Build a NO COAX wifi waveguide antenna 1 hour

ac6ts · 03-24-2005

Build this NO COAX 2.4 ghz WiFi antenna in less than an hour. All gain no lossy coax. Super simple wireless network range extender for 802.11 g or ?. Can go mobile hotspot hunting or bridge distance issues from home office. Really kicks butt!
See Construction Details HERE

wrzwaldo · 03-24-2005

Where are the rest of the poll choices?

Scruge · 03-30-2005

Quote:

Originally Posted by ac6ts

Build this NO COAX 2.4 ghz WiFi antenna in less than an hour. All gain no lossy coax. Super simple wireless network range extender for 802.11 g or ?. Can go mobile hotspot hunting or bridge distance issues from home office. Really kicks butt!
See Construction Details HERE

I'm surprised your dlink 120g can even make a connection. I bought 2 of them 4 or 5 months ago when a local dealer had them for $5 after rebate.
Neither of them would connect to anything > 20' away. Even tried them with a dlink AP.

streaker69 · 03-30-2005

Damn what's that annoying sound?

Oh wait, it's my spam detector.

Dutch · 03-30-2005

Quote:

Originally Posted by streaker69

Damn what's that annoying sound?

Oh wait, it's my spam detector.

You need to change the triple A's or use the AC adapter. That spam is a week old, before your detector detected it..

(And if the powersupply for the S.D is snagfree, then I'd suggest a visit to the audiologist

)

Dutch

streaker69 · 03-30-2005

I guess it just went off because someone pushed it to the top of the list.

lincomatic · 03-31-2005

Duh.. if you want to make it really super you should design it right. You're supposed to make it 1/4 of the waveguide wavelength, not the wavelength of the signal.

Using my cantenna calculator

http://www.lincomatic.com/wireless/software.html

1/4 wave for a 4" diameter can is ~1.71"
Yes, the diameter does matter ... it's what determines the waveguide wavelength, so the distance needs to be adjusted if the diameter changes.

This design won't give you nearly the gain of a real cantenna. For one thing, an important part of the regular cantenna's design is dependent on the length of the probe, which you can't really adjust, since you're sticking an antenna inside it. It's a nice way to get some extra gain in a pinch since it's so quick and dirty to build, but calling it super is wishful thinking.

wrzwaldo · 03-31-2005

Looking at the bottom picture I would have to question this claim.

Quote:

So far I can connect and stay connected to wireless HOTSPOTS 3/4 mile away at 24mbs daytime and 54mbs at night...

That sounds more like wishfull thinking as it looks like FZ encroachment is near 50% (per the bottom photo).

04-01-2005

I build such devices with XI-725 USB (16dBm power) , they working for a mile with 1mb/s if correctly pointed. The only competitor is SENAO.

wrzwaldo · 04-01-2005

Quote:

Originally Posted by bubaka

I build such devices with XI-725 USB (16dBm power) , they working for a mile with 1mb/s if correctly pointed. The only competitor is SENAO.

Bullshit! Three other cards I know for sure that will do it is the Demarc, Zcommax and Fastlink 800C.

We have shot a Fastlink 3+ miles @ 2Mbps.

And just out of curiosity what is at the other end of your mile link?

streaker69 · 04-01-2005

Quote:

Originally Posted by wrzwaldo

Bullshit!

I think you need something stronger.. Here let me help.

ac6ts · 04-02-2005

Quote:

Originally Posted by lincomatic

Duh.. if you want to make it really super you should design it right. You're supposed to make it 1/4 of the waveguide wavelength, not the wavelength of the signal.

Using my cantenna calculator

http://www.lincomatic.com/wireless/software.html

1/4 wave for a 4" diameter can is ~1.71"
Yes, the diameter does matter ... it's what determines the waveguide wavelength, so the distance needs to be adjusted if the diameter changes.

To Lincomatic,

Your little calculator program seems to be RIGHT ON. I moved the antenna to your 1.71" and picked up 3 more db. Was -87db now -84.
Easy to move because it is hinged. I anticipated adjustments so I built it adjustable.
Great program!

lincomatic · 04-02-2005

Quote:

Originally Posted by ac6ts

To Lincomatic,

Your little calculator program seems to be RIGHT ON. I moved the antenna to your 1.71" and picked up 3 more db. Was -87db now -84.
Easy to move because it is hinged. I anticipated adjustments so I built it adjustable.
Great program!

