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Lectrosonics SMWB Wideband Beltpack Transmitter/Recorder (B1: 537 to 607 MHz)

BH #LESMWBB1 • MFR #SMWB-B1
Lectrosonics SMWB Wideband Beltpack Transmitter/Recorder (B1: 537 to 607 MHz)
Key Features
  • For Broadcast, EFP and ENG Applications
  • Digital Hybrid Wireless Technology
  • Alternate Recording Function
  • 35 Hz to 20 kHz Frequency Range
The Lectrosonics SMWB is a wireless beltpack transmitter that can also act as a recording device, capturing audio onto microSDHC cards. Paired with a lavalier or dynamic microphone, the transmitter is suitable for ENG (Electronic News Gathering), EFP (Electronic Field Productions), interviews for broadcast TV, and more. It provides Digital Hybrid Wireless technology, combining 24-bit digital-audio processing with an analog FM radio link to give you the benefits of both worlds, such as fewer dropouts and audio artifacts while maintaining a robust range of operation. The transmitter is housed in a machined aluminum case, lending the unit a rugged and dependable shell. Its water-resistant control panel adds to its usability.
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Lectrosonics SMWB Overview

The Lectrosonics SMWB is a wireless beltpack transmitter that can also act as a recording device, capturing audio onto microSDHC cards. Paired with a lavalier or dynamic microphone, the transmitter is suitable for ENG (Electronic News Gathering), EFP (Electronic Field Productions), interviews for broadcast TV, and more. It provides Digital Hybrid Wireless technology, combining 24-bit digital-audio processing with an analog FM radio link to give you the benefits of both worlds, such as fewer dropouts and audio artifacts while maintaining a robust range of operation. The transmitter is housed in a machined aluminum case, lending the unit a rugged and dependable shell. Its water-resistant control panel adds to its usability.

Operating in the B1: 537 to 607 MHz band, the transmitter offers selectable outputs to bolster its operating range, specifically among 25, 40, and 100mW. At lower values, the transmitter’s battery life will last longer; at higher values, the operating range is increased, though at the expense of battery life. Lightweight at 2.7 oz, the transmitter boasts settings which make it compatible with dynamic microphones, electret lavaliers, and even line-level sources—so long as they can plug into the TA5M 5-pin input connector.

Input gain adjustment is possible in 1 dB increments for a total range of 44 dB. You’ll also note the low-pass filters, which can be switched to roll off at 30, 50, 70, 120, or 150 Hz to mitigate low-end disturbances. This input section also boasts servo-bias input circuitry proprietary to Lectrosonics, as well as an analog limiter controlled with DSP that, sitting ahead of the mic preamp itself, protects the audio path from overload. With its dual-release envelope, it maintains acoustic transparency, even though it can achieve over 30 dB of gain reduction.

The SMWB utilizes DSP that renders it suitable for use with all Lectrosonics Digital Hybrid receivers, though it is also backward compatible for use with 100 and 200 series transmitters, IFB receivers, and various analog receivers from third-party manufactures. The unit is powered by one AA battery, making use of switching power supplies to offer consistent voltages to its internal circuitry throughout its battery life. One AA battery is included. 

Expanding the SMWB’s functionality is its built-in recording capability, for use when transmission is simply not possible due to the conditions of the environment. The recorder operates at 24-bit/44.1 kHz, recording .WAV files to microSDHC cards. As a transmitter, the SMWB supplies an audio frequency range of 35 Hz to 20 kHz, though during recording, that lower value extends down to 20 Hz. You cannot use the transmitter and the recorder simultaneously, but it’s nice to have the option to select between the two. The transmitter includes a flexible steel-cable antenna.

Note:
Please note: 608.000 to 614.000 MHz are excluded
Key Features at a Glance
  • Selectable output power to maximize battery life or operating range
  • Lightweight, corrosion-resistant housing
  • Water-resistant seals for use in damp environments
  • LCD interface with lockout option
  • Programmable compatibility modes for use with a wide variety of different receivers
  • Servo-Bias input circuitry
  • IR (infrared) port for fast setup
  • Covers three standard frequency blocks
  • Update firmware in the field via MicroSD card reader
  • Can also be used as a recorder on internal microSDHC memory card

Lectrosonics SMWB Specs

Transmitter
Transmitter TypeBodypack
RF Output Power25 / 50 / 100 mW
Audio I/O1 x TA5/Mini XLR 5-Pin Male Input (Lockable)
Included Cable ConnectorNone
Plug-In Power5 V
Audio Input Level0.5 to 50 mV (Mic Level)
17 to 1.7 mV (Line Level)
Auto-Level ControlNo
Recorder Sample RatesWAV:
44.1 kHz (Record)
Recorder Bit Depths24-Bit
Memory Card SupportmicroSDHC
Audio File FormatsRecording:
BWF
Bit Rates144 to 192 kb/s (HD Mono Mode)
288 to 384 kb/s (Split Gain Mode)
Gain Range 44 dB
Signal ProcessingHigh-Pass Filter:
35 Hz
High-Pass Filter:
50 Hz
High-Pass Filter:
70 Hz
High-Pass Filter:
100 Hz
High-Pass Filter:
120 Hz
High-Pass Filter:
150 Hz
Frequency Response35 Hz to 20 kHz
Sync MethodIR
Antenna1 x Flexible Whip, Detachable
Power RequirementsBattery
Battery Type1 x AA (Included)
Approx. Battery Life4.4 Hours (Alkaline)
Display & Indicators1 x Backlit LCD (Audio Level, Battery Status, Channel, High-Pass Filter, RF Output Power)
1 x LED (Audio Level, Peak)
HousingAluminum
Operating Temperature-4 to 122°F / -20 to 50°C
Dimensions2.4 x 2 x 0.6" / 60 x 49.6 x 16.3 mm
Weight3.2 oz / 91 g
Physical
Wireless TechnologyAnalog/Digital Hybrid UHF (900 MHz)
RF Frequency BandB1: 537.6 to 607.95 MHz
Frequency Step Size25 kHz
100 kHz
RF Channel ScanningAuto-Scan
EncryptionNone
ModulationF3E
Packaging Info
Package Weight0.94 lb
Box Dimensions (LxWxH)9.85 x 7.9 x 2.95"

Lectrosonics SMWB Reviews

A great upgrade from the smv

By Reece
Rated 5 out of 5
Date: 2019-10-05

I’ve been a staunch supporter of the sm series for years, and this is a great upgrade from the classic small body unit. The menu functionality is easy and faster than the old one, and the recorder function is awesome for super long or wide shots. Battery life is comparable to the old sm. Can’t wait to add more to my kit!

Battery Life is nowhere near what they promise

By Matt
Rated 2 out of 5
Date: 2019-03-12

If you are shooting 45 minute segments this product is perfect for you! Otherwise youll be changing batteries constantly.

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