We will be closed for Rosh Hashanah on TUE & WED. Online orders placed Mon 9/22 after 4PM EST - Wed 9/24 will ship Thu 9/25.

Lectrosonics IFBR1B-941 UHF Multi-Frequency Belt-Pack IFB Receiver without Charger, 941.525 - 959.825MHz

SKU: LEIFBR1B941

This item is no longer available.

Overview
Compare
Specs
Protection
Q&A

Questions & Answers

Reviews about this item

Review Summary

Select a plan in the Add Protection section above and purchase with this product by clicking “Add to Cart”.

image-protection

TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen where life happens. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failure, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

Malfunction Protection

Malfunction Protection

When regular use of your product over time results in mechanical or electrical failure.

Zero Deductible

Zero Deductible

We will never charge you a deductible after the purchase of a plan.

Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for purchase Internationally or in U.S. Territories.

Lectrosonics IFBR1B Specifications

  • Operating Frequencies

    Band 941: 941.525-951.975
    952.875-956.225
    956.475-959.825 MHz

  • Frequency Selection Steps

    25 kHz or 100 kHz, selectable; VHF: 125 kHz

  • Sensitivity

    1 uv (20 dB SINAD)

  • Signal/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

    Greater than 70 dB

  • Operating temperature range

    -4 degree to 113 degree F (-20 to 45 degrees C)

  • Third order intercept

    0 dBm

  • Frequency response

    100 Hz to 10 kHz, (+/-1 dB)

  • Audio output

    1V RMS into 50 ohms minimum

  • Antenna

    Headphone cable

  • Min. headphone impedance

    16.0 Ohms

  • Programmable memory

    10 frequencies can be 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

    Multi-color LED indicator for power on and battery status

  • Battery

    LB-50 Li-ion 3.6 V 1000 mAh

  • Battery Life

    8 hours per charge with LB-50 Li-ion battery

  • Current consumption

    120 mA

  • Dimensions

    2.8 x 2.4 x 0.8" (71.1 x 70.0 x 20.3mm)

  • Weight

    3.4 oz (96.39g) (with battery and wire belt clip)

About Lectrosonics IFBR1B

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. In spite of its tiny size, the new IFBR1B receiver offers excellent performance on par with all of Lectrosonics' IFB products.

The design uses +/-20 kHz FM deviation for efficient use of the bandwidth, with compandor noise reduction circuitry for an excellent signal to noise ratio. A supersonic Pilot Tone signal controls the audio output squelch to keep the receiver silent when no transmitter signal is received. The incoming RF signal is filtered and amplified, then mixed down to the IF frequency with a microprocessor controlled synthesizer.

If a monaural earpiece is connected, this condition is automatically accommodated, with no loss of audio output power or battery life. Full output power is available with either type of connector, without the power losses that result from a resistive circuit design. The headphone cable doubles as the receiving antenna. The receiver will drive a wide variety of earbuds, headphones and induction neck loops at substantial levels, with loads from 16 Ohms to 600 Ohms.

An attached sliding door makes battery installation easy. The USB port is located in the battery compartment. The receiver operates on a single 3.6 V rechargeable LB50 Li-ion battery that will provide about eight hours of operation per charge. The LED indicator changes color from green to red as the battery voltage declines to provide plenty of warning before operation ceases. Inside the battery door is a USB port for firmware updates in the field. The IFBR1B is housed in a rugged machined aluminum package. A wire beltclip is included and provides a secure mounting on a wide variety of belts, pockets and fabrics.

Lectrosonics IFBR1B Features

  • 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

Warranty Information

This product has a limited warranty of 12 months.

Product Documents

User Manual

Key Features

  • 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

What's in the box:

  • IFBR1B-941 UHF Multi-Frequency Belt-Pack IFB Receiver without Charger
  • 3.7 Volt Lithium Ion Battery LB-50
  • Wire Belt Clip
  • Self-Securing Closure Strain Relief
  • User Manual
  • Lectrosonics 1 Year Limited Warranty