Issues with Wireless CCTV.. please help :(

BringTheRain

BringTheRain

BringTheRain

Soldato
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Bedfordshire
Thought i would post in here, as seems to make sense.

I have brought a cheapish cctv wireless 2.4ghz system. Picture quality is really good!!!

I am using the system to be able to check inside guttering, to see if its blocked.

Problem before even installing it, is range and interference.

it has a standard SMA type connector on the receiver. So i could purchase a hi gain Ariel. Would that help As distance seems to be the problem.

At the moment we are losing signal at around 10-20 meters, through like walls etc. With a hi gain Ariel, is it like its fooling the camera into thinking that the receiver is closer, as we are using this Ariel ?

thanks
 
high gain will gain you a small bit of range, but mainly improve signal quality,

also, for it to work best you would need higher gain ant's on your router aswel.

have you conciderd moving the router / adding a bridge/access point closer to the camera?
 
Working in decibels, signal level is equal to the gain of the transmitting antenna plus the gain of the receiving antenna minus the free space path loss. Now, there's only one way to reduce free space path loss - move the transmitting and receiving antennas closer together. The other option to improve the signal strength is to increase the gain of one or more of the antennas.

To try and answer your question, I'll offer an example. At 10m of separation, the free space path loss at 2.4 GHz is roughly 60 dB. Now suppose you increased the gain of one of the antennas by 10 dB. This gives you the equivalent result of changing the separation of the antennas to a distance where there is 50 dB (i.e. 10 dB less) of free space path loss, which is just over three metres. So yes, increasing the gain of one of the antennas is equivalent to moving the antennas closer together.
 
You have several options

Install better antenna to the transmitter (camera) and receiver.
Boost the output power of the transmitter (camera) and install better antenna for the receiver.
You can also use an AV sender like the one in the pix to use as a relay to improve the range.
You can also use a wired camera and just feed it to a high power av sender like the one in the pix.

If you use a big wired camera you can actually fit the circuits of some of the high powered av sender inside it, but it will need a little mod for the antenna.
These units are available in the bay and they are a bit expensive and prolly cost more than your wireless cctv unit.




 
Thanks for the input guys. I have brough a high gain 2.4ghz ariel looks like a tv ariel lol. I have brought some extension cables. A 3m and 9m. But I know using cables with weaken signal :)

Will post back results when I get the parts

Thanks guys
 
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