Hi I have a link over 2 Km with -25 to -30 dbm. In the status field(Tx/RX Rate) in wireless of the winbox, i have standing a 54 Mbps but I get only 2 Mbps through it. What do i do wrong. Thanks for every help!

with best regards
hkaiser

Hehe, it's very strange and again your signal on 2km is very-very good!
You didn't tell us is it g or a? Anyhow signal is too good for 2km!!!
What antennas you use?
What cards you're using?
If it's g, my guess is that you are using boosters and noise is making you a problem.
You said that signal is -25 to -30 which should not differ so much, it should remain stady with -1 up or down not 5.
Cheers m8

you should also post your configuration

So I updated to 2.9.12 and changed a lot in configuration. Now I get 15 Mbps out of the link, but not more. I can see now that the link has a signal noise of 58 db. I am using Mikrotik parabolic dishes with 30 dbi and 5m antenna cable. The Signal going up and down slowy.

My configuration on these router is:

0 R name="wlan1" mtu=1500 mac-address=00:0B:6B:35:E3:86 arp=enabled
disable-running-check=no interface-type=Atheros AR5213
radio-name="000B6B35E386" mode=station ssid="MikroTik" area=""
frequency-mode=superchannel country=no_country_set antenna-gain=0
frequency=5450 band=5ghz scan-list=default,5450 rate-set=default
supported-rates-b=1Mbps,2Mbps,5.5Mbps,11Mbps
supported-rates-a/g=24Mbps,36Mbps,48Mbps,54Mbps
basic-rates-b=1Mbps,2Mbps,5.5Mbps,11Mbps
basic-rates-a/g=24Mbps,36Mbps,48Mbps,54Mbps max-station-count=2007
ack-timeout=dynamic tx-power-mode=default noise-floor-threshold=default
periodic-calibration=default periodic-calibration-interval=60
burst-time=disabled dfs-mode=none antenna-mode=ant-a wds-mode=disabled
wds-default-bridge=none wds-default-cost=100 wds-cost-range=50-150
wds-ignore-ssid=no update-stats-interval=disabled
default-authentication=yes default-forwarding=yes default-ap-tx-limit=0
default-client-tx-limit=0 hide-ssid=no security-profile=default
disconnect-timeout=3s on-fail-retry-time=100ms preamble-mode=short
compression=yes allow-sharedkey=no

second router:

0 R name="wlan1" mtu=1500 mac-address=00:0B:6B:35:E5:75 arp=enabled
disable-running-check=no interface-type=Atheros AR5213
radio-name="000B6B35E575" mode=bridge ssid="MikroTik" area=""
frequency-mode=superchannel country=no_country_set antenna-gain=0
frequency=5450 band=5ghz scan-list=default,5450 rate-set=default
supported-rates-b=1Mbps,2Mbps,5.5Mbps,11Mbps
supported-rates-a/g=6Mbps,9Mbps,12Mbps,18Mbps,24Mbps,36Mbps,48Mbps,
54Mbps
basic-rates-b=1Mbps basic-rates-a/g=6Mbps max-station-count=1
ack-timeout=dynamic tx-power-mode=default noise-floor-threshold=default
periodic-calibration=default periodic-calibration-interval=60
burst-time=disabled dfs-mode=none antenna-mode=ant-a wds-mode=disabled
wds-default-bridge=none wds-default-cost=100 wds-cost-range=50-150
wds-ignore-ssid=no update-stats-interval=disabled
default-authentication=yes default-forwarding=yes default-ap-tx-limit=0
default-client-tx-limit=0 hide-ssid=no security-profile=default
disconnect-timeout=3s on-fail-retry-time=100ms preamble-mode=short
compression=yes allow-sharedkey=no

nstreme and polling is enabled, frame size is set to dynamic

on both sides are working 3300 Sempron, with 512 MB Ram and with CM9 cards. Please give me some input for this problem.

hkaiser

You should do "/system reset" as you have been changing settings that you know nothing about. Basic-rate should be left at their default.

John