- Digital Encryption: Secure audio transmission
- Wide Frequency Range: Enhanced audio quality
- Compact Design: Portable and lightweight
- User-Friendly Interface: Easy to use
- High-Quality Audio Codec: Clear sound reproduction
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The DBu transmitter is a second generation design with specially developed, high efficiency digital circuitry for extended operating time on two AA batteries. The transmitter can tune in coarse or fine steps across the UHF television band from 470.100 to 607.950 MHz, with a
selectable output power of 25 or 50 mW. The pure digital architecture enables AES 256-CTR encryption for high level security applications. Studio quality audio performance is assured by high quality components in the preamp, wide range input gain adjustment and DSP-controlled limiting. Input connections and settings are included for any lavaliere microphone, dynamic microphones and line level inputs. Input gain is adjustable over a 44 dB range in 1 dB steps to allow an exact match to the input signal level, maximizing the dynamic range and signal to noise ratio.
Features
• Tunes across entire UHF frequency range
• 256-bit encryption - AES 256-CTR
• Selectable RF power at 25 and 50 mW
• USB port for firmware updates
• Wide range input gain adjustment
• DSP-controlled input limiter
• Two AA battery power
• Solid machined aluminum housing
Operating Frequencies: 470.100 - 607.950 MHz
Frequency Selection Steps: 25 kHz
RF Power output: Selectable; 25 or 50 mW
Frequency Stability: ± 0.002%
Digital Modulation: 8PSK
Equivalent input noise: –128 dBV
Input level: Nominal 2 mV to 300 mV, before limiting
Greater than 1V maximum, with limiting.
Input impedance: • Mic: 300 Ohm
• Line: 2k Ohm
Input limiter: Dual envelope type; 30 dB range
Gain control range: 44 dB in 1 dB steps; digital control
Modulation indicators:
• Dual bicolor LEDs indicate modulation of -20, -10, 0 and +10 dB referenced to full modulation
• LCD bar graph
Controls:
• Top panel toggle switch; programmable as power, mute or none (off) function
• Side panel membrane switches with LCD interface for power on/off and all setup and configuration controls
Audio Input Jack: Switchcraft 5-pin locking (TA5F)
Antenna: Galvanized steel, flexible wire
Battery: Two AA Duracell Quantum recommended
Battery Life: 5 hours; Duracell Quantum alkaline
Weight: 6.24 ounces (177 grams), including two AA batteries and wire belt clip
Dimensions: 3.2 x 2.5 x .74 in. (86 x 62 x 19 mm)
Emission Designator: 200KG1E
Specifications subject to change without notice.
Lectrosonics DBu Manual
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