FM transmitter CZH-05A User Manual
Contents
1. Please visit our website http www 108MHz com for more products FM Transmitter CZH 05A User manual 2 3 Leo UP DOWN Button EHN Connect antenna first then connect the power supply 120V 1 LOA z ON OFF 0 0 Audio OE Power Input LINE IN Power ON OFF Antenna Interface How to set up 1 2 3 4 5 6 7 8 ma Connect the rubber antenna to the ANT interface Connect your audio source to the Audio interface via audio cables Connect the power supply to the Power interface Attention please note recommended operating voltage is 12V the polarity of the tip is inner positive and outer negative Turn on the transmitter by pressing down power button to prepare broadcasting Select an unused FM station in your area The station can be totally static or with some bleed over on it The Stereo FM Transmitter should have no problem walking over a radio station s bleed over Set the Stereo FM Transmitter to that unused FM station you can use the control panel button A or W to adjust frequency the step frequency is 1OOKHZ Set the frequency of your FM Radio to the same frequency which the transmitter is broadcasting on Listen and Enjoy it s so easy How to connect 2 separate inputs to this transmitter 1 The transmitter has two audio input interfaces one on the left marked as Audio and the other2. on the right marked as MIC Generally speaking the left is connected with audio input such as CD player Line in of the computer sound card Revised by BG7CR on Nov 1 2012 Any question please send email to littleshirely gmail com Please visit our website http www 108MHz com for more products FM Transmitter CZH 05A User manual 2 Certainly you can connect to two audio equipments such as the left is connected to the output of the sound card and the right is connected to MIC therefore you can hear two inputs on the receiver 3 However if you have a Mixer mix them first then connect to Audio interface is recommended 4 In addition note that MIC port only support electret condenser microphone but not moving coil microphone 3 How to transmit farther 1 As the transmission range depends on many factors the true distance is based on not only the transmitter power and its performances but also on the sensitivity of the receiver antenna of the receiver buildings and other obstructions which between the transmitter and the receiver 2 The distance will much farther in barrier free environment such as open countryside Therefore it is not scientific simple to say how far it transmits The transmission range may differ greatly with the same transmitter in different surroundings 3 If you want to get a farther range what you focus onis to buy a high quality antenna and try to set it higher Te
3. FM Transmitter CZH 05A User manual Important CO Oy UT ee S Maintenance can only be operated by authorized professionals Get lightening protection measures ready in thunderstorm weather Do not touch the antenna when the transmitter is powered on Do not power on the transmitter if the antenna is not well connected Do not use the transmitter under the explosive environment such as gas refueling station etc Do not use the transmitter in the extreme dusty damp or high temperature environment Be sure to comply with the rules released by the local radio administrations Inner circuit board version may vary or slightly modifications with different batches of products Introduction 1 5 CZH 05A is the low power FM transmitter which is generally used in home factories or school cars or anywhere you want Its crust is made of high quality aluminum alloy with blue backlit LCD to display frequency The motherboard is applied with chip BH1415F which is the new integrated NC FM stereo radio chip by ROHM built in PLL frequency audio pre emphasis limiter and low pass filter circuit Make sound more sweet The control board is designed with high performance MCU STC series its performance is better than AT89C2051 Good shielding compact structure small size generous appearance Operation Instructions 1 Control panel Revised by BG7CR on Nov 1 2012 Any question please send email to littleshirely gmail com
4. FM Transmitter is designed to operate non stop 24 7 The higher you place the antenna the farther you will transmit If you can match a good antenna to the FM transmitter the effect will be better If you have any other questions or concerns that the manual does not include please feel free to let us know and we are always here to assist Hope the little product could bring you some fun and you can enjoy your own music The end Revised by BG7CR on Nov 1 2012 Any question please send email to littleshirely gmail com Please visit our website http www 108MHz com for more products
5. chnical Specification Power supply voltage DC 9 14V 12V recommended Operating current lt 0 5A Frequency range 87 108Mhz Frequency step 100kHz Frequency stabilization method PLL Frequency stability 10ppm 10 C to 60 C Frequency Deviation Less than 75 kHz 100 Working method continuous Clutter and Harmonic Less than 60dB SNR More than 60dB Stereo Channels Crosstalk 50dB Audio frequency response 20 to 15000Hz Audio distortion Less than 2 Modulation 15 Input Level 15dBV RF output impedance 50 Ohm RF output power 0 5 W Reference range 100m 1Km A barrier free environment Dimensions 100mm L 80mm W 30mm H Revised by BG7CR on Nov 1 2012 Any question please send email to littleshirely gmail com Please visit our website http www 108MHz com for more products FM Transmitter CZH 05A User manual Facts amp Tips The FM Transmitter will not drift between stations because of our advanced stereo PLL Digital Tuner Technology The FM Transmitter use the control panel buttons to control the frequency that it broadcasts on so if the power is lost and then restored it will begin broadcasting back on that exact same frequency This avoids any need to reset the FM Transmitter back to the frequency you originally wanted We use a switch to turn the transmitter on and off This allows the transmitter to automatically turn back if power were to be lost and then restored The
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