Unimo Technology PZ-S400 FM TRANSCEIVER User Manual CIRCUIT ANALYSIS

Unimo Technology Co., Ltd. FM TRANSCEIVER CIRCUIT ANALYSIS

Users Manual

Manual PZ-S series Portable Radio PZ-S400, PZ-S100
Maintenance Manual 2 TABLE OF CONTENTS SPECIFICATIONS ................................................................................................................................................. 5MODEL: PZ-S100 ........................................................................................................................................... 5MODEL: PZ-S400 ........................................................................................................................................... 6MODEL NUMBER ................................................................................................................................................. 7PZ-S SERIES RADIO PACKAGE NUMBERS ..................................................................................................... 7FEATURES ............................................................................................................................................................. 7CONTROLS & INDICATORS ............................................................................................................................... 9Controls ......................................................................................................................................................... 10On/Off Volume Switch ........................................................................................................... 10Channel Select Switch .......................................................................................................... 10PTT Button ............................................................................................................................ 10Monitor Button ...................................................................................................................... 10Red Button ............................................................................................................................. 10Side Button (Scan Button) ..................................................................................................... 11Speaker Microphone Jack ..................................................................................................... 11Indicators ....................................................................................................................................................... 11Status Indication LED ............................................................................................................ 11BATTERY PACKS ................................................................................................................................................ 12Installing the Battery Pack ............................................................................................................................. 13Removing the Battery Pack ........................................................................................................................... 14Charging the Battery Pack ............................................................................................................................. 15How to Charging ................................................................................................................... 15CHARGER ............................................................................................................................................................ 16RADIO OPERATIONS ......................................................................................................................................... 17
Maintenance Manual 3 Installation and Removal of Antenna ............................................................................................................. 17Power On/Off ................................................................................................................................................. 17Transmission .................................................................................................................................................. 17Receiving ....................................................................................................................................................... 17Changing Channels ........................................................................................................................................ 18Adjusting Transmitting Power ....................................................................................................................... 18SCAN Operating mode .................................................................................................................................. 18Normal Scan .......................................................................................................................... 18Priority Scan .......................................................................................................................... 19Transmitting .......................................................................................................................... 19Emergency Call ............................................................................................................................................. 19Monitor .......................................................................................................................................................... 19Subtone .......................................................................................................................................................... 