Attrezzatura informazioni:

Icom IC-R75 Ricevitore
Produttore:
Icom
Modello: IC-R75
Data: 1999
Categoria: Radio Comunicazione
Gruppo: Ricevitore
Descrizione: COMMUNICATIONS RECEIVER
Informazioni:
                                    GENERAL
• Frequency range :
*1 Specifications guaranteed for 0.1 – 29.99 MHz and 50 – 54 MHz
*2 Specifications guaranteed for 0.1 – 29.99 MHz
• Mode : SSB (LSB, USB), AM, FM, CW, RTTY, S-AM
• Receive system : Triple-conversion superheterodyne
• Intermediate frequencies :
May differ according to selected IF filter.
• Sensitivity : 0.1 MHz – 1.799 MHz (Preamplifiers are OFF)
SSB, CW, RTTY less than 2.0 μV for 10 dB S/N
AM, S-AM less than 13.0 μV for 10 dB S/N
1.8 MHz – 27.99 MHz (The preamplifier 1 is ON)
SSB, CW, RTTY less than 0.16 μV for 10 dB S/N (typical)
AM, S-AM less than 2.0 μV for 10 dB S/N
28 MHz – 29.99 MHz (The preamplifier 1 is ON)
SSB, CW, RTTY less than 0.16 μV for 10 dB S/N (typical)
AM, S-AM less than 2.0 μV for 10 dB S/N
FM less than 0.5 μV for 12 dB SINAD
50 MHz – 54 MHz (The preamplifier 2 is ON)
SSB, CW, RTTY less than 0.13 μV for 10 dB S/N (typical)
AM, S-AM less than 1.0 μV for 10 dB S/N
FM less than 0.25 μV for 12 dB SINAD
• selectivity : SSB, CW, RTTY More than 2.1 kHz/–6 dB
Less than 4.0 kHz/–60 dB
AM, S-AM More than 6.0 kHz/–6 dB
less than 20.0 kHz/–50 dB
FM More than 12.0 kHz/–6 dB
less than 30.0 kHz/–40 dB
• Audio output power : More than 2.0 W at 10 % distortion with an 8 ½ load
• Antenna impedance : 50 ½ or 450 ½
• Squelch sensitivity (threshold) :
*Preamplifiers are OFF; *1Preamplifier 1 is ON; *2Preamplifier 2 is ON
• Current drain (13.8 V DC) : Less than 1.3 A (Standby), Less than 1.5 A (Max. audio out)
• Spurious and image rejection : More than 70 dB (0.1 – 1.799 MHz SSB, AM, S-AM are more than 60 dB)
• Dimensions : 241(W)´94(H)´229(D) mm; 91⁄2(W)´311⁄16(H)´91⁄32(D) inch (projection not included)
• Weight (approximate) : 3.0 kg; 6 lb 10 oz (AC adaptor “AD–55/A/V” is not included)
• Antenna connector : SO-239 (50 ½), push connection terminal (450 ½)
• CI-V connector : 2-connector 3.5 (d) mm (1⁄8")/8 ½
• PHONES connector : 3-conductor 6.35 (d) mm (1⁄8")
• External speaker connector : 2-conductor 3.5 (d) mm (1⁄8")/8 ½

Questi manuali sono disponibili per la macchina in oggetto:

Icom -- IC-R75 -- Manuale di servizio
Nome file: Icom-3444-Manual-Page-1-Picture
Tipo manuale: Manuale di servizio
Pagine: 51
Dimensioni: 2.62 Mbytes (2749913 Bytes)
Lingua: inglese
Revisione:
Manual-ID/Number: A-5580I-S
Data: 1999
Qualità: Documento elettronico, senza ricerca, molto ben leggibile.
Data di caricamento:
MD5: a1ee29fd8b40211da55143a8731b92a5
ed2kID: f19aa2c2cfd41ca3f0f5b067a4ec2c3f
Download: 352 da 08 April 2012
Informazioni:
This service manual describes the latest service information
for the IC-R75 at the time of publication.
TABLE OF CONTENTS
SECTION 1 SPECIFICATIONS
SECTION 2 INSIDE VIEWS
SECTION 3 CIRCUIT DESCRIPTION
3-1 RECEIVER CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
3-2 PLL CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
3-3 LOGIC CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
3-4 POWER SUPPLY CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
3-5 PORT ALLOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
SECTION 4 ADJUSTMENT PROCEDURES
4-1 PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4-2 PLL ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4-3 RECEIVER ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
4-4 SET MODE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
SECTION 5 PARTS LIST
SECTION 6 MECHANICAL PARTS AND DISASSEMBLY
SECTION 7 SEMI-CONDUCTOR INFORMATION
SECTION 8 BOARD LAYOUTS
8-1 PHONE AND VR BOARDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
8-2 DISPLAY BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3
8-3 LOGIC BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-5
8-4 PLL UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-6
8-5 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-7
SECTION 9 BLOCK DIAGRAM
SECTION 10 VOLTAGE DIAGRAM
10-1 FRONT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
10-2 PLL UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-2
10-3 MAIN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-3
Icom-3444-Manual-Page-1-Picture
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