E-TECH Co., Ltd 1/19
▶ 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 100 service manual.doc 2004.05.01
E-TECH Co., Ltd 2/19
1. Introduction
IP-100 has a compact size with a various features in the range of 136~174MHz. IP-100
Has a various features shown as below.
IP-100 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 100
Supplied
1700mAh Li-Ion battery pack BL 1800
Package
External / Speaker Microphone ES-1
Accessories
Antenna IA-156
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 100 Service manual.doc 2004.05.01
E-TECH Co., Ltd 3/19
3. Technical Specifications
3-1 General
1) Frequency range : 136~174 MHz
2) Channels : 255 Channels
3) Channel spacing : 12.5 kHz/25 kHz
4) Communication method : Simplex
5) Antenna Impedance : 50 ohm
6) Antenna : Helical Antenna
7) Power supply voltage : LI-1700mAh Li-Ion battery pack(Voltage: 7.5V DC)
8) Current Drain : When Transmitting(5W) - < 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 – 5W, 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 : -65 [dBc]
8) FM Hum & Noise : -40 [dB] (HP8920A 300Hz 3kHz BP～ F)
9) BAND SPREAD : 38 [MHz]
FILE: IP 100 Service manual.doc 2004.05.01
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E-TECH Co., Ltd 4/19
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 : -60 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 : 38MHz
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 100 Service manual.doc 2004.05.01
E-TECH Co., Ltd 5/19
4-1 Features & Operation
1. Monitor
Press the Monitor key momentarily to disable the Tone squelch.
2. Radio Call
By using Various 5Tone, individual / Group call is available.
16 Receiving codes are available as well as open call.
3. Missed calls list
16 Missed calls can be listed. If a call remains unanswered, the call will be stored
by the radio.
4. contact list
During a call, the co ntact list may be used to give access to up to 16 preprogrammed
numbers accessed via the menu.
5. status list
A status is a code for transmitting prearrange d messages, e.g. status “05” may indicate
“launch”. Status list contains up to 30 entries.
6. Channel : 255 channel
7. Scan ON/off
8. Power level : Power level is adjustable in each channel respectively.
9. Talkaround on/off
10. Emergency :
11. Lone Worker
12. Tx Tone select : In the menu, tx dcs /ctcss tone is adjustable.
13. Rx Tone select : In the menu, rx dcs /ctcss tone is adjustable.
14. Group : Defines group tone. You can select tone code for group, and it is used as a default value
. 0~9 and a, b, c, d available. And “A” is used as a basic value..
15. BEEP ON/OFF : BEEP sound ON/OFF.
16. KEY LOCK : LOCK/UNLOCK Button KEY.
17. SQUELCH : Squelch level is adjustable
18. AUTO SQUELCH : Squelch level is adjustable automatically by surroundings.
19. DTMF ON/OFF : DTMF function is available.
20. VOX : VOX LEVEL is adjustable by pushing up and down button.
21. AUTO VOX : VOX level is adjustable automatically by surroundings.
22. P - SCAN : Priority Scan
23. POWER SAVE : Power save mode is available.
24. PASS WORD : This function is useful for security reason.
25. LOCATION INDICATE : Indicate where the radio is located by blinking green light every 7 seconds.
26. SCRMABLE : Internal Voice Scrambler is available.
27. STUN / UNSTUN : For added security and to avoid abuse of the radio system in which you operate
a feature known as Stun/Unstun is included in your radio.
28. BACKLIGHT : Lamp is lighting when you check LCD status.
FILE: IP 100 Service manual.doc 2004.05.01
E-TECH Co., Ltd 6/19
4-2 LCD Display and Icons
1.ANT GAZE ; Shows the received signal strength.
2.TX POWER HIGH: Indicate power level
3.KEY LOCK: Appears during key lock function is ON.
4.ALART(BEEP) ON/OFF: Appears when beep sound is turned ON.
5.Battery level indicator: Indicates reaming battery power.
6.VOX ON/OFF: Appears when VOX function is turned On.
7.SCAN: Appears when Scan function is activated.
8.SCRAMBLE: Appears while the voice scrambler function is activated.
9.TALK AROUND Indicator.
4-3 Features
1. Channel
This radio offers up to 255 channels
1). By using
2. Missed calls list
Up to 16 calls can be stored. If the same radio calls more than once, only the most recent call is stored.
When fifteen calls have been stored by the radio, depending on the radio programming the sixteenth call
received may overwrite the first or not be stored by the radio.
1).
2) Display shows
to enter Menu Mode.
button, you can select the desired channel.
3)
4)
5)
to select
or to scroll list
to exit
FILE: IP 100 Service manual.doc 2004.05.01
E-TECH Co., Ltd 7/19
3. Contact list
1).
2) or to until
3)
4)
5) to exit
4. Status call list
4-1. Making STATUS call
1)
2)
to enter Menu Mode.
to select
or to scroll list
to enter Menu Mode.
or to until
3)
4)
5) Push PTT KEY for sending message on the LCD.
