24
Glossary of Terms
Term Description
Canadian
Channels
Channels designated as defined and regulated by Industry Canada, (RIC),
Marine Communications & Traffic Services.
Duplex Transmit and receive on different frequencies.
Encryption Scrambled audio for extra privacy.
FM Frequency Modulation.
International
Channels
Channel designations as defined for use in international waters by the
International Telecommunications Union (ITU).
Marine
Channels
Special channels reserved for marinas located in selected European
countries. These channels are pre-programmed in the transceiver as P1 & P2.
Private
Channels
Channels which are assigned by regulatory agencies governing VHF radio use
for a specific region or country. These channels are prefixed with a "P" and
can only be programmed into the transceiver by authorised dealers.
PTT Press To Talk (Transmit)
RX Receive
Simplex Transmit and receive on the same frequency.
Squelch To suppress background noise
TX Transmit
Transceiver A device that can transmit and receive
USA
Channels
Channel designations as defined by the Federal Communications Commission
(FCCVOX )
VOX Voice Operated Transmit
VHF Very High Frequency (30MHz to 300 MHz)
Frequency Range
156.025 - 157.425
Power Output Selectable: HIGH = 4W, LOW = 1W
Modulation 16K0G3E
Oscillator Method PLL
Frequency Stability ±2PPM
Maximum Deviation ±5 kHz
Audio Distortion < 5% (1 kHz 60%)
Spurious Emissiong -55db
Hum & Noise -40 [dB]
TRANSMITTER
23
Technical Specifications
Frequency Range
156 - 163.275MHz
Receiver Type Double Super Heterodyne type
Sensitivity <0.25uV (12dB SINAD)
Frequency Stability ±2PPM
Spurious Rejection -60 dB
Adjacent Channel Selectivity -70 dB
Distortion < 3% Typical
Hum & Noise -40 dB
Audio Output 1W
Speaker Size 38 mm
RECEIVER
Common
HT544
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