20CTCSS tone frequency ......................................................................................................... 20DCS code ............................................................................................................................... 212 Tone Function ............................................................................................................................................. 22VOX .............................................................................................................................................................. 22Compander ..................................................................................................................................................... 22Scramble ........................................................................................................................................................ 22Stun / Revive Function .................................................................................................................................. 22BCL/BCLO .................................................................................................................................................... 23TOT ............................................................................................................................................................... 23Key Lock ....................................................................................................................................................... 23Battery Indication .......................................................................................................................................... 23PSC ................................................................................................................................................................ 23
Maintenance Manual 4 Squelch Level ................................................................................................................................................ 24Cloning .......................................................................................................................................................... 24Wire Cloning .......................................................................................................................... 24
Maintenance Manual 5 SPECIFICATIONS MODEL: PZ-S100 GENERAL Dimensions(Less Antenna) H x W x D Weight Radio (less battery) with battery (2600mAH) Programmable Channels Channel Spacing Power Source Current Drain (maximum) Receive Standby mode Receive Full Audio Transmit at 5 Watts 112.2 × 56mm × 31.9 mm 16 Channels 12.5 / 25 kHz 7.5V DC Rechargeable Li-ion 2600 mAH battery pack 69 mA 350 mA 1.6 A TRANSMITTER Frequency Range Frequency Stability RF Power Output Spurious and Harmonic FM Hum and Noise Audio Distortion Audio Frequency Response 136 ~ 174 MHz ±2.5 ppm (-30 to +60℃) 5 Watts / 2 Watts -65dB 40dB (12.5 kHz), 45dB (25 kHz) 5% maximum +1, -3dB from 6dB per octave pre-emphasis Characteristic from 300 ~ 3000Hz RECEIVER Frequency Range Sensitivity Squelch Sensitivity Selectivity Spurious and Harmonic Rejection Inter-modulation FM Hum and Noise Audio Output Power Audio Distortion Audio Response 136 ~ 174 MHz .282uV 12 dB SINAD .25uV 10dB SINAD 60dB (12.5KHz), 65dB(25KHz) 70dB 60dB 40dB 1 Watt across an 16-ohm load Less than 5% at rated output +1, -3 dB from 6dB per octave de-emphasis Characteristic from 300 ~ 3000Hz
Maintenance Manual 6 MODEL: PZ-S400 GENERAL Dimensions(Less Antenna) H x W x D Weight Radio (less battery) with battery (2600mAH) Programmable Channels Channel Spacing Power Source Current Drain (maximum) Receive Standby mode Receive Full Audio Transmit at 5 Watts 112.2 × 56mm × 31.9 mm 16 Channels 12.5 / 25 kHz 7.5V DC Rechargeable Li-ion 2600 mAH battery pack 69 mA 350 mA 1.6 A TRANSMITTER Frequency Range Frequency Stability RF Power Output Spurious and Harmonic FM Hum and Noise Audio Distortion Audio Frequency Response 400 ~ 470 MHz ±2.5 ppm (-30 to +60℃) 4 Watts / 2 Watts -65dB 40dB (12.5 kHz), 45dB (25 kHz) 5% maximum +1, -3dB from 6dB per octave pre-emphasis Characteristic from 300 ~ 3000Hz RECEIVER Frequency Range Sensitivity Squelch Sensitivity Selectivity Spurious and Harmonic Rejection Inter-modulation FM Hum and Noise Audio Output Power Audio Distortion Audio Response 400 ~ 470 MHz .282uV 12 dB SINAD .25uV 10dB SINAD 60dB (12.5KHz), 65dB(25KHz) 70dB 60dB 40dB 1 Watt across an 16-ohm load Less than 5% at rated output +1, -3 dB from 6dB per octave de-emphasis Characteristic from 300 ~ 3000Hz
Maintenance Manual 7 MODEL NUMBER To identify the model number of PZ-S series Radio is as followings P Z – S1 0 0 Model Number Description PZ – S100 Frequency band: 136 – 174 Mhz, PZ – S400 Frequency band: 400 – 470 Mhz, PZ-S SERIES RADIO PACKAGE NUMBERS Package Number Description PZS10XE PZS10WE PZS40XE PZS40WE 136 – 174Mhz PZ series radio 136 – 174Mhz PZ series radio (Waterproof model) 400 – 470Mhz PZ series radio 400 – 470Mhz PZ series radio (Waterproof model) FEATURES PZ-S series radio is designed for a rugged, lightweight and it can be provided for powerful sound and for better performance of conversation distance & sound quality. The new PZ-S series radio provides reliable service in the industrial fields and public places for the safety & convenience of users. The PZ-S series radio is offered with several packages available with respect to the options (Waterproof function). The radio is programmed using a Personal computer and program cable connected to the phone jack on the side of the radio.  16 channels are selectable.  Call Guard Squelch of standardized 53 CTCSS / 104 DCS Tones. Identification number of radio manufactured by UNIMO Frequency Band
