E-TECH Co., Ltd 1/24 ▶ Table of Contents◀ 1. Introduction 2. Description of Unit 3. Technical Specifications 4. Features and operation 5. Antenna Installation FILE: IM401 service manual.doc 2006.01.
8 E-TECH Co., Ltd 2/24 1. Introduction IM401 has a compact size with a various features in the range of 403~470MHz. Has a various features shown as below. IM401 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.
8 E-TECH Co., Ltd 3/24 3. Technical Specifications 3-1 General 1) Frequency range : 403~470 MHz 2) Channels : 255 Channels 3) Channel spacing : 12.5 kHz/25 kHz 4) Communication method : Simplex 5) Antenna Impedance : 50 ohm 6) Power supply voltage : DC 13.
8 E-TECH Co., Ltd 4/24 3-3 Receiver 1) Receiver Type : Double Super Hetero type 2) Sensitivity : -0.25uV e.m.f ( 12dB SINAD ) 3) Frequency Stability : ±0.00025%(±2.5PPM) 4) SPURIOUS Rejection : 5) Adjacent Channel Selectivity: -70 dB -65 dB (Narrow) , -70 dB (Wide) 6) Distortion : 5% (1 kHz 60%) 7) Hum & Noise : -40 / -45 dB(HP8920A 300Hz ∼ 3kHz BPF) 8) Audio output : Normal 3W ( Max 5W ) 9) BAND SPREAD : 67MHz 10) Speaker size : 58 * 35 Oval 4.
8 E-TECH Co., Ltd 5/24 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 contact list may be used to give access to up to 16 preprogrammed numbers accessed via the menu. 5.
8 E-TECH Co., Ltd 6/24 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.VOX ON/OFF: Appears when VOX function is turned On. 6.SCAN: Appears when Scan function is activated. 7.SCRAMBLE: Appears while the voice scrambler function is activated. 8.TALK AROUND Indicator. 4-3 Features 1. Channel This radio offers up to 255 channels 1).
8 E-TECH Co., Ltd 7/24 3. Contact list 1). 2) to enter Menu Mode. or 3) to select 4) or 5) to until to scroll list to exit 4. Status call list 4-1. Making STATUS call 1) 2) 3) to enter Menu Mode. or to until to select or to scroll list 4) 5) Push PTT KEY for sending message on the LCD. FILE: IM401 service manual.doc 2006.01.
E-TECH Co., Ltd 8/24 4-2 Make STATUS Message 1) to enter Menu Mode. or 2) 3) to select 4) or 5) to SELECT to until to scroll list 5. Lone work 1). to enter Menu Mode. 2) or 3) to select 4) or FILE: IM401 service manual.doc to until to select ON/OFF 2006.01.
8 E-TECH Co., Ltd 9/24 6. Tx power .1) . to enter Menu Mode. or 2) to until to select 3) or 4) 5) to select HIGH / LOW POWER to select 7. Tx Tone Selecting Transmitting TONE(CTCSS/DCS). 1). 2) 3) 4) to enter Menu Mode. or to until to select or 0= NON TONE to Select TONE을 either CTCSS or DCS. 1-38 CTCSS 101 – 183 DCS TONE 5) to select exit FILE: IM401 service manual.doc 2006.01.
8 E-TECH Co., Ltd 10/24 8. Rx Tone Changing Receiving TONE(CTCSS/DCS). 1). 2) 3) 4) to enter Menu Mode. or to until to select or 0= NON TONE to select TONE either CTCSS or DCS. 1-38 CTCSS 101 – 183 DCS TONE. 5) to select exit 9. Group Changing GROUP Tone. 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select scroll list to select exit FILE: IM401 service manual.doc 2006.01.
8 E-TECH Co., Ltd 11/24 10. Beep on/off 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select on off . to select 11. Key lock 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select key lock /unlock. to select FILE: IM401 service manual.doc 2006.01.
8 E-TECH Co., Ltd 12/24 12. Squelch level 16 level is available. 0 = terminate sq function to enter Menu Mode. 1). or 2) 3) to select or 4) 5) to until to the scroll list to select exit 13. Auto Squelch 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select on /off . to select FILE: IM401 service manual.doc 2006.01.
