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Lectrosonics IFB Receiver

The Lectrosonics IFB system virtually guarantees an interference-free means of directing on-camera talent. The transmitter can transmit in 256 different UHF frequencies separated by 100kHz steps ensuring there is no interference with other wireless devices – a common problem with other devices, especially in studio or live event situations. Fed by either a signal from an intercom system or by a direct mic, the transmitter has a range of over 1/4 mile and its noise reduction features plus high-end processing provides a very high quality audio feed to the talent.

Other features include automatic squelching of jarring audio tones; rugged, compact construction; wireless earbud, and long life battery consumption.

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  • Preset frequency can be set without power or transmitter signal
  • Scan mode stores up to five additional frequencies
  • Multi-color LED and rotary control for programming and operation
  • High sensitivity for extended operating range indoors or outdoors
  • Rugged machined aluminum housing
  • Attached battery door
  • 8 hours battery life (alkaline)
  • 20 hours battery life (lithium)
  • 256 frequencies in 100 kHz increments
  • Microprocessor controlled
  • Pilot tone squelch
  • Compandor noise reduction

Frequency control: Sensitivity: Signal/Noise ratio: Squelch quieting: AM rejection: Modulation acceptance: Spurious rejection: Third order intercept: Frequency response: Pilot tone:
Audio output: Antenna: Min. headphone impedance: Programmable memory:
Front panel controls: Indicators:

Battery Requirements:
Power consumption: Weight: Size:
Crystal Controlled PLL 1 uv (20 dB SINAD) 95 dB A-weighted 90 dB
50 dB, 10 uV to 100 mV ±20 kHz Greater than 70 dB 0 dBm
100 Hz to 10 kHz, (±1db)
29.997 kHz, 2 kHz deviation (fixed crystal controlled)
1V RMS into 50 Ohms minimum

Headphone Cable
25.6 Ohms
Switches set default frequency; up to five additional frequencies can be stored in memory
Single knob controls Audio Output Level, Power On, Programming and Scan Frequency Selection
Multi-color LED indicator for power on and battery status. Blinks to indicate channel number and during scanning.
9V alkaline battery lasts about 8 hours 9V lithium battery lasts about 20 hours
60 mA 7.3 oz with battery 3.6 x 2.4 x 0.8 inches (housing only)

Lectrosonics IFB Receiver