I have a wired connection of about 36Mb/s, but my wireless speed is max at about 18-19Mb/s. I have a WRT54G-TM (T-Mobile, 802.11G) router with DD-WRT firmware – I've upgraded it to latest build. Done some settings changes:
- changed channel – 13
- wireless network mode – G-only
- ACK Timing – 0
- Fragmentation Threshold and RTS Threshold – 2304
- Basic Rate – All
Signal/Noise ratio: -46/-94, signal quality ~50-60%. Is this normal with G networks?
Edit: The AP is located about 2 meters from laptop, no walls or metal objects, but its next to a TV. I've done a channel scan (had problems locating it, go to "Status -> Wireless -> Site survey" – lame naming) and everybody else is on channels 1 and 6. Switched to channel 11 but it didn't help. As for trasmit power I got best results with default 71mw. The antenna might be a factor, I'm using the default 2 antennas.
[edit] Upgraded my AP to a 802.11N capable router (TP-LINK TL-WR841N) and now my speeds are always maxed. I recommend everyone this solution.
Best Answer
Sounds unsurprising. There are lots of things that can affect the performance of the wifi AP.
Including:
In DDWRT there is a menu option that allows you to "scan" for other devices. Use that to determine the presence of other Wifi routers that the AP is seeing. Choose the quietest channel and retest.
You're getting plenty of signal too so it's most likely some sort of interference.
By the way, channels above 11 are not commonly used. And I once tried channel 14 but found it was limited to something like 5 or 10MHz of bandwidth and did find documentation on this but haven't located that yet. So do try other channels.