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VK3JMA > WLAN 13.09.03 10:03l 99 Lines 3330 Bytes #999 (0) @ WW
BID : C00213VK3JMA
Read: DB0FHN DJ2RT OE5RCO HA1SE DK5RAS HA1WQ DO6NP GUEST
Subj: Wireless Lans
Path: DB0FHN<DB0RGB<OK0PPL<DB0RES<ON0AR<VK6HGR<VK3AYM<VK3DSE
Sent: 030913/0020Z @:VK3DSE.#MEL.VIC.AUS.OC #:58131 [Narre Warren] FBB7.00g25
From: VK3JMA@VK3DSE.#MEL.VIC.AUS.OC
To : WLAN@WW
Hello,
I started a few weeks ago a discussion on the merits of Amateurs moving
from a out-dated 1200 baud AX25 system into the world of 802.11b wireless
lan technology.
I will attempt to bring the stages I go through.
I have moved a bit closer to this system.
Recent purchases have included a 802.11b Access poinf and a PCMCIA 802.11b
card for my laptop, cost $170 for both.
This now allows me to link my wired lan to a wireless lan.
The Access Point is essentually a network card linked by RF. and the
PCMCIA is the other end of the link.
Both work at 2.4GHz at upto 11Mbit/s.
It all works seeminglessly as though I was connected via wires. I can
even sit on the front lawn with the laptop and surf the internet, no
wires.
Anyway.....
Hooking up external antenna's to the Access Points (AP's) will greatly
extend the range of your system, depending on gain at both ends of the
link you can expect several Km's for omni antenna's and 10+ Km's for
dedicated Point to Point links. Naturally this is all limited to the
terrian you are transmitting in, 2.4GHz is very much line of sight (LOS).
My next move is just this, setting up a ppp link to another VK3 ham 3.5
KM's away using ex-MDS paytv antenna's (18dbi gain). This will, as
stated, allow us to share resources at each end.
In a 2.4 GHz amateur network, users would still be able to utilise the
Winpack program via the TELNET option. Instead of running FBB bbs's via
AX25, sysops would utilise Telent services for their uses, the look and
feel of "packet" could remain for the diehards.
That would not stop others migrating to the common Internet programs,
email, news, ftp, web browsers, chat services all held within a
encapuslated RF enviroment. Of course, internet can be linked into the
system as well but there could be (local) legal reasons why this may not
be so???
I have scoured the net and found LAN chat programs, LAN Audio streamers
and even LAN video streamers so as users can enjoy the next phase of
'amateur' digital communications with ease, real time Audio & Video QSO's,
digitally.
If like us, locally, you are interested, then you will have to look at
your area topographicily to determine the best placed for ppp linking as
well as user access points, generally with an omni antenna. Our plan, so
far, is to cover an area of approximately 10km by 15 km in area with 3
user AP's and 2 dedicated ppp links linking these user AP's. Naturally as
more and more people in the area become interested the coverage can
increase as people offer to provide infarstructure for the betterment of
the system.
Even for backward compatiability there can be old style ax25 ports for
users unable or unwilling to migrate, still running good ole' 1200 baud on
2m!!!
BTW, this message was composed entirely on my laptop linked to my desktop,
which is the packet system, using Winpack's /remote ability, all at
2.4GHz.
I will post further bulletins as our project progresses.
Jump aboard the train with us, learn and enjoy the ride...............
Watch this space...........
73
Mark
Node GXT on the melbourne wireless database.
http://www.melbourne.wireless.org.au
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73 - Mark, VK3JMA
email: vk3jma@net2000.com.au
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