WiFi experts report in please.

[WelshBloke]

Hi, I recently followed this guide to make a high gain WIFI antenna and it works pretty well.

What aspects of the antenna influence the gain and frequency?

If I wanted a higher gain would I just add more turns to the coil?

How would I make one that works at 5GHz?

 

[JackMDS]

This thing might work or might Not.

There is No mention or dealing correctly with the real variables that counts in Antenna.

One or two additional Bars means nothing if the Signal to Noise Ratio (SNR), and Standing Wave Ratio (SWR) are larger too.

In principle you can try the same thing for another frequency by adjusting the size.

I.e. since the variable that was used in the video is wave length for Antenna size, 5GHz is twice of 2.4GHz make every thing half the size (larger frequency is smaller wave length).

However without real measure of SNR and SWR, it might be useless.

http://www.ezlan.net/wbars.html

 

[Emulex]

i got a 14dbi directional horn for like $11 at microcenter on sale. hawkin - which is big POS. did the job well. google free antennas org - they have some neato 12dbi directionals for near $0 that do not require anything but paper and tinfoil.

omni's are okay but remember they fire like a mushroom down and out. which is why u want to keep an omni high high up in the air.

directionals just do what they say - narrow angle but precise pointing.

I've seen folks drop a hacked linksys to 1mbps and run 70+ miles with a home-grown directional antenna reliably.

some of the newer laptop's wifi cards have features for diagnosing signal that equal fluke meters that cost $5000. amazing.

 

[WelshBloke]

i got a 14dbi directional horn for like $11 at microcenter on sale. hawkin - which is big POS. did the job well. google free antennas org - they have some neato 12dbi directionals for near $0 that do not require anything but paper and tinfoil.

omni's are okay but remember they fire like a mushroom down and out. which is why u want to keep an omni high high up in the air.

directionals just do what they say - narrow angle but precise pointing.

I've seen folks drop a hacked linksys to 1mbps and run 70+ miles with a home-grown directional antenna reliably.

some of the newer laptop's wifi cards have features for diagnosing signal that equal fluke meters that cost $5000. amazing.

I am so having a go at that when I get a few moments.

Cheers