Equipment information:

Icom IC-745 Transceiver
Manufacturer:
Icom
Model: IC-745
Date:
Category: Radio, Communication
Group: Transceiver
Description: HF All Band Transceiver General Coverage Receive
Information:
                                    ALL BAND, ALL MODE, ALL SOLID-STATE

The IC-745 covers all the Amateur HF frequencies from 1.8MHz
to 29.700MHz, including the new three bands of 10MHz, 18MHz
and 24MHz. It offers not only SSB, but also CW, AM (Receive
only), FM (Option) and RTTY. All of the circuits in the
IC-745, including the driver and final power stages are
completely solid-state, and provide about 100 watts output.

GENERAL COVERAGE RECEIVER CAPABILITY

The IC-745 has capabilities for an all amateur band
transceiver as well as a general coverage receiver between
100KHz and 30MHz with continuous tuning. The Up-conversion
system using a high side IF and Microcomputer Control System
make these capabilities possible.

In addition to these, the low-pass filters and the band-pass
filters are selected by an electric signal from the CPU and
it makes a no tune-up system.

DUAL VFO

Dual VFO's controlled by a large tuning knob provide easy
access to split frequencies used in DX operation. Normal
tuning rate is in 10Hz increments and increasing the speed
of rotation of the main tuning knob shifts the tuning to
50Hz increments automatically. Pushing the tuning speed
button gives 1KHz tuning.

16 MEMORIES

Sixteen tunable memories are provided to store mode,
HAM/GENERAL COVERAGE mode, and frequency, and the RAM is
backed up by an internal lithium memory backup battery to
maintain the memories for up to seven years. Scanning of
frequencies, memories and bands are possible from the unit,
or from the IC-HM12 scanning microphone. Data may be
transferred between VFO's, or from VFO to memories.

OUTSTANDING RECEIVER PERFORMANCE

Utilizing an ICOM developed Double Balanced Mixer, the
IC-745 has a 100dB dynamic range. The 70.4515MHz first IF
virtually eliminates spurious responses, and a high gain
9.0115MHz second IF, with ICOM's PBT provides the ultimate
in selectivity. A deep IF notch filter, adjustable AGC and
noise blanker (can be adjusted to eliminate the woodpecker),
audio tone control, plus RIT provide clear reception even in
the presence of strong QRM or high noise levels. A low noise
receiver preamp provides exceptional reception sensitivity
as required.

TRANSMITTER

The transmitter features high reliability transistors in a
low IMD (—38dB ~100W), full 100% duty cycle (internal
cooling fan standard), 12 volt DC design. Quiet relay
selection of transmitter LPF's, transmit audio tone control,
monitor circuit (to monitor your own CW or SSB signal), XIT,
and a high performance speech processor enhance the IC-745
transmitter's operation. For the CW operator, optional keyer
and semi break-in are provided for smooth and fast keying.

OTHER FEATURES

All of the above features plus full function metering, SSB
and FM squelch, convenient large controls, a large selection
of filters, and a high visibility flourescent display make
the IC-745 your best choice for a superior grade HF base
transceiver.

These manuals are available for the above equipment:

Icom -- IC-745 -- Service and User Manual
File name: Icom-5429-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 38
Size: 4.75 Mbytes (4983791 Bytes)
Language: english
Revision:
Manual-ID/Number: A-0507
Date:
Quality: Scanned document, all readable.
Upload date:
MD5: a622359742d31c9633f82f239202df68
ed2kID: 437b480ba3469c2d65839e8f7511be77
Downloads: 208 since 26 January 2014
Information:
SECTION 1
SPECIFICATIONS.................................................
1

