I have recently purchased a Airport Extreme to replace my BT Home Hub 3 on BT Infinity. This was in an effort to try and improve the performance of Apple TV due to the 5ghz band support. I had no real problems in replacing the router and configuration. The issue i'm having is that the router is performing worse in relation to the BT home hub when accessing wirelessly using my iphone 4. I used to be able to connect in my bedroom just with BT HH3 (This is 2 floors above the router placement, we're only talking about 20 feet straight up) but using AEx 802.11g/b/n nothing.
I realise that a number of factors can contribute to the perfromance of a wireless signal ie contruction material, other sources of interference (cordless phones) I have even moved our cordless phone which did used to sit next to the BT HH3. I would have expected the range of the AEx to outperform an ISP's standard equipment.
I have used iStumbler to check out all the wireless signals in the area to see if there are any conflicts on channel and have chosen channel 11 which isn't being used by any of my neighbours. Getting 36% - 40% signal with only 9% noise on the 2.4ghz Band which i would have thought to be pretty typical on iMac which is the floor above router placement, but not directly above) I have tried several other channels to see if there was any improvement.
I must say AppleTV is performing brilliantly using the 5ghz band only so that was a success and iMac can use it too.
Obviously iphones don't support that band.
I don't want to have to fork out another £78 for an Airport Express to extend the network when i would have expected this to be sufficient. Out of ideas any suggestions???