estqwerty’s wifi antennas

Collinear top section calculations from : mitglied.lycos.de/kleineronkelz/

Calculated dimensions are for DECT frequencies /1880 to 1900 MHz/.

Interesting for me here is top section.

“… The top is made from coax copper and lambda/4. Note!!! Because the top radiate without dielectric insulation no speed factor is needed! …”

This differ from usual wifi collinear designs.

Very good descriprions about calculating and building this antenna.

QLP Antenna

Freq around 2.4GHZ

and back side

This one is old news but I found this now.

Link : sticked in mikrotik wireless forums and http://www.engadget.com/world-record-5ghz-wifi-189-miles/

304km is very good result. Congratulations!

While I aiming stable links of about 1 to 3 km this looks impossible to reach for me.

Interesting is - home made antennas - they used 1.2 meter dishes and homemade feeders for reflectors.

Here is hardware used : “a pair of Ubiquiti XR5, and a pair of handmade antenna (120cm satellite dish for the surface, and a bronze ball-bearing extracted from a bus).” After connection cards power is lowered to 10mW !

The link is possible due some of the features of the Mikrotik software.

As constructor of the antennas is mentioned Paolo IK0PCJ - You can find a link to his site in my previous post.

Look like that the smaller feeder is used. There are NO dimensions on the forum so I do not put links to it.

This look simple enough so if You know the frequency - You will be able to calculate and build one of these.

At las time a lot of hits came from a Poland there are some good wifi forums but I cant find online translator

Here one interesting antenna from diy.wifi-live.pl

This is some strange Biquad and Yagi hybrid.

Dimensions :

/odległości:

deflektor- 36
/19
quad- 34
/17
direktor1 33
/17
direktor2 32
/17
direktor3 31
/17
direktor4 30
/17
direktor5 29

There are no results or testing for this antenna.