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Furuno FM2721 Manual

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SP - 1
SPECIFICATIONS OF MARINE VHF RADIOTELEPHONE FM-2721
1. GENERAL
Number of Channels INLAND WATERWAYS (ATIS): 55
INTL: 55
USA: 55
Weather: 10
Private: 20
Communication System Semi-duplex & Simplex
Class of Emission G3E (Voice), G2B (DSC)
2. TRANSMITTER
Frequency Range: 155.000 to 161.475MHz
Output Power: 25W max., 1W at power reduction
Frequency Deviation: ±5 kHz max.
Antenna Impedance: 50 ohms
AF Response: 6 dB/oct. +1dB/-3dB, Pre-emphasis
Spurious Emission: St-by: less than 2 nW
Transmit: less than 0.25 µW
3. RECEIVER
Frequency Range: 155.000 to 166.075MHz
Intermediate Frequency: 1st. 45.1 MHz, 2nd. 455 kHz
Antenna Impedance: 50 ohms
Sensitivity: Less than +6dBµV (20dB SINAD)
Adjacent Channel Selectivity: 70dB or more
Spurious Response: 70dB or more
Audio Output: Handset speaker: 0.5 W into 8 ohms
Ear-speaker: 1.5 mW into 150 ohms
4. DSC SECTION
Protocol: Complies with ITU-R Rec. 493-9[5],
541-8(Class D) and 689-2
Modulation Rate: 600 Hz ±30 p.p.m. max.
(1200 baud equivalent)
Modulation: AFSK
Modulation Frequency: Mark: 1300Hz ±10Hz max.
Space: 2100Hz ±10Hz max.
Modulation Index: 2.0 ±10%
Dynamic Range SER 10
-2
or less
Navigation Data IEC61162-1 (NMEA)
5. ATIS SECTION
Modulation Rate: 600 Hz ±30 p.p.m. max.
(1200 baud equivalent)
Modulation: AFSK
Modulation Frequency: Mark: 1300Hz ±10Hz max.
Space: 2100Hz ±10Hz max.
Modulation Index: 1.0 ±10%
6. CH70 WATCH RECEIVER
Receiving Frequency 156.525 MHz
Sensitivity (Input level SER=10
-2
): less than 0 dBµV
Conducted Spurious Emission: Less than 2 nW
7. POWER SUPPLY
Main Unit 12 VDC (-10%, +30%): 2 A,
Max. 6 A at 25W transmit
8. ENVIRONMENTAL CONDITION
Ambient Temperature -15°C to +55°C
Relative Humidity 93%±3% at 40°C
Vibration ±1 mm ±10%, 2(5) to 13.2 Hz,
(IEC60945) Maximum acceleration 10 m/s
2
, 12.5/50 Hz
Water proofing Transceiver Unit: IPX0
Handset & Hanger: IPX5
9. COATING COLOR
Transceiver Unit N3.0
Handset & Hanger N3.0
… 64 …


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