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Some considerations for selecting the right WiFi device for your wireless network

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Old 13-02-2003, 12:13 PM   #16
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WHat about Draytek 2600WE?

Wireless Router with Built-in ADSL modem.

Anyone try before? How's the response? I'm deciding whether to buy this or not?

Please Advice.... thanks

BebeQ
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Old 13-02-2003, 03:05 PM   #17
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Originally posted by bebeQ
WHat about Draytek 2600WE?

Wireless Router with Built-in ADSL modem.

Anyone try before? How's the response? I'm deciding whether to buy this or not?

Please Advice.... thanks

BebeQ
any idea what is the selling price?
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Last edited by wirelessdan2002; 13-02-2003 at 03:10 PM..
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Old 13-02-2003, 08:40 PM   #18
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Hi wirelessdan2002,

I am a newbie here. However, may I know does more power really mean longer range?

I am thinking of getting a DLink 900AP+ with maybe a DLink DWL-650+ or Enzer Skyroam Gold to get 22 mbps. However, I am now concerned about their range since their power ratings are quite low. FYI, I am living in quite a big house .

Thanks. Regards.

Eddy.
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Old 13-02-2003, 09:45 PM   #19
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Originally posted by EDDY777
Hi wirelessdan2002,

I am a newbie here. However, may I know does more power really mean longer range?

I am thinking of getting a DLink 900AP+ with maybe a DLink DWL-650+ or Enzer Skyroam Gold to get 22 mbps. However, I am now concerned about their range since their power ratings are quite low. FYI, I am living in quite a big house .

Thanks. Regards.

Eddy.
higher power does mean longer range. and wider bandwidth means shorter range too, i.e. with the same power and sensitivity, a wireless adapter working at 22Mbps will have shorter range than a wireless adapter working at 11 Mbps.

so ask yourself if you really require 22 Mbps. bearing in mind that the broadband downstream is only 512 Kbps for ADSL, or 1.5 Mbps for cable.

at 11 Mbps, a 4 MB MP3 file can be transfered between PCs in 5 seconds, a 100 MB video stream can be transfered in 2 minutes.

the Dlink DWL-650+ range (15 dbm output) is roughly (indoor, line of sight) 8 meters at 22 Mbps, 15 meters at 11 Mbps, 20 meters at 5.5 Mbps , and 30 meters at 1 Mbps. so even if you use the DWL-650+, most of the time the data transfer rate will be at below 11 Mbps.

so if you are staying in a big house, go for a system that
having at least 20 dbm (100 mw) output, 11 Mbps is good enough. i have installed a 20 dbm system for a 3 storey terrace house, no problem.

if you want to be more sure, there is 23 dbm (200 mw) system now, the Senao SL2511SR+ wireless router and Senao SL2511CD+ wireless PCMCIA card, retailing at a bundle price of $350, with this you shuld not have problem for a seamless link for a 3 storey big house.

also a point to note, the 11B plus extension (22 Mbps) system is not WiFi certified, and i understand that defferent manufacturers have different standards for this WiFi extension, so mixing brands may not work for 22 Mbps link (no problem for 11 Mbps link though).

as a rule of thumb, every 6 db more of power means double the range - the "6 db rule", so 23 dbm will give you more than double the range of 15 dbm (8db difference).
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Old 13-02-2003, 11:06 PM   #20
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I see..thanks wirelessdan2002,

I am indeed living in a 3-storey terrace .

Maybe I should get the Fulbond access point cos it's cheap, but what about the pcmcia card? I don't see any 20 dbm cards except the Cisco one which is really expensive? Should I get a card with lower power rating?

I am actually quite apprehensive about getting the Senao solution (or even the Fulbond) as I have never heard of their brand before.... don't know how is their support or user-friendliness...

Regards......Eddy.
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Old 14-02-2003, 12:55 AM   #21
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Originally posted by EDDY777
I see..thanks wirelessdan2002,

I am indeed living in a 3-storey terrace .

Maybe I should get the Fulbond access point cos it's cheap, but what about the pcmcia card? I don't see any 20 dbm cards except the Cisco one which is really expensive? Should I get a card with lower power rating?

