WRT300N and Hi Gain Antennas

Can I attach a high gain antenna to my WRT300n? I get very weak signals when not in the same room as the router and I have read that range extenders (WRE54G) don't work with N but that hi gain antennas will increase signal strength? True? What products should I use and are there instructions available on replacing the existing antennae(s). Thanks

Thanks for the response! I have not been able to figure out how to detach the antennas. I believe another site I saw at Linksys said they weren't detachable but I am happy to try.

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AP /w High-Gain antenna

Experts,
I got a customer's reqeust about 1262E /w special Ant which is high-gain than traditional Ant (dipole 2-3dB).
They think this would improve of its coverage area.
But, once upon the time, I used to test 1252E with high-gain directional Ant myself. Testing result shown us. There is no improvement on coverage range that traditional dipole.
Right now, how would u suggest me please.
Nipat.p
Sent from Cisco Technical Support iPhone App

When using a higher gain antenna, your beam width is narrower the higher you go. The distance coverage is increased on the same height as the antenna, but decreases above and below. So if you test while the AP is maybe sitting on your desk when compared to maybe a warehouse 40' ceiling, there is a difference. The higher you mount the antenna, the less coverage you will get below on ground level. Now one thing you also have to understand it that you need to try to match the lowest clients EIRP. If you increase the gain of the antenna and the power is also set at max or 100mW, the client might hear the AP real good, but the clients data might not get revived by the AP (the ap will not hear the client as good especially since most client devices have 0-2dbi gain antennas).
The best way to provide better coverage is additional APs.
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Wrt300n and wap 4400n for network in iraq

Here is what i want to do and what i have. I need to know what else i need please:
I am in iraq trying to setup a wireless network with 2 parts. I have the wrt300n that will be connected to the internet to setup up wireless internet and the wap4400n so that i can setup a local network. the internet goes up and down so often that i need the local network to chat with others. from the router to my location is about 75ft with 15ft tall concrete barriors in the way. the wap4400n will be setup at my location. the computers that i want to communicate with for both internet and chat are aprox 175ft in a triangle from my location to two locations with concrete barriors periodically placed. i have not been able to test the system yet.
Question #1: what range extenders can I use that will allow me to extend both systems.
Question #2 what do these extenders need to be connected to(power) and are these antennas able to be placed outside?
Question #3: can the wap4400n be used as one of the extenders for the router to boost the internet signal?
Question #4: what is the reccomended distance before you need to get an antenna booster. I know this varies based on situation.
Thanks in advance.
Ray from south of baghdad.....

i don't think that the WAP4400N is capable of repeating the wireless signals..it can function only as an Access Point...so the only way to use it would be to run an ethernet cable between the WRT300N and WAP4400N...
if u want more range , better set up would be
WRT300N -->> WAP54GP( AP Mode) ~~~~~~ WAP54GP ( Wireless Repeater )

LOW Gain Antenna for WRT54G

Does anyone know if they make a low gain antenna for a WRT54G wireless router?
I have used the wireless router for over a year with any problems. Suddenly the wireless quit. Bought a new WRT54G but had the same problem. Hardwired connection works fine. Discovered that a nieghbor got a wireless system. Tried all 11 channels but wireless still quits working when it sees the other network. Tried 3 different laptops so I know its not the PC card. Want to try a lower gain antenna so my router doesn't see the neighbors.

