Furuno FS-2570 Manual

Pub. No.: SB-2241
Date : November 1, 2002
TECHNICAL
INFORMATION
TEST REPORT ON THE PERFORMANCE OF
MARINE SSB RADIO TELEPHONE
Trade Name: FURUNO
Type: FS-2570
FURUNO ELECTRIC CO., LTD.
NISHINOMIYA CITY, JAPAN

Pub. No.: SB-2241
Date : November 1, 2002
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November 1, 2002
All data herein contained is true and correct to my best knowledge.
Masayuki Mori
Manager
Radio Communication Engineering Section,
Research and Development Department,
Marine Electronic Products Division
FURUNO ELECTRIC CO., LTD.

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***** CONTENTS *****
1GENERAL INFORMATION................................................................................................3
1.1 Specifications...............................................................................................................3
1.2 List of Test Equipment Used.......................................................................................4
2 IDENTIFICATION OF EQUIPMENT (FCC Rule Part 2.925)...........................................6
3TEST DATA........................................................................................................................7
3.1 RF POWER OUTPUT (FCC Rules Part 80.215 & 2.1046).......................................7
3.2 MODULATION CHARACTERISTICS (FCC Rule Part 2.1047).............................10
3.2.1 Audio Frequency Response (FCC Rules Part 2.1047 (a) & 80.213)..............10
3.2.2 Power Limiting vs. Audio Input Voltage (FCC Rule Part 2.1047).....................12
3.3 OCCUPIED BANDWIDTH (FCC Rule Part 2.1049)................................................14
3.4 EMISSION LIMITATIONS (FCC Rule Part 80.211)................................................26
3.5 SPURIOUS EMISSIONS AT ANTENNA TERMINAL (FCC Rule Part 2.1051)......27
3.6 FIELD STRENGTH OF SPURIOUS RADIATION (FCC Rule Part 2.1053)...........40
3.7 FREQUENCY STABILITY (FCC Rule Part 2.1055).................................................46
3.8 SUPPRESSION OF INTERFERENCE FROM RECEIVER (FCC Rules Part
80.217 and 2.1051)....................................................................................................54
4TRANSMITTER POWER ADJUSTMENT PROCEDURE (FCC Rule part 2.1033)......55
5PHOTOGRAPHS TO REVEAL EQUIPMENT CONSTRUCTION AND LAYOUT
(FCC Rule Part 2.1033)....................................................................................................56
6DESCRIPTION OF CIRCUITRY AND DEVICES (FCC Rule Part 2.1033)...................57
6.1 Function of Each Semiconductor or Active Device.....................................................57
6.2 Description of the circuits employed for suppression of spurious radiation, for
limiting or shaping the control pulse, and for limiting or controlling power...................65
7Operators Manual incl. Circuit Diagrams (FCC Rule Part 2.1033)................................66

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1GENERAL INFORMATION
1.1 Specifications
(a) Manufacturer: Furuno Electric Co., Ltd.,
Ahihara-cho 9-52, Nishinomiya-city,
662-8580 Japan
(b) Model: FS- 2570
(Serial No.: 3536-0002)
(c) Frequency Range: 1.6 to 27.5 MHz (transmit)
0.1 to 29.9 MHz (receive)
(d) Class of Emission: J3E (LSB/USB, Telephony)
H3E (receive only)
F1B,
J2B (DSC, NBDP)
F3C (receive only)
(e) RF Output Power: 250 W
(e) Power Supply: 24 V DC
1.5 A (receive)
35 A (max) (transmit)
(f) Dimensions & Weight: (1) Transceiver unit (FS-2570T),
560 mm (H) x 340 mm(W) x 135 mm(D)
15.0 kg
(2) Antenna Coupler (AT-1560-25),
390 mm(H) x 267 mm(W) x 90 mm(D)
8.7 kg
(3) Control unit (FS-2570C)
121 mm(H) x 300 mm(W) x 110 mm(D)
1.8 kg
(4) Handset (HS-2001),
200 mm(H) x 55 mm(W) x 77 mm(D)
0.6 kg

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1.2 List of Test Equipment Used
(a) SPECTRUM ANALYZER
Manufacturer: Takeda Riken
Model: TR 4173
S/No: 85580030
(b) 50ΩLOAD/ WATT METER:
Manufacturer: Tokyo Denpa
Model: DJ 522-OH-2
DC to 30 MHz: 50 Ω250/500 W
S/No: 46507
(c) DC POWER SUPPLY
Manufacturer: Takasago
Model: GP 035-50R
0 to 35 VDC, 0 to 50 A
S/No: 13086029
(d) PLOTTER
Manufacturer EPSON
Model: HI-80
S/No: 02006569
(e) BROADBAND ROD ANTENNA
Manufacturer: AILTECH
Model: 95010-1
10 kHz to 40 MHz
S/No: 496
(f) BICONICAL ANTENNA
Manufacturer: ELECTRO METRICS
Model: BIA-25
20 MHz to 220 MHz
S/No: 2650
(g) FREQUENCY COUNTER:
Manufacturer TAKEDA RIKEN
Model: TR5824
10 Hz to 600 MHz: 5 x 10 -8/day
S/NO:. 41930036
(h) AUDIO SIGNAL GEN (2 ea.):
Manufacturer KENWOOD
Model: AG-253
50 Hz to 1 00 MHz, 600Ω
S/No:1100026 & 709003
(i) AUDIO VOLT METER:
Manufacturer: Kikusui Electronics Corp.:
Model: 161E
S/No: 2961776