I am actually quite apprehensive about getting the Senao solution (or even the Fulbond) as I have never heard of their brand before.... don't know how is their support or user-friendliness...

Regards......Eddy.
just found out that Fulbond has brought in the 20 dbm PCMCIA card XI-325H http://www.fulbond.com.sg/PRODUCTS/WIRELESS/XI325H.htm

G2-Tech at 6th floor Sim Lim Sq is selling it for $110, less than 1/2 price of Cisco Aironet 352. think the luck is with you

i have just tried the XI-1250A AP, kind of work out of the box too. Fulbond's range of Wifi products are actually from the more reputable Z-Com from Taiwan, the same unit is sold in Europe as Z-Com XI-1250A, and in USA as ZComax. surprisingly SMC carries the same AP as SMC2655W, being sold here for $220 http://www.smc.com/index.cfm?sec=Pro...prod=76&site=c

oh yeah i last posted that the XI-1250A was sold for $169 from IT Hub, i actually got it from NM (Network Mobility), #06-74 Sim Lim Sq, for $160, and is 18 months 1 to 1 exchange.
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Old 14-02-2003, 09:25 PM   #22
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Oh....you bought the Fulbond XI-1250A? How is it? Any reviews or comments from u?

Thanks...
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Old 15-02-2003, 11:42 PM   #23
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Hi wirelessdan2002

thanks for your very informative research.
I am living in a 5 room HDB flat,
intending to connect 2 desktops with SCV.

for my case. 1 desktop in each room, SCV modem in the living room. Thus, expecting to have max 2 walls in between each desktop.

Am I rite to say that I should get:

Fulbond XI-2300H AP router X 1

Dlink DWL-120 USB Client X 2


in order to get the strongest signal?

I am interested to get the highest speed, not the longest range.

Answer mi if you have time.
Thanks~
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Old 17-02-2003, 12:01 PM   #24
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Originally posted by EDDY777
Oh....you bought the Fulbond XI-1250A? How is it? Any reviews or comments from u?

Thanks...
after almost a whole weekend of usage, i should say the Fulbong XI-1250A is quite a good value for money.

the setup was easy, living up to its name "smart AP", just plug it into 1 of the LAN ports on the router, and it work straight away.

performance wise, despite its small size (slightly larger than the Linksys WUSB11 USB adapter), believe it does deliver the promised 20 dbm (100 mw) power, using Enzer Skyroam Silver PC card on my notebook, the signal strength consistently beat the Linksys BEFW11S4 which is rated at 18 dbm.

recommending this as the wireless addon to existing wired router network, at $160.
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Old 17-02-2003, 12:23 PM   #25
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Originally posted by ComicBook
Hi wirelessdan2002

thanks for your very informative research.
I am living in a 5 room HDB flat,
intending to connect 2 desktops with SCV.

for my case. 1 desktop in each room, SCV modem in the living room. Thus, expecting to have max 2 walls in between each desktop.

Am I rite to say that I should get:

Fulbond XI-2300H AP router X 1

Dlink DWL-120 USB Client X 2


in order to get the strongest signal?

I am interested to get the highest speed, not the longest range.

Answer mi if you have time.
Thanks~
i would agree with the DWL-120, though it is among the most expensive USB wireless adapters around, most shops are selling it for $145, but thought i saw it in some shops asking for $135, however please make sure that you get the latest version, the one sold in Unlimited is an older version. please check up Dlink website to see the image of the newer version. http://www.dlink.com/products/wireless/dwl120/

with 19 dbm of power and -90 dbm of sensitivity from DWL-120, i believe you do not need a 20 dbm AP/router, in this case you will have more choices. i have not tried the Fulbond XI-2300H and also not sure about its price. still recommend Linksys BEFW11S4, at $227 its 18 dbm power should be more then sufficient for a 5-room HDB apartment, assuming :

maximum range 15 meters
2 brick walls in between contributing to -10 db loss

free space path loss (15 meters) = 32.44 + 20 log(2.4) + 20 log (15) = 65 db

total link budget considerations:

18 dbm (BEFW11S4) - 65 db (path loss) - 10 db (2 walls) - 12 db (fade margin) = -69 dbm

-69 dbm power would arrive at the USB client, which is still 21 db stronger than DWL-120's -90 dbm sensitivity, which should be able to work at 11 Mbps rate, even with 128 bit WEP applied.


