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    - Product -   TV Transmitters -> 500W~1KW TV Transmitter  
 


 
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Model : ZHC518A-500W
Product Name : 500W TV Transmitter
Exworks price : US$ 6635
Description: VHF/UHF TV transmitter Professional designed and manufactured,high reliability and low price.VHF&UHF.300W/500W/1KW/2KW.1-meter 19'-rack
 

TV Transmitter UHF/VHF all band available
Power: 300W/500W/1KW/2KW in a 1-meter height 19' rack
Professinal designed for TV stations
Big color LCD with touch panel displays real-time parameters
Switched power supply
High reliability
Low price

Overview:
This product is the all solid-state Single-channel TV Transmitter, it adopts professional TV exciter, and it can use the single/duel exciter configuration, switching automatically.
This transmitter has a variety of linear and non-linear pre-correction function, carrier frequency offset, and precision bias (with external precision reference source) function.
It can prefabricate and control the half-power output, and it has remote control telemetry interface.
The power amplifier used LDMOS FET, the analog and digital are both compatible, and it used high-quality switch parallel power.
The power amplifier and power supply are both used hot-plug devices.
The power loss and standing wave of the one-time synthesis power combiner is small.
The module of power amplifier display the working parameters in real-time.
The whole machine has the protection of over-current, over temperature, over power and over-standing wave ratio.
The master touch screen displays the working parameters of the whole machine and the module of power amplifier (PA) in real-time.
The 500W transmitter is installed in one 19inch chassis; it’s suitable for medium or small TV station.

Features:
    The whole machine is single-channel, image with audio together.
    The management and monitoring are intelligent and on network, it has the external PC interface.
    It has the technical data detection, monitoring systems and full-featured computer control software with auto-diagnostic function. All technical parameters can be read through the LCD display panel.
    Comprehensive protection measures can reduce the damage of equipments. This machine has protection about no video; VSWR is too large, overheating, over-stimulus, missing phase protection and lightning protection. The switch has protection about overvoltage, over current, under voltage, over temperature, short circuit and lightning protection.
    All power supplies are switching power supplies; high efficiency, excellent regulator range, strong adaptable from the change of the external voltage.
    It adopts modular design concept.
    Hot-pluggable design: power amplifier and switching power are supporting the Hot-plug, it’s easy to debug and maintenance; improve the reliability.
    The fan is built-in the chassis, the transmitter has a compact structure and a beautiful shape.

Technical Specifications:

Overall performances:
1.    Working frequency                      UHF 13~48 Channel arbitrary choice
2.    Output power                              500W (Synchronous)
3.    Output impedance                        50Ω
4.    Inter-modulation distortion:            ≤-50dB
5.    Useless transmission                     In adjacent channel ≤-40dB
                                                            
  Out adjacent channel ≤-60dB
6.    RF output interface                       7/16"
7.    Power supply                               Single-phase 220V
8.    Shape size                                    1135mm×675mm×950mm
9.    Weight                                         136KG

Image performance
1.    Video frequency input level:           1VP-P positive polarity
2.    Video frequency input impedance 75Ω
3.    DG                                              ±8%
4.    DP                                               ±7°
5.    Luminance nonlinear                      ≤12%

Sound performance:
1.    Audio input level                           0dBm±6dB
2.    Audio input impedance                 10KΩ (imbalance)
3.    Maximum frequency deviation      ±50KHz
4.    Harmonic distortion                      ≤1%
5.    Signal-to -clutter                           ≥60dB



 
     
 
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