Video BalUns Audio Transformer composite video Network Cable Cat-5 Cat-5e Cat-6 LAN
Balun Choke/Transformer for transmission of Audio & Video signals YUV (YCbCr / YPbPr) VGA (RGBHV) RGB (RGBS) S-Video (Y/C) up to 600 metres using UTP CAT-5 / CAT-6 LAN or TP Telephone Cable.

BalUns for transmission of common composite Video or Audio over a single twisted pair in a Network Cable. 4 individual signals can be carried over a single, flexible, easily-installed, low cost 4 pair UTP Cat-5, Cat-5e, Cat-6 LAN or Telephone Cable.

These passive devices are suitable for transmission up to ~600 Metres using high quality UTP LAN Cable, we recommend testing to assess results with 120 ohm impedance UTP Telephone Cable. Amplifiers can be used for VIDEO at Transmitting &/or Receiving ends to compensate for high-frequency-attenuation (image detail, colour) & other losses.

BalUn-100/75 $8 Taiwan Quality

CCTV Security Camera Video Balun
BULK BUY Price click on TRUCK for more information $5.50 Bulk-Buy carton of 224. $5 448 +. Price is negotiable for larger quantities

Video BalUn with High Efficiency RM Core.

For transmission of 75 ohm unbalanced Video Signals (Composite, S-Video Y/C, YUV YCbCr/YPbPr, VGA RGBHV, RGB RGBS) over balanced 100/120 ohm Twisted Pair LAN Cat-5/6 UTP Cable.

Designed primarily for use in Cameras, Switchers, Monitors, Capture Cards, Multiplexers, Quads, VCRs, Digital Video Recorders, compact/covert cameras, etc.

BalUn-100/75RoHS is designed for PCB mounting, is similar to and compatible with device used in our Video BalUns.

This BalUn has many desirable qualities due to a combination of low winding resistance and Core size/material/characteristics. It presents a high impedance to common-mode signals while passing differential-mode signals with minimal loss.

Bandwidth: approximately DC ~ 8 MHz. Lead-Free RoHS Compliant (11/07>).

Core with Windings, 2 x Core halves & Clips, ~ 20 ~ 17 ~ 16 mm, ~ 8 grams.

BalUn-Audio $8 Taiwan Quality

CCTV Security Camera Audio Balun
BULK BUY Price click on TRUCK for more information $5 Bulk-Buy 480 + * price negotiable for larger quantities

Audio BalUn/Transformer

For transmission of unbalanced Line-Level Audio Signals over balanced 100/120 ohm Twisted Pair LAN Cat-5/6 UTP Cable.

Designed primarily for use in AV Cameras, AV Switchers, AV Monitors, AV Capture Cards, VCRs, Digital AV Recorders, compact/covert microphones, etc.

BalUn-Audio is designed for PCB mounting it is similar to and compatible with device used in BalUn-AV & BalUn-SAV.

Bandwidth: approximately 20 Hz ~ 20 kHz.

Five ~ 4 mm pins, ~ 19 ~ 15 ~ 17 mm, ~ 15 grams.

Connect unbalanced Audio from 'Shielded Cable' across ~ 65 Ω winding (2 pin side), connect 'UTP' across ~ 50 Ω winding (3 pin side), center pin not used.

New version has ~ 4 mm 'Wire Length' & '5 pins'.

Results may vary depending on Source level (Camera, Preamplifier, etc), sensitivity of Input device (DVR, Monitor, Amplifier, etc), interconnections &
Cable characteristics.

