"Jerry Martes" wrote in message
news:lePpi.8517$Ub7.1313@trnddc04...

"mike" wrote in message
...

"Jerry Martes" wrote in message
news:KGKpi.5345$Da.3887@trnddc07...

"amdx" wrote in message
...
Please see subject line-- Help, Wifi Antenna-- on
alt.binaires.schematics.electronic
for a picture of my concept.
Looking to combine Helical antenna and Wifi adapter card in one unit.
My experience is limited to MW bcb. I know there are many pitfalls at
2.4Ghz, so I'm looking for feedback on how to do this properly.
I'm using the following page as my guide.
http://www.wlan.org.uk/jhecker.html

This is to extend the range of my laptop computer.

Mike

Hi Mike

You sure find some great information on the Web.

I consider this article Jason Hecker publishes
http://www.wlan.org.uk/jhecker.html to be ALL the instructions anyone
would need for constructing a 20 dB directivity WiFi antenna. I am
looking for some feedback from you on its performance.

If you plan to investigate basic effects of changing size and shape of
Helix antennas, EZNEC sure makes Helix antenna investigation easy.

I am just curious, what kind of coax and connectors are you using, and,
?how much coax?.

Jerry
Hi Jerry, Please review the picture I posted on
alt.binaires.schematics.electronic
in it you will see I'm trying to avoid connectors and cable carrying
2.4Ghz R.F.
Thanks for being the only poster to have anything near a response to my
post.
Mike


Hi Mike

My computer skills are really lacking. I dont know how to view your
images. I do spend alot of time learning about antennas. One of my
buddies tells me that he had poor results with the helix he built from the
instructions you cited. This site seems to have been better for my buddy.
http://www.pa0hoo.tk/.
Is it practical for you to use a Bridge at the input terminals of your
gain antenna so that the coax loss is minimized? That way, the antenna
(+Bridge) is connected to the computer with CAT 5 cable.
If it isnt too complicated, tell me how to view your images.

Thanks
Jerry


Hi Jerry,
I posted the drawing on another newsgroup called
alt.binaires.schematics.electronic
Not all ISPs carry binairy files so maybe you can't see it, if your address
is good I'll
email the drawing.
I looked at the site and it discouraged me. One site says 34mm diameter
tube another
42mm, one says a 71mm impedance match strip then another says it's longer. I
have no
way to measure the antenna when finished so I'd like to at least start with
the right
dimensions. I will say at least the site you gave does have some equipment
and his
measurements and reasoning make sense.
What is a bridge? I plan on putting a Usb wifi adapter at the antenna.
I hope to remove the smt antenna on the USB wifi card and attach the helical
antenna.
Thanks, Mike