4-2 Make STATUS Message
1)
2)
3)
4)
5)
to select
or to scroll list
to enter Menu Mode.
or to until
to select
or to scroll list
to SELECT
FILE: IP 100 Service manual.doc 2004.05.01
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5. Lone work
1).
2) or to until
3)
4)
6. Tx power
.
1).
2)
3)
4)
to enter Menu Mode.
to select
or to select ON/OFF
to enter Menu Mode.
or to until
to select
or to select HIGH / LOW POWER
5)
7. Tx Tone
Selecting Transmitting TONE(CTCSS/DCS).
1).
2)
3)
4)
0= NON TONE
1-38 CTCSS
101 – 183 DCS TONE
5)
to select
to enter Menu Mode.
or to until
to select
or to Select TONE을 either CTCSS or DCS.
to select exit
FILE: IP 100 Service manual.doc 2004.05.01
E-TECH Co., Ltd 9/19
8. Rx Tone
Changing Receiving TONE(CTCSS/DCS).
1).
2) or to until
3)
4)
0= NON TONE
1-38 CTCSS
101 – 183 DCS TONE.
5)
9. Group
Changing GROUP Tone.
1).
2) or to until
to enter Menu Mode.
to select
or to select TONE either CTCSS or DCS.
to select exit
to enter Menu Mode.
3)
4)
5)
10. Beep on/off
1). to enter Menu Mode.
2)
3)
4)
5)
to select
or to select scroll list
to select exit
or to until
to select
or to select on off .
to select
FILE: IP 100 Service manual.doc 2004.05.01
E-TECH Co., Ltd 10/19
11. Key lock
1). to enter Menu Mode.
2) or to until
3)
4)
5)
12. Squelch level
16 level is available. 0 = terminate sq function
1).
2)
3) to select
4)
5)
13. Auto Squelch
to select
or to select key lock /unlock.
to select
to enter Menu Mode.
or to until
or to the scroll list
to select exit
1). to enter Menu Mode.
2)
3)
4)
5)
14. Scan
1).
2) or to until
3)
or to until
to select
or to select on /off .
to select
to enter Menu Mode.
to scan.
FILE: IP 100 Service manual.doc 2004.05.01
E-TECH Co., Ltd 11/19
4) Push PTT for exit
15. DTMF
1).
2) or to until
3)
4)
5) to select
16. Vox on/off
1). to enter Menu Mode.
2)
3)
4)
to enter Menu Mode.
to select
or to select ON /OFF.
or to until
to select
or to select ON /OFF.
5)
17. Vox Level
16 level is available..
1).
2)
3) to select
4)
5)
to select
to enter Menu Mode.
or to until
or to scroll list
to select for exit
FILE: IP 100 Service manual.doc 2004.05.01
E-TECH Co., Ltd 12/19
18. Auto Vox
1). to enter Menu Mode.
2)
3)
4)
5)
19. Priority Scan
1).
2)
3)
4)
5) to select
or to until
to select
or to select ON /OFF.
to select
to enter Menu Mode.
or to until
to select
or to select ON /OFF.
20. Priority scan CH
1).
2)
3)
4)
5)
to enter Menu Mode.
or to until
to select
or to scroll list
to select for exit
FILE: IP 100 Service manual.doc 2004.05.01
E-TECH Co., Ltd 13/19
21. Power save
1). to enter Menu Mode.
2) or to until
3)
4)
5) to select
22. Talkaround
1).
2)
3)
4)
5)
23. Password
to select
or to select ON /OFF.
to enter Menu Mode.
or to until
to select
or to select ON /OFF.
to select
1). to enter Menu Mode.
2) or to until
3)
4)
5)
to select
or to select ON /OFF.
to select
FILE: IP 100 Service manual.doc 2004.05.01
E-TECH Co., Ltd 14/19
24. Password CH
1). to enter Menu Mode.
2) or to until
3)
4) ---- will display on the LCD( enter old password)
5) Enter new password by 4 digit.
25. Location
Indicate where the radio is located by blinking green light every 7 secon ds.
1).
2)
3)
4)
to select
or by pushing up and down KEY to change password.
by pushing enter KEY to change digit of password.
to enter Menu Mode.
or to until
to select
or to select ON /OFF.
5) to select
26. Scramble
1).
2)
3)
4)
5) to select
to enter Menu Mode.
or to until
to select
or to select ON /OFF.
FILE: IP 100 Service manual.doc 2004.05.01
E-TECH Co., Ltd 15/19
27. Status call Send
1).
2)
3)
4)
5) to select
5. Circuit Description.
5-1 Transmitter
1) MIC AMP Circuit
Voice signal from the microphone are applied to microphone a m plifier U303. U303 contains a
low-pass filter that has a 6dB/oct response bet ween 300H z and 3kHz and eliminate above
3kHz. The pre-emphasized audio signal is applied to VR302 to adjust maximum frequency
deviation.
to enter Menu Mode.
or to until
to select
or to select ON /OFF.
2) VCO circuit
The transmit frequency is directly generated by the Colpitts oscillation circuit contains Q402,Q403.
