Product Description

Two-channel slot-mount Digital Hybrid Wireless® diversity receivers. The SR receiver offers two independent channels and fits into the standard video camera slots found on professional cameras. The two audio channels can feed separate inputs or can be mixed internally to feed a single input.

NOTE: Not all cameras have two audio channels enabled in the slot.

The SRb5P variant is equipped with an external audio output for cameras that only have one audio input in the slot. Both audio channels can be connected with external cable (MCSR/SPXLR2).

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Additional Information

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:

Ch.1: 248.450 MHz and 350.000 kHz
Ch. 2: 243.950 MHz and 250.000 kHz

Frequency Stability:

±0.001 %

Front end bandwidth:

26 MHz @ -3 dB

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:

Front panel TA5M with two balanced outputs

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
• M.3 non-Lectrosonics (call factory)
• 200 Lectrosonics 200 Series
• 100 Lectrosonics 100 Series
• HYB/TB Digital Hybrid w/ Talkback
• M.7 non-Lectrosonics (call factory)
• M.6 non-Lectrosonics (call factory)
• IFB Lectrosonics IFB

SmartNR (noise reduction):

OFF, NORMAL, FULL modes (available in Digital Hybrid mode only)

Frequency Response:

32 Hz to 20 kHz (+/- 1dB)


0.3% (system) typical in Digital Hybrid mode

Signal-to-Noise Ratio (dB):

95 dB or better (overall system, Digital Hybrid 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:

-20° C to +50°C


195 grams (7 ozs.) with SRaEXT adapter


2.68” wide x .72” high x 3.52” deep
(68 mm x 18 mm x 89 mm)

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