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VK3JMA > WLAN 30.10.03 15:12l 65 Lines 2302 Bytes #999 (0) @ WW
BID : 8E0252VK3JMA
Read: DO1RJ DB0FHN GUEST OE5RCO DK8TQ DK5RAS DO6NP
Subj: Happenings....
Path: DB0FHN<DB0RGB<OK0PPL<DB0RES<ON0AR<7M3TJZ<LZ3NP<KD7HAH<GB7BHX<ZL2BAU<
VK3AYM<VK3DSE
Sent: 031030/0920Z @:VK3DSE.#MEL.VIC.AUS.OC #:62142 [Narre Warren] FBB7.00g25
From: VK3JMA@VK3DSE.#MEL.VIC.AUS.OC
To : WLAN@WW
Hello People,
I have been quite on the WLAN front of late, not that I havent been doing
anything, but it has been taking quite a bit of time and experimentation
to get to where we/I am so far.....who said that it wasn't amateur radio,
bloody hell, I have played more radio on 2.4 GHz of late than anywhere
else!!!!!
Anyway, it gave you lot a chance to pick on someone else's topic for a
while!!!!!!
Glenn VK3YY and Myself have managed a 7km link at 1 Mbit/s. At first it
was only the decoding of 802.11b beacons, then the other night we managed
some successful pings to and from each other, well, I suppose a ping, id
successful, must be from both sides of the link, hey? Anyway, from there
we have both been able to access each others Web Servers, mine a simple
HAMSERV Web Server, Glenn's a well presented series of pages on a
dedicated Web Server...ABWSX1.EXE, at least that is the filename I FTPed
from him, also on 2.4 GHz, I averaged 130000KBytes/Sec Plus!!!!! Makes
40cps on 1200 Baud Packet a bit slooowwwwww!!!!
Note to critics, all still done on RF!!!
An interesting point, this was all done with signals 2 to 3 db above the
noise, Noise was -97dbm and sig's where -95,94,93 dbm, hence the need to
use 1MB/s speed.
With some further RF experimentation, less Coax, better dish allignment,
various feeds, we should see the signals rise 3 or 4 dbm, which may make a
2 or 5.5 MB/s link possible.
My dish feed was a home made Dipole with bazooka decoupling match.
I also have a Dipole with Balun match to try, this actually exibits a
better VSWR that the Bazooka Match.
Also one feed I have is a 5 element 2.4 GHz Yagi designed by WA5VJB that I
will be experimenting with, I expect some good results from this.
Anyway, guys and gals, as info comes to hand I will post here.
In the mean time, why not run down to your local computer store and buy
some wireless gear and start experimenting yourself.
For those that do not know, I am using a DLINK DWL650 PCMCIA card into a
166MHz laptop, around +15dbm (32mW) into a 25dbi ex-paytv (MDS) dish with
around 10 meters of heliax inbetween.
Regards
Mark
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73 - Mark, VK3JMA
email: vk3jma@net2000.com.au
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