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Lectrosonics SRB Camera Slot Dual UHF Receiver

Abel Code: LEC-SRB
Mfr. Code: SRB
Estimated to Ship – 5-10 Business Days
Special Order Only
This is a special order item. You will be charged upon placing your order, which is non-cancelable and non-returnable.
The SRB is a two-channel, slot-mount, Digital Hybrid Wireless diversity receiver that offers two independent channels and fits into the standard UHF receiver slot found on compatible professional cameras.
Key Highlights
  • Dual Channel UHF Receiver
  • Uni-Slot compatible
  • LCD interface


The Lectrosonics SRB Camera Slot Dual UHF Receiver uses innovative technology to combine the advantages of digital audio with the advantages of analog RF transmission. The result delivers the superior sound quality of a digital system and the excellent range of an analog system. 

A proprietary algorithm encodes the digital audio information into an analog format which can be transmitted in a robust manner over an analog FM wireless link. The receiver employs state-of-the-art filters, RF amplifiers, mixers and detector to capture the encoded signal and a DSP recovers the original digital audio.

This digital/analog hybrid technique has some very beneficial properties. As the information being transmitted is digitally encoded, immunity to noise is much greater compared to what a compander can offer. The encoded audio is sent in analog format, preventing spectral and power efficiency and operating range from becoming compromised.

Under weak RF conditions, the received signal degrades gracefully, like an analog system, delivering as much usable audio as possible at maximum range. Since the audio is free of compander artifacts, pumping and breathing problems are also greatly reduced.

The design consists of two separate receivers built into a single, ultra compact housing with interchangeable adapters for video camera wireless receiver slots and stand-alone use. Digital Hybrid Wireless® technology provides superb, compander-free audio quality and compatibility with other wireless systems. The RF performance is extremely stable over a very wide temperature range, making the receiver perfectly suited to the rough environmental conditions found in field production.

The front panel features a menu-driven LCD interface and four membrane switches used to view and alter settings. Audio outputs are provided on the rear panel for camera slots or other audio devices. An integrated spectrum analyzer scans across the tuning range of the receiver to simplify finding clear operating frequencies.

This is the basic receiver with audio outputs on the rear panel only. 


Camera Compatibility:


All current Ikegami camcorders with Uni-Slot receiver mounts are dual-channel capable in the slot with a simple switch activation on the UI board, including models:

  • HDS-V10
  • HDN-X10
  • DNS-33W



Cameras currently shipping with the two-channel* audio operation within the receiver slot (Unislot) with the SR/SRa Receivers. If you have an older version of these cameras, you may need a firmware upgrade available from Panasonic. SR Compatibility with Panasonic Professional Camcorders:

  • AG-HPX300
  • AJ-HPX2000
  • AJ-HPX2100
  • AJ-HPX2700
  • AJ-HPX3000
  • AJ-HPX3700

*NOTE: SRb, SRb5p, SR, SRa, SR5P and SRa5P Receivers all operate in diversity mode in either single or dual-channel modes.

Cameras requiring SRa5P Receiver (sold separately) and external audio inputs for two channel operation:

  • AG-HPX500
  • AG-HDX900
  • AJ-SPX900/800
  • AJ-SPC700

NOTE: Contact your AbelCine salesperson for details and questions regarding compatibility.



