The leading products of ZHC include: FM Radio Transmitter; TV Transmitter.
ZHC is engaged in R & D; production; marketing; engineering installation and after-sales service of FM Radio & TV Wireless Broadcasting Equipment in professional.
ZHC 1KW FM Transmitter is High Quality FM Transmitter which can work for more than 5 years without any problem, In Stock in Philippines and Cash on pick up supported, Please PM for details if you have any problem, You can also contact Paul Xue in facebook: https://www.facebook.com/paul.xue.3152
ZHC Digital & Analog TV transmitters are available for sale, Digital transmitter support ISDB standard which is ok in Philippines, Please pm for details!
New powerful and cost effective 10KW Modular FM Stereo Transmitter. Welcome to place your order from ZHC!
🔘ZHC 5KW Hot-plugin FM Stereo Transmitter🔘
Model：ZHC618F-5000W
Specifications：5KW FM Stereo Transmitter (Hot-plugin)
Product introduction：The 5KW FM Stereo Transmitter (Hot-plugin) is a high-performance broadcast-grade stereo FM broadcast transmitter for wireless coverage of professional broadcast stations.
5KW FM Stereo Transmitter
The 5KW FM Stereo Transmitter (Hot-plugin) is a high-performance broadcast-grade stereo FM broadcast transmitter for wireless coverage of professional broadcast stations. Considering the high reliability of the transmitter, in the design concept, the transmitter adopts redundant design in key parts in order to achieve long-term stable operation of the transmitter. Because of the hot-plugin structure, the transmitter's components can be repaired and restored without stop working.
Features:
1. Redundant of output RF power: It is efficiently synthesized by four 1.5KW hot-plugin modules, and four 2500VA hot-plugin switching power supplies.
2. Stable output power: The intelligent automatic power control technology (AGC) is adopted to ensure that the output power does not change with the startup time and the ambient temperature. The power stability is controlled within 10W.
3. Dual-exciter configuration: adopting dual-exciter intelligent automatic switching (spare exciter and switcher are optional), which can further improve the reliability of the whole machine.
4. Digital FM Exciter: It adopts a fully digital CD-level FM exciter, which can directly receive digital audio signals (AES / EBU), and the listening effect is close to the CD level.
5. Friendly man-machine interface: 8-inch true-color touch LCD display, real-time display of various parameters in the machine, without any training, you can operate under the screen prompts.
6. Complete protection functions: with over-power protection, over-reflection power protection, over-temperature protection, over-voltage protection and over-current protection; and can intelligently adjust the output power when some power amplifier modules fail, while maintaining the maximum safe power broadcast, It can also guarantee that the fault will not be enlarged.
7. True hot-plugin function: under any circumstances, the power amplifier module and power module can be plugged in without stopping, and the transmitter can be repaired and restored without stopping.
8. Timing automatic adjustment of output power: Through on-site settings, the transmitter can automatically adjust the output power at different times of the day, bringing convenience to the economic operation of the radio.
9. Advanced remote-control telemetry interface: you can access any parameters inside the transmitter through RS232 / RS485 or interface TCP / IP network interface.
Technical Specifications:
1. RF frequency range 87MHz～108MHz
(other frequencies can be customized), stepping 10kHz
2. Output power 0~5000W continuously adjustable
3. Allowable deviation of output power ＜ ± 10%
4. Output power stability ＜ ± 3%
5. Output impedance 50Ω
6. RF Output Interface: 1-5/8' Fl**ge
7. Residual wave radiation ＜ -75dB
8. Parasitic amplitude modulation ＜ -50dB
9. Carrier Frequency precision: ±200Hz
10. Analog audio input -12dBm ~ +8dBm
11. Input audio Level Gain -15dB~+15dB Step 0.1dB
12. Analog audio input impedance 600Ω balance
13. AES input impedance 110Ω balance
14. AES input level 0.2~10Vpp
15. AES sampling rate 30kHz ~ 96kHz
16. RDS input Unbalanced (optional) BNC type connector
17. Pre-emphasis: 0μS，50μS，75μS
18. Audio response ±0.01dB (30Hz～15000Hz)
19. Left and right channel level difference
Testing ZHC 1KW FM Transmitters before shipping!
Welcome pm for order details!
