Price(USD)	Qty(PCS)	Shipping(USD)	Total(USD)	Shipping Method	Payment
1000-10000	1	0	0	DHL
				DHL

 

FMUSER 25KW AM Broadcast Transmitter

 

1. Overview:

FMUSER is a system integration company specializing in RF wireless transmission/ studio video and audio equipment/ streaming and data processing. We provide everything from advice and consultation to rack integration to installation, commissioning and training.

We offer FM/ AM Transmitters, Analog TV Transmitters, Digital TV Transmitters, VHF UHF Transmitters, Antennas, Coax Connectors, STL, Live Processing, Studio Broadcast Products, RF Signal Monitoring, RDS Encoders, Audio Processors and remote site control units, IPTV products, video/audio encoders/decoders, designed to meet the needs of large international broadcast networks and small private stations.

We use advanced technology products for all systems because we know that high reliability and high performance are very important for systems and solutions. At the same time we also want to ensure that our product system is reasonably priced. We have clients for public and commercial broadcasters, telecom operators and regulators, and we also provide solutions and products for hundreds of smaller local and community broadcasters.

FMUSER.ORG has been exporting for over 13 years, with customers all over the world. With 13 years of experience in this field, we have a professional team to solve various problems of customers. We are committed to providing professional products and services at extremely reasonable prices.

2. Features:

2.1 Modern, High Efficiency, Digital High Power FMUSER AM Transmitter

• Adopt digital modulation method
• Over 82% overall efficiency, significantly reducing electricity costs
• Has a powerful network remote control system and automatic broadcast function
• 15-inch intuitive touch screen interface, which can realize all function control, simple and convenient operation
• Each FMUSER AM transmitter includes an output matching network that allows the transmitter to be tuned to maximize efficiency to accommodate changes
• Equipped with accurate RF and audio spectrum analyzers, real-time monitoring of operating index
• New standard in compact AM design, more efficient use of space

2.2 High-efficiency power supply to save energy and protect the environment

Superior efficiency design and low maintenance make this FMUSER AM transmitter extremely cost-effective to own and operate, with an overall efficiency of 82% or better. High efficiency means less energy is wasted as heat, and an air-cooled system using a fan also reduces power relative to the power consumption of the transmitter, reducing cooling and ventilation costs. Depending on its transmitter size and your local electricity bill, the resulting electricity savings can run into the tens or even hundreds of thousands of dollars over the lifetime of your transmitter. High efficiency also reduces thousands of metric tons of greenhouse gas emissions over the entire life cycle of the FMUSER AM transmitter while protecting the environment. The main power supply adopts thyristor full-wave rectification, and the main power supply adopts thyristor full-wave rectification, with phase loss protection function, phase sequence monitoring protection function, standing wave protection, overcurrent protection, wind protection, and high temperature protection. , Arc monitoring function. At the same time, three power levels of transmitter high power, medium power and low power can be adjusted.

2.3 First-class space utilization

FMUSER AM series transmitters are typically one-half to one-quarter the size of comparable high-power medium-wave transmitters. This makes planning your FMUSER AM transmitter deployment easier and gives you flexibility. While FMUSER AM series transmitters may be compact inside, they still offer easy and spacious access to all major serviceable components and modules, ensuring easy maintenance.

2.4 Advanced and easy-to-control touch screen and remote access control system

Each FMUSER AM transmitter includes remote control software (AUI) with network access and each FMUSER AM transmitter features a 15" touch screen display. Whether you are at the transmitter site or surfing the Internet at home, the 100% remote AUI helps you manage your transmitter, with hundreds of parameters available in real-time and at your fingertips. Imagine knowing in advance what parts and tools you will need in the transmitter field. Remote control can help you avoid travel, saving time and money. Its network communication interface and serial communication interface are (RS232 or RS485/RS422), in addition to remote operation, data acquisition can also be performed.

2.5 Real-time built-in meters
FMUSER AM series transmitters come with complete built-in meters and can cost tens of thousands of dollars if purchased separately.

These include real-time impedance measurement, voltage, current, power technology, which allows optimization and monitoring of antenna system load impedance while the transmitter is operating normally. Compare the transmitted voltage and current waveforms to measure the load impedance over the operating frequency range.

Because the system can measure impedance without the need for manual frequency sweeps, the antenna system impedance trace can be measured without turning off the radio. Impedance is measured at the combiner, so no correction for harmonic filter phase is required.

The FMUSER AM transmitter also includes a built-in directional coupler for spectrum measurements. Traditionally, transmitters have used voltage or current sensors. Directional couplers increase the accuracy of spectral measurements into the actual antenna loading, which is important when measuring adjacent channel emissions.

2.6 Easy to operate, reliable and easy to use

As with all FMUSER FM transmitters ever manufactured, the FMUSER series integrates solid state components in a rugged, highly redundant, hot-swappable architecture. The compact footprint, published parts list and screwdriver replaceable power keep your FMUSER AM transmitter running for years to come. A unique feature of the FMUSER AM transmitter is a complete replica of the exciter section that provides the RF carrier and modulation control signals to the power module. In the event of a failure, the transmitter automatically switches to a built-in backup exciter, significantly improving the high operational reliability inherent in the modular solid-state design. It can maintain live broadcast without manual supervision, adopts a unique circuit, which can dynamically stabilize the power supply, prevent the AC line voltage from changing, and automatically restore the previous operating state after AC power failure, overvoltage or RF overload, without special tools or Quick and easy frequency change capability is available with external test equipment.

2.7 Highly intelligent security mechanism system

The security device consists of a mechanical key-controlled access system that ensures power is removed from the transmitter cabinet and the antenna is grounded before access is allowed. A fail-safe emergency shutdown system is included, allowing the addition of an unlimited number of series-connected safety shut-off switches. Any loss of electrical continuity in this loop will automatically cause the main AC circuit breaker to open, removing all power to the transmitter cabinet.

2.8 Rock-solid reliability design

The welding and connection part of the power amplifier board adopts the whole board gold plating process, which ensures good electrical performance and anti-oxidation and corrosion resistance. The body of the transmitter adopts an anti-radiation case and a shielding structure. Except for the skeleton, it is an all-aluminum case, which meets the requirements of electromagnetic radiation. Fan airflow is unaffected by changes in AC power, further ensuring low temperature operation and long-term reliability. With master-standby switchover, it automatically switches to the standby machine when the host fails.

3. Parameters:

Modulation method: PDM
Power output range: 0-110% of rated power
Machine efficiency: better than 82%
Frequency tolerance: ≤1Hz
Audio input impedance: 600Ω balanced
Audio input level: -10 ~ +10db (nominal +6db)
RF output impedance: 50Ω
Positive peak modulation capability: not less than 140%
Continuous modulation capability: 100% continuous modulation of sine wave
Frequency response: ±0.5db (50Hz～8kHz, m=90%)
Total harmonic distortion: ≤1.0% (50Hz～8kHz, m=90%)
Signal-to-noise ratio: ≥63db
Carrier drop: ≤2%
Spurious emission: ≤-60dB
AC power supply: 3-phase 4-wire system, 380V±10%, frequency: 50±2Hz
Temperature: -10～+45℃

Cooling system: forced air cooling inside the machine

4. Other products:

4.1 AM in-phase horizontal antenna

4.2 MW dummy load

4.3 AM Debug Power Amplifier Tester

4.4 AM Antenna Impedance Automatic Matching System

5.Application 

 

 

Price(USD)	Qty(PCS)	Shipping(USD)	Total(USD)	Shipping Method	Payment
1000-10000	1	0	0	DHL
				DHL