Wide-band frequency Transmission Network Technology is an innovative technology using one wide-band frequency digital TV transmitter to achieve multi-channel transmitting, solving the existing problems of single-channel system in one fell swoop. It is conducive to build up the terrestrial digital tv multi-channel single frequency network with effective coverage and strong stability.

With this innovative technology, our one set of wide-band frequency digital TV transmitter can transmit multiple TV channels, breaking through the limitation that the traditional transmitter only can do the single channel transmitting, which makes the investment in digital tv system significantly reduced, and our wide-band frequency digital TV transmitter also do not need to use the high power synthesizer, realizing the adjacent channel transmitting, it dramatically increase the utilization of wireless frequency resource, and the transmitting frequency can be modified at any time in the transmitting process. since we just need one set of wide-band frequency digital TV transmitter to build the network, the later stage energy consumption and the operation cost will be dramatically reduced. Building the network with only one wide-band frequency digital TV transmitter, it is relatively simple than the traditional networking method, it can effectively reduce the failure rate, this will effectively reduce the maintenance cost. Because our wide-band frequency digital TV transmitter have reduced the power combiner insertion loss, this will increase the effective power of the wide-band frequency digital TV transmitter, therefore, under the equal transmitting power, our wide-band frequency digital TV transmitter can cover more large area than the traditional single-channel transmitter, achieve the goal that covering the large area with low power.

Main Features

470--862MHz wide-band frequency response and low noise designDesign of low power consumption and linearization advances emitting power of the transmitter and reduces nonlinear distortion.Very low group delay feature, suitable for digital signal transmission.ALC keeps output of constant power, output VSWR detecting protectionApply to single-channel or multi-channel UHF digital television transmission systemBe used in the broadband repeating of HFC, AML, or MMDS digital TV signalRealize wireless network coverage of digital TV at a low cost.Modular design simplifies installation, field services and upgrade.Automatic and manual switching backup systems available.Build-in lightning protector with current-dividing series power prevents lighting surge and instant overvoltage.Local monitoring and control.Wireless remote monitoring and control (Optional)

Technical Specifications

Appearance Introduction of CKUB-T400 Transmitter

System Structure of CKUB – T400

Typical Application

Wide-band frequency Digital TV transmitter performance characteristics

In addition to meet the general requirement of the national standard terrestrial digital TV transmitter, the wide-band frequency digital TV transmitter should have the following characteristics:

I. Wide-band frequency response and low noise design

Wide-band frequency digital TV transmitter adaptive frequency bandwidth≥120MHz. Within the frequency bandwidth range, the transmitting frequency point can be adjusted freely at any time without affecting the overall transmitter performance. On the system broadband transmitting status, the spectrums shoulder distance @ fcenter±4.2MHz≤-40dBc,(fcenter±64MHz)≤-32 dBc. The equipment noise figure≤6 dB.

II. Modular structure, the power amplifier module hot plug design, to facilitate onsite equipment maintenance.

Balanced coupling structure, without the power combiner. On the multiple group power amplifier modules status, one group power amplifier module can be hot-swappable, in addition to lower transmission power, the machine performance doesn’t be affected.

III. The Power is measured by the output port full digital power. The equipment power should not be measured by 1dB Gain compression point output power. The equipment total power efficiency should not be less than 18%.

IV. Frequency stability < 5×10-8(Using an internal reference source), < 5×10-11(using an external reference source), meet the needs of broadband adjacent channel transmitting.

V. Meet the transmitting coverage needs in different power levels, having the high-power broadband transmitter type which digital power no less than 800W.

Terrestrial digital TV planning & design ability

Based on a wealth of long-term engineering expeirence of networking construction; under the strong support of professional institutions; with the assistance of professional design software and detailed and accurate geographic data, CEKE formed a good terrestrial digital TV netword planing and design capabilities.

Production Flow

Our Project