ZHC618F-1000W 5G PROFESSIONAL FM STEREO TRANSMITTER
Technical characteristics
Product 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):
◆ AES/EBU digital audio signal input (highest priority)
◆ Analog stereo analog audio signal input (2nd priority)
◆ MPX stereo composite signal input (3rd priority)
• Supports one RDS or SCA subcarrier input
• 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 communication interface
• 19-inch standard chassis, height 2U
ZHC Large power fm transmitters are perfect for Commercial FM Radio station, Stable and reliable! Please communicate with us here if you have any questions!
500W Digital TV Transmitter
Model：ZHC518D-500W
Specifications：Professional for TV Station
Product introduction：This product can be equipped with various standard exciters such as terrestrial digital television national standard (DTMB), ISDB-TB, ATSC andDVB-T2 to form various standard digital television transmitters.
Features:
●All solid-state digital TV transmitter, bandwidth is 6-8MHZ.
●Pre-distortion correction, dual-exciters switch automatically.
●High Linearity LDMOS Power Amplifier, high-gain power amplifier module, parallel switching power supply, it is a high-efficiency transmitter.
●Telemetry and remote control by computer, web-based interface and software.
●Good man-machine interface, full automatic switch the machine with one key.
●Multi protection (over voltage, over current, overheating, large standing-wave ratio ...)high reliability, 24 hours continuous works.
Technical Specifications:
1. Working frequency： VHF/UHF
2. Channel bandwidth： 8MHz
3. Output power： 500W
4. Output impedance： 50Ω
5. Output interface： 7/16”or 7/8”Fl**ge
6. Output load return loss:
Normal operation: -32dB
Allowed operation: -20dB
7. Power input level： 0dBm
8. Amplifier input impedance： 50Ω
9. Amplifier input interface： N”
10.Useless transmission: ≤-60dB
11.Band fluctuations: ±0.5dB
12.Band shoulder: better than 36dB
13.MER： better than 30dB
14.Size： 820mm×570mm×390mm
15.Weight： 45KG
ZHC HAS DEVELOPED THE COMPACT STRUCTURE OF 1KW DIGITAL TV TRANSMITTER.
Model: ZHC518D-1000W/C3
High reliability, smaller size, smaller weight, easy to transport and cost effective.
Features:
● Adopt the built-in brand-new FPGA+DDS technology structure digital TV
excitation board, which has superior performance, high reliability and good
consistency. It fully supports all working modes covered by various standards of
digital TV, supports single/multi-frequency network mode and supports
multi-carrier and single-carrier at the same time.
● Support linear nonlinear self-adaptive correction pre-distortion function,
advanced self-adaptive algorithm, call corresponding correction curve according to
communication interface command, specially optimized for multi-integrated
high-efficiency power amplifier, the correction effect is excellent.
●The optional digital TV excitation board supports built-in GPS module, 2-way IP
input, supports full-duplex, simultaneous bi-directional transmission of a single
network port, supports automatic switching of four-way input signals, mutual
backup, and supports effective simultaneous access to all input streams The ability
to detect the code rate. When the effective bit rate of the main channel is lower than
the threshold, it will automatically switch to the next channel with an effective bit
rate higher than the threshold for broadcasting, and an alarm will be issued. The
switching time is less than 1 second; If the effective bit rate of the channel does not
reach the threshold value, keep the original main channel broadcast without
switching, and issue an alarm; when the bit rate of a channel is lower than the
threshold value (can be set), an alarm message is issued; no stream input , the RF
power output of the excitation board is normal.
●Support transmitter output signal monitoring, the RF index MER monitoring
accuracy output by the transmitter is not less than 40db, the shoulder monitoring
accuracy is not less than 50db, and the error is not more than 2db.
●Adopting the modular design concept, it is convenient for long-term maintenance
and upgrading, and improves reliability
●Perfect protection measures to reduce equipment damage. With no code flow,
excessive standing wave ratio, over power, over voltage, over current, over
temperature protection functions and lightning protection measures at the whole
machine and component level.
●With MLC and ALC control functions, power control adopts closed-loop automatic
gain control to ensure stable output power without drift. The switch machine has no
impact pulse and power output ramp-up function, which better protects the
transmitter.