What is the version of your WRT54G? It is unlikely that a weaker signal from your router will help your problem.
A more likely explanation for your problem is that the wireless adapter in your computer is getting "drowned" by your neighbor's signal. A high gain antenna on your router would help your router to overcome the effects from your neighbors.
There are several other things you can do to try to improve your wireless connection:
First of all, give your network a unique SSID. Do not use "linksys". If you are using "linksys" you may be trying to connect to your neighbor's router. Also set "SSID Broadcast" to "enabled". This will help your computer find and lock on to your router's signal.
Poor wireless connections are often caused by radio interference from other 2.4 GHz devices. This includes wireless phones, wireless baby monitors, microwave ovens, wireless mice and keyboards, wireless speakers, and your neighbor's wireless network. In rare cases, Bluetooth devices can interfere. Even some 5+ GHz phones also use the 2.4 Ghz band. Unplug these devices, and see if that corrects your problem.
In your router, try a different channel. There are 11 channels in the 2.4 GHz band. Usually channel 1, 6, or 11 works best. Check out your neighbors, and see what channel they are using. Because the channels overlap one another, try to stay at least +5 or -5 channels from your strongest neighbors. For example, if you have a strong neighbor on channel 9, try any channel 1 through 4.
Also, try to locate the router about 4 to 6 feet above the floor, in an open area. Do not locate it behind your monitor or near other computer equipment or speakers. The antenna should be vertical.
Also, in the computer, go to your wireless software, and go to "Preferred Networks" (sometimes called "Profiles" ). There are probably a few networks listed. Delete any network named "linksys". Also delete any network that you do not recognize, or that you no longer use. If your current network is not listed, enter its info (SSID, encryption (if any), and key (if any) ). Then select your current network and make it your default network, and set it to automatic login. You may need to go to "settings" to do this, or you may need to right click on your network and select "Properties" or "settings".
If the above does not fix your problem, download and install the latest driver for your wireless card.
If you still have trouble, download and install the latest firmware for your router. After a firmware upgrade, you must reset the router to factory defaults, then setup the router again from scratch. If you saved a router configuration file, DO NOT use it.
Hope this helps.

What happens when Ap has two different gain antennas

Hi all..
I have two question?
In a Warehouse, I have a high density of Access Point 1240, each AP have only the radio b/g active and each AP has two antennas. One antenna is 2.2 dBi and the other antenna is 5.2 dBi. This affect to the signal, or throughput?
The Ap is at around 82 feet high, is out of estandar. What happens if I reduce the transmit power?.Can the wifi client connect to the ap and work fine?
Thanks for your help

#Two differrent gain or antenna type(with or without RF overlap) works good for one client, when more than one client communicating to different antenna would yield poor performance. see the link below.
#dtpc and datarate would also drastically change based on the client connected antenna that is not discussed in the link.
#With one antenna there won't be diversity and yes there will be a performance hit when compared to having multiple antennas.
#Either use two similar model or one antenna, If you don't have two similar antenna model you can still connect one antenna and on AP's antenna diversity setting you can have either left or rigtht based on the antenna connected to the radio port on AP.
Multipath and Diversity
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a008019f646.shtml

Difference between Circular, Rectangular and Free form Antenna??

Hi All,
What is the difference between a Circular, Rectangular and a Free form field Antenna other than the physical appearance?
Thanks,
Shridhar..

Hi Shridhar,
RFID Antennas
RFID antennas are always connected to an interrogator. This allows for the transmission of signals to and from the tag.
Antenna Design
Depending on the design, antennas can be either mono-static or bi-static:
Mono-static antennas are based on a principle by which a single antenna transmits a signal coming from the interrogator to the area as well as receives a signal coming from tags and these functions are switched in fractions of seconds. This requires use of a circulator in a reader that multiplexes the receive and transmit signals through a single port. There is some loss and phase distortion due to the use of a circulator.
Bi-static antennas include two antennas, where one antenna is dedicated to transmitting, and the other antenna is dedicated to receiving. Both dedicated antennas can be but do not have to be in the same casing. In bi-static antenna, a circulator is not required, which improves the performance and sensitivity of the antenna.
Antenna Polarity
Antenna polarity is very important because it affects the quality of communication between the interrogator and tag.
The interrogator's antenna and the tag's antenna should have the same polarization. If polarization is not realized, a severe loss in signal, along with a drastic decrease in a read range, which results in unsuccessful communication with a tag, can be experienced.
<b>Polarization can be either circular or linear.</b>
Linear polarization is relative to the surface of the earth.
<b>Linear polarization can also be either horizontal or vertical:</b>
Horizontally polarized signals propagate parallel to the earth.
Vertically polarized signals propagate perpendicular to the earth.
Antennas with circular polarization can receive signals from both the vertical and horizontal planes by injecting the signal at two points on the antenna radiated slightly out of phase creating a rotating effect on the field. However, there is a slight loss of signal strength, due to the constructive and deconstructive effect of the field being slightly out of phase.
Refer this link to get the other details regarding the Antenna Design
http://www.ibmpressbooks.com/articles/article.asp?p=413662&seqNum=2&rl=1
Also the Refer this link to get the detailed Antenna Anatomy
http://americanrfidsolutions.com/members/download/3.pdf
I hope This answers your question.
Regards ,
Pawan

