Lectrosonics introduces IFBT2.0 Interruptible FoldBack transmitter base station

Lectrosonics has unveiled a new Interruptible FoldBack (IFB) transmitter base station - the IFB2.0.

The model is in a half-rack chassis and features two independent transmitters, equaling the rack density of the older T4 unit. The IFBT2.0 has menu-selectable input connectivity, including analogue line and mic-level, Dante and AES digital, Clear-Com and RTS.

These inputs are compatible with ‘wet’ signals, allowing them to be used with connections where DC is present on the audio lines. The new unit also includes USB-C and Ethernet connections, which can be used with Wireless Designer software for system monitoring, frequency coordination, and setup.

The new unit offers IFB, NU Hybrid and EU Hybrid compatibility modes, allowing it to be used in IFB and other applications, including point-to-point audio. The IFBT2.0 is also compatible with the existing line of IFBR1B, IFBR1C (IFBlue), legacy IFBR1 and IFBR1A receivers, as well as all Digital Hybrid Wireless and current digital Lectrosonics receivers. 

Three tuning ranges are available for the IFBT2.0: A1 (470-537 MHz), B1 (537-614 MHz) and C1 (614-692 MHz). These versions match the currently available IFBR1B and IFBR1C (IFBlue) receiver packs and together cover the available UHF TV frequencies for most regions.

The IFBT2.0 offers user-selectable RF power settings at 10, 25, 50, 100 and 250 mW for North American versions, and 10, 25 and 50 for EU versions. A circulator/isolator is employed on each channel, which allows RF signals to pass through the antennas while blocking external signals from entering the transmitter output sections. This reduces the generation of intermodulation products.

Future updates on the IFBT2.0 can be installed in the field via the USB-C jack on the front panel of the unit. The unit comes standard with rack-mounting hardware and can be co-racked with Lectrosonics M2T or DSQD units, or racked with the optional RMPRM2T-1 kit. The front panel features a colour LCD for menu navigation and monitoring, as well as tactile buttons for ease of use and longevity.

“The Lectrosonics IFBT4 was a legendary standard in IFB systems for two decades due to the power, simplicity and robustness that these devices provided,” said Karl Winkler, EVP of product design and distribution at Lectrosonics. “Based on customer requests for a modern unit with digital audio connectivity, along with control and monitoring with Wireless Designer, we developed the IFBT2.0 for a wide variety of applications, starting with broadcast IFB. This unit has the same rack density as the original, but is much easier to use, with a modern interface and more options for audio inputs.”

The new IFBT2.0 base station will be exhibited at the NAB show in Las Vegas, Nevada, from 19-22 April, 2026, at booth #C5307 in the Central Hall.