Hello, i have a great problem with RB-532(L4,v.3.6) and 2 R52 installed . I try search in forum but i don´t see any answer for this problem.
the value for snr in wlan1 is -negative all the time and de RSSI change quickly a lot dBm(example: -60 to -80dBm), ccq is low over 20 to 50% and finally the noise is always -68 to -75dBm.
i don´t know what is the problem because change the connector,cables(LMR-400),etc…but persist. The clients can connect and surf in internet but this values are very wrong and i would like fix it.
in wlan2 everything is ok, rssi and snr is stable and work fine.
One question: to try change the Antenna mode: “antenna a” to “antenna b” with this the noise go up to -98dBm but any client can not connect,wlan2 and wlan1 must be in “antenna a mode”?
thank for reply,
There are different frequencies to avoid overlaps and not interferncias,
I tried different channels, enable DFS but can not find the solution.
I have an 1W hyperlink amplifier , I have fallen power to the card until 16dBm to see if that was the problem but it persists.
Now this morning the snr for many clients mis -10 until -20 when they are near of base station(about 200m to 800m)
Please help with this because the performance is bad.
this morning I changed the mini-pci R52 by another R52 if defective but still was doing the same thing (SNR -x), after he removed the power amplifier and grown up 19dBm but does not change.
Finally he removed the R52 and he installed a Compex (200mW) without the amplifier and to my surprise, it works!, The value of SNR now and this is good from 16 to 39dBm! The CCQ is 90% and noise of -98!
By connecting the amplifier and lowering the power of 23dBm to 19dBm, the signal and returned to the SNR values have very bad!
I am very happy to have finally solved this problem!
Why values with the R52 remained as bad removing the amplifier and the Compex not? Will power alone?
Hi ,
Now that I have two mini-PCI 200mW installed in RB-532 and is powered by an adapter 12v 1A, there is a need to increase power to 18v, for example? or in which cases it is necessary to use greater powers?
thanks in advance.
You are fine, as long as your cable run is not too long. The RB532 only uses 2-4W and your radios under 3W each.
If your cable is long, use 18V. If you add more radios, get a 2A POE injector.
Check the specs for your cards for their power usage info.
Also, be very careful with the output power settings for your radios. It’s best to keep them on “default” unless you really know what you are doing.
More power != better. You must use the least power possible that maintains a stable link.
Ok, i have 12m. (aprox.) LMR-400 cable since rb-532 to the antenna on top the tower, now rssi, noise and snr is good, but i will install a rb-502 daugther for 5,3Ghz sector, need go up to 18v 2A, yes?
Note: in my country(spain) every installer that I know uses amplificador, this point confuse me , now i know that this solution is very poor for performance(thx this forum)! I am visiting this forum many weeks reading continuosly every post but there are things that escape for me
thx.
regards
sorry, when i said “cable” refer to coaxial LMR-400, for power cable is very short…about 30cm±, no is good idea install the daugther in 5,3Ghz and with 2 radios in 2.4Ghz running? this solution can give noise o similar?
