In contrast the entire box of tricks used here today came to ~NZ$75, & with a USB active extender (~NZ$30) cables could be run on The real attraction with USB of course is the jelly bean cheapness ofĬable & connectors-we paid NZ$95 for just a 1/2m Orinoco pigtail inĢ002 that eventually broke it's tiny connector! Grr. Increases to say 5-10km may result - dB maths says each 6dB With DIY dishes (each 15-20dB ?) then range when spacings were ~32mm ( which of course is 1/4 Simple metallic plates behind the unit gave significant weak signalīoost, espec. Perhaps the classic "Sardine can" biquad reflector? Quick trials with NS 0.4 showed useful gain with even a bare metal THOUGHT - fit this thumb at the focal point of a directive antenna? Sniff ! That USB adaptorsĬeramic antenna may be the culprit - anyone fancy a "hack" & Simple food can reflectors at each end look only good for ~2km LOS, & this USB receiver doesn't seem as sensitive as an esteemed PCMCIA Orinoco. Experiences however indicate already that such Mt.Vic, where a standby Orinoco Sardine can biquad easily handles
#Double biquad wifi antenna nec files trial#
We'll give it a further trial tomorrow across the inner city Basin Reserve to While walking around the house/yard/street with a Dell Axim PDA & a USB device on a broom handle tied to the roof,fed by ~5m of regular elĬheapo USB cable from an XP laptop running the new NS 0.4 inside.Īs always LOS means just that at 2.4GHz, & assorted in line trees &īuildings caused massive signal losses, so ~100m was all we managed Tradition we ran a few LOS(Line Of Sight) scouting trials,supporting the & perhaps upload a NS file,but picked up a AP ~500m LOS away OK.Ģ5th April 2004: Well - ANZAC day dawned fine here in Wellington (NZ), so in best military Maybe do a roof top "sweet spot" trial from here in central Wellington, New Zealand Lossless compared with COSTLY microwave coax cable & connectors. Yah! Can't say things lookīullet proof with NS 0.4 yet, but it's certainly a tempting way to go, since USBĬables & active extenders are dirt cheap,& being just digital are This DSE sweetie is based on a ZyDAS chipset,& seems to perform almost as well as esteemed Orinocos under XP. LAB NOTES text below intended to document rather than entertain & enthuse- suggest you stay with images for the latter!Ģ1 April 2004: The long awaited NetStumber 0.4 ( + PDA MiniStumb.) is just out ! ( Of course we've been trying all sorts of Wi-Fi cards to hand! Originally NS only favoured Orinoco PCMCIA, but the latest flavour IS talking to such cheapies as the popular NZ Dick Smith Electronics (DSE) NZ$69 USB thumbĭongle adaptor (cat XH6822). The author- who first wrangled antenna as a radio ham in the 1960s- is a career educator with a flair for innovation, with extensive hands on WiFi experiences - has insights into "his" 2002 Lucent Orinoco PCMCIA driven Sardine Can Biquad antenna.
Guess our project even has East meets West cross cultural aspects- in the style of Kiwi Fruit evolving from Chinese Gooseberries !? Lab note jottings below pix rather blog style,but arose during an educational WiFi workout & are intended to stimulate others into similar DIY investigation. NZ Kiwi's are champions of such #8 wire ingenuity,with our electric fences a typical appropriate technology. NB-the phrase "Poor Man" is not usually considered insulting, but indicates (possibly with a degree of DIY pride) a desire to "make it do, use it up, wear it out" while laterally solving a problem. BUT -short on reading time? Documenting lab notes & links too dry? Need WLAN access pronto? No Asian cookware? Check fast track INSTRUCTABLES such as our Poor Man's WiFi or the associated sieve, steamer or scoop inspired spin offs instead!
#Double biquad wifi antenna nec files full size#
ĭIY antenna details best followed from pix -click on a thumbnail for full size (800 x 600) images. NB-unless you use more powerful USB adapters (such as ALFA & Senao offerings mentioned below),weak USB adapter output power may mean you now hear more stronger APs than you can link back to. This altruistic educational project is hosted (free!) by ORCON in "down under" New Zealand - a mirror is at => => (Italy) Make 2.4GHz parabolic mesh dishes from cheap but sturdy Chinese cookware scoops & a USB WiFi adaptor! The largest so called "WIFRY" or "WOKTENNA" (12"= 300mm diam) shows 12-15dB gain (enough for a LOS range extension to 3-5km),costs ~US$5 & comes with a user friendly bamboo handle that suits WLAN fieldwork- if you can handle the curious stares! Neater boutique versions may better appeal indoors. USB adaptors & DIY antenna = "Poor Man's WiFi" ?
0 kommentar(er)
