By: Nitek
Video Transmission Solutions
Contact us for lowest price (800) 284-2288, (858) 565-1101,, or fax (858) 300-4193
Video Balun for UTP

Video balun with pigtail coax and male BNC for operation with other baluns or active receivers.

The VB31M is a UTP video balun transceiver that serves as a UTP video transmission device converting coaxial signals for twisted pair transmission into UTP signals. The VB31M provides a low cost means of sending live video over UTP point-to-point wiring for distances of up to 750 feet (225 meters). The VB31M video balun transceiver operates with other passive CCTV baluns or active video receivers to provide CCTV transmission. Up to 1,500 feet (450 meters) with the TR515 single channel receiver and model 51 series hubs, and up to 3,000 feet (900 meters) with the TR560 single channel receiver and model 56 series hubs. A basic system uses (2) video balun transceivers, one at each end of a twisted pair of wires. These units are intended for use over existing in-house telephone wiring, Category 5 wiring or other twisted pair cable runs to provide a convenient, cost-effective alternative to coax. The VB31M is designed to provide superior immunity from noise and interference even when running next to line power. The VB31M is a UTP transceiver that provides another Security Transmission Solution from Nitek.

VB31M features include:

  • RJ45 jack connection for twisted pair
  • Quality video over ordinary twisted pair cable
  • Immunity to noise and interference
  • Passive devices - do not require power
  • Mini-coax pigtail for in-camera or dome mounting
  • Weather resistant design
  • Easier to install than coax
  • Compatible with all twisted pair equipped cameras, enclosures and domes

 Transceiver Unit


0.9" (H) x 1.0" (W) x 2.0" (D) (not including coax)

Power Requirements



1 vpp composite video
monochrome or color


Balanced low voltage current loop

Shipping Weight

1 lb for single unit

 System (2 Transceivers Required)

Video Format

CCIR (Color or B/W)

Video Input

1 vpp composite video
monochrome or color

Operating Frequency

DC to 10 MHz

Common Mode Rejection

>60 dB typ.

Temperature Range

-10 degrees C to +85 degrees C

Humidity Range

0 to 98%, non-condensing

Twisted Pair Connection

RJ45 jack

Wire Spec

26 to 12 AWG Unshielded Twisted Pair (UTP)

DC Loop Resistance

51 Ohms/1,000 feet (max) (51 Ohms/300 meters)

Normal Capacitance



100 Ohms +/- 20%

UTP Category

2 or better

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Prices and specifications subject to change without notice.