BEFW11S4 is one of the most popular AP/routers, it is very user friendly and easy to setup, and the price tag of $227 is attractive too.
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Last edited by wirelessdan2002; 17-02-2003 at 12:26 PM..
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Old 17-02-2003, 08:17 PM   #26
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Originally posted by wirelessdan2002

i have not tried the Fulbond XI-2300H and also not sure about its price. still recommend Linksys BEFW11S4, at $227 its 18 dbm power should be more then sufficient for a 5-room HDB apartment, assuming :


How about getting Senao SR2511SR+ at $250?
That will be the most powerful combination I think...

Is it advisable to mix Router AP and USB clients of different brands?

If there might be issues of incompatiblity, I would rather take the whole set from Linksys...
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Old 17-02-2003, 08:51 PM   #27
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Originally posted by ComicBook



How about getting Senao SR2511SR+ at $250?
That will be the most powerful combination I think...

Is it advisable to mix Router AP and USB clients of different brands?

If there might be issues of incompatiblity, I would rather take the whole set from Linksys...
in term of specifications, the Senao combination should be great, but i have no idea how's the setup and user interface like. also they are sure to be overkill for your apartment, and if you are not using WEP, all your neighbour will be logging on to your hot spots

no problem with mixing brands as long as they are IEEE 802.11B WiFi certified, but please take note that the so called 11B+ (22 Mbps) system is not an IEEE 802.11B extension, different manufacturers come out with their own standard eg. Orinoco Gold, Enzer Skyroam Gold, Dlink AirPlus, chances that they are not compatible, so safest to stay with 11B's 11 Mbps.

Senao's SL2511 plus is not the 22 Mbps system, the plus is refering to higher power, as in Fulbond's H extension.
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Old 19-02-2003, 12:51 PM   #28
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Originally posted by Murcielago
tried and tested enzer's wireless router and pcmcia cards ... they sucked big time ... range was poor and i could neverf get it to work properly with my scv. when it did, browsing the web alone was heaps slower than dialup.

i've got them replaced with the linksys models ... the linksys wireless router and pcmcia cards were surprising. They flawlessly worked out of the box and with a firmware upgrade, the range improved somewhat ... i'm getting excellent (100%) signal strength and link quality even when the router is next door. directly one level down in the dining area, i'm still getting good reception (45~50%) and downloads are at full speed (180~200+ KB/s)

go for the wireless linksys routers and pcmcia cards (v.3) as they have been tried and tested.
i don't recommend linksys. they pump only 32mW with the sample i tried. Better option is Aironet 350/1200 which pumps at 50mW.
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Old 19-02-2003, 06:50 PM   #29
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Originally posted by hj


i don't recommend linksys. they pump only 32mW with the sample i tried. Better option is Aironet 350/1200 which pumps at 50mW.
Aironet 342 series card is giving 50 mw, its cost has been brought down to $120, from almost $200.

Aironet 352 gives 20 dbm 100 mw, but the $250 price tag can get 3 Enzer Skyroam Silver ($79 each).

the Enzer's 16.5 dbm (45 mw) performs better than Linksys WPC11's 15 dbm (33 mw), is by far the best buy on the market.

if the environment is real challenging which requires higher power, try Fulbond XI-325H, which produces 20 dbm 100 mw too likes the Cisco Aironet 352, but costs only $110.

and if you need to surf from mother-iin-law's flat using your broadband from your own flat in the next block, try the Senao's SL2511CD plus, 23 dbm (200 mw) for $140.
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Old 20-02-2003, 11:35 AM   #30
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Erm... Dan...

Do you have any recommendations for USB ROUTERS? Preferably Wireless.
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