- Stores up to 10 frequency presets in memory
- LCD interface for programming and operation
- High sensitivity for extended operating range indoors or outdoors
- USB port for firmware updates
- Compact, rugged machined aluminum housing
- Attached battery door
- 8+ hours battery life with removable LB-50 Li-ion
- Dock chargeable with optional CHSIFBR1B
Wireless IFB (interruptible fold back) systems are used for talent cueing and crew communications in broadcast and motion picture production. In other cases, the IFB system is used by directors and other management to monitor program audio during a production. The IFBR1B receiver provides simplicity and flexibility in a package that is intuitive for untrained users to operate. Despite its tiny size, the new IFBR1B receiver offers excellent performance on par with all of Lectrosonics’ IFB products.
The IFBR1B is housed in a rugged aluminum package. A wire beltclip is included and provides a secure mounting on a wide variety of belts, pockets and fabrics. An optional “clamp style” spring-loaded belt clip is also available: the IFBR1BBCSL. The IFBR1B is powered for over 8 hours by a removeable, rechargeable LB-50 lithium ion battery. NOTE: The IFBR1B does not ship standard with the single battery charger. To order this unit with a charger, order as a kit: IFBR1B-WITH-CHARGER. The IFBR1B can be dock charged without removing the battery with the optional CHSIFBR1B.
Included Accessories
- 1 – 3.7 Volt Lithium Ion Battery LB-50 (Part # 40106-1)
- 1 – Wire belt clip (Part # 27528)
- 1 – Velcro Strain Relief (Part #VSR1)
- 1 – Manual
Accessories
Below is a link to the current firmware update file for the IFBR1b and IFBR1b-941 receivers. This is a zip file, after downloading extract it into a temporary folder. Use the Wireless Designer™ program to update firmware. Instructions are found here.
Note: This is a link to the Wireless Designer firmware update file, which bundles the latest firmware for multiple products. Wireless Designer will automatically choose the right firmware images from the file.
| Title | File Size | File Type | Date | Filename | Link |
|---|---|---|---|---|---|
| Firmware for Units Updated with Wireless Designer | 34 MB | zip | June 25, 2026 | wd_v10Jun2026.zip |
IFBR1B & IFBR1B-941 Firmware History
This model is not capable of firmware updates in the field so no files are available for download. Contact Lectrosonics if you need a firmware update.
WD Firmware Update v15Mar2023
IFBR1b, IFBR1b-941 v1.10
- There are now two ways to lock the settings:
- Preset Lock: Lock from the presets page. Preset navigation allowed, and the FREQ button “peeks” at frequency without altering it.
- Hard Lock: Lock from the frequency page. The receiver cannot be tuned, and the PRESET button “peeks” at preset information without altering it.
WD Firmware Update v07Dec2022
IFBR1b, IFBR1b-941 v1.09
- When settings are “locked”, user may no longer navigate among the preset slots in the Preset page.
- Prevent appearance of erroneous “LoBat” screen on power up when battery state of charge is not “low”.
WD Firmware Update v20Jul2022
IFBR1b, IFBR1b-941 v1.08
- Reduce level of click or pop sometimes heard when switching from one preset to another.
WD Firmware Update v15Jun2022
IFBR1b, IFBR1b-941 v1.07
- Add non-volatile pilot tone squelch bypass setting, including new settings menu page titled “Pb”. The default setting is “Off”. If set to “On”, the “LINK” LED illuminates when the unit is unmuted.
- Improved RSSI squelch algorithm to reduce loud audio bursts when squelching at the edge of the operating range.
WD Firmware Update v29May2020
IFBR1b, IFBR1b-941 v1.06
- First public release in Wireless Designer update file.
IFBR1B-VHF Firmware History
This model is not capable of firmware updates in the field so no files are available for download. Contact Lectrosonics if you need a firmware update.
WD Firmware Update v26Nov2024
IFBR1b-VHF v1.07
- Changes to enhance the manufacturing process at the factory. No new features.
WD Firmware Update v15Mar2023
IFBR1b-VHF v1.06
- There are now two ways to lock the settings:
- Preset Lock: Lock from the presets page. Preset navigation allowed, and the FREQ button “peeks” at frequency without altering it.
- Hard Lock: Lock from the frequency page. The receiver cannot be tuned, and the PRESET button “peeks” at preset information without altering it.
WD Firmware Update v07Dec2022
IFBR1b-VHF v1.05
- When settings are “locked”, user may no longer navigate among the preset slots in the Preset page.
- Prevent appearance of erroneous “LoBat” screen on power up when battery state of charge is not “low”.
WD Firmware Update v20Jul2022
IFBR1b-VHF v1.04
- Reduce level of click or pop sometimes heard when switching from one preset to another.
WD Firmware Update v15Jun2022
IFBR1b-VHF v1.03
- Add non-volatile pilot tone squelch bypass setting, including new settings menu page titled “Pb”. The default setting is “Off”. If set to “On”, the “LINK” LED illuminates when the unit is unmuted.
- Improved RSSI squelch algorithm to reduce loud audio bursts when squelching at the edge of the operating range.
WD Firmware Update v04Sep2020
IFBR1b-VHF v1.02
- First production release.
