RC-7970U UHF Wireless Microphone with USB MP3 Player And BT
Arvox RC‑7970U adalah sistem mikrofon nirkabel UHF yang cukup solid dan serbaguna, menawarkan kualitas audio yang baik, jangkauan yang luas, serta fitur musik tambahan seperti Bluetooth dan pemutar USB. Sangat cocok untuk penggunaan di acara-acara kecil hingga menengah.
The RC‑7970U is a versatile UHF wireless microphone system featuring an integrated USB MP3 player and Bluetooth connectivity. Designed for speeches, karaoke, small events, and PA systems, it offers flexibility and ease of use for both live audio input and media playback.
| System specifications | |
| Frequency range | 500-900MHz |
| Modulation mode | Broadband FM |
| Adjustable range | 50MHz |
| Number of frequency preset | 200 |
| Channel spacing | 200kHz |
| Frequency stability | ± Within 0.005% |
| Dynamic range | > 105dB |
| Maximum frequency offset | ± 45KHz |
| Audio response | 40Hz-18KHz (± 3dB) |
| Comprehensive SNR | > 110dB |
| Comprehensive distortion | ≤ 0.2% |
| Working temperature | – 25 ℃ – + 40 ℃ |
| Size | 480X200X44mm |
| Net weight | 3.73kg |
| Receiver specifications | |
| Receiver mode | Secondary frequency conversion superheterodyne |
| Input power | 5W |
| Wireless interface | BNC / 50 Ω Sensitivity: 12 dB μ V (80dBS/N) |
| Sensitivity adjustment range | 10-32db μ V |
| Spurious suppression | ≥ 95dB |
| Maximum output level | + 10 db |
| Transmitter index | |
| Antenna program
Built in antenna |
1 / 4 wavelength whiplash antenna and handheld microphone are used for the transmitter |
| Output power | 20MW |
| Spurious suppression | – 60dB |
| Power supply | two AA batteries |
| Use time | about 8-10 hours |
System & Receiver Specifications
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Operating Frequency: 500–900 MHz with 200 preset channels and 50 MHz adjustable range
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Modulation: Broadband FM, with 200 kHz channel spacing and frequency stability of ±0.005%
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Dynamic Range: > 105 dB; SNR > 110 dB; distortion ≤ 0.2%; audio response 40 Hz–18 kHz (± 3 dB)
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Receiver Output: Max +10 dB, spurious suppression ≥ 95 dB; sensitivity ~12 dBµV at 80 dB SNR
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Form Factor: 480 × 200 × 44 mm, rack-mountable, weighing 3.73 kg; operates at –25 °C to +40 °C
Microphone (Transmitter) Specs
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Antenna Options: Built-in or ¼-wave whiplash for handheld mics
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RF Output Power: 20 mW; spurious suppression ≥ 60 dB
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Power Source: Two AA batteries, providing ~8–10 hours of operation
Audio Media Features
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USB MP3 Playback: Plug in any USB drive and playback tracks directly through the receiver.
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Bluetooth Input: Stream audio wirelessly from phones or tablets.
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Flexible Input Options: Use either wireless mics, USB media, or Bluetooth—and mix them as needed.
Key Benefits
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Multipurpose Audio System: Great for live vocals and background music in one unit.
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High Sound Quality: Excellent dynamic range and low noise/distortion.
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Wide Frequency Range: Flexible channel selection minimizes signal interference.
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Durable and Professional: Rack-mountable structure, suitable for PA setups and event rigs.