  • Operating Frequencies (MHz):
    • Block 470: 470.100 - 495.600
    • Block 19: 486.400 - 511.900
    • Block 20: 512.000 - 537.500
    • Block 21: 537.600 - 563.100
    • Block 22: 563.200 - 588.700
    • Block 23: 588.800 - 607.900 and 614.100 - 614.300
    • Block 24: 614.400 - 639.900
    • Block 25: 640.000 - 665.500
    • Block 26: 665.600 - 691.100
  • Frequency Adjustment Range: 25.5 MHz in 100kHz steps
  • Channel Separation: 100 kHz
  • Receiver Type: Dual conversion, superheterodyne
  • IF Frequencies:
    • 1: 248.450 MHz and 350.000 kHz
    • 2: 243.950 MHz and 250.000 kHz
  • Frequency Stability: +/- 0.001 %
  • Front End Bandwidth: 26 MHz @ -3 dB
  • Sensitivity:
    • 20 dB SINAD: 1.0 uV (-107 dBm), A weighted
    • 60 dB Quieting: 2.2 uV (-100 dBm), A weighted
  • Squelch quieting: Greater than 100 dB typical
  • AM rejection: Greater than 60 dB, 4 uV to 1 Volt
  • Modulation acceptance: 85 kHz
  • Image and spurious rejection: 85 dB
  • Third order intercept: 0 dBm
  • Diversity Method: SmartDiversityTM phased antenna combining or Ratio Diversity using both receivers for a single audio channel
  • FM Detector: Digital Pulse Counting Detector operating at 250 and 350 kHz
  • RF Spectrum Analyzer: Coarse and fine scanning modes for RF spectrum site survey
  • Antenna Inputs: 50 Ohm; SMA female connectors
  • Audio Outputs Connectors:
    • Interchangeable D connector adapters for camera slot interfaces
    • Dual TA3 male (mini XLR) balanced output adapter
    • Balanced output adapter with fixed cables
  • Front Panel Audio Output: N/A
  • Audio Output Level: Adjustable -50 to +5 dBu in 1 dB steps; unbalanced output is 6 dB lower
  • Audio Channel Crosstalk: -80 dB or better
  • Front Panel Controls and Indicators:
    • Sealed panel with membrane switches
    • LCD monitors pilot tone; antenna phase, receiver battery level; transmitter battery status; audio level, RF level Audio Test Tone: 1 kHz, -50 dBu to +5 dBu output (bal); 1% THD
  • Transmitter Battery Type Selection: 9V alkaline, 9V lithium, AA alkaline, AA lithium, NiMH
  • Phase Invert: Audio output phase normal or inverted
  • Compatibility modes:
    • HYB native Digital Hybrid mode
    • 3 non-Lectrosonics (call factory)
    • 200 Lectrosonics 200 Series
    • 100 Lectrosonics 100 Series
    • HYB/TB Digital Hybrid w/ Talkback
    • 7 non-Lectrosonics (call factory)
    • 6 non-Lectrosonics (call factory)
    • IFB Lectrosonics IFB
  • SmartNR (noise reduction): OFF, NORMAL, FULL modes (available in Digital Hybrid mode only)
  • Audio Performance (Overall System):
    • Frequency Response: 32 Hz to 20 kHz (+/- 1dB)
    • THD: 0.3% (system) typical in Digital Hybrid mode
    • Signal-to-Noise Ratio (dB): 95 dB or better (overall system, Digital Hybrid mode)
    • Total Harmonic Distortion: 0.2% typical (400 Series mode)
    • Input Dynamic Range: 95 dB (with full TX limiting)
  • Rear Panel Controls and features:
    • XLR audio output jack;
    • External DC input;
    • Battery compartment access
  • Powering and current consumption: Min. 6 V to max. 18 Volts DC; 1.4 W
    • 90 mA at 18 VDC
    • 120 mA at 12 VDC
    • 195 mA at 7.2 VDC
    • 210 mA at 6 VDC
  • Runtime with SRBATTSLED Adapter: 7.2V, 2200mA “L” style battery will typically provide about 11 hours of operation
  • Transmitter battery level tracking: LCD display with “bottle” icon and timer readout
  • Operating temperature: -4°F to 122°F (-20°C to 50°C)
  • Weight: 0.43 lb (195 g) with SRaEXT adapter
  • Dimensions (WxDxH): 2.7” x 3.5” x 0.7” (68mm x 89mm x 18mm)

What's in the Box

  • Lectrosonics SRB Camera Slot Dual UHF Receiver
  • Adjustment Tool (Part# 35679)
  • 2 x Antennas (Part #AMJXX)
  • Quickstart Guide


Key Highlights

  • Dual Channel UHF Receiver
  • Uni-Slot compatible
  • LCD interface

Microphone Accessories

Audio Accessories:
Audio Receiver
Audio Receiver Type:
2-Channel - Dual conversion, superheterodyne
Audio Receiver:


Channel Separation:
Frequency Range:
25.5 MHz in 100kHz steps


11 in
11 in
15 in
1.01 lb
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