E TECH IP400 Users Manual
E-TECH Co., Ltd 1/18
▶ Table of Contents◀
1. Introduction
2. Description of Unit
3. Technical Specifications
4. Theory of Operation
5. Circuit Descriptions
6. Alignment Procedure
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FILE: IP 400 service manual.doc 2004.05.07
E-TECH Co., Ltd 2/18
1. Introduction
IP 400 has a compact size with a various features in the range of 405~490MHz. IP 400
Has a various features shown as below.
IP 400 constructed with a microprocessor controlled, temperature compensated Phase Locked
Loop(PLL) frequency synthesizer. The radio features a double conversion receiver and a direct FM
transmitter modulator. A special integrated circuit provides support to sub-audible signaling(CTCSS & DCS)
and most of the receiving parts are switched off periodically in the power save mode to reduce battery current
drain during standby.
2. Description of Unit
Items Model
Radio IP 400
Supplied
1700mAh Li-Ion battery pack BL 1700
Package
External / Speaker Microphone ES-1
Accessories
Antenna IA-444
Desktop rapid charter IC-170
Adaptor
User manual
Items Model
Earpiece Microphone EP-1
Earpiece VOX Microphone EV-1
VOX & PTT Headset VP-1
FILE: IP 400 Service manual.doc 2004.05.07
E-TECH Co., Ltd 3/18
3. Technical Specifications
3-1 General
1) Frequency range : 405~490 MHz
2) Channels : 255 Channels
3) Channel spacing : 12.5 kHz/25 kHz
4) Communication method : Simplex
5) Antenna Impedance : 50 ohm
6) Antenna : Whip Antenna
7) Power supply voltage : LI-1700mAh Li-Ion battery pack(Voltage: 7.5V DC)
8) Current Drain : When Transmitting(4W) - < 2A
When Receiving(0.5W) - < 300mA
Transmit standby - < 60mA
Receiver standby(PSC MODE) - < 50mA
9) Microphone : Internal Condenser Microphone(External Speaker Micro
phone is available)
10) Operating temperature range: -30 +℃～ 60℃
11) Size : 56(W)x100(H)x34(D)
12) Weight : 285g
3-2 Transmitter
1) Power Output : HIGH – 4W, LOW - 1W
2) Modulation : 8K5F3E/16K0F3E
3) Oscillator method : PLL
4) Frequency Stability : less than ±0.00025% (±2.5PPM)
5) Maximum frequency deviation: ±2.5 kHz(Narrow)/ ±5 kHz(Wide)
6) Audio Distortion : less than 5% (1 kHz 60%)
7) SPURIOUS Emission : -36 [dBm]
8) FM Hum & Noise : -40 [dB] (HP8920A 300Hz 3kHz BP～ F)
9) BAND SPREAD : 85 [MHz]
FILE: IP 400 Service manual.doc 2004.05.07
/
E-TECH Co., Ltd 4/18
3-3 Receiver
1) Receiver Type : Double Super Hetero type
2) Sensitivity : -0.25uV 이하(12dB SINAD 시)
3) Frequency Stability : ±0.00025%(±2.5PPM)
4) SPURIOUS Rejection : -70 dB
5) Adjacent Channel Selectivity: -60 dB (Narrow) , -70 dB (Wide)
6) Distortion : 5% (1 kHz 60%)
7) Hum & Noise : -40 dB(HP8920A 300Hz 3kHz ～ BPF)
8) Audio output : 1000 mW
9) BAND SPREAD : 85MHz
10) Speaker size : 45 pi
4. Theory of Operation
EXTERNAL VIEW
4)Emergency Key
11)POWER ON/OFF
12)Antenn
5,7)Enter button
9) PTT button
1)TX POWER
LOW
HIGH
2)Monitor Button
3)Scan button
&Volume control
13)Ear/Mic Jack
PC-Programming Jack
14)LCD
6)Menu Button
8)Squelch
10)Mic
14)SPEAKER
FILE: IP 400 Service manual.doc 2004.05.07
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