Dictionary of Ham Radio Terms: Difference between revisions
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==C== | ==C== | ||
''''''[[Callsign Databases#Callsign |Callsign]]''' A unique identifier for each radio amteur throughout the world | |||
'''[[Coaxial Cable]]''' : Cable that has a central conductor and an outer shield as the second conductor. Known as coaxial because the cable is cylindrical and the conductors share the same central axis. | '''[[Coaxial Cable]]''' : Cable that has a central conductor and an outer shield as the second conductor. Known as coaxial because the cable is cylindrical and the conductors share the same central axis. | ||
'''[[Codes and Alphabets#CW Abbreviations |CW Abbreviations]]''' Used by CW operators to reduce the length of transmissions by shortening words or phrases to a 2 or three letter code | |||
==D== | ==D== | ||
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==I== | ==I== | ||
'''[[IRLP]]''' Internet Radio Linking Project. A method of linking cross-world linking of repeaters so that very basic equipment can be used to communicate with hams in other countries. | |||
==J== | ==J== | ||
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==M== | ==M== | ||
'''[[Codes and Alphabets#Morse Code |Morse Code]]''' The code used by [[CW]] operators instead of voice communications | |||
==N== | ==N== | ||
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'''[[Electromagnetic Waves |Period]]''' : the time it taks in seconds for a complete wave to pass a reference point. | '''[[Electromagnetic Waves |Period]]''' : the time it taks in seconds for a complete wave to pass a reference point. | ||
'''[[Codes and Alphabets#Phonetic Alphabet |Phonetic Alphabet]]''' Specific, easily identfiable, non-confusable words are used instead of the letters of the alphabet | |||
==Q== | ==Q== | ||
'''[[Codes and Alphabets#Q Code |Q Code]]''' Three letter codes used instead of sentences or phrases. | |||
==R== | ==R== | ||
'''[[Codes and Alphabets#RSQ code |RSQ code]]''' Used to describe the readability, strength and quality of digital modes. | |||
'''[[Codes and Alphabets#RST code | RST code]]''' Used to describe the readability, strength and tone of voice or CW transmissions. | |||
'''[[Codes and Alphabets#RSV code |RSV code]]''' used to describe the readability, stength and video quality of SSTV transmissions | |||
==S== | ==S== | ||
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==T== | ==T== | ||
'''Transmission Line : Also known as [[Feedlines |feedline]]. | '''Transmission Line''' : Also known as [[Feedlines |feedline]]. | ||
==U== | ==U== | ||
Revision as of 00:19, 27 August 2008
When adding information to this page, please link to other pages in the wiki wherever possible.
A
Amplitude : the height of a wave from the average or median position.
B
Band : the portions of the Electromagnetic Spectrum that are allocated to ham radio operators
C
'Callsign A unique identifier for each radio amteur throughout the world
Coaxial Cable : Cable that has a central conductor and an outer shield as the second conductor. Known as coaxial because the cable is cylindrical and the conductors share the same central axis.
CW Abbreviations Used by CW operators to reduce the length of transmissions by shortening words or phrases to a 2 or three letter code
D
Dipole : An antenna with two sides, usually of equal length.
Dish : A highly directional antenna, parabolic in shape. Often used at microwave frequencies.
E
Electromagnetic Waves : The waves emmitted by an antenna, having two dimensions, electric and magnetic.
F
Feedline : The wire of cable that jouns a transmitter or receiver to an antenna
Frequency: the number of complete waves that pass a reference point per second. Expressed in Hertz (Hz)
G
Gain : How much more effective an antenna is as a radiator than a half wave dipole
H
HF : High Frequency. Frequencies in the range 3MHz to 30MHz
I
IRLP Internet Radio Linking Project. A method of linking cross-world linking of repeaters so that very basic equipment can be used to communicate with hams in other countries.
J
K
L
LPDA : Log Periodic Dipole Array. A multiband Antenna
M
Morse Code The code used by CW operators instead of voice communications
N
O
OCF : Off Centre Fed Dipole. A dipole that has sides of unequal length. These are multiband wire antennas
P
Period : the time it taks in seconds for a complete wave to pass a reference point.
Phonetic Alphabet Specific, easily identfiable, non-confusable words are used instead of the letters of the alphabet
Q
Q Code Three letter codes used instead of sentences or phrases.
R
RSQ code Used to describe the readability, strength and quality of digital modes.
RST code Used to describe the readability, strength and tone of voice or CW transmissions.
RSV code used to describe the readability, stength and video quality of SSTV transmissions
S
SWR : Standing Wave Ratio. The ration of the height of a standing wave on a transmission line to the height of an adjacent node.
T
Transmission Line : Also known as feedline.
U
UHF : Ultra High Frequency. Frequencies in the range 300MHz to 3 000MHz
V
VHF : Very High Frequency. Frequencies in the range 30MHz to 300MHz
W
Wavelength : the distance in metres between corresponding points on a wave.
X
Y
Z
Numbers
73 : Goodbye