30W FM Transmitter

ZHC618F-30W/5G FM Transmitter (Exciter)1. OverviewZHC5G series FM stereo broadcast transmitter (exciter) is an outstanding software radio product; it is designed with high reliability concept and has unparalleled performance indicators.This transmitter uses a new large-scale field-programmable gate array (FPGA) and direct digital frequency synthesis (DDS) technology up to 5G, which has achieved the highest technical specifications in the industry so far, it's providing listeners with CD-like sound quality.The transmitter consists of audio interface unit, digital processing and FM modulation unit, radio frequency power amplifier unit, human-machine interface unit, communication interface unit, clock synchronization unit and power supply unit. The transmitter is installed in one 19-inch 2U standard case, and all input and output signals are led out from the rear panel.2. Technical characteristics and principle block diagramProduct technology has the following technical features:• Full process digital processing to achieve a perfect auditory effect of CD-like sound quality• Full-scale digital processing with large-scale field-programmable gate array (FPGA) technology• Direct digital frequency synthesis (DDS) technology at speeds up to 5G to peak transmitter specifications• High reliability microprocessor (ARM) technology as the primary controller• Support for multiple audio source inputs (transmitters can be automatically selected by priority): Two AES/EBU digital audio signal inputs (highest and second priority)One analog stereo analog audio signal input (3rd priority)One MPX stereo composite signal input (4th priority)One I2S digital audio signal input (lowest priority)• Supports one RDS or SCA subcarrier input• Support stereo pilot signal and stereo composite signal 19KHz/MPX output• Upgradeable to FM Synchronous broadcast transmitter• Electronically controlled AGC controls output power zero drift• Perfect over-current, over-voltage, over-temperature, over-power, standing wave ratio alarm and protection• One-touch shuttle quick keyboard input• Real-time display of operating parameters using OLED• With TCP/IP, RS232, RS485, CAN communication interface and SMS modem interface• 19-inch standard chassis, height 2UThe Transmitter Block Diagram: 3. Technical specifications1. Nominal emission frequency            87MHz~108MHz (other frequencies can be customized), stepping 10kHz2. Carrier frequency tolerance             ±200Hz3. Output power                              0~30W4. Output power stability