations.
A digital signal controller (DSC) is a hybrid of microcontrollers and digital signal processors (DSPs). Like microcontrollers, DSCs have fast interrupt responses, offer control-oriented peripherals like PWMs and watchdog timers, and are usually programmed using the C programming language, although they can be programmed using the device's native assembly language.
The station began broadcasting an HD Radio digital signal in 2005. As of 2024, KKGO-FM broadcasts on four subchannels: KKGO-FM HD1 is a digital simulcast of the analog signal. KKGO-FM HD2 carries a classical music format branded as "K-Mozart" as a simulcast of KMZT (1260 AM)'s former format. On October 25, 2024, it flipped to Christmas music. [26]
On December 21, 2021, KNOU changed its call letters to KNX-FM, further reflecting the AM station's primary signal shift to the FM band, while still being heard on the existing 1070 AM frequency. This marked the return to the Los Angeles airwaves for the KNX-FM call sign, last used on March 2, 1989 ; 35 years ago ( 1989-03-02 ) .
Some suppliers also offer more sophisticated heating control using the radio teleswitch network. For example, Scottish Power 'Weathercall' and SSE's 'Total Heat Total Control' both dynamically vary the length of time storage heating is energised each night depending on the forecast temperature for the following day to help maintain a consistent ...
Standard Issue Civil War Signal Corps Kit, complete with flags and torches. While serving as a medical officer in Texas in 1856, Albert James Myer proposed that the Army use his visual communications system, called aerial telegraphy (or "wig-wag"). When the Army adopted his system on 21 June 1860, the Signal Corps was born with Myer as the ...
Mixed signal integrated circuit: the metal areas on the right-hand side are capacitors, on top of which are large output transistors; the left-hand side is occupied by the digital logic. A mixed-signal integrated circuit is any integrated circuit that has both analog circuits and digital circuits on a single semiconductor die.