IFBT4 - Uncategorized Lectrosonics - Free user manual and instructions
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| Product Type | IFB Transmitter (Bodypack) |
| Dimensions | 3.0 x 2.4 x 0.8 in (76 x 61 x 20 mm) |
| Weight | 4.2 oz (119 g) with battery |
| Power Source | Two AA alkaline batteries or external DC 5-9V |
| Frequency Range | 470-614 MHz (UHF) |
| RF Output Power | 100 mW (typical) |
| Audio Input | 3.5 mm TRS balanced line/mic level |
| Audio Frequency Response | 50 Hz - 15 kHz ±1 dB |
| Modulation | FM, ±75 kHz deviation |
| Controls | Power switch, gain control, channel select, audio mute |
| Indicators | Power/Battery LED, Audio level LED |
| Compatibility | Lectrosonics IFB receivers (IFBR1, etc.) |
| Battery Life | Approximately 8 hours with alkaline batteries |
| Operating Temperature | -10°C to 50°C (14°F to 122°F) |
| Construction | Machined aluminum with black anodized finish |
| Accessories Included | Antenna, belt clip, AA batteries (2) |
| Mounting Options | Belt clip, optional shoe mount |
| Compliance | FCC, CE, RoHS |
| Warranty | 2 years limited |
Frequently Asked Questions - IFBT4 Lectrosonics
How do I change the frequency on the IFBT4?
Press and hold the channel select button until the display blinks, then use the gain control knob to scroll to the desired frequency. Press the button again to confirm.
What type of batteries does the IFBT4 use?
It uses two AA alkaline batteries. Rechargeable NiMH batteries can also be used but will reduce operating time slightly due to lower voltage.
How do I pair the IFBT4 with a receiver?
Set both the transmitter and receiver to the same frequency and ensure the receiver is set to the correct modulation mode. The IFBT4 uses a standard FM modulation.
What is the range of the IFBT4?
Typical range is up to 300 feet (90 meters) line-of-sight. Range may be reduced in areas with obstacles or RF interference.
Can I use an external microphone with the IFBT4?
Yes, the 3.5mm input accepts balanced line or mic level signals. You can use a lavalier microphone or headset with the appropriate cable.
How do I adjust the audio gain?
Use the gain control knob on the top panel. Turn it clockwise to increase gain and counterclockwise to decrease. The audio level LED indicates optimum level when it flashes green.
What does the LED indicator mean?
A steady green LED indicates the unit is powered with good battery. Flashing red or amber indicates low battery or audio clipping. Refer to the manual for detailed LED patterns.
How do I clean and maintain the IFBT4?
Use a soft, dry cloth to wipe the exterior. Do not use solvents or abrasive cleaners. Remove batteries when not in use for extended periods to prevent leakage.
What safety precautions should I follow?
Do not expose the unit to moisture or extreme temperatures. Use only specified batteries. Dispose of batteries properly. Do not attempt to open the case yourself; return to qualified service personnel.
Where can I find spare parts or repair service?
Contact Lectrosonics customer support or an authorized service center. Common spares like antennas and battery doors can be ordered through the website or dealer.
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