Federal Signal Modulators (also known as Modulator Speaker Arrays) are electronic warning devices produced by Federal Signal Corporation that are used...

ATI HPSS Thunderbolt (siren) Federal Signal 3T22 / 2T22 Federal Signal Model 2 Federal Signal Modulator Federal Signal STH-10 Chrysler Air-Raid Siren...

a Federal Signal Modulator at the Bruce Nuclear Visitor's Centre. The Public Siren network as it is called, consists of mostly Whelens, Modulators, and...

An RF modulator (radio frequency modulator) is an electronic device used to convert signals from devices such as media players, VCRs and game consoles...

sirens were all replaced with Federal Signal Modulators. One system 7000 is on display next to a Federal Signal Modulator at the Kuwait General Administration...

music Modulate (album), a rock/electronica album by Bob Mould Modulator (EP), an electronica EP by Information Society Federal Signal Modulator, a civil...

may drive the signal too strongly or weakly, thus requiring constant adjustment. Pilot frequencies can be generated by an agile modulator, taking the space...

electro-optic modulator (EOM) is an optical device in which a signal-controlled element exhibiting an electro-optic effect is used to modulate a beam of light...

occurs in analog frequency modulation. The signals feeding the phase modulator and the envelope modulator are further phase-shifted by 90° with respect...

emission in the absence of any modulating signal. In music production, carrier signals can be controlled by a modulating signal to change the sound property...

m(t)={A\cos(\omega t)}} , the modulated signal (derivative of the input signal) which is transmitted by the modulator is | m ˙ ( t ) | m a x = ω A {\displaystyle...

are manufactured by the Federal Signal Corporation. Most of them are Federal Signal Modulators. They are operated via radio signal from a control system...

to a volcanic disaster from the Mount Rainier Volcano. Over 40 Federal Signal Modulator sirens are strategically placed through the valley. When imminent...

occupied by a modulated carrier signal. An FM radio receiver's tuner spans a limited range of frequencies. A government agency (such as the Federal Communications...

was evacuated after tornado warnings in downtown Chicago. The Federal Signal Modulator behind left field sounded for the surrounding Wrigleyville area...

designed specifically for the symbol-set used by the modulator, determines the phase of the received signal and maps it back to the symbol it represents, thus...

selective estrogen receptor modulators (SERMs). Despite its widespread use, the term "selective androgen receptor modulator" has been criticized by some...

Bluetooth the minimum deviation is 115 kHz. A GFSK modulator differs from a simple frequency-shift keying modulator in that before the baseband waveform (with...

signal-to-noise ratio of the high-frequency portion of the baseband, i.e., modulating signal, which improvement results from passing the modulating signal...

signal must pass through an electronic circuit containing the following components: Noise filter Analog-to-digital converter Encoder Modulator Signal...

encoded by eight 8-bit words corresponding to one pulse-code modulated cycle of the signal, sampled 8000 times per second. It is typically stored in read-only...

frequency signals. Each type of radio emission is classified according to its bandwidth, method of modulation, nature of the modulating signal, and type...

American Signal Corporation. List of civil defense sirens "Old Alerting Communicators of America Brochure". www.airraidsirens.net. 1968. American Signal website...

requirements of communications system components for a carrier signal that is frequency modulated by a continuous or broad spectrum of frequencies rather than...

transmitted by the radio signal. The sidebands comprise all the spectral components of the modulated signal except the carrier. The signal components above the...

C/N, is the signal-to-noise ratio (SNR) of a modulated signal. The term is used to distinguish the CNR of the radio frequency passband signal from the SNR...

some characteristic of the modulating signal. The envelope of the modulated optical signal is an analog of the modulating signal in the sense that the instantaneous...

In telecommunications, a narrowband modem is a modem whose modulated output signal has an essential frequency spectrum that is limited to that which can...

utilized, resulting in a pulse train or digital pulse amplitude modulated (PAM) signal. This is typically used over non-filtered wires such as fiber optical...

term wideband modem has the following meanings: A modem whose modulated output signal can have an essential frequency spectrum that is broader than that...