●The power amplifier unit consists of a 1000W power amplifier that can work
independently, installed in a 4U high 19-inch standard chassis, and is composed of
eight identical 180W multi-integrated power amplifier modules for low-loss and
high-isolation in-phase synthesis with a maximum output of 1200W power. Large
redundancy and high reliability.
●The power amplifier module uses the latest high-gain anti-high standing wave
ratio LDMOS tube, the single-tube multi-combination efficiency is up to 50%, and
the output matching adopts the micro-band impedance transformation technology,
which is simple, efficient, and consistent, and is convenient for maintenance and
replacement.
●The power amplifier radiator adopts the patented thermal simulation design tooth
shape, which has small wind resistance and large heat dissipation area. With the
large-area copper substrate of the power amplifier module, the heat conduction
efficiency is high, reducing the temperature of the die and greatly improving the
reliability of the long-term operation of the power amplifier tube.
●The whole machine is equipped with RS232/RS485, IP and other communication
interfaces, supports Web network management, and has intelligent network
management and monitoring. The working parameters of the whole machine are
detected in real time. The perfect computer control software has self-diagnosis
function and various monitoring and alarm functions. Various technical parameters
can be read and set through the liquid crystal display on the front panel.
● Adopt 96% high-efficiency modular hot-swap switching power supply, with
over-voltage, over-current, under-voltage, over-temperature, short circuit,
lightning protection and other protection measures, wide range of AC input voltage,
strong ability to adapt to external power changes.
●Using six imported high-quality, long-life, high-volume axial flow fans, with large
air volume redundancy, compact transmitter structure and beautiful appearance,
ensuring the normal operation of the whole machine.
Technical Specifications：
The technical specifications meets the requirements of GB/T 28435-2012
Technical Requirements and Measurement Methods for Terrestrial Digital
TV Broadcasting Transmitters, SJ/T 11574-2016 General Specifications
for Digital TV Terrestrial Broadcasting Transmitters and GY/T 229.4-2008
Terrestrial Digital TV Technical Requirements and Measurement Methods
for Broadcasting Transmitters.
1. Working frequency band: 470~700MHz (frequency can be set arbitrarily)
2. Output power: 1000W (maximum 1200W)
3. Machine efficiency: ≥35% (1200W≥40%)
4. Output impedance: 50Ω
5. Allowable reflection loss of working load: ≥20dB
6. Useless emission: Inside the adjacent channel ≤-50dB
Outside the adjacent channel ≤-60dB
7. In-band unevenness:
ZHC618F-2000W Compact FM Stereo Transmitter
ZHC618F-2000C is a compact FM stereo broadcasting transmitters. The advanced digital technologies, Digital Signal Processor (DSP) and Digital Direct Synthesizer (DDS), are used in the transmitters to get little size, high performance and high reliability. They are widely used for professional radio stations to transmit high quality FM radio programs.
FEATURES:
1. The simple design of 2KW FM stereo transmitter, exciter, power amplifier, output filter, switching power supply, etc. are installed in a 4U high 19-inch standard chassis, reducing the connection cables between ordinary transmitter components, and more reliable High, easier operation.
2. The whole process of digital processing (DSP + DDS), to achieve the perfect hearing effect close to CD sound quality.
3. Analog audio and digital audio (AES / EBU) can be input at the same time, digital audio has priority.
4. With TCP / IP, CAN and RS232 communication interfaces and SMS cat interface.
5. Perfect alarm and protection functions for over current, over voltage, over temperature, over power, and excessive standing wave ratio.
6. Large screen LCD displays working parameters in real time.
7. Large radiator and two high-speed, long-life fans are used to ensure that the transmitter works at a reliable low temperature.
8. Use high quality, high reliability, wide range switching power supply.
9. High-quality stainless steel, 4U, 19-inch standard chassis.
10. The machine has high reliability, high performance, easy operation and low price.
ZHC 1KW FM Transmitter is High end FM Transmitter from China, it has more than 7 Years trouble Free working life, For more informations, Please contact us for details!
ZHC 1KW FM Transmitter in stock and ready for Your orders, COP supported for Philippines customers
If need FM&TV Transmitter and Antenna system, please feel welcome to place your order from ZHC
If need FM & TV Transmitters recently, welcome to place your order from ZHC !
ZHC Professional FM Transmitters are Professional FM transmitters from China, Recommend ZHC 10KW and 5KW FM transmitters for commercial Stations! Please contact us for more details!
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