- Contact Person : Mr. Huang Yi
- Company Name : Anshan Jiehv Broadcasting Electronic Technology Co., Ltd.
- Tel : 86-135-41269116
- Fax : 86-28-83116698
- Address : Liaoning,Anshan,No.9 of Yong Ning Street, High-Tech industry development district(western area)
- Country/Region : China
3kw UHF/VHF TV transmitter
3KW UHF Television Transmitter Configuration List
Component Title | Configuration Quantity | Specification Model |
Exciter | 2 set | The exciter is advanced JHV-04 exciter |
End Power Amplifying Module | 4 sets | Each Groups Peak Value Power 900W |
Switch Power | 3 set | 32V/2500W |
Main Controlling System | 1 set | Computer Monitoring System and Monitoring Software |
Cooling system | 1 set | DF Model Centrifugal Air Blower |
Machine cabinet | 1 sets | 1997mm (Height) ×565mm (Width) ×1100mm (Depth) |
TV Standard : PALD or conform to the requirements |
Frequency Scope: 48.5-223MHz/470-870MHz |
Rated Output Power: 3KW (Peak Sync) |
Image Modulation Degree: ≤87.5% |
The difference of Sound Carrier Frequency and Vision Carrier Frequency: 6.5±0.001MHz |
Vision Carrier Frequency Stabilization: 300Hz/month |
Radio Frequency Output: 1-5/8 or L27 |
Vision/sound Power Ration: 10:1 |
Nominal Load Impedance:50Ω (Same Axis) |
Power Consumption: 6KVA |
Dimension:1997mm (Height) ×565mm (Width) ×1100mm (Depth) |
2.2 Image Perform |
Video Input Level: 1Vp-p normal polarity (Synchronizing Pulse 0.3 V) |
Video Input Impedance: 75Ω (Same Axis) |
Frequency Stabilization: superior ±300Hz/month |
Light-intensity nonlinear: ≤10% |
Amplitude Frequency Characteristics |
Relative to Vision Carrier Frequency: See table 1 |
Group delay-frequency characteristics |
The largest limited scope is ±50ns; when comes to 4.43MHz, it is ±30ns |
Differential Gain Distortion: ≤5% |
Differential phase distortion: ±40 |
Second-harmonic output: ≤-60dB |
Periodic clutter Signal-to-clutter ratio: (≤1KHz):≥50dB |
Continuous random wave signal-to-noise ratio (10KHz6MHz): :≥50dB |
Luminance/brightness gain inequality: ≤5% |
Luminance/brightness delay inequality: ±30ns |
Field frequency square wave: ≤2% |
Linear frequency square wave:≤2% |
2T Pulse: ≤2% |
2.3 Sound Performance |
Frequency Stabilization: superior to ±300Hz/month |
Frequency Offset: ±50KHz (100% modulation) |
Video Input Level: 0±6dBm |
Video Input Impedance: 600Ω (balance) |
Amplitude-frequency response: ≤±1dB(30Hz15KHz) |
Pre-emphasis time constant: 50μs |
Frequency Modulation Noise: ≤-60dB |
Harmonic Distortion(Frequency Offset 50KHz): ≤1%(30Hz15KHz) |
Cross Modulation Distortion: ≤10% |
2.4 Environment Condition |
Temperature: 0+35 |
Relative Humidity: ≤95%(25) |
Atmospheric Pressure: 86106KPa |
Power Supply: 3´380VAC(±15%), Frequency: 50Hz±2Hz |
Temperature: 0+35
Relative Humidity: ≤95%(25)
Atmospheric Pressure: 86106KPa
Power Supply: 3´380VAC±15%, Frequency50Hz±2Hz
table 1
f(MHz) | -4.43 | -1.25 | -0.75 | -0.5 | 0 | +1.5 | +3 | +4.43 | +6 | ≥+6.5 |
Upperlimit(dB) | -30 | -20 | +0.5 | +0.5 | +0.5 | 0 | +0.5 | +0.5 | +0.5 | -20 |
Lowerlimit(dB) | -∞ | -∞ | -4 | -1.5 | -1.5 | 0 | -1 | -1 | -4 | -∞ |
3kw UHF/VHF TV transmitter
