Icom IC-4008MKII service manual Section Specifications, ITA, ITA-1 CSA, CSA-1

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SECTION 1

SPECIFICATIONS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[ITA], [ITA-1]

 

[CSA], [CSA-1]

 

 

 

 

 

 

Number of channels

 

69 channel (simplex; 433.075–434.775)

 

 

 

 

 

 

Type of emission

 

 

16K0F3E

 

 

 

 

 

 

Frequency stability

 

 

±2500 Hz (±5.7 ppm)

 

 

 

 

 

GENERAL

Frequency resolution

 

 

25 kHz

 

 

 

 

 

Current drain

 

less than 140 mA

 

less than 500 mA

 

Power supply requirements

 

3 AA(R6) dry, alkaline;or optional BP-202

 

(negative ground)

 

 

 

 

 

 

 

 

 

 

Operating temperature range

 

–10˚C to +55˚C (–14˚F to +122˚F)

 

 

 

 

 

 

Number of CTCSS frequency

 

 

38 (67.0–250.3 Hz)

 

 

 

 

 

Dimensions

 

55.5(W) 102.5(H) 26.5(D) mm

 

(proj. not included)

 

2316(W) 4132(H) 1132(D) inch

 

Weight (included 3 cells)

 

 

180 g; 7.8 oz

 

 

 

 

 

 

 

Output power

 

10 mW

 

500 mW

TRANSMITTER

 

 

 

 

 

Modulation system

 

Variable reactance frequency modulation

 

 

 

 

 

 

 

 

Max. freqequency deviation

 

 

±5.0 kHz

 

 

 

 

 

 

 

Spurious emissions

 

0.25 µW

 

–40 dB

 

 

 

50 µW

 

 

 

 

 

 

 

 

 

 

 

 

Adjacent channel power

 

 

more than 47 dB

 

 

 

 

 

External mic.connector

 

3-conductor 2.5(d) mm/2.2 kΩ

 

 

 

 

 

Receiving system

 

Double conversion superheterodyne

 

 

 

 

 

 

Intermediate frequency

 

 

1st: 21.7 MHz

 

 

 

2nd: 450 kHz

 

 

 

 

RECEIVER

 

 

 

 

Sensitivity (12 dB SINAD)

 

 

0.2 µV ;–14 dBµ

 

 

 

 

 

Adjacent channel selectivity

 

 

more than 40 dB

 

 

 

 

 

 

 

 

 

Spurious response

 

 

more than 40 dB

 

 

 

 

 

 

Intermoduration

 

 

more than 40 dB

 

 

 

 

 

Audio output power

 

100 mW at 10% distortion with an 8 Ω load

 

 

 

 

 

External SP connector

 

2-conductor 3.5 (d) mm (18")/8 Ω

All stated specifications are subject to change without notice or obligation.

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Contents UHF FM Transceiver LPD FM Transceiver Ordering Parts IntroductionRepair Notes Table of Contents Section Specifications ITA, ITA-1 CSA, CSA-1Channel Frequency List Ctcss Frequency ListMain Unit Inside ViewsRF Unit Disasembly Instructions Removing the Rear PanelRemoving the Main Unit Removing the RF UnitAntenna Switching Circuit RF Unit Circuit DescriptionReceiver Circuits RF Circuit RF UnitTransmitter Circuits PLL Circuits RF UnitPort Allocations Power Supply Circuits Voltage LineCPU Main unit IC1 Section Adjustment Procedures Entering the Adjustment ModePreparation Required Test EquipmentAdjustment DeviationC63 R206R50 TestSection Parts List Order DescriptionRF Board Coil Eljre 18NG-F C211 4030006860 Accessories Mechanical Parts and DisassemblyCabinet Parts Chassis Parts Unit abbreviation C Chassis PARTS, RF RF UNIT, M Main Unit Transistor and FET’S SEMI-CONDUCTOR InformationDiodes Main Unit Board LayoutsTOP View IC-4008A R58 Bottom View IC-4008AC55 C17 R23 C18 C52 PSC Batt MOD VOL GND RF Unit TOP ViewFI3 Bottom ViewBlock Diagram IC1Voltage Diagram DTA144EURF Unit 16, Kamihigashi, Hirano-ku, Osaka 547-0002, Japan 16, Kamihigashi, Hirano-ku, Osaka, 547-0002, Japan