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Tuoying HD AV to RF Modulator – HDTV CATV Signal Converter
Tuoying HD AV to RF Modulator – HDTV CATV Signal Converter
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Tuoying HD AV to RF Modulator – HDTV, AV & CATV Signal Conversion
The Tuoying HD AV to RF Modulator is a professional-grade signal conversion device designed for hotels, cable TV distribution systems, and broadcast facilities. It converts HDMI/AV input signals into a standard RF output, making it easy to distribute high-definition content across existing coaxial cable networks — no rewiring required.
Whether you're managing a hotel entertainment system, a CATV headend, or a multi-room AV setup, this modulator delivers stable, high-accuracy signal transmission with an intuitive LED channel display and wide compatibility with international broadcast standards.
Made in Mainland China.
Key Features
- MCU-Controlled PLL: Delivers high accuracy and stability for both video carrier and audio subcarrier frequencies.
- Selectable Audio Subcarrier: Choose between 5.5 MHz, 6.0 MHz, or 6.5 MHz to suit your regional broadcast standard.
- Dual Input Source: Accepts both AV (composite) and HD signals — switch between sources as needed.
- RF Loop Input: Pass-through RF input allows daisy-chaining with other equipment in your cable distribution system.
- Auto Memory at Power Outage: Settings are automatically stored when power is interrupted, so there's no need to reconfigure after a restart.
- LED Channel Display: Clear front-panel LED readout for easy channel identification; supports both CATV and standard TV channel selection.
- Double Sideband Modulation: Enables non-adjacent channel usage for flexible frequency planning.
- Adjustable Output Level: Fine-tune RF output level to match your distribution network's requirements.
- Wide Frequency Range: Output covers 47–870 MHz, compatible with most CATV and terrestrial TV infrastructure.
- CE Certified: Meets European safety and electromagnetic compatibility standards.
Technical Specifications
| Parameter | Specification |
|---|---|
| Output Frequency Range | 47–870 MHz |
| Output Level | 90 dBµV |
| A/V Ratio | -15 ± 2 dB |
| Visual Carrier Frequency Accuracy | ± 5 KHz |
| Output Return Loss | 14 dB |
| Spurious Rejection | 50 dB |
| Output Impedance | 75 Ω |
| Video S/N Ratio | 55 dB |
| Video Freq. Response | +2.5 dB (50 Hz to 4.2 MHz) |
| Video Input Level | 0.8 Vp-p for 80% + 10% modulation |
| Video Input Impedance | 75 Ω |
| Audio Subcarrier | 5.5 / 6.0 / 6.5 MHz (selectable) |
| Audio Freq. Deviation | ± 50 KHz |
| Audio Input Impedance | 600 Ω |
| HD Input Resolution | 480i, 480p, 576i, 576p, 720p, 1080i, 1080p |
| Power Input | 100–240 V AC, 50–60 Hz |
| Operating Temperature | -20°C to +50°C |
| Certification | CE |
Ideal Use Cases
- Hotel and hospitality TV distribution systems
- CATV headend signal encoding and re-modulation
- Multi-room home or office AV distribution over coax
- Connecting modern HD sources to legacy coaxial cable networks
- Community antenna television (CATV) and cable headend facilities
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For guidance on broadcast signal standards and cable TV technical requirements, refer to the FCC Consumer Guide on Cable Television or explore signal distribution best practices at NIST.gov.
Frequently Asked Questions
Q: What is an HD AV to RF modulator and what does it do?
A: An HD AV to RF modulator converts HDMI or composite AV video/audio signals into a standard RF (radio frequency) signal that can be distributed over a coaxial cable network. This allows a modern HD source — such as a set-top box, media player, or camera — to be broadcast to multiple TVs over existing coaxial infrastructure, as used in hotels, hospitals, and cable TV headends.
Q: Which HD resolutions does this Tuoying modulator support?
A: This modulator supports a wide range of HD input resolutions including 480i, 480p, 576i, 576p, 720p, 1080i, and 1080p, ensuring compatibility with most modern HD sources.
Q: Can I use this modulator in my country's broadcast standard?
A: Yes. The selectable audio subcarrier frequencies (5.5 MHz, 6.0 MHz, 6.5 MHz) make this unit compatible with multiple international broadcast standards. The wide AC input range (100–240 V, 50–60 Hz) also ensures global power compatibility.
Q: Does this unit retain settings after a power outage?
A: Yes. The modulator features automatic settings memory, so all configured channel and signal settings are preserved even after an unexpected power interruption — no manual reconfiguration needed when power is restored.
