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Abbreviations

Below list abbreviations (abbrev.) used in the website and common in the broadcast and other industry's.

Abbrev. - Description
± - plus or minum
°C - Degrees Celsius
°F - Degrees Fahrerhigh
°K - Degrees Kelvin

AGL - Above Ground Level
Al - aluminum
AM - Amplitude Modulation
ATSC - Advanced Television System Committee (digital TV standard)
AWG - American Wire Gauge

B - receiver noise bandwidth in Hertz.

CA - Class A (low power broadcast)
CD - Class A Digital (low power broadcast)
Cu - copper

D - Digital Class A (low power broadcast)
dB - decibels power difference (base 10 logarithmic scale)
dBD - antenna gain: decibels with respect to a standard half wave dipole antenna.
dBi - antenna gain: decibels with respect to a lossless isotropic radiator.
dBm - power decibels with respect to 1 milliwatt
DT - Digital Television full power class
DTv - Digital Television
DVD - Digital Video Disc or Digital Versatile Disc

ERP - Effective Radiated Power

FCC - Federal Communications System
FM - Frequency Modulation
fps - frames per second

GPS - Global Positioning System

HD - High Definition
HDMI - High Definition Multimedia Interface (video data communication)
HDTV - High Definition Television
Hz - Hertz (cycles per second)

in - inch
in2 - square inches

k - Boltzmann's Constant = 1.380 622 x 10-23 Watt*sec/°K.
km - kilometers
kW - kilowatts (1000 watts)

Lat - Latitude
LD - low power digital (broadcast)
Lng - Longitude
LP - low power (broadcast)

m - meters
MHz - megahertz (1,000,000 Hertz)
mi - miles
MSL - Mean (average) Sea Level
mm - millimeter
mW - milliwatts (0.001 watts)

NEC - National Electrical Code
NF - receiver noise figure (receiver noise)
NOAA - National Oceanic and Atmospheric Administration
NTSC - National Television System Committee (analog TV standard)

OTA - Over-the-Air

PPI - pixels per inch (resolution)

RG - Radio Guide (coax cable designation)
RF - Radio Frequency
RV - Recreational Vehicle

S/N - Signal-to-Noise ratio
SDTV - Standard Definition Television
sec - seconds

T - temperature
TV - Television full power class

UHF - Ultra High Frequency (300 - 3000 MHz)
µW - microwatts (0.000 001 watts)

Vac - Alternating Current RMS (Root Mean Square) Voltage.
VCR - Video Cassette Recorder
VGA - Video Graphics Array (video data communication)
VHF - Very High Frequency (30 - 300 MHz)

W - Watts

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