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2. Noise temperature (antenna) - Wikipedia

   en.wikipedia.org/wiki/Noise_temperature_(antenna)

   Noise temperature (antenna) In radio frequency (RF) applications such as radio, radar and telecommunications, noise temperature of an antenna is a measure of the noise power density contributed by the antenna to the overall RF receiver system. It is defined as "the temperature of a resistor having an available thermal noise power per unit ...

3. List of U.S. security clearance terms - Wikipedia

   en.wikipedia.org/wiki/List_of_U.S._security...

   The following investigations are used in clearance determinations: [ 12] ANACI (Access National Agency Check with Inquiries) – Initial Confidential, Secret, L, LX; only used for civilian employees. NACLC (National Agency Check with Law and Credit) – Initial Confidential, Secret, L, LX; reinvestigations.

4. Television antenna - Wikipedia

   en.wikipedia.org/wiki/Television_antenna

   A television antenna, also called a television aerial (in British English ), is an antenna specifically designed for use with a television receiver (TV) to receive terrestrial over-the-air (OTA) broadcast television signals from a television station. Terrestrial television is broadcast on frequencies from about 47 to 250 MHz in the very high ...

5. Single Scope Background Investigation - Wikipedia

   en.wikipedia.org/wiki/Single_Scope_Background...

   Single Scope Background Investigation. A Single Scope Background Investigation ( SSBI ), now called a Tier 5 ( T5) [ 1] investigation, is a type of United States security clearance investigation. [ 2] It involves investigators or agents interviewing past employers, coworkers and other individuals associated with the subject of the SSBI.

6. Sales at stores are suddenly surging in the US economy’s ...

   www.aol.com/sales-stores-suddenly-surging-us...

   But it hasn’t all been doom and gloom for Corporate America. Walmart, America’s largest retailer, reported on Thursday that sales at its US stores jumped 4.2% last quarter and its operating ...

7. What 'secret' loudspeaker codes mean at department stores - AOL

   www.aol.com/news/2010-10-13-what-secret...

   This "code" is one of many innocuous sounding secret codes that stores use to alert employees to problems without distracting you from shopping. We tracked down some current and former retail ...