3) POWER AMP
Signals from Q202, Q206 is supplied through antenna switch Q203,Q 204 to a l ow-pass filter made up
and then applied to Antenna Jack.
5-2 Receiver
1) LOWPASS FILTER and Antenna switching circuit.
Signals from antenna connector fed to the antenna switching circuit through the low pass filter
consisting of L212~214. In receiving mode, D204, D202 is turned off, isolates the antenna from the
transmitter circuit and matching circuitry, so that the incoming signals are fed to the RF amplifier
through L211.
2) RF AMP Circuit
The signals from the switching circuit are fed to the RF amplifier Q101 through a band pass filter made
up of molded coil, vvc diode and capacitor.
3) MIXER Circuit
The amplified signals are fed to Gate 1 of the first mixer Q102. First local oscillator signal is supplied
to Gate 2 of Q102 from the PLL circuit to convert the RF signals into 21.4MHz first IF signal.
FILE: IP 100 Service manual.doc 2004.05.01
E-TECH Co., Ltd 16/19
4) IF Circuit
The first signals from Q102 are fed to the matched pair crystal filter FL101, then IF signals are amplified
in Q103. And those signals are fed to U101 which is composed of the second local oscillator, second
local oscillator, second mixer, limiter amplifier, quadrature detector and active filter circuit. The second
local oscillator at 20.945MHz with X 101 and is fed to the second mixer with the first IF signals to
convert into 455kHz second IF signals.
5) Audio and squelch Circuit
The detected audio signals are put through a 6dB/oct de-emphasis circuit made up of Q602.
The signal is then applied to audio power amplifier U603 to obtain enough power to driver the speaker.
Part of the recovered noise signal is fed to the integrated operational amplifier inside U101 which
makes up an low pass filter. The sensitivity of squelch is adjusted by VR 101.
5-3 VCO Circuit
The transmit / receive frequency is directly generated by the Colpitts oscillation circuit contains Q402,
Q405.
FILE: IP 100 Service manual.doc 2004.05.01
E-TECH Co., Ltd 17/19
6. Alignment
6-1 Alignment point
FILE: IP 100 Service manual.doc 2004.05.01
E-TECH Co., Ltd 18/19
6-2 Voltage Check
1) Set up the radio frequency to (136.025[Mhz]) then measure whether R/Tx voltage is over 0.8[v].
2) Set up the radio frequency (173.975[Mhz]) then measure whether R/Tx voltage is under 5[v].
3) When Un-Lock is display on LCD means defective goods.
6-3 Transmitter
1) At the frequency range of (146.025[MHz]), set up Tx mode then adjust frequency by using VR 301 at the
level of ±150[Hz]. High power should be 3.8~5.5[W]. In case of out of this range, you can check whether
current is under 2A then adjust at the level of 4.5W by using VR501.
Low power should be 1[W] ±0.2[W]. In case of out of range, you can adjust it by using VR502.
FM DEVIATION should be adjusted at the level of 2.1[khz] ±0.1[khz] by using VR303.
Low frequency input is 1[kHz],50[mV].
2) After you set up MOD at the frequency range of (146.025[MHz]), adjust TONE DEVIATION by using VR
302 at the level of 0.45[kHz] ±0. k05[zH] .
6-4 Receiver,
Set up Receiving Mode at (SSG -60d[Bm]). At the frequency range of 146.025[MHz], FM 1.5[kHz], adjust
Volume at (0.5[W]). Sensitivity at the level of 12[dB] SINAD, check whether it is under -119[dBm]., and
SQ(LEVEL8) is between -117[dBm] ~ -123[dBm by using VR101. In case of out of range, adjust it at
120[dBm].
6-5 Wideband specification check
At the frequency range of (146.025[MHz]), you have to check whether FM DEVIATION should be (3.6 ~
4.8[kHz]), in case of 1G-4(146.025[MHz]), TONE DEVIATION should be (0.5~1.2[KHz]). Also, you have to
check whether in case of 1G-2(146.025[MHz]), sensitivity should be (12[dB] SINAD, -119[dBm]). SQ
sensitivity is between -116[dBm] and -124[dBm.
6-6 FINAL(QC) Inspect specification
1) 156.025[MHz] Narrow
a. Frequency : ±300[Hz]
b. Output power(L/H) : 0.7 ~ 1.2[W] / 4 ~ 5.6[W]
c. FM DEVIATION(Narrow) : 1.8 ~ 2.5[kHz](1[kHz], 50[mV])
d. TONE DEVIATION : 0.3 ~ 0.6[kHz]
e. Sensitivity : < -117[dBm]
f. SQ Sensitivity : -116[dBm] ~ -124[dBm](
2) 156.025[MHz] Wide band
a. FM DEVIATION(Wide band) : 3.8 ~ 5.0[kHz](1[kHz], 50[mV])
b. TONE DEVIATION : 0.5 ~ 1.2[kHz]
c. Sensitivity : < -117[dBm]
d. SQ Sensitivity : -116[dBm] ~ -124[dBm]
FILE: IP 100 Service manual.doc 2004.05.01
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