USR8022 router drops radio signal

Discussion in 'Wireless Internet' started by localhost, Jan 2, 2004.

  1. localhost

    localhost Guest

    I have a USR8022 wireless cable router with the latest firmware (4.2),
    WEP encryption enabled, SSID broadcasting disabled, using channel 1
    (factory default = 11)

    The router is positioned on top of my pc, with the right antenna pointing
    downwards. In the pc is a wireless nic (also USR) with the antenna
    pointing up. So they can "see" each other, with a distance of about 20
    cm.
    There is also a notebook, 3m away, also with a wireless USR card.

    Sometimes Windows XP pops up a message that there is no network
    connection, and this on both pcs at the same time. Which means the
    problem is probably the router. Then after a few minutes it is back,
    without intervention from my part.

    This is a relevant copy from my logging.


    vrijdag 02 januari 2004 18:55:57 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 19:00:55 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 19:08:19 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation
    vrijdag 02 januari 2004 19:10:07 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 19:34:21 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 19:44:51 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation
    vrijdag 02 januari 2004 19:46:01 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 19:58:04 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation
    vrijdag 02 januari 2004 19:58:39 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 20:05:11 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation
    vrijdag 02 januari 2004 20:07:29 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 20:16:52 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation
    vrijdag 02 januari 2004 20:17:01 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 20:29:04 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation
    vrijdag 02 januari 2004 20:35:07 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 20:44:50 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation
    vrijdag 02 januari 2004 20:47:15 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 20:52:58 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation
    vrijdag 02 januari 2004 20:59:25 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 21:05:10 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation
    vrijdag 02 januari 2004 21:11:33 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 21:17:22 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation
    vrijdag 02 januari 2004 21:23:43 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 21:29:03 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation
    vrijdag 02 januari 2004 21:41:15 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation
    vrijdag 02 januari 2004 21:44:07 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 21:49:23 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation
    vrijdag 02 januari 2004 23:00:52 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 23:08:11 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation
    vrijdag 02 januari 2004 23:12:36 -- Wireless Station XX-XX-XX-XX-XX-XX
    association
    vrijdag 02 januari 2004 23:18:21 -- Wireless Station XX-XX-XX-XX-XX-XX
    disassociation


    It looks like on average I have 9 minutes connection and then 2 minutes
    disconnection, then 9 minutes connection again, and so on...


    I get no response from USR support at all.
    They have tested the router in the local shop but they found no problem.
    I do not know if they have tested it long enough.
    I have googled the web and the discussion groups, but the only thing I
    found so far, was changing the default channel. Been there, done that,
    didn't work.

    What now?

    Greetings,
     
    localhost, Jan 2, 2004
    #1
    1. Advertisements

  2. localhost

    Niall Guest

    I had a similar problem with an 8054. The disconnections were at one
    point logged as 5 mins, 10 mins, 5 mins, 10 mins etc. I searched
    groups.google.com extensively and as a result turned off the XP
    Wireless Zero service, updated the laptop card drivers etc, nothing
    seemed to make much difference. I did notice that the frequency of
    disconnection seemed to vary according to time of day and that an
    outbreak of very frequent disconnection could apparently be stopped by
    changing channel. Given that I am in a hilltop location where high
    levels of RF seem to be common, my current theory is interference.
    I started at channel 1 and changed channel every time the
    disconnections got bad; I am now at ch. 10 and only getting occasional
    disconnects, most of which are so short that MSN doesn't notice.

    Interesting that it affects both of your clients simultaneously, I had
    wondered about that.
     
    Niall, Jan 3, 2004
    #2
    1. Advertisements

  3. localhost

    localhost Guest

    I have not checked, I presume this is the access point?
    My intervals of 9/2 minutes are not so regular, it's just an average.
    Currently I'm running a syslog daemon to get information over a longer
    period of time (like a few days or weeks), because the logging on the
    router only keeps the last 100 log lines or so.
    So did I.
    Have not done that yet, but I don't believe it will make a difference.
    and I flashed a new firmware version in the router
    Same here
    Dunno, I still need to do more logging. But this may be the case.
    Already tried that. Disconnection is gone after about 1 hour, and then
    it's back.
    I'm on the Plains of Flanders here. I don't think the nuclear power
    plant in Doel, 20km away, will cause much RF interference. Perhaps my
    neighbour's garage opener?
    It's either that or a faulty radio transmitter in the router. Imagine
    one small component that barely makes contact. When current passes, it
    warms up and bends a bit. Result: no more current, no more heating and
    loss of radio signal. Then that component cools and makes contact again.
    Result: radio is back on.
    I used channels 11 (factory default) --> 1 --> 2
    Also interesting: my neighbour across the street has no connection
    problems at all. The distance between our wireless networks is about
    50m, and I can pick up his signal at about 50%. When I loose connection
    in my network, the wireless cards pick up the signal from my neighbour
    and try to connect. Which does not work, because he also has WEP
    encryption. Recently I told him how he could disable the broadcasting of
    his SSID, so that is not a problem any more. Anyway, if the problem were
    RF interference, could I have picked up a signal from someone else? I
    think not, RF interference jams all signals on the same frequency (or
    signal) equally. He is on channel 1 and I was on channel 1. So if I
    can't pick up my own channel 1 (because of RF interference) I couldn't
    pick up his channel 1, could I?
     
    localhost, Jan 4, 2004
    #3
  4. localhost

    Niall Guest

    Access Point/ router, although I don't use the router function.
    I was using Boingo network monitor but I noticed it missed some
    disconnections.
    Sounds similar.
    There are so many possibilities given that it could be harmonic
    interference; cordless phones, baby monitors, cableless burglar
    alarms, industrial telemetry etc etc. Given my job, when I hear
    "Plain" I think wastewater pumping stations which often have radio
    telemetry.
    That certainly points to the AP. One remote possibility is that IIRC
    these devices are supposed to be adaptive i.e. the RF power varies
    according to need, but the function isn't implemented in software. It
    could be that interference is interpreted as a strong return signal
    causing power reduction.

    It's also possible that interference to the return signal is causing
    the AP to retrain in some way; I notice the symptoms I get can be
    reproduced by changing channel in the AP setup, at which point the
    connection drops then restarts on the new channel.

    Also, despite there normally only being about 3M between AP and
    laptop, the signal strength and link quality displays on the laptop
    card monitor software normally sit at 100% but on occasion can be seen
    varying between 90-100%. Given the distance this looks a lot like
    adjacent channel interference causing receiver desensing.
     
    Niall, Jan 4, 2004
    #4
  5. localhost

    prince20 Guest

    i had the same problem. it only works for me if
    SSID broadcasting is enabled. this sucks and i dont
    think there will ever be a newer firmware than 4.2

    ....prince
     
    prince20, Jan 14, 2004
    #5
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.