Maintenance Manual 8  Scramble function of frequency Inverter Type  Compander function  Dual Tone Modulation Frequency (DTMF)  Selectable Channel Spacing (12.5kHz / 25KHz)  Normal Scanning and Priority Scanning  Time-Out Timer (TOT)  2-Tone Paging  BCL (Busy Channel Lock) / BCLO (Busy Channel Lock Out)  High/Low Power Switching  9 Step Squelch Control Using RSSI (0~9)  Remote Radio Stun/Revive (Use 5 Tone)  Monitor  VOX  Easy Cloning  USB PC Programming  PC Tuning
Maintenance Manual 9 CONTROLS & INDICATORS The following section provides a description of the controls and Indicators for the PZ-S series radio. Detailed operating instructions can be found the later chapter. Antenna Channel Select switch Emergency Button ON/OFF Volume switch Speaker-Microphone Jack Speaker Microphone PTT Button Monitor Button Status LED Emergency Button Antenna connector Status LED 16 Channel Select switch ON/OFF Volume switch Belt-clip
Maintenance Manual 10 Controls On/Off Volume Switch Turn the knob of Volume Switch clockwise to turn the Radio on and if turning the Switch to the opposite direction, the Radio is turned off. The audio volume level can be adjusted by turning the Volume Switch and when adjusting the volume, please refer to the index mark indicated nearby the Volume knob. The knob of volume doesn’t exist for the GPS model of PZ-S series radio. In this case, press and hold the “F4” button then the radio is turn ON. And during the operation press and hold “F4” button then the radio is turn OFF. Channel Select Switch Turn the knob of Channel Select Switch clockwise to increase the channel number and if turning the switch to the opposite direction then decrease the channel number. The channel numbers are pre-programmed using by PC program. PTT Button The radio is converted to transmission mode and transmitting the RF power by pressing and holding the PTT button on the side of the radio. The status indication LED lights in red color. And the radio is converted to receive standby mode by release the PTT button. It is recommended to talk about 5~7cm away from the microphone for using in better sound quality and for better voice communication. Monitor Button When this button is assigned to “Monitor” then this function is activated. The receiving status of the selected channel can be checked using by “Monitor” button. Normal Mode: During the press and holding the “Monitor” button for about 2 seconds, it is possible to check the receiving status of the channel. Continuous Mode: Press and holding the “Monitor” button for more than 2 seconds, a beep tone is heard along with a noise and the monitor function is continuously maintained. If pressing the Monitor button again, the monitor function will be released. Red Button This button can be pre-assigned for several kinds of function.
Maintenance Manual 11 When this button is assigned to “Emergency” then the red button is activated for emergency function. Press the “Emergency” button in an emergency situation, an emergency siren sound will be heard through the speaker in the Radio. And the Radio will transmit an emergency signal to the party through the emergency channel. Side Button (Scan Button) This button can be pre-assigned for several kinds of function. Speaker Microphone Jack The speaker microphone Jack on the side of the radio will be used for interface with external speaker microphone accessories and making PC programming/Cloning/Tuning, Indicators Status Indication LED The users can be recognized the current status of PZ-S series radio by the color of LED. The status indication will be as followings.  When the transmitting status is normal, the red LED will be ON.  When the receiving status is normal, the green LED will be ON.  When the CTCSS tone or DCS code is not being received due to mismatch, the green LED will be blinked.  When the low battery condition, the red LED will be blinked and an alert tone will be generated.  When the Cloning mode, the orange LED will be blinked.
Maintenance Manual 12 BATTERY PACKS The following battery pack is available for use with the PZ-S series radio.  PBX-2260LA: Rechargeable Battery Packs (2600mAH Li-ion).  PBX-2220LA: Rechargeable Battery Packs (2200mAH Li-ion). The PZ-S series Radio receives power from high-performance Li-ion battery. The battery is safe, of high-performance and highly reliable. Using the enclosed standard charger makes it possible to get sufficient efficiency and lifetime of the battery. ☞ CAUTION Battery Packs used with the PZ-S series radio must be supplied by UNIMO Technology Co., Ltd.
Maintenance Manual 13 Installing the Battery Pack  Ensure the ON/OFF volume switch is set to OFF position of the radio.  Hold the radio and battery pack with the back of them facing you. See Figure  Align the hook back of the radio with the hook front side of the battery pack  Press and slide the battery pack fully upper side of the radio until the battery release latch click into place.
Maintenance Manual 14 Removing the Battery Pack  Ensure the ON/OFF volume switch is set to OFF position of the radio.  Press down the release latch and slide the battery pack down side of the radio. See Figure
Maintenance Manual 15 Charging the Battery Pack New batteries or batteries that have been stored for a long time period should be fully charged before placing into service. Low battery voltage will shorten the talk range and will make the performance of radio worse. When the battery pack requires charging then the radio will sound a high pitch tone every second How to Charging  Plug the charger (CHZ-260FB) into the electricity power outlet for AC220V.  The charger (CHZ-260FB) has two slots.  When charging the radio with the battery installed, insert the radio into front slot of the charger after power off.
