Lectrosonics DHu Digital Handheld Transmitter

DHu Digital Handheld Wireless Transmitter with No Microphone Capsule (470 to 608 MHz)

The DHu Digital Hybrid Wireless handheld transmitter represents a versatile solution for a variety of wireless microphone applications including live performance, broadcast, AV rental and houses of worship. The design incorporates advanced features to provide high-quality speech and vocal reinforcement.

Interchangeable Capsules

Lectrosonics offers the HHC cardioid condenser capsule. Thread-on capsules from other manufacturers using a 1.25" opening and 28 thread pitch can also be used, including those from manufacturers such as EV, Shure, Heil SoundTM, Earthworks, Telefunken and others.*

The transmitter benefits from a 4th generation design with specially developed, high-efficiency digital circuitry for extended operating time on two AA batteries. The transmitter can tune across the UHF television band from 470 to 608 MHz (470 to 614 Mhz for export versions) with a selectable output power of 25 or 50 mW. The pure digital architecture enables AES 256-CTR encryption for applications that require high-level security.

Studio quality audio performance is assured by high-quality components, wide range audio gain adjustment in fine increments, and a DSP-controlled, dual envelope limiter. Low-frequency audio roll-off is adjustable to tailor the sound as needed for a variety of applications.

Setup is easy using membrane switches on a concealed control panel. An IR (infrared) port on the control panel allows settings to be transferred between receiver and transmitter.

A programmable switch on the outside of the housing can be configured for push-to-talk, cough, mute, talkback, power on/off, or be bypassed.

Features:

• 4th generation digital design
• 256-bit encryption - AES 256-CTR
• Interchangeable thread-on capsules
• Battery powered by two AA batteries
• Selectable RF output power at 25 or 50 mW
• 2-way IR (Infrared) port for fast setup
• 24 bit/48 kHz digital conversion
• Rugged machined aluminum housing

Specifications:

• Frequency range: 470.100 - 607.950 MHz
• Frequency selection steps: Selectable; 100 kHz or 25 kHz
• RF Power output: Selectable; 25 or 50 mW
• Frequency stability: ± 0.002%
• Digital Modulation: 8 psk
• Spurious radiation: Compliant ETSI EN 300 422-1 v1.4.2
• Operating temperature range: -20ºC to +50ºC
• Input compressor: Dual envelope compressor, >30 dB range
• Gain control range: 45 dB; semi-log menu-driven control; 1 dB steps
• Modulation indicators: Dual bicolor LEDs indicate modulation of -20, -10, 0 and +10 dB referenced to full modulation, LCD bar-graph indicator
• Frequency response: 40 Hz to 20 kHz (+/- 1dB)
• Low frequency roll-off: -3 dB @35, 50 and 70 Hz; selectable; 36 dB/octave
• Controls:
  External: Programmable mute/talkback button
  Battery compartment: Power, mute disable, menu/select, up/down, and back arrow buttons for menu selection and settings
• Battery: 2x AA with polarity protection and battery ejector
• Battery life: At 50 mW: 5 hours (Duracell Quantum); battery status is transmitted to Lectrosonics receivers
• Capsule Interface: 1.25" opening and 28 thread pitch Power available: 5V, 25 mA max Input impedance: 1000 Ohms
• Weight: 12.1 oz. with batteries and HHC capsule
• Dimensions: 9.5" long x 1.97" diameter at largest point