SECTION 2
FEATURES...................................................... 2

SECTION 3
INSTALLATION.................................................. 3

SECTION 4 OPERATING
CONTROLS........................................... 6

4- 1 FRONT
PANEL............................................... 6

4- 2 TOP
COVER................................................. 9

4-	3 REAR PANEL CONNECTIONS.................................. 10

SECTION 5 OPERATING
INSTRUCTIONS....................................... 11

5-	1 HOW TO
TUNE.............................................. 11

5- 2 MEMORY CHANNEL OPERATION.............................. 15

5- 3 TUNING BY UP/DOWN BUTTONS ON THE MICROPHONE.........16

5- 4 SCANNING
OPERATION.......................................*17

5-5 SSB OPERATION.............................................18

5-6 CW OPERATION..............................................21

5- 7 RTTY OPERATION...........................................21

5-8 AM OPERATION..............................................22

5- 9 FM OPERATION (OPTION)....................................22

5-10 GENERAL COVERAGE RECEIVER..............................23

5-11 OTHER OPERATIONS.........................................23

SECTION 6 OPTION
INSTALLATION...........................................25

SECTION 7 INSIDE
VIEWS...................................................31

SECTION 8
TROUBLESHOOTING..............................................33

SECTION 9 BLOCK
DIAGRAM................................................34

SECTION 10 SCHEMATIC
DIAGRAM.....................................SEPARATE
Icom-5429-Manual-Page-1-Picture
Start Free Download


Icom -- IC-745 -- Service Manual
File name: Icom-5430-Manual-Page-1-Picture
Manual Type: Service Manual
Pages: 126
Size: 18.05 Mbytes (18926408 Bytes)
Language: english
Revision:
Manual-ID/Number: A-0504
Date:
Quality: Scanned document, all readable.
Upload date:
MD5: bea509ebc1e5f29657b951b380a0b054
ed2kID: 14ea0c3c06e086199a829ff8c26855e3
Downloads: 250 since 26 January 2014
Information:
SECTION 1
SPECIFICATIONS........................................ 1 - 1

SECTION 2 OPERATING
CONTROLS.................................. 2-1-5

SECTION 3 OPERATING
INSTRUCTIONS.............................. 3- 1-15

3- 1 HOW TO TUNE...................................... 3- 1

3- 2 MEMORY CHANNEL OPERATION...................... 3- 5

3- 3 TUNING BY UP/DOWN BUTTONS ON THE MICROPHONE. 3- 6

3- 4 SCANNING OPERATION............................... 3- 7

3- 5 SSB OPERATION..................................... 3- 8

3 - 6 CW OPERATION...................................... 3-11

3- 7 RTTY OPERATION................................... 3-11

3- 8 AM OPERATION...................................... 3-12

3- 9 FM OPERATION (OPTION)..,.......................... 3-12

3-10 GENERAL COVERAGE RECEIVER....................... 3-13

3-11	OTHER OPERATIONS................................. 3-13

SECTION 4 CIRCUIT
DESCRIPTION.................................. 4- 1-12

4-	1 RECEIVER CIRCUITS................................. 4- 1

4- 2 TRANSMITTER CIRCUITS............................. 4- 3

4- 3 PLL CIRCUITS....................................... 4- 5

4- 4 LOGIC CIRCUITS..................................... 4- 8

SECTION 5 BLOCK
DIAGRAM....................................... 5- 1

SECTION 6 INSIDE
VIEWS.......................................... 6-1-2

SECTION 7 OPTIONS
INSTALLATION................................. 7-1-6

SECTION 8 MECHANICAL PARTS AND DISASSEMBLY.................
8- 1-11

SECTION 9 MAINTENANCE AND ADJUSTMENT.......................
9-1-6

SECTION 10 VOLTAGE (CIRCUIT)
DIAGRAMS.......................... 10- 1-12

SECTION 11 IC
RATINGS............................................ 11- 1- 6

SECTION 12 PARTS
LIST............................................ 12- 1-21

SECTION 13 SCHEMATIC
DIAGRAM................................... 13- 1

SECTION 14 BOARD
LAYOUT........................................ SEPARATE
Icom-5430-Manual-Page-1-Picture
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Comments (2)

Topic: Icom IC-745
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Gravatar
Zika says...
Thanks, just try to repair a RAM unit an build a 9MHz CW Filter
2nd May 2016 2:07am
Gravatar
yu2aa says...
TU & 73
14th December 2015 4:44pm
Page 1 of 1

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