How to set the exposure time and the gain of a connected camera with IMAQ USB

A camera was connected to my computer with USB port and we can acquire the image through IMAQ USB. Now we have to set separately the exposure time and the gain with the camera's driver software provided by the manufacturer. My question is: how to set directly the exposure time and the gain of this camera in Labview?

Hi Frank
Welcome to the forum. Have fun
FranklinT wrote:
My question is: how to set directly the exposure time and the gain of this camera in Labview?
I think its not possible for USB Cameras.
Previous threads for your ref
http://forums.ni.com/t5/Machine-Vision/How-to-control-property-nodes-for-USB-camera/td-p/970306
http://forums.ni.com/t5/Machine-Vision/imaq-USB-property-page/td-p/926034
Sasi.
Certified LabVIEW Associate Developer
If you can DREAM it, You can DO it - Walt Disney

WRT300N and SD2008

Hi, I'm trying to update my home network. I did have an older wired Linksys router and switch set up and everything was working fine.
I wanted to add wireless capability to my network and add a switch with more wired ports.
I'm now using the Linksys WRT300N and an SD2008 switch. I have 2 desktop computers, 2 Tivos, and 2 other wired jacks for connections.
The 2 desktops are both able to access the Internet.
The 2 Tivos can connect to the Internet for updates.
The 2 desktops can see the Tivos on the network.
The 2 Tivos CANNOT see the desktops (though they can see each other).
The laptop won't connect to the Internet or the home network via either of the other 2 wired jacks.
Via the Linksys Advisor, I can see both desktops and both Tivos from my desktop. I CANNOT see the laptop (no matter which jack it's plugged into).
(I haven't even tried to set anything up wirelessly yet.)
I don't have any clues at all how to fix any of this. I've tried disconnecting everything, reconnecting, it, recycling, etc.
Any suggestions?
Thanks in advance for the help!

In your computers, temporarily turn off the software firewall, including Windows Firewall, and see if that helps.

Wrt300n and Compaq nx8220

I have a brand new wrt300n and Compaq nx8220 and the can't connect.
Have the latest firmware.
I can se the networks but i cant connect to them.

No.
The network shows up as unprotected.
I have no problem to connect with the workstation with WMP300N pci adapter fitted.
It's just the laptop that has this problem.
I have 2 Compaq nx8220 that has the same problem.

WRT300N and Gaming?

I have recently purchased a WRT300N and am having problems connecting to some of my computer games. I opened the ports on the router, but it doesn't seem like the ports actually opened. When playing Diablo II, I can be the server and have another computer on my LAN connect to me, but I cannot connect to another computer on my LAN. I also use a bit torrent program, it is telling me to recheck my port forwarding and make sure the proper ports are open. As far as other games like Rappelz go, I cannot connect to their servers to play. Any suggestions as to what I am doing wrong?

Opening ports on the router only affects connections from the internet into your LAN. It does not affect LAN connections. On the LAN side the router is basically a simple ethernet switch. If you can connect in one direction but not in the other it is usually because of a firewall installed on the computer to which you cannot connect.
Otherwise, please post the exact settings you have tried.

WRT300N and wireless G

I have the WRT300N and my laptop is only wireless g right now, how do I make it run in super g so i get 108 mbps instead of 54?

That is a great question. I don't see any clear documentation of the answer on the Linksys web site. Maybe someone else can point it out.
The general rule is that in order to get the most speed from your router, you must have a matching notebook adapter. Since you have a wireless-N router, you can probably expect the best performance if you got a wireless-N adapter for your laptop, such as the WPC300N.
If you only use an ordinary wireless-G card, you will be limited to 54Mbps.

