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VB39F - Nitek


The VB37M is a high noise immunity passive UTP Video balun for twisted pair transmission of CCTV video. The VB37M is a “heavy duty’ design with two screw terminals for UTP connection and a female BNC for coax connection. This passive UTP video balun operates with other passive video baluns, transceivers or active receivers.The VB37 series is available in the M model (male BNC) and the F model (female BNC).

Product Description

The VB39F is a passive UTP video balun for twisted pair transmission of CCTV video. The VB39F is a “heavy duty” design with two screw terminals for UTP connection and a female BNC for coax connection. The VB39F has built-in surge suppression for added equipment protection.

The VB39F video balun is a transceiver that provides a low cost means of sending live video over unshielded twisted pair, point-to-point wiring for distances of up to 750 feet (228 meters), with other CCTV balun transceivers, up to 1,500 feet (450 meters) with the TR515 single channel receiver and model 51 series hubs, up to 3,000 feet (900 meters) with the TR560 single channel receiver and 56 series hubs. The VB39F is compatible with all of the up-the-coax control systems.

A basic system uses (2) VB39 units, 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 VB39F is designed to provide superior immunity from noise and interference even when running next to line power. The VB39F also provides a convenient mounting tab for ease of installation. The VB39F is a UTP transceiver that provides another Security Transmission Solution from Nitek.


• Works with any HD/TVI/CVI/AHD or NTSC and PAL
• Quality video over ordinary twisted pair cable
• Immunity to noise and interference
• Passive devices—do not require power
• Video and P/T/Z over a single pair (with “up-the- coax” systems)
• Weather resistant design Easier to install than coax

Tech Specs

 Transceiver Unit
Size 1.3″H x 2.0″W x .95″D
Power Requirements NONE REQUIRED
Input 1 vpp composite video
Monochrome or Color
Output Balanced low voltage current loop
Shipping Weight 1 lbs for single unit
8 lbs for a 44 unit Box
 System (2 Transceivers Required)
Video Format RS170, NTSC, PAL, SECAM,
CCIR (Color or B/W)
Video Input 1 vpp composite video
monochrome or color
Operating Frequency DC to 10 MHz
Common Mode
>60 dB typ.
Temperature Range -40 degrees C to +85 degrees C
Humidity Range 0 to 98%, non-condensing
Transient Immunity 400A 1.2uS x 50 uS
per ANSI / IEE 587 C62.41 B3400A 8uS x 20 uS


when ground screw terminal is

connected to earth-ground

Enclosure Material Black ABS flame retardant
Twisted Pair Connection Screw terminals
Wire Spec 26 to 12 AWG Unshielded
Twisted Pair (UTP)
DC Loop Resistance 51 Ohms/1,000 feet (max)
(51 Ohms/304 meters)
Normal Capacitance 17pF/ft.
Impedence 100 Ohms +/- 20%
UTP Category 2 or better


VB39F Specification Sheet Last Updated: September 14, 2017
VB39F Installation Manual Last Updated: September 14, 2017
VB39F A&E Specification Last Updated: September 14, 2017