Equipment information

Icom iC-r20 Receiver
Manufacturer
Icom
Model iC-r20
Date 2004
Category: Radio, Communication
Group Receiver
Description COMMUNICATIONS RECEIVER
Information
                                    FEATURES
O Covers 0.150-3304.999 MHz* wide frequency range
‘Some frequency bands are inhibited according to version
O External power supply operation O 1250 memory channels*
with 26 banks available
*200 auto write and 50 scan edge channels are included.
O Built-in bar-antenna O Dualwatch operation

GENERAL
• Mode : FM, WFM, AM, SSB, CW
• No. of memory channel : 1250 channel
(incl. scan edge and auto
memory write ch.)
• Frequency stability : ±6 ppm max.
• Tuning steps : 0.01, 0.1, 1, 5, 6.25, 8.33*,
9*, 10, 12.5, 15, 20, 25,
30, 50 and 100 kHz
*selectable depending on
the operating frequency
band.
• Antenna Impedance : 50 Ω
• Power supply requirement : 3 × AA(R6) alkaline cells,
BP-206 or external power
supply (BC-149/A/D, CP-18)
• Polarity : Negative ground
• Current drain (at 3.7 V, backlight is OFF) :
Rated audio 150 mA typical
Standby 100 mA typical
Power saved 35 mA typical
(Power save ratio is 1 : 4)
• Usable temperature range : –10°C to +60°C
( –14°F to +140°F)
• Dimensions : 60(W) × 142(H) × 34.8(D) mm;
(projections not included) 23⁄8 (W) × 519⁄32 (H) × 13⁄8(D) in
• Weight (with antenna and BP-206) : Approx. 320 (g);
1119⁄32 (oz)
• External SP connector : 3-conductor 3.5(d) mm
(1⁄8”) / 8Ω
• Audio output power (at 3.7 V) : 100 mW typical at 10 %
distortion with an 8 Ω load
• BP-206 charging time : Approx. 8 hours
• Charging current : 400 mA typical

These manuals are available for the above equipment:

