Lectrosonics IFBT4-VHF Frequency-Agile Compact IFB Transmitter

$1,134.00 USD

The Lectrosonics IFBT4-VHF transmitter was designed for use in broadcast, motion picture, theater, and stage applications where extended operating range and high quality audio are essential.

Unavailable for shipping outside of The United States and Canada.

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SKU: LEC.IFBT4VHF Categories: , , , , Tag:

Description

  • Digital Hybrid Wireless® technology*
  • Microprocessor controlled operation
  • 50 mW power output for long range use
  • Pilot tone squelch control
  • Multi-use XLR input jack
  • Built-in microphone preamp
  • DIP switch programmable intercom input
  • Tx mute for frequency scrolling
  • Multi-function LCD display
  • Rugged machined aluminum construction

The Lectrosonics IFBT4-VHF transmitter was designed for use in broadcast, motion picture, theater, and stage applications where extended operating range and high quality audio are essential. The transmitter can be used as a stand-alone device or patched directly into popular intercom systems.

The design is based upon the patented Lectrosonics Digital Hybrid Wireless® system.* While at the time of the first release of the product, there is only a companion analog receiver, the Digital Hybrid Wireless system is included for compatibility with future products.

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Operating Frequencies (MHz): 174.100 to 215.750 MHz
Available Frequencies: 239
Channel Spacing: 175 kHz
RF Power Output: 50 mW
Frequency Stability: ±.001% (10 ppm) @ 25° C
Temperature Stability: ±.001% (10 ppm) from -30° C to +50° C
Channel Selection: Momentary pushbutton switches, tune Up and Down
Compatibility Modes (2) IFB and Digital Hybrid Wireless® (400 Series)
Pilot Tone: 29.997 kHz IFB & 400 MODE; each frequency has a unique pilot tone
Modulation:
  • IFB Mode: FM, ±20 kHz deviation
  • Digital Hybrid Mode: ±75kHz
Audio Frequency Response:
  • IFB Mode: 100 Hz to 8 kHz, ±1 dB
  • Digital Hybrid Mode: 30Hz to 20kHz ±1dB response (see Rolloff)
Rolloff: Low frequency audio rolloff is menu selectable for 3 dB down at 35 Hz or 50 Hz.
Audio Compressor: 2 to 1 (IFB mode)
Output Impedance: 50 ohms
Audio Input Levels:
  • 0 dBu for Line, RTS1 & RTS2
  • -10 dBu for Clear Com
  • -42 dBu for mic dry inputs (no phantom power)
  • +/-50Vdc max
Audio Input Config: Balanced and Unbalanced, rear panel selectable for Line, Mic. RTS 1, RTS 2, and Clear Comm
Audio Input Impedance: Greater than 2 K balanced, greater than 1 K unbalanced at any gain setting
Gain Control Range: -18 dB to +24 dB (0 dB nominal center), Menu selectable
Audio Input Jack: Standard XLR female connector
Input Power: 12 to 14 VDC typical, 200 ma. max.; Max. Input Range 6 to 18 VDC
Power Input Jack: Coax type, locking LZR RL26AE
Indicators: Backlit Liquid Crystal Display. Displays modulation meter, frequencies, modes, roll-off and audio level
Front panel controls:
  • MENU momentary pushbutton switch
  • Power OFF-TUNE-XMIT, 3 position slide switch
  • Select Up momentary pushbutton switch
  • Select down momentary pushbutton switch
Rear panel controls: Input Mode Select, 4 section DIP switch
Weight: 9 ozs.
Size: 5.25” L (including connectors) x 3.25” W x 1.25” H
Emission designator: 180KF3E