FCC ID: R72EP400 FM Handheld Transceiver (UHF)

E-TECH Co., Ltd 1/16 Table of Contents 1. Introduction 2. Description of Unit 3. Technical Specifications 4. Theory of Operation 5. Circuit Descriptions Any changes or modifications to the equipment not expressly approved by the party responsible for compliance could void users authority to operate the equipment. EP400 Ver. 1.0 E-TECH Co., Ltd 2/16 1. Introduction EP400 has a compact size with a various features in the range of 403~520MHz. EP400 Has a various features shown as below. EP400 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 Supplied Package Items Radio Antenna 1700mAh Li-Ion battery pack Desktop rapid charter Adaptor User manual Model EP400 Items Model External / Speaker Microphone Accessories Earpiece Microphone Earpiece VOX Microphone VOX & PTT Headset EP400 Ver. 1.0 E-TECH Co., Ltd 3/16 3. Technical Specifications 3-1 General 1) Frequency range : 403 ~ 520 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: 7.4V 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 : 55(W)x114(H)x30(D) 12) Weight : 300g 3-2 Transmitter 1) Power Output : HIGH 4W, LOW - 1W 2) Modulation : 8K5OF3E/16KOF3E 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 : 117 [MHz]

EP400 Ver. 1.0 E-TECH Co., Ltd 4/16 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 : -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 : 117MHz 10) Speaker size : 45 pi 4. Theory of Operation EXTERNAL VIEW 4)Emergency Key Power ON / OFF Speaker Ear/Mic jack LCD Antenna PTT Monitor Button KEY PAD EP400 Ver. 1.0 E-TECH Co., Ltd 5/16 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. status list A status is a code for transmitting prearranged 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. EP400 Ver. 1.0 E-TECH Co., Ltd 6/16 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 button, you can select the desired channel. 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). to enter Menu Mode. 2) Display shows to select or to scroll list to exit 3) 4) 5) EP400 Ver. 1.0 E-TECH Co., Ltd 7/16 3. Contact list 1). to enter Menu Mode. or to until to select or to scroll list to exit 2) 3) 4) 5) 4. Status call list 4-1. Making STATUS call 1) 2) 3) 4) to enter Menu Mode. or to until to select or to scroll list 5) Push PTT KEY for sending message on the LCD. 4-2 Make STATUS Message to enter Menu Mode. or to until to select or to scroll list to SELECT 1) 2) 3) 4) 5) EP400 Ver. 1.0 E-TECH Co., Ltd 8/16 5. Lone work 1). to enter Menu Mode. or to until to select or to select ON/OFF 2) 3) 4) 6. Tx power

. 1). 2) 3) 4) 5) to enter Menu Mode. or to until to select or to select HIGH / LOW POWER to select 7. Tx Tone Selecting Transmitting TONE(CTCSS/DCS). 1). to enter Menu Mode. 2) 3) 4) or to until to select or to Select TONE either CTCSS or DCS. 0= NON TONE 1-38 CTCSS 101 183 DCS TONE 5) to select exit EP400 Ver. 1.0 E-TECH Co., Ltd 9/16 8. Rx Tone Changing Receiving TONE(CTCSS/DCS). 1). to enter Menu Mode. 2) 3) 4) or to until to select or to select TONE either CTCSS or DCS. 0= NON TONE 1-38 CTCSS 101 183 DCS TONE. 5) to select exit 9. Group Changing GROUP Tone. 1). to enter Menu Mode. or to until to select or to select scroll list to select exit 2) 3) 4) 5) 10. Beep on/off 1). to enter Menu Mode. or to until to select or to select on off . to select 2) 3) 4) 5) EP400 Ver. 1.0 E-TECH Co., Ltd 10/16 11. Key lock 1). to enter Menu Mode. 2) 3) 4) 5) or to until to select or to select key lock /unlock. to select 12. Squelch level 16 level is available. 0 = terminate sq function 1). to enter Menu Mode. 2) 3) 4) 5) or to until to select or to the scroll list to select exit 13. Auto Squelch 1). to enter Menu Mode. 2) 3) 4) 5) 14. Scan or to until to select or to select on /off . to select 1). to enter Menu Mode. 2) 3) or to until to scan. EP400 Ver. 1.0 E-TECH Co., Ltd 11/16 4) Push PTT for exit 15. DTMF 1). to enter Menu Mode. 2) 3) 4) 5) or to until to select or to select ON /OFF. to select 16. Vox on/off 1). to enter Menu Mode. 2) 3) 4) 5) or to until to select or to select ON /OFF. to select 17. Vox Level 16 level is available.. 1). to enter Menu Mode. or to until to select or to scroll list to select for exit 2) 3) 4) 5) EP400 Ver. 1.0 E-TECH Co., Ltd 12/16 18. Auto Vox 1). to enter Menu Mode. 2) 3) 4) 5) or to until to select or to select ON /OFF. to select 19. Priority Scan 1). to enter Menu Mode. 2) 3) 4) 5) or to until to select or to select ON /OFF. to select 20. Priority scan CH 1). to enter Menu Mode. or to until to select or to scroll list to select for exit 2) 3) 4) 5) EP400 Ver. 1.0 E-TECH Co., Ltd 13/16 21. Power save 1). to enter Menu Mode. 2) 3) 4) 5) or to until to select or to select ON /OFF. to select 22. Talkaround 1). to enter Menu Mode. 2) 3) 4) 5) or to until to select or to select ON /OFF. to select 23. Password 1). to enter Menu Mode. or to until to select or to select ON /OFF. to select 2) 3) 4) 5) EP400 Ver. 1.0 E-TECH Co., Ltd 14/16 24. Password CH 1). to enter Menu Mode. 2) or to until to select 3) 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. Location Indicate where the radio is located by blinking green light every 7 seconds. 1). to enter Menu Mode. 2) 3) 4) 5) or to until to select or to select ON /OFF. to select 26. Scramble 1). to enter Menu Mode. or to until to select or to select ON /OFF. to select 2) 3) 4) 5) EP400 Ver. 1.0 E-TECH Co., Ltd 15/16 27. Status call Send 1). to enter Menu Mode. or to until to select or to select ON /OFF. to select 2) 3) 4) 5) EP400 Ver. 1.0

this radio by the manufacturer or an antenna specifically authorized by the manufacturer for use with this radio.

*DO NOT transmit for more than 50% of total radio use time (50%

duty eyele). Transmitting more than 50% of the time can cause FOC RF exposure compliance requirements to be exceeded, The radio is transmitting when the TX indicator lights red. You ean cause the radio to transmit by pressing the PTT switch.

* ALWAYS use lcom authorized accessories (antennas, batteries, belt clips, speakermics, ete). Use of unauthorized accessories can cause the FOC RF exposure compliance requirements to be ex-

ceeded,

+ ALWAYS Keep the antenna at least 2?.5cem (1 inche) away from the body when transmitting and only use the bett-eclips which supplied when attaching the radio to your belt, etc., to ensure FCO RF exposure compliance requirements are not exceeded. To provide the recipients of your transmission the best sound quality, hold the antenna at least & em (2 inches) from mouth, and slightly off to one side, The information listed above provides the user with the information needed to make him or her aware of RF exposure, and what to do to assure that this radio operates within the FOC RF exposure limits of this radio. Electromagnetic Interference/Compatibility During transmissions, your lcom radio generates RF energy that can possibly cause interference with other devices or systems. To avold such interference, turn off the radio in areas where signs are posted to do so. DO NOT operate the transmitter in areas that are sensitive to electromagnetic radiation such as hospitals, aircraft, and blasting sites.