CZH-10A USER MANUAL V1.0
Contents
1. Try using the shortest cable you can but never prefer shorter cable than higher antenna The mention is putting the transmitter as close as possible to the antenna and never rolls spare cable instead of cutting the spares2. CZH 10A USER MANUAL wo CAUTION 1 Opening the CZH 10A will AVOID the warranty 2 Do not operate without antenna 3 Warranty does not include the RF power transistor 4 Before operating Radio equipment please check for local rules about radio transmission Some countries require radio transmission license and operating without license is a law violation SPECIFICATION Frequency Range 87M Hz 108M Hz PLL Steps 100 KHz Frequency stability 250Hz RF Output Power Adjustable 0 10 Watt 15 RF out connector N type connector Impedance 50 Ohms Low Pass Filter on board for clean spectrum Panel Control 2X24 LCD 3 buttons Operation Voltage DC12V 4A Audio input RCA impedance 10kohm Audio Inputs Standard Line IN Level internal adjustable Audio Response 150Hz to 15 KHz 0 6dB Over 40dB separation Typical 45dB Low Audio Distortion less than 0 5 Pilot Tone 19 KHz 3Hz Package Contents 1x CZH 10A Unit Setup and operation steps Insert 12V4A power and look at the LCD screen Transmitter into standby you should see this message Now push The M buttons Turn on the transmitter again push The M buttons return to standby mode you should see this message Now push The M buttons 3 seconds into menu Note If the current backlight off will turn on the backlight Rather than into the menu Used UP A DOWN Y buttons select menu you should see this message Now push T
3. he M buttons into setting mode Used UP A DOWN Y buttons setting Options again push The M buttons return to menu you should see this message If no action within 10 seconds will return to the main display and automatically turn off the backlight Theory of operation Antenna The antenna is one of the major elements which eect on the range of your broadcast You will need to pay attention to the coaxial cable which will be described later The Best position for a FM broadcast antenna is the highest place which from him you have line sight as far as possible without any interference from Other buildings mountains and other high object which may interfere your broadcast signal Always remember that the critical parameter is not whether you broadcast 1W or 10W but whether you are 10 or 15 meters above ground The best antenna for this transmitter will be a 50 ohm antenna which was matched exactly to the frequency you will need to use but the price of those antennas may be high For a low cost antenna we recommend standard dipole FM antenna from any radio equipment which looks like 2 radiators in calculate length 75 freq M Hz Example At frequency of 100M Hz the length of each radiator will be 0 75m Coaxial cable We recommend using RG 58 which will t to the transmitter N type power out connector If you cannot nd it use RG 213 but always try to nd a good quality cable double shielded will be preferred
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