Glad you learned something. Oh, and thanks for letting the users on your website know where you learned it from:

Quote:

Originally Posted by ac6ts's website update

At first I had the antenna 1 1/4' from bottom with a -87db reading. Then I moved it forward, (it is hinged), to 1.70"-1.75" from bottom, and picked up another 3db at new reading of -84db. This seems to be the best spot so far.

Sheesh, you make it look like you figured it out yourself. Since you made it hinged to move, why didn't you just experiment in the first place? You could at least have to courtesy to let the readers of your website know how you discovered the proper tuning for your antenna.

Dutch · 04-02-2005

Quote:

Originally Posted by lincomatic

Sheesh, you make it look like you figured it out yourself. Since you made it hinged to move, why didn't you just experiment on the first place? You could at least have to courtesy to let the readers of your website know how you discovered the proper tuning for your antenna.

Of course he went and did that.. How else could he keep up his appearence as a l33t h@x0r WiFi Guru

Dutch

Airstreamer · 04-02-2005

Quote:

Originally Posted by Dutch

Of course he went and did that.. How else could he keep up his appearence as a l33t h@x0r WiFi Guru

Dutch

Sheesh. Just screwing around with a Linksys 54g and a $15.00 (US) Airlink card plus a 15 and a 24 dBi antenna, I could get bursts of over 4mb/s at 2.4 miles.

No trick high power stuff required. Does that qualify me for the l33t h@x0r WiFi Guru 2? <barf>

View Poll Results: How does this work for you?
Super	0	0%
OK	0	0%
Have seen similar things on the NS Forums since 2001	500	100.00%
Voters: 500. You may not vote on this poll

03-24-2005	#1 (permalink)
ac6ts Banned Join Date: Mar 2005 Location: So.Cal Posts: 3	Build a NO COAX wifi waveguide antenna 1 hour Build this NO COAX 2.4 ghz WiFi antenna in less than an hour. All gain no lossy coax. Super simple wireless network range extender for 802.11 g or ?. Can go mobile hotspot hunting or bridge distance issues from home office. Really kicks butt! See Construction Details HERE

03-30-2005	#4 (permalink)
streaker69 Psychic Amish Stumbler Join Date: Jul 2004 Location: Virginville, BlueBall, Bird In Hand, Intercourse, Paradise, PA Posts: 12,240	Damn what's that annoying sound? Oh wait, it's my spam detector. __________________ Treat your gun like your genitals, only whip it out when it's absolutely necessary.

03-30-2005	#6 (permalink)
streaker69 Psychic Amish Stumbler Join Date: Jul 2004 Location: Virginville, BlueBall, Bird In Hand, Intercourse, Paradise, PA Posts: 12,240	I guess it just went off because someone pushed it to the top of the list. __________________ Treat your gun like your genitals, only whip it out when it's absolutely necessary.

03-31-2005	#7 (permalink)
lincomatic Squaaawk! WiFi! WiFi! Join Date: Apr 2002 Location: Tinsel Town Posts: 1,682	Duh.. if you want to make it really super you should design it right. You're supposed to make it 1/4 of the waveguide wavelength, not the wavelength of the signal. Using my cantenna calculator http://www.lincomatic.com/wireless/software.html 1/4 wave for a 4" diameter can is ~1.71" Yes, the diameter does matter ... it's what determines the waveguide wavelength, so the distance needs to be adjusted if the diameter changes. This design won't give you nearly the gain of a real cantenna. For one thing, an important part of the regular cantenna's design is dependent on the length of the probe, which you can't really adjust, since you're sticking an antenna inside it. It's a nice way to get some extra gain in a pinch since it's so quick and dirty to build, but calling it super is wishful thinking. __________________ ~lincomatic

03-24-2005	#2 (permalink)
wrzwaldo I amuse you? Join Date: Dec 2003 Posts: 9,147	Where are the rest of the poll choices?

04-01-2005	#9 (permalink)
bubaka Posts: n/a	I build such devices with XI-725 USB (16dBm power) , they working for a mile with 1mb/s if correctly pointed. The only competitor is SENAO.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode