Amplitude Modulation
a way of applying information (voice or music) to a radio signal, beaten by SSB and then FM.
also: the old broadcast band from 530 to 1710 kHz.
"nobody listens to AM anymore"
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The time required for a radar pulse to travel 1 mile (~1.6 km) to an object, i.e., to a target; reflect; and return to the receiver. Note: A radar statute mile is approximately 10.8 ms (microseconds); a radar nautical mile is approximately 12.4 s. The time for any other radar unit distance is readily determined, such as the radar meter or the radar kilometer. NTIA
I listen to propagation mapping radar on the 27 MHz freeband.
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New digital modulation type, labelled as "APCO Project-25" P-25 pretty much is the same modulation that cell phones use. P-25 is supposed to give better voice quality, but there really is no differance. Plus I need to buy a new radio scanner now.
There are two types of P-25, 3,600 baud and 7,200 baud speeds.
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orginally classified as a "defoliant" but the US Government found out that it is better at killing VC soliders and giving Americans prostate cancer.
Between 1965 and 1970, the United States dropped more then 50,000 tons of Agent Orange on Vietnam.
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Emergency Position Indicating Radio Beacon
The EPRIB (or "e-piryb") is pretty much an uber-ELT that transmits a radio signal on a frequency somewhere around 406 MHz. This signal contains information regarding the location of the signal (usally a downed aircraft or ship in distress). Satellites (known as SARSAT pick up this radio signal (as well as ELT signals) and relay this information to centers like the AFRCC. Search and Rescue is then dispatched to search and rescue agencies such as The Civil Air Patrol and Coast Guard.
Because the captian of the sinking fishing boat had bought an EPIRB for his boat, the Coast Guard was able to find and rescue him quickly.
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SOS really doesn't stand for anything, as any radio operator will tell you,
it is simply "SOS" becuase the letters S and O are very easy to understand under conditions of high interferance.
so stop saying "Save our whatever"
SOS, SOS, Titanic
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it literally means "losing my temper" or "going insane" to some degree. If you would look at the REM lyrics to the song by the same name, it makes more sense, it really has nothing to do with religion.
I was pretty much losing my religion after being forced to listen to rap music by all the freshman girls at my school.
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