8 E-TECH Co., Ltd 13/24 14. Scan 1). 2) 3) to enter Menu Mode. or to until to scan. 4) Push PTT for exit 15. DTMF 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select ON /OFF. to select FILE: IM401 service manual.doc 2006.01.
8 E-TECH Co., Ltd 14/24 16. Vox on/off 1). 2) to enter Menu Mode. or 3) to until to select or 4) to select ON /OFF. to select 5) 17. Vox Level 16 level is available.. 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select to scroll list for exit FILE: IM401 service manual.doc 2006.01.
8 E-TECH Co., Ltd 15/24 18. Auto Vox 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select ON /OFF. to select 19. Priority Scan 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select ON /OFF. to select FILE: IM401 service manual.doc 2006.01.
8 E-TECH Co., Ltd 16/24 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 21. Power save 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select ON /OFF. to select FILE: IM401 service manual.doc 2006.01.
8 E-TECH Co., Ltd 17/24 22. Talkaround 1). to enter Menu Mode. or 2) to until to select 3) or 4) to select ON /OFF. to select 5) 23. Password 1). to enter Menu Mode. 2) 3) 4) 5) or to until to select or to select ON /OFF. to select FILE: IM401 service manual.doc 2006.01.
8 E-TECH Co., Ltd 18/24 24. Password CH 1). 2) 3) to enter Menu Mode. or to until to select 4) ---- will display on the LCD( enter old password) or by pushing up and down KEY to change password. by pushing enter KEY to change digit of password. 5) Enter new password by 4 digit. 25. Dimmer Back light Control 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select level to select FILE: IM401 service manual.doc 2006.01.
8 E-TECH Co., Ltd 19/24 26. Scramble 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select ON /OFF. to select 27. Status call Send 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select ON /OFF. to select FILE: IM401 service manual.doc 2006.01.
8 E-TECH Co., Ltd 20/24 28. Misscall List Delete 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select ON /OFF. to select 29. Radio Reset 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select ON /OFF. to select FILE: IM401 service manual.doc 2006.01.
8 E-TECH Co., Ltd 21/24 30. Variable call 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select 1,2,3~A,B,C,D,E to select 31. Mic Sensitivity Level (Mic Gain Control) 1). 2) 3) to enter Menu Mode. or to until to select or to select HIGH/LOW. 4) “HIGH “is high sensitivity and “LOW” is normal sensitivity FILE: IM401 service manual.doc 2006.01.
8 E-TECH Co., Ltd 22/24 -Connector of Operation ① ⑤ ⓐ ⓑ ⑥ ⑩ ⓒ Antenna 10PIN CONNECTOR DESCRIPTION Connection Pin NO Function Remark GND ① Ground GND CPU_INT_PTT ② Push To Talk GND Enable 5V ③ Internal FLAT_AUDIO_IN/OUT ④ Constant S/W_BATT ⑤ Switched Battery CPU_RSSI_DET ⑥ Received Signal Strength Indication CPU_RX_PATH ⑦ Busy Rx MIC ⑧ MIC Input CPU_SP_MUTE ⑨ Speaker ON/OFF CPU_TX_PATH ⑩ MIC MUTE 5 Volt Regulator 5 Volt Audio Signal Level 13.
8 E-TECH Co., Ltd 23/24 5. Antenna Installation 5-1 Antenna Installation and Compliance with Radio Frequency(RF) Energy Safety Standards [IMPORTANT NOTE] To assure optimum performance and compliance with RF Energy Safety standards, this antenna installation guidelines and Instructions are limited to metal-body vehicles with appropriate ground planes and take into account the potential exposure of backseat passengers and bystanders outside the vehicle.
8 E-TECH Co., Ltd 24/24 For more than 40 Watt VHF models, the 1/4 wave antenna should be mounted only in the center area of the roof, not on the trunk lid, to assure compliance with RF Energy Safety standards. 5. Ensure that the antenna cable can be easily routed to the radio. Route the antenna cable as far away as possible from any vehicle electronic control units and associated wiring. 6. Check the antenna location for any electrical interference. 7.
