frequency signal transmitter
11Signal Corps (United States Army) — U.S. Army Signal Corps Coat of Arms Active 3 March 1863 – Present Country …
12Frequency multiplier — A frequency multiplier is commonly used in a radio receiver or radio transmitter to multiply the base frequency of the oscillator by a predetermined number. This multiplied frequency is then amplified and sent to the final drive stage and into… …
13Transmitter power output — In radio transmission, transmitter power output (TPO) is the actual amount of power (in watts) of radio frequency (RF) energy that a transmitter produces at its output.This is not the amount of power that a radio station reports as its power, as… …
14Transmitter attack-time delay — In telecommunication, transmitter attack time delay is the interval from the instant a transmitter is keyed on to the instant the transmitted radio frequency (rf) signal amplitude has increased to a specified level, usually 90% of its key on… …
15High Frequency Active Auroral Research Program — HAARP is often confused with Project HARP, the High Altitude Research Project (a joint project of The Pentagon and the Canadian Department of National Defence).The High Frequency Active Auroral Research Program (HAARP) is an investigation project …
16Orthogonal frequency-division multiplexing — Passband modulation v · d · e Analog modulation AM · …
17Radio transmitter design — In plate modulation systems the voltage delivered to the stage is changed. As the power output available is a function of the supply voltage, the output power is modulated. This can be done using a transformer to alter the anode (plate) voltage.… …
18Radar signal characteristics — A Radar System uses a Radio Frequency electromagnetic signal reflected from a target to determine information about that target. In any radar system, the signal transmitted and received will exhibit many of the characteristics described below.The …
19Spark-gap transmitter — A spark gap transmitter is a device for generating radio frequency electromagnetic waves. These devices served as the transmitters for most wireless telegraphy systems for the first three decades of radio (1887 ndash;1916) and the first… …
20Single-frequency network — For other uses, see SFN (disambiguation). A single frequency network or SFN is a broadcast network where several transmitters simultaneously send the same signal over the same frequency channel. Contents 1 Overview 2 OFDM and COFDM 3 DVB T SFN …