Maintenance Manual 16  When charging the battery only, insert battery into rear slot of the charger.  Although the green LED is on after full charge, please continue the charging for 30 more minutes for the complete full charge. During the charging After complete charging Error condition During maintaining charge red LED is turn ON green LED is turn ON red LED is blinks green LED is turn ON ☞ CAUTION Charger used with battery packs must be supplied by UNIMO Technology Co., Ltd. Charging the battery on the other manufacturer’s can cause unexpected damage of the battery and the radio CHARGER The CHZ-260FB is designed for charging the high capacity batteries (PBZ-2260LA) of PZ-S series radio. Input Voltage Battery Rapid Charging Time Operating Temperature Charging Current AC 85V ∼ 250V PBZ-2260LA, PBZ-2260LB In 3 and half hour 0 ~ 50℃ 900 mA (Fast Charging)
Maintenance Manual 17 RADIO OPERATIONS Installation and Removal of Antenna Put the antenna into the antenna connector of the radio and turn the antenna clockwise for installation of antenna and in order to remove the antenna from Radio, turn the antenna counterclockwise. ☞ CAUTION` When installation of the antenna, giving a strong pressure to the Radio or pulling the antenna from Radio with a strong power can make damage on the antenna connector, which may cause the Radio to have critical problem. Power On/Off Turn Power switch clockwise and as soon as power is supplied, a “beep” sound is heard and the model name of the radio is displayed and the Radio enters into the previous latest state. ☞ CAUTION` If turning power on by pressing a button on Radio, the Radio may enter into a special mode, in this case, the transmitting and receiving of radio may not be possible. Don’t use the Radio for the other purpose apart from the above. Transmission Press the PTT button on the left side of Radio for transmission. The DTMF or 5 Tone is transmitted according to the setting of the radio. During this time voice communication will not be made and after that the red LED is turned on and voice is transmitted. For voice communication in the best sound quality, it is recommended to talk 5~10cm away from the radio. ☞ CAUTION` If transmitting consecutively for more than a certain time when setting of BCLO function and TOT function, the transmission can be forcibly interrupted for other users. Receiving The radio operates as a receiving standby mode except for the transmitting period. User can adjust the volume by using the volume switch. The green LED is turn ON when the radio receives the RF signal and can heard the transmitting voice. According to the setting of transmitting radio, can be heard the DTMF
Maintenance Manual 18 tone or 5 Tone. If frequency is same as current channel but sub-tone is not same as current setting than the green LED blinks. In order to check if the current channel is in use, press the Monitor button (M) on the left side of Radio. If pressing the Monitor button (M) for about 2 seconds, the monitor function is activated with a “beep” sound. To release from the monitor function, press the monitor button shortly. Changing Channels Channel Switch is used for changing channels. Turn the Channel switch clockwise to increase the channel number with beep sound or channel number announced voice. And Turn the Channel switch counter-clockwise to decrease the channel number with beep sound or channel number announced voice. The channel frequencies include sub-tone information are pre-programmed by PC program. Adjusting Transmitting Power The transmitting power can be selected to High-Power mode or Low-Power mode. The user can change the transmitting power by pressing the button which is pre-assigned by PC program. By changing the power to Low-power mode under a good communication condition, the user can extend the battery life. SCAN Operating mode SCAN function is executed with a “beep” sound when pressing the button which is pre-assigned by PC program during the standby state. The radio will change the scan channel and check the RF signal at regular interval. Repress this button shortly then SCAN function can be deactivated. A scan channel list must be created before SCAN can be used. The radio will not go into SCAN mode where no scan channels are programmed. Normal Scan Once SCAN is activated, the radio will perform a normal scan mode. When the scan channel list is NS1, NS2 and NS3 on the normal scan mode, the radio proceeds to scan in the sequence of NS1, NS2, NS3, NS1, NS2, NS3.... During the receiving mode user can move to the next channel by pressing the red button. And delete current receiving channel temporarily from the scan channel list. If getting out of SCAN Mode or turning on power again, the list deleted temporarily is returned back to the original.
