System Q Ltd Manufacturer and Supplier of CCTV Equipment

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Delivery Details
Delivery Details


Wirefree Bundles Save money with great value VideoMitter and camera bundles.

Videomitter Bundle

Did You Know...?

We have a wide range of antennas so you can get even more from your VideoMitter! From semi-directional antennas to high gain directional parabolic antennas you can achieve up to 1.2km wireless transmission distance!


VideoMitter -

Easily transmit video and audio up to 1.2km without cabling. Ideal for transmitting between buildings over a road or car park.


CCTV Buyer's Guide To Wirefree Transmission

Using wirefree technology to transmit video and audio signals from one point to another is a great “get out of jail” card when cabling is difficult or costly perhaps due to a road or some other obstruction. It isn’t as easy as it sounds though and a variety of factors should be taken into consideration before opting for the wirefree route. Read more here in our handy buyer’s guide…

A B C to go for...


Antennas that work by honing in the transmission signal area. A great addition often resulting in a much clearer CCTV picture.

Boxes made from ABS are great for housing transmitters and receivers outdoors as the plastic is weatherproof and doesn’t deaden the transmission signal.

Clear line of sight between TX and RX for maximum picture quality and to avoid interference from vegetation or passing vehicles for optimum results.

What To Avoid:

  1. Wirefree combined cameras & transmitters they don’t offer the installation flexibility available with two separate parts.
  2. Don't rely totally on wirefree. Try and use cabled runs for key cameras as they aren’t dependent on external factors such as the weather.
  3. Areas where a lot of moisture is in the air such as over streams or ponds as mist and fog deaden the transmission signal. This includes hills and areas of vegetation too as they both hold moisture.
  4. Try to position transmitters & receivers behind foil-backed plasterboard which is common in new builds as metal will deaden the signal. Use connection leads and a set of antennas to overcome this issue.

60 Second Guide:

60 Second guide
  1. Get out your ladders and work out a clear line of sight from A to B so you can determine the ideal spot to position your TX/RX pair.
  2. Calculate the approximate distance to ascertain whether you will need to add antennas to the installation.
  3. Choose the best antenna for the job using our Antenna Guide. See tip 397.
  4. If antennas are not being used look at fitting your TX and RX inside an ABS box on an outside wall to avoid any unwanted source of interference from the fabric of the building itself.
  5. Ensure the camera picture being inputted is good quality and free from interference.
  6. Connect video, audio and power to the units plus antennas if being used and you should be up and running.
  7. If no signal is being transmitted, check the units are paired to each other again.

The Facts:

The Facts

OFCOM are now responsible for the UK’s regulation of frequency usage and have the role of preventing and reducing the risk of interference. In fact, only products operating in set frequency ranges are licence exempt.

Related CCTV Tips:

How to fit CCTV

..or search through the How to Fit CCTV Tip database.

Did You Know?

Did you know?

As wirefree transmission technologies are used in the military and by aircrafts, its use is regulated on a worldwide basis by the ITU (International Telecommunication Union) now part of the United Nations.

Jargon Buster:

Jargon Buster

Line of sight – where a transmission signal such as microwave has a direct path between transmitter and receiver and so has a “clear line of sight” as opposed to an obstructed one.

Microwave transmission - the transmission of information/energy using electromagnetic waves (between 1-1000mm) that occupy the middle region of the electromagnetic spectrum.

RF (Radio Frequency) – again uses electromagnetic waves but this time between 3 kHz to 300 GHz. Widely used for broadcasting but also used for control equipment such as keyfob. Lower on the spectrum than microwave

IR (Infra-Red) - Higher on the spectrum than microwave and best known for it’s use in short range line of sight applications such as remote control handsets.

Read the full CCTV Jargon Buster

In The News:

In the News

Ofcom are also in charge of assessing audience complaints made against any broadcast. In just 2 days last month alone this included Celebrity Big Brother (17 complaints on 23/01/17), Eastenders (10 on 23/01/17), Eastenders (20 on 24/01/17), Good Morning Britain (11 on 24/01/17) and Loose Women (15 on 23/01/17).

...and Finally:

And Finally

This guide plus other handy CCTV installation tips can be downloaded FREE from our CCTV Installer's Help Zone.

CCTV Help Zone