2.4 Ghz Wireless Surveillance Cameras
Wireless Surveillance Cameras
In today’s world the majority of wireless cameras operate on an unsecured frequency of 900 MHz, 2.4 GHZ or 5.8 GHz. With 80% of the wireless security cameras being used on the market today are using analog signals operating in a frequency range of 2.4 GHz.
Although the security cameras in this group usually fall into the “cheap security” or “toys” much of it is still decent as long as it is used with the proper equipment and not so high expectations.
So What Are the Main Problems of Wireless?
On a 2.4 GHz transmitter, many receivers and transmitters require and operate on fixed signals that do not overlap which reduce interference.
Things to think about and how to avoid problems!
A) There are 4 available non-overlapping frequencies in the analog 2.4 GHz frequency range. This means that you can get 4 video cameras on a wireless system. So when planning out your system and layout, you need to really think about if you need a 5th camera. I would simply take the four (4) cameras and place them in the areas that are of more concern and higher priority. If you need five (5) or more cameras, I would look into the digital wireless cameras which can be more expensive OR do what you can to hardwire your camera system.
B) 2.4 Ghz cameras operate on fixed RF channels. This means you are subject to interference from all kinds of devices that use RF signals. These signals are likely to come from computer monitors, wireless routers, power supplies, cordless phones, wireless local networks, microwaves, local TV stations broadcasts, and many other items that use radio frequencies to transmit. If you have interference, you may try to move your transmitter and receiver away from these devices and see if that works.
C) When dealing with the 2.4 Ghz wireless cameras, you are limited to a distance of about 500ft outdoors with a clear line of site. However, if you add walls, trees, and any other things that would block a radio wave, then your range will greatly be decreased to less than 100ft. If you require high resolution and distance, then you might consider a hybrid system. Using a hybrid system will allow you to hardwire the cameras that are in a distance and use wireless for the cameras that are close to the receiver.
D) 2.4 Ghz is an open frequency and a very popular one at that and transmit openly. If you want complete privacy, I would not recommend this type of wireless camera. These frequencies are common and monitors can be purchased by anyone. So a voyeur or burglar could be driving around and seeing your cameras and seeing what you are doing. If this doesn’t sound like something you would enjoy, I would recommend a hardwired system.
If you transmit wireless frequencies in open air, you lose your privacy.