icomic-705servicemanual【无线电通信】IC-705服务手册资源-CSDN文库

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SERVICE MANUAL

ADDENDUM

May 2021

NOTE: Use these amended pages as one addendum set.

Do not mix them up with the previous master pages.

Definitions

Replacement page The page to replace the original one.

Addendum page The page to be added to the original set.

Amended page The page to be added as change history, including corrections.

|705/ |705-T

CONTENTS

Page number information

The number of revisions can be easily understood by the addendum service manual’s page number.

The number of revisions (a, b, c, ...) is added after the page number.

SECTION 1 SPECIFICATIONS …………………………………………… 1-1b~1-4b

SECTION 6 SPARE UNITS ……………………………………………… 6-1b~6-9b

SECTION 7 MECHANICAL PARTS ……………………………………… 7-1b~7-4b

SECTION 8 BOARD LAYOUT …………………………………………… 8-1b~8-18b

SECTION 9 WIRING DIAGRAM ………………………………………………… 9-1b

SECTION 11 SCHEMATIC DIAGRAM ………………………………… 11-1b~11-26b

SECTION 12 RECOMMENDED SPARE PARTS ……………………… 12-1b~12-7b

VERSION LIST

Model

Name

Version

Number*

Version

5 MHz

operation

435MHz

operation

Air band

receive

function

FM radio

receive

function

Remarks

IC-705 [#12] USA

✔ ✔ ✔ ✔

−

IC-705 [#13] EUR

−

✔ ✔ ✔

−

IC-705-T [#16]

†

THA

− − − − −

IC-705 [#17]

†

✔ ✔ ✔ ✔

−

IC-705 [#32]

†

USA-01

✔ ✔ ✔ ✔

−

IC-705 [#33]

†

EUR-01

−

✔ ✔ ✔

−

IC-705-T [#36]

†

THA-01

− − − − −

IC-705 [#37]

†

UK-01

✔ ✔ ✔ ✔

−

* The rst two digits of the serial number indicate its version number.

†

Newly added version.

1-1b

SECTION 1 SPECIFICATIONS

(Amended page)

May 2021

The underlined parts have been updated from the previous version of the addendum, or from the original page.

■ GENERAL

• Frequency coverage (unit: MHz):

• Operating modes: USB/LSB (J3E), CW (A1A), RTTY (F1B), AM (A3E), FM/WFM* (F2D/F3E),

and DV (F7W) *WFM: RX only

• Number of memory channels: 500 channels (in 100 groups)

• Number of program scan channels: 25 channels (2 edge frequencies in each channel)

• Number of call channels: 4 channels (2 channels × 2 bands (144 MHz and 430 MHz))

• Number of repeater memories: 2500

• Number of GPS memories: 300

• Antenna impedance: 50 Ω unbalanced

• Antenna connector: BNC (50 Ω)

• Power supply requirement: 13.8 V DC (within ±15%) for external DC power

7.4 V DC specied Icom’s battery pack

• Operating temperature range: –10°C ~ +60°C, 14°F ~ 140°F

• Frequency stability: ±0.5 ppm or less (–10°C ~ +60°C, 14°F ~ 140°F)

• Frequency resolution: 1 Hz (minimum)

• Power consumption:

Using external DC power (13.8 V DC)

Receive Standby 0.3 A (typical)

Maximum audio 0.5 A (typical)

Transmit Maximum power (at 10 W) 3.0 A or less

Using specied Icom’s battery pack (7.4 V DC)

Receive Standby 0.5 A (typical)

Maximum audio 0.8 A (typical)

Transmit Maximum power (at 5 W) 2.5 A or less

• Dimensions (projections not included): 200.0 (W) × 83.5 (H) × 82.0 (D) mm, 7.9 (W) × 3.3 (H) × 3.2 (D) inches

• Weight (approximately): 1.1 kg, 2.4 Ib (including BP-272)

[USA] version [EUR] version [UK] version [THA] version

Receiver 0.030000 ~ 199.999999* 0.030000 ~ 199.999999* 0.030000 ~ 199.999999* 0.030000 ~ 29.700000*

400.000000 ~ 470.000000* 400.000000 ~ 470.000000* 400.000000 ~ 470.000000*

144.000000 ~ 147.000000*

430.000000 ~ 440.000000*

Transmitter 1.800000 ~ 1.999999 1.810000 ~ 1.999999 1.810000 ~ 1.999999 1.800000 ~ 1.825000

3.500000 ~ 3.999999 3.500000 ~ 3.800000 3.500000 ~ 3.800000 3.500000 ~ 3.540000

5.255000 ~ 5.405000 – 5.255000 ~ 5.405000 –

7.000000 ~ 7.300000 7.000000 ~ 7.200000 7.000000 ~ 7.200000 7.000000 ~ 7.100000

10.100000 ~ 10.150000 10.100000 ~ 10.150000 10.100000 ~ 10.150000 10.100000 ~ 10.150000

