Gemini UHF-4200HL Dual 100-Channel UHF Wireless System

Gemini UHF-4200HL Dual 100-Channel UHF Wireless System

Gemini UHF-4200HL is a wireless microphone system designed for live sound reinforcement in venues such as events, presentations, fitness classes, and houses of worship. It enables wireless audio transmission between beltpack transmitters and a dual-channel receiver for presenters and performers, supporting microphone-based communication and amplification workflows. This makes it ideal for environments where multiple presenters require mobility and consistent wireless microphone operation.

The system operates across selectable UHF transmission channels and uses a phase locked loop circuit to maintain frequency stability during operation. A dual-channel receiver manages signal reception and synchronization with beltpack transmitters, while LED indicators display RF signal, AF signal, and selected channels for system monitoring.

This wireless system supports applications where presenters, instructors, or performers require freedom of movement without wired connections. Multiple receivers can be deployed within the transmission frequency band to support expanded microphone setups. The included headset and lavalier microphones allow flexible use in speech, instruction, and presentation environments.

Key Features

• Transmission Channels: Provides 100 selectable UHF transmission channels for flexible frequency management.
• Wireless Range: Supports transmission distances up to 250 feet under optimal conditions.
• Channel Selection: Allows manual channel selection or automatic synchronization between receiver and transmitters.
• Receiver Indicators: LED indicators display RF signal, AF signal, and active transmission channel.
• Audio Outputs: Receiver provides balanced XLR and unbalanced 1/4 inch output connections for mixers and processors.
• PLL Circuit: Phase locked loop circuit maintains frequency stability and reduces phasing issues.
• Battery Operation: Beltpack transmitters operate up to 8 hours using two AA batteries.

Technical Specifications

Receiver
Frequency Range
USA: 682 to 698 MHz
Europe: 854 to 865 MHz

Transmission Range
250' (76.2 m)

Receiving System
PLL synthesized

Frequency Stability
± 0.005%

Frequency Response
50 to 15,000 Hz ±3 dB

Signal-to-Noise Ratio
90 dB

Modulation Mode
FM

IF Frequency
80.5 MHz

THD
1% at 1,000 Hz

Sensitivity
10 dBuV (FM: 40 kHz, S/N > 85 dB)

Power Supply
12 VDC

Audio Output
Balanced XLR
Unbalanced 1/4"

Dimensions
1.8 × 5.43 × 8.27" (45 × 138 × 210 mm)

Transmitter
RF Power Output
< 10 dBm

Oscillation Mode
PLL Synthesized

Spurious Emission
> 50 dB below carrier frequency

Frequency Stability
30.005% with quartz control

Modulation
± 60,000 Hz

Current Consumption
100 mA

Battery Type
2 x AA Alkaline

Battery Life
8 Hours

Microphone Element
Condenser

Polar Pattern
Cardioid

Dimensions
2.48 × 0.78 × 4.33"
(63 × 20 × 110 mm)

Installation / Use Cases

• Use the dual-channel wireless microphone system for presentations, fitness instruction, houses of worship, events, and live sound applications where two users need freedom of movement.
• Choose between the included headset and lavalier microphones for hands-free speech or performance use.
• Connect the receiver to compatible mixers, amplifiers, or audio processors through balanced XLR or unbalanced 1/4-inch outputs.
• Use the selectable UHF channels and automatic transmitter synchronization to set up the system in multi-channel wireless environments.

What’s in the Box

(1) Gemini UHF-4200HL Dual 100-Channel UHF Wireless System
(1) Dual Channel UHF Receiver
(2) Bodypack Transmitter
(2) Headset/Lavalier Microphone