Video and Audio Transmitter
Equipment rated specification ●Power range: ~AC380V±10；220V±20% ●Frequency: 50±2Hz； ●Designed ambient condition of equipment: Indoor use ●Above sea level height: up to 3500 m ●Atmospheric pressure: 86～106kPb ●Ambient temperature: 0°C to 45°C General Performance Working frequency: 470MHz —...
Equipment rated specification
●Power range: ~AC380V±10；220V±20%
●Designed ambient condition of equipment: Indoor use
●Above sea level height: up to 3500 m
●Atmospheric pressure: 86～106kPb
●Ambient temperature: 0°C to 45°C
Working frequency: 470MHz — 860MHz.
Nominal load resistor impedance 50 Ω coaxial, reflection loss ≥ 26 dB.
Rated output power ：5KW.
Overall Machine Technology Specification
Specification of vision part
Video input level:
1Vp-p ± 3dB positive
Sync level 0.3Vp-p
Peak white level 0.7Vp-p
Video input impedance: 75 Ω（Coaxial）
Reflection loss ≥ 30dB .
Frequency 0MHz ～ 6MHz
Periodic clutter signal to noise ratio: 50dB（peak to peak）
Continuous random clutter signal to noise ratio:
average root value（no weighted）≥ 50dB
average root value（weighted）≥ 56dB
Useless transmission power of nearby outside channel is lower than carrier 60dB
Useless transmission power of nearby inside channel is lower than carrier 40dB
2T sine square wave distortion Kp ≤ 2 %
2T sine square wave distortion to bar pulse amplitude ratio Kpb ≤ 2 %
Line frequency tilt Kb ≤ 2 %
Field frequency tilt K50 ≤ 2 %
Brightness nonlinear distortion ≤ 10 %
Differential gain distortion DG ≤ 5 %
Differential phase distortion DP ≤ 5 °
Chroma and brightness gain difference ≤ 10 %
Chroma and brightness delay difference ≤ 30ns
Variation of vision output power ≤± 0.25dB
Carrier stability in three months ≤ ± 50 0Hz/ three months
Blanking level stability ≤ 2.5%
Carrier audacious phase modulation: ± 5 °
Mode of modulation: amplitude modulation , negative pole
Amplitude degree ≤ 87.5 %
Difference of sound carrier and vision carrier: 6.5MHz ± 0.001MHz
Radio frequency sync level: 100%
RF blanking level: 75% ± 2.5%
RF white level: 12.5% ～ 15%
Our company is a high-tech manufacturer which integrates R&D, production, marketing, installation and service. At present, our company owns a full set of imported testing instruments, including Spectrum Analyzer, Vector Network Analyzer and Power Meter. In order to highlight the technical advantage of our products, we rely on the technologies of domestic scientific research institutes and University of Electronic Science and Technology of China. With our technial advantages, we have developed customized products that can meet the demands of customers, with quality improving perfectly.
Our main products include DVB-T transmitter, UHF/VHF transmitter, FM broadcast transmitter, MMDS/MUDS tranasmitter, and DVB head-end equipments. All equipment we produced have been widely used in the fields of radio and TV signal coverage and transmission. Due to our superior quality, good service and reasonable price, our products have won praises from many customers at home and abroad.
By now, our company has exported our products to Taiwan area, Laos, Indonesia, the Philippines, Somalia, Brazil, Russia and other regions and countries, and formed long-term business relationships with overseas customers.
We sincerely and warmly welcome your inquiry and purchase, and we will try our best to freely provide the best system design and engineering consultation for you. Give us a chance, and we will cherish every business opportunity to show our qualification.
It is according to the customer’s quantity requirement. For example, 1kw, it will take about 7 working days after the contract effective.
For 3-5kw, it will take about 15 days.
2.The products we can produce
FM 30w, 100w, 300w, 500w, 1kw, 3kw, 5kw, 10kw, 15kw
TV 100w, 300w, 500w, 1kw, 3kw, 5kw, 10kw
Digital TV 100w, 300w, 500w, 1kw
We also produce the rare power according to customer’s requirement, such as, 2kw, 4kw, 7kw
The minimum power we can produce is 15w and maximum power we can produce is 20kw.
3.Package and transportation
We adopt international standard fumigation wooden case. It is also according to customer’s requirement.
As to the transportation, our products can be transported by sea, by air or by train.
4.Warranty and after-sales service
It is one year after delivery. For the non-personal fault, we offer free maintenance and spare parts. After the warranty, we only charge the cost.
5.Installation and debugging
We can offer the service of installation and debugging. The buyer should provide the salary, room and board of our staff, as well as arranging the translator. Our staff only takes in charge the installation on the ground. We don’t take the aerial work and heavy manual work. The infrastructure construction and signal source should be offered by the buyer and settled before our staffs arrive at the site.