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Lectrosonics DPR

Digital plug-on transmitter with on-board recording


This unique plug-on transmitter design will ideally match any microphone or line level source via a standard XLR connector. The DPR can tune in 100 kHz or 25 kHz steps across the UHF television band from 470.100 to 607.950 MHz, with a selectable output power of 25 or 50 mW. The purely digital architecture utilizes AES 256-CTR encryption for high level security applications.
The transmitter is specially designed with high efficiency digital circuitry for extended operating time on two AA batteries, with status indicated by a multi-color LED. An IR (infrared) port is included to simplify setup with IR enabled receivers. Updates can be made via SD card.

The input amplifier uses an ultra low noise op-amp for quiet operation. It is gain controlled with a wide range, dual envelope limiter, providing over 30 dB of headroom above full modulation. A 24-bit A-D converter digitizes the audio, then filters out supersonic noise above 21 kHz.

Main Features:
• Wideband UHF tuning range – 470-608 MHz (470-614 MHz for E01 version)
• Accepts microphone or line level signals
• Selectable 5, 15, 48 volt phantom power
• Selectable 25/50 mW RF output power
• Adjustable low frequency roll-off
• Powered by two AA batteries
• IR (infrared) port for fast setup
• Remote controlled “dweedle” tones (audio tone set-up control)
• Time code jam sync with
• Solid machined aluminum housing
• On board recording
• Encryption 256 Bit AES, CTR Mode

Operating Frequencies:
 • US: 470.100 - 607.950 MHz
 • E01: 470.100 -614.375 MHz
• Frequency Selection Steps: 25 kHz
• RF Power output: Selectable 25/50 mW
• Frequency stability: ± 0.002%
• Digital modulation: 8PSK
Spurious radiation:
 • US: Compliant with ETSI EN 300 422-1 v1.4.2
 • E01: Compliant with ETSI EN 300 422-1 v2.1.2
• Equivalent input noise: –125 dBV (A-weighted)
• Input level: Nominal 2 mV to 300 mV, before limiting Greater than 1V maximum, with limiting
• Input impedance: 1K Ohm
• Input limiter: Dual envelope type; 30 dB range
• Gain control range: 55 dB in 1 dB steps; digital control
Modulation indicators:
 • Dual bi-color LEDs indicate modulation of -20, -10, 0, +10 dB referenced to full modulation
 • LCD bar graph
• Encryption: AES 256-CTR (per FIPS 197 and FIPS 140-2)
Audio Performance:
• Frequency Response: 25 Hz to 20 kHz, (+0, -3dB)
• Low frequency Roll-off: Adjustable for -3dB @ 25, 35, 50, 70, 100, 120 and 150 Hz
Input Dynamic Range:
 • 110 dB (A), before limiting
 • 125 dB (with full Tx limiting)
Controls & Indicators:
 • LCD w/membrane switches
 • LED audio level indicators
• Audio Input Jack: Standard 3-pin XLR (female)
• Phantom Power: 5V @ 18 mA max., 15V @ 15 mA max. and 48 V @ 4 mA max., plus “OFF”
• IR (infrared) port: For quick setup by transferring settings from an IR enabled receiver
• Antenna: Housing and attached microphone form the antenna.
• Battery: Two 1.5 Volt AA (lithium recommended)
Battery Life:
 • AA lithium; No Phantom Power: 6h 0m*
 • AA lithium; 48V Phantom Power: 3h 30m**
(*Tested with a dynamic microphone) (**Tested with a Sanken CS1 for a phantom-powered microphone)
• Weight: 7.8 ozs. (221 grams)
• Dimensions: 4.21” L [excluding antenna: DPR-A] x 1.62” W x 1.38” H (106.9 L x 41.1W x 35.0 H mm)
• Emission Designator: 170KG1E

List Price: $2,330.00
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