 BalUn-100/75 Video BalUn
how cctv Security balun works

(UTP) Balanced: signal (1) ground (3)
(Coax) Unbalanced: signal (6) ground (4)


& more

** Coax & UTP can be soldered to pins, insulated & secured with Heatshrink tubing.
Video Balun Twisted Pair Video Balun Twisted Pair Baluns Baluns CCTV CCTV Security Balun
Power via Twisted PairPower via Twisted Pair


Passive Baluns are used in Pairs one at each end of Twisted Pair NO POWER REQUIRED

Power via Twisted Pair CCTV Video  Balun

Suitable for interconnecting Cameras / Switchers / Quads / Multiplexers / Monitors / Digital Video Recorders / PC based DVRs / VGA RGB YUV RGBHV S-Video Y/C YCbCr YPbPr Audio Signals / etc / etc.

Use Flexible - Low-Cost - Small-Diameter Category-5 or Category-6 100 ohm impedance Unshielded Twisted-Pair (UTP) Local-Area-Network (LAN) cable or common TP 120 ohm Telephone cable to transmit unbalanced 75 ohm Composite Video signals:

Up to 600 metres (monochrome) and up to 300 metres (colour) using Passive Baluns with high quality unshielded Cat-5/6 LAN cable.

Up to 2 400 metres (monochrome) and up to 1 500 metres (colour) using Active Amplifiers with high quality unshielded Cat-5/6 LAN cable.

Baluns or Active Amplifiers may save hundreds of dollars on coax cable and labour and ensure that you get-the-job! Use in Residential Units, Universities, Offices, Hospitals, Showrooms, Elevators, for Covert Surveillance. Utilise unused spare pairs that may be available in existing LAN or Telephone wiring.

Different devices may be used at each end of Twisted Pair.

An Active Amplified Transmitter or Receiver may be used with a passive device to extend the transmission distance.

Single-Cable-Solution 600 + metres use spare pair(s) for Power SupplyIn-Line Regulator-Rectifier Input: 14~24 vac or 18~30 DC via Screw-Terminal Block. Output 12 VDC Regulated (maximum 300 mA when input is less than 20 volts, 200 mA when input is greater than 20 volts) via 2.1 mm x 5.5 mm Center = + DC Plug. Ideal for long power cable runs where voltage drop due to cable resistance is a problem. for In-Line Rectifier/Regulator.

Technical Information: Ask for our 'Balun Link List' a very useful resource for general Balun information, e-mail your request with your Balun purchase Invoice Number.

PC DVRs & other Digital Video Recording systems: We recommend use of high quality Cat-5/6 cable, if runs exceed 250 ~ 300 metres use TWIST-AMP for better results.

To ensure best possible image contrast and brightness in Low-Light conditions we recommended High-Quality Low-Loss Coaxial Cable and AV-Amp or Vid-Amp/4 for long runs, acceptable results may be possible with unshielded Cat-5/6 Cable and TWIST-AMP.

Twisted Pairs may be paralleled to extend the transmission distance of Video Signals however any gain will be a trade-off as paralleled pairs lower immunity to common-mode interference and increase attenuation of high frequency signals.

In-Line Regulator-Rectifiers
Input: AC or DC Output: 12 VDC Regulated. Ideal for long power cable runs where voltage drop due to cable resistance is a problem.

RegulatorRectifierRegulator-RectifierIn-Line Regulator-Rectifier

REG-12VDC * REG-12VDC+ * Rect-Reg * Rect-Reg+

Regulator-Rectifier 24 vac 12 VDC Regulated
Cable resistance, Cable length and Current drawn by Camera affect voltage drop which can be reduced by using thicker gauge wire and/or paralleling pairs. A test using 24 AWG Cat-5  Cable, a 24 vac Power Supply, REG-12VDC In-Line Rectifier-Regulator and a Camera that draws 100 milliamps demonstrated that lengths of 600 + metres is practical, 2 pairs in parallel would increase this to 1 200 + metres.

A single 24 AWG (0.5 mm diameter) conductor has a resistance of ~ 9.4 ohms per 100 metres, voltage drop will be ~ 1 volt per 50 metres of Cat-5 Twisted Pair when powering a Camera that draws 100 milliamps. (calculation: 9.4 ohms x 0.1 amps = 0.94 Volts)