Maintenance Manual 19 Priority Scan As soon as priority scan channel is detected, the radio will change priority scan mode. When the scan channel list is NS1, NS2, NS3 and priority scan channel is PS, the radio proceeds to scan in the sequence of PS, NS1, PS, NS2, PS, NS3, PS, NS1.... During receiving signal through common channel, the radio scans the priority channel periodically. And if the radio detects the signal on the priority channel, it starts to receive the signal from the priority channel. During the receiving mode user can move to the next channel by pressing the red button. The user can delete current receiving channel temporarily from the scan list and at that time, user can move to the next channel. But the radio receives the signal from priority channel then it will not be deleted. Transmitting Pressing the PTT button cause the radio to transmit on selected channel frequency and to stop the SCAN mode. And the selected channel frequency can be established in PC programmer.  Home channel.  Last receiving channel  Current scan channel. Emergency Call If pressing the button which is pre-assigned by PC program, radio transmitting the emergency alert tone or 5-Tone message in Sell-call mode. Also user can hear the emergency alert tone. If the radio is set up in repeated mode, the radio is transmitting the emergency alert tone periodically. This function can be performed when SCAN is activated. Monitor In order to open the squelch compulsorily, press the button which is pre-assigned by PC program. If pressing the MON key for more than 2 seconds, the squelch is opened continuously with a “beep” sound. If you want to get out of this mode, press the MON key shortly once again, or turn off and on the power.
Maintenance Manual 20 Subtone The radio can be programmed for CTCSS encode/decode tone frequencies and DCS code. CTCSS tone frequency A list of standard tone frequencies for CTCSS tone are describing as shown below. No. Frequency No. Frequency No. Frequency No. Frequency 1 67.0 15 110.9 29 179.9 43 196.6 2 71.9 16 114.8 30 186.2 44 199.5 3 74.4 17 118.8 31 192.8 45 206.5 4 77.0 18 123.0 32 203.5 46 229.1 5 79.7 19 127.3 33 210.7 47 254.1 6 82.5 20 131.8 34 218.1 48 165.5 7 85.4 21 136.5 35 225.7 49 171.3 8 88.5 22 141.3 36 233.6 50 177.3 9 91.5 23 146.2 37 241.8 51 60.7 10 94.8 24 151.4 38 250.3 52 62.5 11 97.4 25 156.7 39 69.3 53 64.7 12 100.0 26 162.2 40 159.8 13 103.5 27 167.9 41 183.5 14 107.2 28 173.8 42 189.9
Maintenance Manual 21 DCS code A list of standard DCS tone codes are described as shown below. No. DCS Code No. DCS Code No. DCS Code No. DCS Code 1 023 27 165 53 413 79 731 2 025 28 172 54 423 80 732 3 026 29 174 55 431 81 734 4 031 30 205 56 432 82 743 5 032 31 223 57 445 83 754 6 043 32 226 58 464 84 036 7 047 33 243 59 465 85 053 8 051 34 244 60 466 86 122 9 054 35 245 61 503 87 122 10 065 36 251 62 506 88 212 11 071 37 261 63 516 89 225 12 072 38 263 64 532 90 246 13 073 39 265 65 546 91 252 14 074 40 271 66 565 92 255 15 114 41 306 67 606 93 266 16 115 42 311 68 612 94 274 17 116 43 315 69 624 95 325 18 125 44 331 70 627 96 332 19 131 45 343 71 631 97 356 20 132 46 346 72 632 98 446 21 134 47 351 73 654 99 452 22 143 48 364 74 662 100 454 23 152 49 365 75 664 101 455 24 155 50 371 76 703 102 462 25 156 51 411 77 712 103 523 26 162 52 412 78 723 104 526
Maintenance Manual 22 2 Tone Function The radio encodes the received 2 Tone before receiving the transmission voice when current channel is activated 2 Tone. If the 2 Tone corresponds with that of current channel then radio receives the corresponding 2 Tone normally. (In case of No Tone or the corresponding Sub-tone) VOX The VOX function is set up by Pc-Programmer and without pressing the PTT key, the voice signal is transmitted through microphone. Compander The compander function is used for improving the voice quality. When transmitting, it transmits compressed voice and when receiving, it expands the