The Lectrosonics IFBR1B is a compact bodypack IFB receiver featuring a removable, rechargeable battery and a battery charger. The receiver is compatible with IFBT4 transmitters, as long as there is frequency band overlap between the components, creating a wireless IFB (interruptible fold back) system to facilitate talent cueing and crew communications in broadcast and motion picture production.
The receiver will run for up to eight hours on the included rechargable LB-50 lithium-ion battery and the unit s LED will change from green to red to warn you when power is low. This configuration includes a charging unit, allowing you to charge one LB-50 at a time.
The lightweight IFBR1B offers a compact, rugged machined-aluminum chassis with rounded edges making it comfortable to wear and easy to conceal. A simple power/volume knob and intuitve controls with an LCD screen keep operation simple. 10 presets are available, allowing you to store frequencies in memory, even when the battery is removed, for quick setup on set.
The standard 3.5mm output can drive a wide variety of earbuds, headphones, and induction loops— from 16 to 600 ohms— at substantial volumes. Mono earpieces are automatically accommodated with no loss of audio output or battery life. The included wire belt clip makes it easy to secure the receiver to clothing.
Lectrosonics IFBR1B Specs
| Frequency Selection Steps | 125 kHz |
| Frequency Bands | VHF: 174.100 to 215.750 MHz |
| Signal to Noise Ratio | 95 dB (A Weighted) |
| Squelch Quieting | 90 dB |
| AM Rejection | 50 dB, 10 uV to 100 mV |
| Modulation Acceptance | ±20 kHz |
| Spurious Rejection | > 70 dB |
| Third Order Intercept | 0 dBm |
| Frequency Response | 100 Hz to 10 kHz (±1 dB) |
| Audio Output | 1 V RMS into 50 Ohms Minimum |
| Antenna | Headphone Cable |
| Minimum Headphone Impedance | 16 Ohms |
| Programmable Memory | 10 Frequencies Stored as Presets |
| Controls | Top Panel: Single Knob Controls Audio Output Level and Power On Side Panel: Membrane Switches with LCD Interface for Frequency Selection and Preset Function |
| Indicators | Multicolor LED Indicator for Power On and Battery Status |
| Battery | LB-50 Li-Ion (Included) 3.6 V, 1000 mAH |
| Battery Life | 8 Hours per Charge |
| Current Consumption | 120 mA |
| Dimensions | 2.8 x 2.4 x 0.8" / 71.1 x 61 x 20.3 mm |
| Weight | 3.4 oz / 96.4 g (with Battery and Belt Clip) |
Packaging Info
| Package Weight | 1.03 lb |
| Box Dimensions (LxWxH) | 9.8 x 7.8 x 3" |
In the Box
- Lectrosonics IFBR1B Bodypack IFB Receiver with Charger (VHF: 174 to 216 MHz)
- 2-Year Manufacturer Warranty
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