Lectrosonics IFBT4-VHF Frequency-Agile Compact IFB Transmitter
- Frequency-agile IFB transmitter for the VHF band
- XLR input for line, mic, RTS, or Clear-Com
- 50 mW, Digital Hybrid Wireless, 6 to 18 VDC
Unavailable for shipping outside the United States and Canada.
$1,499.00 USD
In Stock
Lectrosonics IFBT4-VHF Frequency-Agile Compact IFB Transmitter
A frequency-agile compact IFB transmitter, the Lectrosonics IFBT4-VHF sends cue and program audio to VHF belt-pack receivers on 239 frequencies from 174.100 to 215.750 MHz.
IFB stands for interruptible foldback, the system that feeds talent and crew their cues on broadcast, film, theater, and stage productions. DIP switches on the rear panel set the input for RTS or Clear-Com intercom lines, a dynamic mic, or studio line level, so the transmitter can stand alone or patch straight into an intercom system.
Digital Hybrid Wireless
Digital Hybrid Wireless encodes the audio digitally and sends it over an analog FM link, which gives the range of FM without a compandor and its artifacts. A supersonic pilot tone keeps the receiver muted when the transmitter is off. The transmitter works in Nu Hybrid mode or in IFB mode, at 50 mW.
Build and Power
Microprocessor control keeps turn-on and turn-off free of pops. The output mutes in Tune mode, so scrolling to a new frequency never interferes with other wireless channels. The backlit LCD reads in dim light and in direct sun. The machined aluminum housing runs on 6 to 18 VDC through a locking connector, and the whip antenna locks onto a 50 ohm BNC jack.
Features
- 239 VHF frequencies from 174.100 to 215.750 MHz
- 50 mW output for long range
- Digital Hybrid Wireless with Nu Hybrid and IFB modes
- Pilot tone squelch control
- XLR input for line, mic, RTS, or Clear-Com
- Built-in microphone preamp
- Transmitter mutes while you scroll frequencies
- Backlit multi-function LCD
- Machined aluminum housing, 6 to 18 VDC
What's Included
- CCMINI pouch
- 21586 locking power cable with pigtail
- DCR12/A5U power supply
- Transmitter whip antenna
- Manual
Specifications
| Transmitter | |
|---|---|
| Operating Frequencies | 174.100 to 215.750 MHz |
| Available Frequencies | 239 |
| Channel Spacing | 175 kHz |
| RF Power Output | 50 mW |
| Pilot Tone | 25 to 32 kHz, 3.5 kHz deviation (Nu Hybrid mode) |
| Frequency Stability | ±0.001% (10 ppm) at 25 °C |
| Compatibility Modes | IFB and Nu Hybrid |
| Emission Designator | 54K5F3E |
| Audio Input | |
| Input Levels | Line, RTS1, and RTS2: 0 dBu Clear-Com: −10 dBu Dynamic mic: −42 dBu (no phantom power) ±50 VDC maximum |
| Input Configuration | Balanced or unbalanced; rear-panel selectable for line, mic, RTS1, RTS2, and Clear-Com |
| Input Impedance | Over 2 k ohms balanced, over 1 k ohms unbalanced |
| Gain Control Range | −18 to +24 dB, menu selectable |
| Frequency Response | IFB mode: 100 Hz to 8 kHz, ±1 dB Nu Hybrid mode: 30 Hz to 20 kHz, ±1 dB |
| Low-Frequency Roll-Off | Menu selectable, 3 dB down at 35 or 50 Hz |
| Audio Input Jack | XLR female |
| Power and Physical | |
| Input Power | 12 to 14 VDC typical, 200 mA maximum; 6 to 18 VDC range |
| Power Input Jack | Coaxial, locking LZR (RL26AE) |
| Antenna Connector | 50 ohm BNC |
| Front Panel Controls | Menu button; Off, Tune, and Xmit slide switch; Select up and down buttons |
| Rear Panel Controls | 4-section DIP switch for input mode |
| Weight | 272 g (9.6 oz) |
| Dimensions (L × W × H) | 133.35 × 82.55 × 31.75 mm, including connectors 5.25 × 3.25 × 1.25 in |
| Latest Specifications | Specifications are subject to change without prior notice. For current information, visit lectrosonics.com. |
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