Equipment information

Icom IC-R75 Receiver
Manufacturer:
Icom
Model: IC-R75
Date: 1999
Category: Radio, Communication
Group: Receiver
Description: COMMUNICATIONS RECEIVER
Information:

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

These manuals are available for the above equipment:

Manual Type: Service Manual Icom-3444-Manual-Page-1-Picture
Pages: 51
Size: 2.62 Mbytes (2749913 Bytes)
Language: english
Revision:
Manual-ID/Number: A-5580I-S
Date: 1999
Quality: Electronic document, no scan, very well readable.
Upload date:
MD5: a1ee29fd8b40211da55143a8731b92a5
Downloads: 635 since 08 April 2012
Information:

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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