14.000000 ~ 14.350000 14.000000 ~ 14.350000 14.000000 ~ 14.350000 14.000000 ~ 14.350000

18.068000 ~ 18.168000 18.068000 ~ 18.168000 18.068000 ~ 18.168000 18.068000 ~ 18.168000

21.000000 ~ 21.450000 21.000000 ~ 21.450000 21.000000 ~ 21.450000 21.000000 ~ 21.450000

24.890000 ~ 24.990000 24.890000 ~ 24.990000 24.890000 ~ 24.990000 24.890000 ~ 24.990000

28.000000 ~ 29.700000 28.000000 ~ 29.700000 28.000000 ~ 29.700000 28.000000 ~ 29.700000

50.000000 ~ 54.000000 50.000000 ~ 52.000000 50.000000 ~ 52.000000 –

144.000000 ~ 148.000000 144.000000 ~ 146.000000 144.000000 ~ 146.000000 144.000000 ~ 147.000000

430.000000 ~ 450.000000 430.000000 ~ 440.000000 430.000000 ~ 440.000000 –

* Some frequency ranges are not guaranteed.

1-2b

(Amended page)

May 2021

The underlined parts have been updated from the previous version of the addendum, or from the original page.

 TRANSMITTER

• Transmit output power:

Using external DC power (13.8 V DC)

SSB, CW, FM, RTTY, DV 0.1 ~ 10 W

AM 0.025 ~ 2.5 W

Using specied Icom’s battery pack (7.4 V DC)

SSB, CW, FM, RTTY, DV 0.1 ~ 5 W

AM 0.025 ~ 1.25 W

• SAR 10g: 0.643 W/kg

• Modulation system:

SSB Digital PSN modulation

FM Digital Reactance modulation

AM Digital Low power modulation

DV Digital GMSK modulation

• Spurious emission:

Harmonics

1.8 ~ 28 MHz band –50 dB or less

50 MHz band –60 dB or less Except for [THA]

144 MHz band –50 dB or less

430 MHz band –60 dB or less Except for [THA]

Out-of-band emission

1.8 ~ 28 MHz band –40 dB or less

50 MHz band –60 dB or less Except for [THA]

144 MHz band –60 dB or less

430 MHz band –60 dB or less Except for [THA]

• Carrier suppression: 50 dB or more

• Unwanted sideband suppression: 50 dB or more

• Microphone impedance: 2.2 kΩ

 RECEIVER

• Receive system:

0.03 ~ 24.999999 MHz RF Direct Sampling

25 ~ 199.999999 MHz, 400 ~ 470 MHz Down Conversion IF Sampling

• Intermediate frequency (only 25 ~ 199.999999 MHz, 400 ~ 470 MHz):

38.85 MHz ±0.5 MHz

• Sensitivity for the [USA] and [THA] versions:

SSB/CW (SSB: BW=2.4 kHz, Filter: SOFT, 10 dB S/N CW: BW=500 Hz, Filter: SHARP, 10 dB S/N)

1.8 ~ 29.999999 MHz –14 dBμV (0.20 μV) or less (Preamp 1 is ON) Only [USA]

1.8 ~ 29.7 MHz –14 dBμV (0.20 μV) or less (Preamp 1 is ON) Only [THA]

50 MHz band –16 dBμV (0.15 μV) or less (Preamp 2 is ON) Only [USA]

144/430 MHz band –19 dBμV (0.11 μV) or less (Preamp is ON)

AM (BW=6 kHz, 10 dB S/N)

0.5 ~ 1.799999 MHz 22 dBμV (13.0 μV) or less (Preamp 1 is ON)

1.8 ~ 29.999999 MHz 6 dBμV (2.0 μV) or less (Preamp 1 is ON) Only [USA]

1.8 ~ 29.7 MHz 6 dBμV (2.0 μV) or less (Preamp 1 is ON) Only [THA]

50 MHz band 0 dBμV (1.0 μV) or less (Preamp 2 is ON) Only [USA]

108.0 ~ 137.0 MHz 0 dBμV (1.0 μV) or less (Preamp is ON) Only [USA]

144/430 MHz band 0 dBμV (1.0 μV) or less (Preamp is ON)

FM (at 12 dB SINAD)

28.0 ~ 29.7 MHz –6 dBμV (0.5 μV) or less (Preamp 1 is ON)

50 MHz band –12 dBμV (0.25 μV) or less (Preamp 2 is ON) Only [USA]

144/430 MHz band –15 dBμV (0.18 μV) or less (Preamp is ON)

WFM (at 12 dB SINAD)

76.0 ~ 108 MHz –3 dBμV (0.71 μV) or less (Preamp is ON) Only [USA]

DV (1% BER (PN9))

28.0 ~ 29.7 MHz 0 dBμV (1.0 μV) or less (Preamp 1 is ON)

50 MHz band –4 dBμV (0.63 μV) or less (Preamp 2 is ON) Only [USA]

144/430 MHz band –9 dBμV (0.35 μV) or less (Preamp is ON)

剩余186页未读，继续阅读

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