compressed voice, which is for improvement of communication quality. This function is activated by pressing the button which is pre-assigned by PC program. In case of compander function is activated, when turn ON the radio the green LED is turned ON. And after the “beep” sound the green LED is turn OFF. Scramble The scramble function is used to protect the radio from overhearing of the other radio that is used same frequency. The scramble can be activated by pressing the button which is pre-assigned by PC program. In case of scramble function is activated, when turn ON the radio the red LED is turned ON. And after the “BEEP” sound the red LED is turn OFF. Although the power is turned off and on, this function is maintained. Stun / Revive Function It is possible to stun and revive the radio with Stun ID from the control center. If the radio receives Stun ID then all of the key and buttons of the radio doesn’t perform. And the red and green LED is blinking periodically. In this state, pressing the PTT buttons then can be heard alert sound. And although the power is turned off and on, this state is maintained. If the radio receives Revive ID from the other radio, the Radio returns back to the original mode
Maintenance Manual 23 with ”beep” sound. BCL/BCLO BCL/BCLO function is used not to interrupt the other users who are using the same frequency. If BCL/BCLO is activated then transmitting is prohibited from the same channel that was used for others. In this case, alert sound is heard. BCL(Busy Channel Lock) : Prohibit transmission from the same frequency. BCLO(Busy Channel Lock Override) : Prohibit transmission in case of different sub-tone. TOT TOT function is used to prevent from using one channel continuously for a long time. If the radio transmits over the TOT time continuously, the transmitting is automatically stopped and an alert sound is generated. If a Penalty time is set up then the radio makes transmitting normally after the penalty time. The TOT and penalty time can be setup by PC programmer. Key Lock Press buttons over 2 seconds then Key Lock is activated when the radio is standby mode. The buttons doesn’t operate during this function is activated except PTT and this button. Key Lock function can be deactivated, pressing the pre-assigned button once more when the Key Lock is activated. Battery Indication Press the pre-assigned button when the radio is standby mode. The pre-assigned color of LED is turned ON for one second.  Green color : full charged  Yellow color : sufficient  Red color : Requires charging  Red color of LED is blinked : The radio is turned OFF PSC It can be increased the battery lifetime when the PSC function is activated. It can be changed on the PC programmer.
Maintenance Manual 24 Squelch Level The user can be set the 9 different squelch levels on the radio. It can be changed on the PC programmer or press the pre-assigned button. Cloning The personality data of radio such as frequency/Tone/Scan can be copied to other radio directly using by cloning function. The following section provides a description of 2 different kind of cloning function. Wire Cloning  Prepare the cloning cable (PECLONA) for PZ-S series radio.  The originated radio should be turned on with pressing the PTT button and the radio to be copied should be in the standby mode for receiving.  The yellow LED is turned ON of the originated Radio.  Ear/Microphone jack of originated radio connect to the target radio through cloning cable.  If pressing the pre-assigned button of the originated radio, the copy is executed. After completing the copy, the green LED is turned ON. In case of failed then the red LED is turned OFF.  Remove the cloning cable from these two radios.  Turn off radio and re-power of two Radios. Please use the radio after checking if the copy is succeeded without problem. ☞ CAUTION` If the Cloning is made into other maker’s Radio, a critical malfunction can happen.
