Hello All,
I have an existing installation of a point-to-point WDS bridge. Both sites have 2.4GHz dish antennas (about 25dBi each) driven by Linksys WRT54GL accesspoints. (Broadcom radio onboard) Transmit power set to 100mW, Signal to Noise Rate is about 19-26dB. Distance is about 1.4km/0,9miles. The link quality is near to perfect at 802.11g mode, 36Mbit/sec. Real transfer rate is about the half, about 18Mbit/sec, which looks good.
Now, I want to replace the good old WRT54GL bricks to Mikrotik/Routerboard sets.
I bought 411AH boards with R52nM wireless cards. Documentation says R52nM has similar specifications like WRT54GL. (23dBm with two antennas, 21dBm with single antenna) so I expected the same or nearly the same link quality with these devices.
Actually, it’s a complete failure. The link is unstable at 1.0 - 6.0Mbits/sec, with packet loss about 50-80%. I’ve tried almost all settings possible:
- TX Power from 17dBm to 23dBm
- Wireless modes 802.11g and 802.11n
- Bandwidth set to 20MHz
- TX/RX Chain set to 0, antenna connected to proper (left) connector.
- Channel: from 1 to 14. (WRT54GLs work great on Channel 13)
- …
All ideas are welcome.
