spurious emission level

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• TEMPEST — is a codename referring to investigations and studies of compromising emanations (CE). Compromising emanations are defined as unintentional intelligence bearing signals which, if intercepted and analyzed, may disclose the information transmitted …   Wikipedia

• Radio 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.… …   Wikipedia

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• Amateur radio license — An amateur radio license is a legal document or permit giving official permission to the license holder to operate an amateur radio station. The license typically permits the bearer to transmit a signal on designated radio frequencies in order to …   Wikipedia

• Unintentional radiator — An unintentional radiator is any device which creates radio frequency energy within itself, of which a significant amount does not normally leave the device or its housing, unless it is damaged or malfunctioning.A computer would be an excellent… …   Wikipedia

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• nebula — nebular, adj. /neb yeuh leuh/, n., pl. nebulae / lee , luy /, nebulas. 1. Astron. a. Also called diffuse nebula. a cloud of interstellar gas and dust. Cf. dark nebula, emission nebula, reflection nebula …   Universalium

• electricity — /i lek tris i tee, ee lek /, n. 1. See electric charge. 2. See electric current. 3. the science dealing with electric charges and currents. 4. a state or feeling of excitement, anticipation, tension, etc. [1640 50; ELECTRIC + ITY] * * *… …   Universalium

• Video camera tube — In older video cameras, before the mid to late 1980s, a video camera tube or pickup tube was used instead of a charge coupled device (CCD) for converting an optical image into an electrical signal. Several types were in use from the 1930s to the… …   Wikipedia

• Intergovernmental Panel on Climate Change — IPCC redirects here. For other uses, see IPCC (disambiguation). Intergovernmental Panel on Climate Change Org type Panel …   Wikipedia