Lectrosonics IFBT4 - Frequency-Agile Compact IFB Transmitter (Block 21 / 537-563 MHz)
Availability:
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Description
The LectrosonicsÊIFBT4Ê/ÊIFBT4-VHF transmitters were designed for use in broadcast, motion picture, theater, and stage applications where extended operating range and high-quality audio are essential. The transmitters can be used as a stand-alone devices or patched directly into popular intercom systems.
Wide frequency options provide exceptional flexibility in coordinating frequencies in multi-channel wireless systems and avoiding interference from external RF signal sources and noise. Microprocessor control provides user-friendly operation and eliminates transients at turn-on and turn-off. The transmitter output is muted in the TUNE mode to avoid generating interference in other wireless systems while scrolling up and down to change frequencies.
Features:
- Digital Hybrid Wirelessª technology
- Up to 256 UHF frequencies in 100kHz steps
- Microprocessor controlled operation
- 250 mW power output for long range use (50 mW for export versions andÊIFBT4-VHF)
- 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
- Compact size for use anywhere
- Rugged machined aluminum construction
- (VHF model) Offers 239 Frequencies between 174 and 215 MHz
- Protective leather pouch is included
| Operating Frequencies (MHz) | Block 470: 470.100 - 495.600 Block 19:æ 486.400 - 511.900 Block 20:æ 512.000 - 537.500 Block 21:æ 537.600 - 563.100 Block 22:æ 563.200 - 588.700 Block 23:æ 588.800 - 607.900/614.100 - 614.300 Block 24:æ 614.400 - 639.900 Block 25:æ 640.000 - 665.500 Block 26:æ 665.600 - 691.100 Block 944: 944.100 - 951.900 |
| Frequencies (Channels per block) | 256 |
| Channel Spacing | 100 kHz (0.1 MHz) |
| RF Power Output | 250 mW |
| Spurious / Harmonic Suppression | 37 dBc above 1 GHz |
| Frequency Stability | ±.001% (10 ppm) @ 25Á C |
| Temperature Stability | ±.001% (10 ppm) from -30Á C to +50Á C |
| Channel Selection | Momentary pushbutton switches, TUNE Up and Down |
| Compatibility Modes (6) | Digital Hybrid Wireless(tm) (400 Series), 100 Series, 200 Series, Mode 3, Mode 6, and IFB |
| Pilot Tone | 29.997 kHz IFB / 100 MODE, 32.765kHz 200 MODE, 400 MODE step selected |
| Modulation | FM, ±20 kHz deviation IFB / 100 MODE, ±75kHz 200 / 400 MODE |
| Audio Frequency Response | 100 Hz to 8 kHz, ±1 dB, IFB MODE system response 30Hz to 20kHz ±1dB , 200 / 400 MODE system response |
| Rolloff | Low frequency audio rolloff is Menu selectable for 3 dB down at 35 Hz or 50 Hz. |
| Signal to Noise Ratio | 90 dB typical ("A" weighted) |
| Audio Compressor | 2 to 1 IFB, 100, and 200 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 Configuration | Balanced and Unbalanced, rear panel selectable for Line, Mic. RTS 1, RTS 2, and Clear Com |
| 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, rolloff, audio level, and tuning groups |
| 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 |
The LectrosonicsÊIFBT4Ê/ÊIFBT4-VHF transmitters were designed for use in broadcast, motion picture, theater, and stage applications where extended operating range and high-quality audio are essential. The transmitters can be used as a stand-alone devices or patched directly into popular intercom systems.
Wide frequency options provide exceptional flexibility in coordinating frequencies in multi-channel wireless systems and avoiding interference from external RF signal sources and noise. Microprocessor control provides user-friendly operation and eliminates transients at turn-on and turn-off. The transmitter output is muted in the TUNE mode to avoid generating interference in other wireless systems while scrolling up and down to change frequencies.
Features:
- Digital Hybrid Wirelessª technology
- Up to 256 UHF frequencies in 100kHz steps
- Microprocessor controlled operation
- 250 mW power output for long range use (50 mW for export versions andÊIFBT4-VHF)
- 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
- Compact size for use anywhere
- Rugged machined aluminum construction
- (VHF model) Offers 239 Frequencies between 174 and 215 MHz
- Protective leather pouch is included
| Operating Frequencies (MHz) | Block 470: 470.100 - 495.600 Block 19:æ 486.400 - 511.900 Block 20:æ 512.000 - 537.500 Block 21:æ 537.600 - 563.100 Block 22:æ 563.200 - 588.700 Block 23:æ 588.800 - 607.900/614.100 - 614.300 Block 24:æ 614.400 - 639.900 Block 25:æ 640.000 - 665.500 Block 26:æ 665.600 - 691.100 Block 944: 944.100 - 951.900 |
| Frequencies (Channels per block) | 256 |
| Channel Spacing | 100 kHz (0.1 MHz) |
| RF Power Output | 250 mW |
| Spurious / Harmonic Suppression | 37 dBc above 1 GHz |
| Frequency Stability | ±.001% (10 ppm) @ 25Á C |
| Temperature Stability | ±.001% (10 ppm) from -30Á C to +50Á C |
| Channel Selection | Momentary pushbutton switches, TUNE Up and Down |
| Compatibility Modes (6) | Digital Hybrid Wireless(tm) (400 Series), 100 Series, 200 Series, Mode 3, Mode 6, and IFB |
| Pilot Tone | 29.997 kHz IFB / 100 MODE, 32.765kHz 200 MODE, 400 MODE step selected |
| Modulation | FM, ±20 kHz deviation IFB / 100 MODE, ±75kHz 200 / 400 MODE |
| Audio Frequency Response | 100 Hz to 8 kHz, ±1 dB, IFB MODE system response 30Hz to 20kHz ±1dB , 200 / 400 MODE system response |
| Rolloff | Low frequency audio rolloff is Menu selectable for 3 dB down at 35 Hz or 50 Hz. |
| Signal to Noise Ratio | 90 dB typical ("A" weighted) |
| Audio Compressor | 2 to 1 IFB, 100, and 200 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 Configuration | Balanced and Unbalanced, rear panel selectable for Line, Mic. RTS 1, RTS 2, and Clear Com |
| 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, rolloff, audio level, and tuning groups |
| 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 |
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