Wrt54g version 8 and non removable antennas

Campground that we stay at and helped set up the wifi has a wrt54g with an external directional antenna for remote users. and one regular rubber duck anteanna for local wireless users in the office. Further out in the campground there is a wap54g with a directional attenna pointed towards the wrt54g and an omni antenna for uses in that area to receive a good signal.
The wrt548 may be having issues, so the owner purchased a replacement one, however the new wrt54g is version 8, which does not have removeable antennas. Does anybody have an idea on where once can find a previous version, or suggestion on what other Linksys gear coupld be used to replace the setup that he has now.

Not true, I had this run around with Linksys a year ago..
Almost the same thing. We were setting up a campsite and had a WRT54Gs and a WAP54G and we could not get it to work. One tech said it would one said it wouldn't.
The had me try all kinds of configuration including fixed IPs. Nothing. And I"m a reseller and Partner (not anymore).
Bottom line, after threats I got an engineer and here is the story ... It will not work.
We swapped out the router with a 'G' instead of a 'GS' aand it worked first try.
Second, Version 8 does not have removable antennas, only thru version 6.

WRT300N and laptop inconsistent connectivity

Once of twice a day I boot up my laptop and find that it has lost connectivity to the WRT300N. I'm usually able to restore it by pushing the reset button or fiddling with the software (I'm never quite sure what it is that I do that restores the connection successfully).
I have security enabled and when it works, it works great. What should I be looking for in order to make the connection more stable?
Thanks,
Nic

It seems that router setup page is not loading 100% .....
Disable firewall & antivirus software ....
Click start >> control panel >> Internet option >> Under ganeral .... click delete cookies & files .... click clear history .... click OK ....
Try opening once again the setup page....
If it still shows the same kind of page ....try upgrading of router firmware ...

Normalisation and Changing Gain - what's the difference?

Hi Everybody,
Simple example: I have an audio file with a maximum peak of -5 dB.
What is the difference when I either add 5 dB with the 'change gain' function, the normalize function or the gain plug in? Do they not all do exactly the same? Don't they all 'up' my noisefloor 5 dB as well?
I was wondering because I get the impression that Normalisation is seen here as an abomination, an affront to craftsmanship. But is it? Or is that because it implies not having levelled the input signal 'perfectly'?
regards, Erik.

ambient8 wrote:
Hi Erik,
Your example is using all 3 tools to change the gain to the maximum level. If that is your desire then I don't believe that there would really be any difference in your result.
It is not so much about my desires as it is about my curiosity, since so many seasoned musicionados here appear to quiver with curled toes at the prospect of normalisation, which made me think that maybe something about the algorythm was different.
Normalization does not give you any control over the amplitude level. It always goes to maximum. So unless you want to change it to the maximum level it is not the right tool.
I believe in both Logic and Peak you can set a percentage or a deciBel-age.
Also, i think a lot of distrust of normalization comes from the fact that it used to be a destructive process that could yield unexpected results. Being that is not the case now it is easier to experiment with it without worrying about ruining your recording.
Yep, that was one of my deliberations too. Thanks Ambient, for your 2 cents!
regards, Erik.

Volume panel and subwoofer gain

hello,
last week i had install windows 7 (i had xp before) my sound card is XFI audio and i notice that since i install windwos 7 the subwoofer is not working , i remember that in windwos xp i had volume panel and there was option about subwoofer gain .
but when i install console luncher under win7 i get crackle/disturbance but without the console luncher everithing is ok.
so i am asking if there is any other option to enable subwoofer gain under win7 witout install console luncher?

are you using 5, speaker system ? i think you are not . because if you are trying this on 2. sound system , sub woofer output is not working . sub woofer output is working only on 5, or more . with that option sub woofer output is start to work .
and which x-fi product you are using ? on console launcher there is option for extra bass output . but as i said if you using only 2. sound system (i mean only left and right speaker) you will not any sound from your sub woofer (of course if you connect ?your sub woofer to sound card directly ?)
if you can give more details about your specs we can help you more better

WRT300N and Hi Gain Antennas

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