yes, if you increase the power over the default, it will work for a short time, and then the card will be damaged.
Hi to all, sorry if I resume an old discussion....
In many sites there were 433MHz and 2,4GHz, so sometimes I completely made new installation, other times I had to use old cables.
In this way I calculate attenuation of cables and connectors and I correct "antenna gain" value in RouterOS.
As result, with low gain antennas, if I set "default" in tx power settings (using regulatory domain in CM9 or R52 cards), I got wireless card working at maximum power for lower rates (1 or 6 MB).
Now I got several radios not working good: using snooper I see a lot of free channels, and received signal is about 10dB lower than installation values.
I changed radio and I put Metal 5 for test: I receive correct expected signal power and I see much more AP using snooper.
So my doubt is:
1) if I use wireless cards at maximum power (in "default" mode), will I damage them?
2) if "default" maximum power is (x example) 17 dB at minimum rate, how much should I decrease power to work in "safe" mode? 2-3 dB is enough?