The DH‑769 is a dual‑channel professional UHF wireless microphone system designed for live vocal use, presentations, performances, and public address applications. It uses frequency‑agile UHF PLL‑synthesized technology to deliver stable, interference‑resistant wireless audio with selectable channels for clear operation in different environments.
| Specification | Detail |
|---|---|
| System Type | Dual‑channel UHF wireless microphone system (2 handheld mics + receiver) |
| Frequency Range | UHF high band (approx. 790 MHz – 865 MHz, variable by region) |
| Channels | Up to 32 user‑selectable PLL channels within available UHF bands |
| Operating Range | Up to ~90 – 150 m (line‑of‑sight estimate depending on environment) |
| Transmitters | 2 × handheld dynamic wireless microphones (balanced output) |
| Receiver Antennas | Detachable ¼‑wave antennas on front of receiver unit |
| PLL Synthesized System | PLL frequency synthesis for stable transmission and reduced interference |
| Companding Design | Compressor‑expander circuitry to extend range and reduce noise |
| Receiver Display | Backlit LCD (for status, channel info, etc.) |
| Receiver Output | ¼″ (6.35 mm) unbalanced audio output plus possible additional outputs on some units |
| Transmitter Power | Approx. 10 – 30 mW RF output |
| Battery (Handheld) | 2 × 1.5 V AA batteries per mic; ~6 – 8 hr typical life |
| Applications | Vocal performance, presentations, church, events, musicals, PA use |
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