Icom - iC-r20 - Receiver
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Icom iC-r20
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Equipment:
iC-r20
Date:
2004
Category:
Group:
Sub Group:
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
4 Manuals
Service manual
Manual type:
Service manual
Pages:
70
Size:
6.6 MB
Language:
english
Revision:
Manual-ID:
S-14104MZ-C1
Date:
Quality:
Electronic document, no scan, very well readable.
Upload date:
Feb. 6, 2012
MD5:
e617913c-2172-9206-6ae3-69f39f0dac5f
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
Downloads:
1739
Download
icom--ic-r20--service--ID3225.pdf
User manual
Manual type:
User manual
Pages:
88
Size:
2.6 MB
Language:
english
Revision:
Manual-ID:
A-6353H-1 EX
Date:
Quality:
Electronic document, no scan, very well readable.
Upload date:
Jan. 9, 2016
MD5:
c2a57b6e-ffe1-843a-f9a3-dd9ee330938c
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 election...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
Downloads:
760
Download
icom--ic-r20--user--ID7504.pdf
User manual
Manual type:
User manual
Pages:
108
Size:
2.4 MB
Language:
english
Revision:
Manual-ID:
A-6353H-1 EX-
Date:
Quality:
Scanned document, all readable.
Upload date:
Jan. 9, 2016
MD5:
0d546661-be35-82fc-9fc1-04de35d5d767
Downloads:
1049
Download
icom--ic-r20--user--ID7515.pdf
User manual
Manual type:
User manual
Pages:
88
Size:
2.6 MB
Language:
english
Revision:
Manual-ID:
A-6353H-1EX
Date:
January 2004
Quality:
Electronic document, no scan, very well readable.
Upload date:
Dec. 23, 2018
MD5:
4f1ae467-b8e1-bafd-0bae-ab82ed322f8a
Information
INSTRUCTION MANUAL
FOREWORD ... i
IMPORTANT ... i
EXPLICIT DEFINITIONS ... i
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 CHANNEL SETTING
... 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 set-
ting... 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 election ... 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
14 MAINTENANCE ... 78
■ Troubleshooting ... 78
15 SPECIFICATIONS ... 79
16 OPTIONS ... 80
Downloads:
542
Download
icom--ic-r20--user--ID11532.pdf