Understanding the Basics of Wireless Video Transmission
Video transmission demands a precise setup because it is more sensitive compared to audio transmission for long-distance communication. Achieving long-range video transmission depends on establishing a clear line of sight (LOS) between antennas.
Importance of True Line of Sight
True line of sight involves more than visual contact between the transmitting and receiving antennas. Optimal performance depends on precise antenna placement. Antenna signal radiation diverges into a cone pattern rather than just traveling directly between points. Signals radiate differently since some travel upwards while others reflect off surfaces or barriers. Signal variations result in some parts arriving out of phase with the direct signal which creates interference that degrades video quality.
A clear signal pathway is essential for long-range wireless video transmission which requires mounting antennas 15-20 feet above any obstructions.
Antenna Placement and Obstructions
Even if there are no obstructions other than the ground, aim to place the antenna as high as possible to maximize distance. Surprisingly, the ground counts as an obstacle! Ensure the antenna is elevated to avoid signal interference.
When installing your system in winter, consider any trees between the transmitter and receiver. What works perfectly in winter may fail in summer when trees grow leaves. Moisture-laden leaves are excellent at blocking signals.
Also, account for moving items as potential interference sources. For example, a truck passing through the signal path can disrupt video transmission. Raising the antenna to maintain a clear line of sight can solve this issue.
Long-Range Wireless Video Installation Instructions
This long-range wireless video camera system uses "access points," with one set to transmit and the other to receive. The receiving side connects to the internet through your building's network router or an Ethernet switch. The access point requires 24 volts DC and includes a Power over Ethernet (PoE) injector to provide power through a CAT 5 or higher cable. Plug the PoE injector into a 110VAC outlet.
Here is an example of some wireless bridge equipment: wireless bridge kit
On the camera side, an access point is set to transmit mode. It also includes a 24 volts DC PoE injector as its power source. The camera requires an 802.3af compatible PoE injector that auto-detects the correct voltage. As this side is usually outdoors, use a waterproof electrical junction box with a 110VAC outlet to house both PoE devices.
A short CAT 5 cable (included) connects the two PoE devices. Longer CAT 5 cables are available for purchase; you'll need one for the camera and one for the access point. Measure the cable length required for optimal positioning of both devices.
Monitoring Capabilities
After uploading your video to your network system you can watch it with common devices like desktop computers, laptops, tablets, or smartphones. PC users can access free software while tablet and smartphone users can download low-cost apps to monitor their systems conveniently.
If instead of a long-rang video you need both audio and video, check out our video intercom equipment here: Types of video intercoms
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