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GLOSSARY OF TERMS
VHF
Very High Frequency: 30MHz to 300MHz
FM
Frequency Modulation
Carrier Wave
A Radio Frequency on which Intelligence is
superimposed
Dual Watch
Monitor channel 16 while working on another
channel
All Scan
Scans all channels
Select Scan
Scans only user selected memory channels
U.S.A. Channels
Channel designations as defined by the FCC
International Channels
Channel designations as defined by
International Telecommunication Union
Canadian Channels
Channel designations as defined by the
DOC
Weather Channels
Channels for routine and emergency
weather information broadcast by NOAA
Simplex
Transmit and receive on the same frequency
Duplex
Transmit and receive on different
frequencies
Squelch
To suppress totally
LCD
Liquid Crystal Display
TX
Transmit
RX
Receive
RF
Radio Frequency
CPU
Central Processing Unit
PLL
Phase Lock Loop (A type of frequency
Synthesizer)
VCO
Voltage Control Oscillator
PTT switch
Microphone push-to-talk switch
iv
Содержание RAY 210VHF
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Страница 19: ...7 Figure 2 2 Outline and Mounting Dimensions...
Страница 30: ...18 Figure 3 1 Layout of Controls and Connectors...
Страница 40: ...28 Fig 4 1 Block Diagram RF PCB...
Страница 41: ...29 Fig 4 2 Block Diagram CPU PCB...
Страница 55: ...43 6 2 RAY210 ASSEMBLY DRAWING...
Страница 57: ...45 6 3 SCHEMATIC DIAGRAM Fig 6 1 Schematic diagram RF PCB...
Страница 58: ...46 Fig 6 2 Schematic diagram CPU PCB l...
Страница 59: ...47 Fig 6 2 Schematic diagram CPU PCB 2...
Страница 60: ...48 Fig 6 3 RF PCB Layout Top View...
Страница 61: ...49 Fig 6 4 RF PCB Layout Rear View...
Страница 62: ...50 Fig 6 5 CPU PCB Layout Top view...
Страница 63: ...51 Fig 6 5 CPU PCB Layout Rear View...
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