400 Вт бывший в употреблении беспроводной Аналоговый VHF/UHF ТВ аудио
- Категория: Radio & TV Broadcasting Equipment >>>
- Поставщик: Chengdu,Tengyue,Electronics,Co.,Ltd.
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Описание и отзывы
Трекер стоимости
| Месяц | Минимальная цена | Макс. стоимость |
|---|---|---|
| Sep-19-2025 | 0.50 $* | 0.23 $* |
| Aug-19-2025 | 0.60 $* | 0.93 $* |
| Jul-19-2025 | 0.72 $* | 0.15 $* |
| Jun-19-2025 | 0.44 $* | 0.91 $* |
| May-19-2025 | 0.56 $* | 0.7 $* |
| Apr-19-2025 | 0.28 $* | 0.13 $* |
| Mar-19-2025 | 0.82 $* | 0.61 $* |
| Feb-19-2025 | 0.80 $* | 0.67 $* |
| Jan-19-2025 | 0.6 $* | 0.37 $* |
Характеристики
400W Used Wireless Analog VHF/UHF Wireless TV Audio Transmitter
400W Used Wireless Analog VHF/UHF Wireless TV Audio Transmitter
Outline
The TY-1340A Used Wireless Analog VHF/UHF TV Transmitter is a kind of analog TV transmitter working on VHF/UHF band (170-860MHz). It supports various TV standards like PAL I,PAL B/G, PAL D/K,NTSC,SECAM, and can match with single modulator/exciter and dual-modulator/exciters.Its main features include multiple power level, high reliability, simple process in installment and debugging, and superior cost performance.
Main features
- With RFU modularization, broadband and high consistency design, superlinear and all-solid-state power amplifier.
- With large LCD panel for indoor type showed system real time working state, maintenance and management of system can be achieved easily.
- It adopts modular design concept.
- It can upload to digital transmitter smoothly in future.
- Automatic Level Control in larger dynamic range(ALC); Automatic Gain Control(AGC); adaptation of wide dynamic range in different environments.
- With over-VSWR, over-voltage, over-current, over-heat and lighting auto-protective functions.
- With built-in big power fan, transmitter can run in a stable and reliable condition.
- Optional SMS alarming module for outdoor type can monitor the operation state of transmitter in real time.
Transmitter Specification
RF Index | TV system standard | PAL/NTST/SECAM |
Frequency Range | 170-860MHz | |
The rated output power | 400W (synchronous top power) | |
Image/Audio power ratio | 10:1 | |
Output impedance | 50Ω | |
frequency stability | ±300Hz | |
output power loss | +0.25dB | |
In-band intermodulation | ≤-52dB | |
Out adjacent channel useless emission | ≤-60dB | |
In adjacent channel useless emission | ≤-40dB | |
Video Index | Video input level | 1Vpp±3dB |
Video input impedance | 75 Ω | |
Video input: reflection loss () | ≥34dB(frequency:0MHz~5.5MHz) | |
Modulation Mode | AM, negative polarity | |
Modulation | ≤87.5% | |
2T Sine SW distortion KP | ≤2% | |
2T Sine SW/Bar pulse amplitude ratio | ≤2% | |
Brightness non-linearity distortion | ≤10% | |
Blanking level stability | ±2.5% | |
Differential gain DG | ±5% | |
Differential phase DP | ±5% | |
Chroma/Brightness gain difference | ≤10% | |
Chroma/Brightness time delay difference | ±30ns | |
Continuous SCR (rms value, unweighted) | ≥50dB | |
Continuous SCR (rms value,Weighted) | ≥58dB | |
Periodic signal/noise ratio (peak value) | ≥50dB | |
CF Carrier parasitic phase modulation | ±5° | |
Group delay | ≤±50ns | |
Audio Index | Audio input level | 0dBm±6dB, 600Ω (Bal.) or 10kΩ (Unb.) |
Modulation | FM | |
Pre-emphasis | 50μs | |
MAX. Frequency deviation | ±50KHz | |
Harmonic distortion | ≤1%(30Hz~15KHz) | |
Amplitude frequency characteristic | ±1dB(30Hz~15KHz,50%modulated 50μs) | |
FM signal to clutter ratio (SCR) | ≥60dB(1KHz,100% modulation) | |
AM noise (no modulation) | ≤-50dB | |
Carrier offset | ±300Hz | |
AM noise | ≤-50dB | |
Intercarrier noise | ≤-45dB | |
Image/Audio intermodulation | ≤10% | |
Environment | Cooling system | Forced air cool |
Operation temperature | 0~40℃ | |
Relative humidity | <95%(Non condensation) | |
Atmosphere pressure | 86~106Kpa | |
Power supply | AC 220V±10%,50/60Hz or Customized |
Modulator Specification:
RF Index | Output Frequency | 45-870MHz |
Frequency Accuracy | ±5KHz | |
Output Level | 113dBmV | |
Outband Suppression | ³60dB | |
Sideband Suppression | ³60dB | |
Output Impedance | 75W | |
A/V Ratio | -10dB ~ -20dB | |
Video Index | Input Level | 0.6 ~ 1.5Vp-p |
Input Impedance | 75W | |
Input Return Loss | 30dB min | |
K Value | 4% max( 2T pulse) | |
SNR | 50dB | |
Delay Response | 45nsec | |
Flatness | ±1dB | |
Differential Gain | ±4%(Modulation 87.5) | |
Differential Phase | ±4°(Modulation 87.5) | |
Aduio Index | Input Level | -10 ~ 10 dBm |
Input Impedance | 10KW min | |
Flatness | ±1dB | |
Harmonic Distortion | 1% | |
SNR | -60dB | |
Power Supply | AC Input | 110-220V AC |
Typical application
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