Acknowledging Special Precautions and the FCC Notice Cautions. Modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. FCC compliance Information This device complies with part 15 of FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received. Including interference that may cause undesired operation. Information to User This equipment has been tested and found to comply with the limits for a Class B digital device, Pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio Frequency energy and, if not installed and used in accordance with th einstruction, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, whic h can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: > Reorient or relocate the receiving antenna. > Increase the separation between the equipment and receiver > Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help.
RADIO FREQUENCY ENERGY SAFETY INFORMATION This UNIMO transceiver has been tested and complies with the standards listed below, in regards to radio Frequency(RF) energy electromagnetic energy(EME) generated by the transceiver > FCC RF exposure limits for Occupational use only. RF exposure limits adopted by the FCC are generally based on recommendations from the national council on radiation protection and measurement, & the American National National Standards Institute. > FCC OET Bulletin 65 Edition 97-01 Supplement C > American National Standards Institute(C95.1-1992) > American National Standards Institute(C95.3-1992) WARNING This UNIMO transceiver generates RF EME while transmitting. RF EME(Radio Frequency Electric & Magnetic Energy)has the potential to cause slight thermal, or heating effects to any part of your body less than the recommended distance from this radio transmitter's antenna. RF energy exposure is determined primarily by the distance to and the power of the transmitting device. In general, RF exposure is minimized when the lowest possible power is used or transmission time is kept to the minimum required for consistent communications, and the greatest distance possible from the antenna to the body is maintain. The transceiver has been designed for and is classified for Occupational use only. Occupational/controlled exposure limits are applicable to situations in which persons are exposed to RF energy as a consequence of their employment, and such persons have been made aware of the potential for exposure and can exercise control over their exposure. This means you can use the transceiver only if you are aware of the hazards of operating a transceiver and are familiar in ways to minimize these hazards. This transceiver is not intended for use by the general public in uncontrolled environments. Uncontrolled environment exposure limits are applicable to situations in which the general public may be exposed to RF energy ,or in which the persons who are exposed as a consequence of their employment may not be fully aware of the potential for exposure or cannot exercise control over their exposure The following list provides you with the information required to ensure that you are aware of RF exposure and of how to operate this transceiver so that the FCC RF exposure limitations are not exceeded. > While transmitting(holding the PTT switch), always keep the antenna at least 2.5cm (1 inches) from your body or face ,as well as from any bystanders
> Do not transmit for more than 50% of the total transceiver use time; transmitting over 50% of the total use time may exceed the limits in accordance to the FCC RF exposure requirements. Nominal transceiver operation is 5% transmission time,5% reception time, and 90% stand-by time > Use only the specified antenna for this transceiver; this may be either the antenna provided with the transceiver or another antenna authorized by UNIMO. Use only UNIMO authorized accessories (antennas, battery packs, belt clips, Speaker/Mics or headsets etc.): When worn on the body, always place the radio in a UNIMO recommended clip or carrying case meant for this product. The use of other than recommended or approved body-worn accessories may result in RF exposure levels which exceed the FCC's occupational /controlled environment RF exposure limits. CAUTION To ensure that your exposure to RF EME is within the FCC limits for occupational use, you must observe and adhere to the above points. Electromagnetic Interference Compatibility Electronic devices are susceptible to electromagnetic interference(EMI)if they are not adequately shielded or designed for electromagnetic compatibility. Because this transceiver generates RF energy, it can cause interference to such equipment. >Turn OFF your transceiver where signs are posted to do so. Hospitals and health care facilities use equipment that is sensitive to electromagnetic radiation. > Turn OFF your transceiver while on board an aircraft when so instructed, Use of the transceiver must be in accordance with airline regulations and/or crew instructions.
IMPORTANT Safety Instruction: 1) Read these instructions. 2) Keep these instructions. 3) Heed all warnings. 4) Follow all instructions. 5) Do not use this equipment near water. 6) Do not using near any heat sources such as radiators, heat resisters, stove, or other equipment that produce heat.
European Union Regulatory Notice Compliance with these directives implies conformity to harmonized European standards (European Norms) that are listed in the EU Declaration of Conformity issued by HP for this product or product family. This compliance is indicated by the following conformity marking placed on the product.

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