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  1. #1


    Member Since
    Feb 07, 2010
    Posts
    2
    Question Slow data transfer with Time Capsule on 802.11n ?
    Hi,

    Actually, I don't know where to start. But let's explain my setup first:

    My iMac (wired) and AppleTV (wireless) are connected to the Time Capsule (802.11n, 5Ghz)

    My girlfriend's MacBook and 2 x iPhone 2G's (wireless) are connected to an Airport Extreme Base station (802.11b/g compatible).

    The Time Capsule and AEBS are connected and show two different networks.

    Now the problem:

    When I copy files from e.g. the iMac to the MacBook or to the Apple TV, it's very slow. I've used scp to copy a 200 mb file and it took about 1.20 minutes (at 2.5MB/s). I've did the same when the iMac was connected over wireless and it took about 3.45 to 4.30 minutes (at 1.0MB/s).

    I'm not sure if this IS slow, but it certainly feels like it. 802.11n should be around 100 Mb/s in practice and 802.11b/g around 20-25 Mb/s.

    By the way: downloading from the Internet is excellent, I get the full download/upload speed my provider offers for my subscription.

    Second, I added the signal strength/noise levels for the Time Capsule attached devices. They vary around -68Db signal, -90Db noise.

    The question is: are these levels normal ? What should be higher or lower ?

    Thanks in advance !

    Rutger

  2. #2

    Collin Bl's Avatar
    Member Since
    Apr 07, 2009
    Location
    Napier NZ
    Posts
    3,297
    Specs:
    27 iMac i5, MBP 13 & iMac 20, 2TB dual TC, AppleTV, iPh4S
    My iMac (wired) and AppleTV (wireless) are connected to the Time Capsule (802.11n, 5Ghz)

    My girlfriend's MacBook and 2 x iPhone 2G's (wireless) are connected to an Airport Extreme Base station (802.11b/g compatible).

    The Time Capsule and AEBS are connected and show two different networks.
    are you using this set up to give 11g and 11n? Is the TC Dual antenna model?

  3. #3


    Member Since
    Feb 07, 2010
    Posts
    2
    The TC is on 802.11n only and it is the original model. So no dual antenna.

    The other base station is to configured to 802.11b/g.

  4. #4

    Collin Bl's Avatar
    Member Since
    Apr 07, 2009
    Location
    Napier NZ
    Posts
    3,297
    Specs:
    27 iMac i5, MBP 13 & iMac 20, 2TB dual TC, AppleTV, iPh4S
    Why not have g/f macbook on 11n as well.
    For movies and Apple TV
    When I copy files from e.g. the iMac to the MacBook or to the Apple TV, it's very slow
    are you adding movies while in iTunes?

    If you have a number of big files to shift you will do it more quickly using Firewire 800.
    This my results form recent transfer;
    Copying 52,000 files and 58 GB USB 2.0 = 33 hour
    Using Firewire 800 for same - 44 minutes

  5. #5

    rzj90059's Avatar
    Member Since
    Jun 03, 2009
    Posts
    153
    Specs:
    uMBP 2.4/4GB/250GB; iPhone 3GS
    Quote Originally Posted by rlvdijk View Post
    Hi,

    Actually, I don't know where to start. But let's explain my setup first:

    My iMac (wired) and AppleTV (wireless) are connected to the Time Capsule (802.11n, 5Ghz)

    My girlfriend's MacBook and 2 x iPhone 2G's (wireless) are connected to an Airport Extreme Base station (802.11b/g compatible).

    The Time Capsule and AEBS are connected and show two different networks.

    Now the problem:

    When I copy files from e.g. the iMac to the MacBook or to the Apple TV, it's very slow. I've used scp to copy a 200 mb file and it took about 1.20 minutes (at 2.5MB/s). I've did the same when the iMac was connected over wireless and it took about 3.45 to 4.30 minutes (at 1.0MB/s).

    I'm not sure if this IS slow, but it certainly feels like it. 802.11n should be around 100 Mb/s in practice and 802.11b/g around 20-25 Mb/s.

    By the way: downloading from the Internet is excellent, I get the full download/upload speed my provider offers for my subscription.

    Second, I added the signal strength/noise levels for the Time Capsule attached devices. They vary around -68Db signal, -90Db noise.

    The question is: are these levels normal ? What should be higher or lower ?

    Thanks in advance !

    Rutger
    You will never see those speeds at all. I think at most it would be around 20-40 Mb/s with 802.11n.
    Tech Inventory:
    uMBP 15.4" 2.4 Ghz/4GB RAM/250 GB, uMBP 13.3" 2.53 Ghz/4GB RAM/500 GB, iPhone 4 (Black), iPhone 3GS (Black)

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