Icom -- iC-r20 -- Service Manual
File name Icom-3225-Manual-Page-1-Picture
Manual Type Service Manual
Pages 70
Size 6.57 Mbytes (6891290 Bytes)
Language english
Revision
Manual-ID/Number S-14104MZ-C1
Date 2004
Quality Electronic document, no scan, very well readable.
Upload date
MD5 e617913c217292066ae369f39f0dac5f
Downloads 642 since 06 February 2012
Information
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 DISASSEMBLY INSTRUCTIONS
SECTION 4 CIRCUIT DESCRIPTION
4-1 RECEIVER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 1
4-2 PLL CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 7
4-3 OTHER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 10
4-4 POWER SUPPLY CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 11
4-5 PORT ALLOCATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 12
4-6 BC-156 CIRCUIT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 14
SECTION 5 ADJUSTMENT PROCEDURES
5-1 PREPARATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 1
5-2 SOFTWARE ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 3
SECTION 6 PARTS LIST
SECTION 7 MECHANICAL PARTS AND DISASSEMBLY
SECTION 8 SEMI-CONDUCTOR INFORMATION
SECTION 9 BOARD LAYOUTS
9-1 RF UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 1
9-2 LOGIC UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 3
9-3 REC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 5
9-4 1STAVCO BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 7
9-5 1STBVCO BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 7
9-6 2NDCVCO BOARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 7
9-7 2NDDVCO BOARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 7
9-8 DOWNCONV BOARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 - 7
SECTION 10 BLOCK DIAGRAM
SECTION 11 VOLTAGE DIAGRAM
11-1 RF UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 1
11-2 LOGIC UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 3
11-3 REC UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 4
11-4 1STAVCO BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 5
11-5 1STBVCO BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 5
11-6 2NDCVCO BOARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 6
11-7 2NDDVCO BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 6
11-8 DOWNCONV BOARD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 7
SECTION 12 BC-156 BATTERY CHARGER UNIT
12-1 DISASSEMBLY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 1
12-2 BC-156 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 1
12-3 BC-156 VOLTAGE DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 2
12-4 BC-156 BOARD LAYOUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 - 3
Icom-3225-Manual-Page-1-Picture
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Icom -- iC-r20 -- User Manual
File name Icom-7504-Manual-Page-1-Picture
Manual Type User Manual
Pages 88
Size 2.56 Mbytes (2679416 Bytes)
Language english
Revision
Manual-ID/Number A-6353H-1 EX
Date 2004
Quality Electronic document, no scan, very well readable.
Upload date
MD5 c2a57b6effe1843af9a3dd9ee330938c
Downloads 97 since 09 January 2016
Information
FOREWORD ..................................
IMPORTANT ..................................
EXPLICIT DEFINITIONS..............
PRECAUTION ................................
................ii
SUPPLIED ACCESSORIES ........
................iii
OPERATING THEORY ................
................iii
OPERATING NOTES ...................
................iii
TABLE OF CONTENTS................
...............iv
QUICK REFERENCE GUIDE .....
............I-VI
■ Preparation............................
............I
1 PANEL DESCRIPTION...........
............1-7
■ Front, top and side panels ...
................1
■ Function display....................
................6
2 BATTERY CHARGING ...........
..........8-10
■ Battery installation................
................8
■ Caution...................................
................9
■ Battery charging....................
................9
3 FREQUENCY AND CHANNELSETTING
........11-16
■ Mode selection.......................
..............11
■ Operating band selection.....
..............12
■ Setting a tuning step.............
..............14
■ Setting a frequency...............
..............14
■ Selecting a memory channel
..............10
■ Receive mode selection......
..............16
■ Lock function.........................
..............16
4 BASIC OPERATION ...............
........17-23
■ Receiving................................
..............17
■ Setting audio volume............
..............17
■ Squelch level setting.............
..............18
■ Monitor function.....................
..............18
■ Attenuator function...............
..............19
■ RF gain...................................................19
■ Duplex operation...................................20
■ AFC function...........................................21
■ NB/ANL functions..................................21
■ Band scope.............................................22
■ [DIAL] function assignment...................23
DUALWATCH OPERATION ............24-25
■ Setting audio volume............................24
■ Squelch level setting..............................24
■ Main band selection...............................25
■ Band exchange......................................25
MEMORY CHANNELS......................26-33
■ General description...............................26
■ Memory channel programming............26
■ Memory bank setting............................27
■ Memory bank selection.........................28
■ Programming memory/bank name.....29
■ Selecting memory/bank name indication.....30
■ Copying memory contents....................31
■ Memory clearing....................................32
■ Erasing/transferring bank contents.....33
SCAN OPERATION ..........................34-41
■ Scan types..............................................34
■ Full/band/programmed scan................35
■ Scan edges programming....................36
■ Memory/bank/all bank scan.................37
■ Auto-memory write scan.......................38
■ Skip channel/frequency setting............39
■ Scan resume condition.........................40
PRIORITY WATCH ............................42-44
■ Priority watch types...............................42
■ Priority watch operation........................43
9 COMFORTABLE RECEIVING..........45-48
■ Tone/DTCS squelch operation.............45
■ Tone squelch frequency/DTCS code
setting...........................................................46
■ DTCS polarity setting............................47
■ Tone scan...............................................48
10 SET MODE .........................................49-59
■ General...................................................49
■ Set mode items......................................50
11 OTHER FUNCTIONS........................60-67
■ Antenna selection..................................60
■ Weather channel operation.................61
■ Data cloning...........................................62
■ Auto power-off function.........................63
■ IC recorder..............................................64
■ Partial reset............................................67
■ All reset..................................................68
12 CONTROL COMMAND ....................68-69
■ General...................................................68
■ Data format.............................................68
■ Command table.....................................68
13 FREQUENCY TABLE .......................70-61
■ TV channels............................................70
■ VHF marine channels...........................73
■ Weather channels..................................73
■ Other communications in the USA.....74
■ Other communications— other countries
.....76
......78
.....78
......79
......80
Icom-7504-Manual-Page-1-Picture
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Icom -- iC-r20 -- User Manual
File name Icom-7515-Manual-Page-1-Picture
Manual Type User Manual
Pages 108
Size 2.43 Mbytes (2545752 Bytes)
Language english
Revision
Manual-ID/Number A-6353H-1 EX-
Date 2004
Quality Scanned document, all readable.
Upload date
MD5 0d546661be3582fc9fc104de35d5d767
Downloads 106 since 09 January 2016
Information
Icom-7515-Manual-Page-1-Picture
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