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2027 Views 87 Replies Latest reply: Oct 14, 2005 7:37 PM by GW Schreyer
Currently Being ModeratedJun 4, 2005 1:16 PM (in response to David MacDonald2)part of the airport management tools
Currently Being ModeratedJun 4, 2005 4:00 PM (in response to GW Schreyer)Thank you. I have downloaded Airport Client Monitor. The green signal line and the red noise line track each other almost exactly at around -80 dBm. The blue transmit rate varies between 10 and 40 Mbps (mostly around 25 Mbps). I will have to investigate further to determine what these results mean.
I will report back if and when I discover anything.
Currently Being ModeratedJun 4, 2005 4:44 PM (in response to David MacDonald2)this is saying that you have a signal level problem. The difference between the lines should be at least 10 dB. 0 dB SNR occurs around maximum range.
At a range of a few feet, you SHOULD see a SNR of 30 dB more. I would suspect that you have a hardware problem somewhere. Number one suspicion is that you have not inserted the antenna connector into the airport card far enough.
Currently Being ModeratedJun 5, 2005 6:03 AM (in response to GW Schreyer)On the Powerbook the strength and noise continue to track each other, wih transmit rate always around 25 Mbps, often less. I can only get access when within 15 feet of the base station, sometimes not even that when the signal drops completely.
On a G4 iMac using the same AE base station there is a clear difference between strength (around -65 dBm) and noise (almost flat at -40 dBm). The transmit rate is usually over 50 Mbps and hardly ever less than 40 Mbps. The base station is about 25 feet from the iMac and on the floor below.
So, if I do have a hardware problem in the Powerbook (as it seems I do), then it occured at the same time as I installed Tiger, because before that the Powerbook had 100% problem-free AE access. Very strange but probably not impossible (the AE card was built in to the Powerbook when I purchased it by the way, i.e. I did not install it myself).
Thank you for your help.
Currently Being ModeratedJun 19, 2005 5:56 PM (in response to joelzenny)Some experimental data.
Powerbook G4, Netgear DG834g wireless router. Domestic situation: usually router upstairs beside PC desktop for hardwire connection, most frequent use downstairs with Powerbook.
No problem with Panther. Installed Tiger, and catastrophe: slow, variable, intermittent connection.
This weekend downloaded MacStumbler, booted from 10.3.9 CD, and did some comparisons which you may like to see. The figures are Macstumbler readings (dB?). Router has been moved downstairs, and laptop is moved about for this experiment.
location distance os 10.3.9 os 10.4.1
dining room (2m) 44-47 45-48
bay window (7m) 37-40 27-34
kitchen table (1 brick wall) 0-24 0-23
bedroom (3m, upstairs) 29-31 23-27
study (5m, upstairs) 37-40 26-27
BTW: G3 w OS 9 had no problem even in the kitchen!
I cannot understand how software could degrade ops of hardware.
Have ordered +7db antenna for router, will then consider ugly expensive Quickertek fix for laptop (www.quickertek.com) - but it should NOT be necessary in my view. Apple please fix.
Currently Being ModeratedJul 21, 2005 4:37 AM (in response to Patrick Kinsella)OK I have sat back and read all the Above, I have to agree with many points made.... especially the one about the Hardware doing all the work !!!
Neigbours with another antenna,
Bad signal to begin with.
Resetting the Base
However, the Fact is clear to me and many other posts.
After installing Tiger we all see worse Performance, including network Hangs.
I have, since my First post on this Thread, downgraded 2 of my Laptops at the office to Panther, due to this Airport issue, Printing, and many other show stoppers...
Guess what, Airport Works fine, as before, Now I can print to ALL my Office printers, Preview displays both Little and Big-endian Tiff attachments and files. Backups started to work again, a number of other Apps also work again.
So for the past few weeks No Support calls from my users, and I even hurd the users telling the other Users that the IT team actually Upgraded there Laptops to Panther. Irony!!
Go FIGURE !!!!...
Apple are you Listening...
Currently Being ModeratedJul 21, 2005 8:08 AM (in response to Yorkie)I have to take exception to the statement
"After installing Tiger we all see worse Performance"
We have Tiger installed all around and the network performance, if it is different at all, is better on all machinces. No hangs either.
This is NOT a global problem. I don't know what it is, but it is not global.
Currently Being ModeratedJul 21, 2005 8:30 AM (in response to joelzenny)This issue is NOT ISOLATED TO TIGER!!!!!!!!!!!
I have never had Tiger on any of my three machines (500mhz iMac, DP500 G4, and an iBook) , as soon as I upgraded to 10.3.9 ALL AIRPORT RELIABILITY VANISHED!!!!!!! I was running airport cards in the machines and sending the WiFi through an SMC Barricade in ROCK SOLID fashion for well over two years.
I am now running Netgear Powerline Ethernet connected to the Barricade in order to distribute connectivity throughout my house.
Currently Being ModeratedJul 31, 2005 9:54 AM (in response to joelzenny)I was having similar issues. I called Apple tech support. They had me do a hard reset of my base station. I had been doing base station power-downs, but that was only a temporary fix. After about a day I would again start having a bad connection.
Since doing the hard reset, I have had no problems:
Currently Being ModeratedOct 14, 2005 8:26 AM (in response to John Schmidt)I'm an Apple newbie & having same problems as described above: connectivity-icon-thingy fluctuates from full strength to 1 bar. Sometimes slow, sometimes quickly. "Interference Robustness" appears to make no differernce. Will Apple ever address this? A huge part of my reason for switching was that I thought Apple would admit to and solve problems quickly. It seems that there is not even acknowledgement of a problem that has been repeatedly reported.
Currently Being ModeratedOct 14, 2005 7:37 PM (in response to Don the Planter)the problem MAY not be Apple's. Wireless connectivity of any kind suffers from some common problems due to the user's local environment.
see http://www.girr.org/macstuff/airport_linktips.html for some details
If there are hardware problems, Apple will address them on a case by case basis. AppleCare works really well here.