[wlanfhain] Re: Welche Antennen nutzt ihr ? (und Vorstellung ...)

[Jens Nachtigall]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Weitere Bauanleitung für primitive aber leitstungsstarke Antenne:

Zitat von 
http://www.sveasoft.com/modules/phpBB2/viewtopic.php?t=250&start=20

I have been trying lots of different antenna designs. The simplest and 
smallest one I have built to date is a bicircle. 
 
 http://www.burrowes.org/WiKarekare/Antenna/bicircle.html 
 
 It is 120mm square and 15mm deep. I get 14DBi gain and it has quite a 
wide beam. At 2.5Km, talking to a 19DBi slotted waveguide, I can turn 
it almost at right angles to the signal. 
 
 I have varied the circles height off of the reflector from 15mm to 31mm 
and had no apreciable change in the gain. The thing that did affect the 
gain was the distance between the two wires between the connector and 
the circles. This is supposed to be 50 ohm coax, but I didn't have any 
and two wires seems to have worked just as well. Mine taper from 6mm to 
4.5mm. 
 
 To get a circle, I bent the wires (123mm long) around a piece of 40mm 
diametre pipe





Am Samstag, 17. April 2004 12:30 schrieb alve:
> Helix-Antennen koennen auch mehr als einen Kilometer ueberbruecken
> und sind auch nicht schwer zu bauen (wenn man weiß, wie's geht...) -
> einfach nach helix oder helical googlen
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)

iD8DBQFAgvHnAzJOgw63+4oRAtcYAJ0TWhDRDxZLnITfME5U7z2MOPTAYgCeKxeV
aM0yglo+ebORxD71N+poFn0=
=Vekh
-----END PGP SIGNATURE-----