NITEK transmissor ou receptor passivo de dois fios com conectores fêmea FBAS/BNC

Running composite video over long distances with coaxial cable can be costly and inflexible. The NITEK VB37-F passive video transceiver solves this by transmitting FBAS video signals over standard unshielded twisted pair (UTP) cable, such as Cat5e or Cat6, eliminating the need for expensive coax runs. This compact unit works as either a sender or receiver, providing a simple, reliable point-to-point video link for CCTV and surveillance systems.

Who is it for

This transceiver is ideal for security installers, system integrators, and DIY enthusiasts who need to extend composite video signals up to 300 meters in color or 600 meters in black and white. It is perfect for retrofitting existing UTP infrastructure or new installations where pulling coax is impractical. No external power is required, making it a convenient choice for remote camera locations.

Main features

• Passive operation – no power supply needed
• Transmits NTSC, PAL, or SECAM video over Cat5e/6 UTP
• BNC female connector for coaxial input/output
• 2-pin screw terminal for twisted pair connection
• Built-in surge protection and ground loop isolation
• Compact ABS housing, wall-mountable
• Supports color video up to 300 m (1000 ft) and B/W up to 600 m (2000 ft)

Specifications

• Signal type: Composite video (FBAS)
• Video connector: 1x BNC female
• Twisted pair connector: 2-pin screw terminal
• Coaxial impedance: 75 Ohm
• UTP impedance: 100 Ohm
• Frequency response: 0-8 MHz
• Insertion loss: < 2 dB per pair
• CMRR: > 60 dB (20 Hz to 8 MHz)
• Operating temperature: -10°C to 50°C (14°F to 122°F)
• Humidity: 0-95% non-condensing
• Housing material: ABS plastic
• Mounting: Standalone or wall-mountable

Tips

For best results, use solid-core Cat5e or Cat6 UTP cable and avoid running parallel to AC power lines to minimize interference. Pair two VB37-F units for a complete video transmission link – one at the camera end and one at the DVR/monitor end. Ensure proper grounding to take full advantage of the built-in surge protection.