I’m just curious which country, offhand, has the highest power limits (EIRP) for either 2.4GhZ or 5GHz unlicensed Wi-Fi bands?
Is it the USA?
“no country” or if you leave this window and go into the wireless advanced settings, you can switch to mode “superchannel” and overdrive the card until it burns, if you so please 
It is not usual to see mikrotik representative to advise a user how to burn a device… Are the sales figures falling down so they need to be boosted back by those who damaged their equipment?
Hahaha …
Jarda, I don’t know how you missed this, but since RouterOS exists, it has been MikroTik ideology to allow the user to adjust whatever setting he wants. This causes many to say “RouterOS is very complicated”, but in reality we just give you a lot of freedom.
Is there a risk of burning the radio when you set it to the highest power setting the config allows?
(assuming a reasonably matched antenna is connected, of course)
If so, what would be the safe level?
As radio amateurs we are allowed to use much more power than unlicensed users (within our bands),
but of course we do not want to burn our hardware.
Usually the “Default” setting runs at maximum set in EEPROM and the manual settings should be for lowering the values, not increasing.
So that EEPROM default is a hardware safe limit, not a regulation limit?
I have seen (if I remember well) that it sets power to 17dBm and the max settable is like 23 or 27 dBm, so
in that case 17dBm would be the safe limit for the hardware?
(this of course means the EIRP is still above the 30dBm unlicensed limit with many antennas)
EEPROM default is used when “no country” is set and tx-power is set to “default”. When you use some country, the setting is lowered according to country limits. You also need to take into account the antenna gain setting. It lowers your TX power so that the total radiated (EIRP) power is within limits.
I surely haven’t missed that, because it is the reason why I appreciate and defend the way of life with mikrotik. You know that.
I know you know it.
This is the reason why the user can burn his card if he wants to
I fully know about country regulations for unlicenced WiFi, but I was alerted by your “burn the routerboard” message..
As a licensed radio amateur, I can legally operate with 100W transmitter power in the 5.650 - 5.850 MHz band, which
is also covered by 5 GHz WiFi equipment (channel 130-170). EIRP is not even a parameter in that, so I can easily
make many kilowatts EIRP. (like any other licensed radio amateur)
What is interesting is not what the “country limit” is but what the safe limit for the devices is, and if this is lower than
the settable power. When I understand correctly, I should set “no country” and “default” and then see what the indicated
power is, and not go higher than that. Is that correct?
Rest assured, especially since this radio is currently hooked up as a Wi-Fi adapter card in a desktop PC only 40 feet from the SOHO router, that I have no intention of increasing the transmitter power limits!
- Basic newbie questions about setting up an RB411/R52n-M as a WiFi card in a desktop computer at home
Thank you normis for your answer, where I was unaware of the “no country” option, so I was just curious which country was the “best” country (for EIRP purposes).
How does this sound as a modified question, if someone (not me!) wants to increase the power output?
Q: What country and tx-power setting will give me maximum power output?
A: Set the country to “no country” & set the tx-power to “default” which will cause the radio to emit the maximum power allowed based on the EEPROM firmware settings.
Q: Will I get that maximum power with any particular country setting other than “no country”?
A: No. Any country setting other than “no country” will result in lower transmit power for two reasons:
a. There is no country that allows as much power output as does the “no country” and tx-power = default setting.
b. For any specific country, in order to keep total radiated EIRP within the specified country limits, your tx-power will be lowered based on your antenna gain settings.
When I understand correctly, I should set “no country” and “default” and then see what the indicated
power is, and not go higher than that. Is that correct?
Correction to my incorrect post above. In the last few years, RouterOS will actually ignore any setting above the EEPROM safe limit, so with MikroTik made devices, you can’t accidentally set power too high and damage them.
Thanks! I think I had seen already that the power does not increase above some figure but I had blamed that on saturation of the final amp.
I’m confused, so can you just clarify that this sentence above about going into “superchannel mode” is the setting you are referring to that a previous company (before Mikrotik?) allows to over ride the EEPROM safe transmit power limits but that Mikrotik never allowed?
As a addition to this question i would like to add, that while no country set and superchannel makes it send at “max power”, how can you know what actual power is being used?
Also how can i specifically get it to set an ap to work at frequency 5740 - and at 4W EIRP?
Dear Friends, Mikrotik staff !
I would like to kindly ask you for assistance:
Im struggling with my hap ac3 since changed driver to “wifiwave2” ,however the apartment we live is really not big (80m2), divided only to two bigger rooms, didnt have any huge or massive obstacles (Ytong), and the WiFi frequencies are also not crowded (maybe 4 SSIDis visible).
Im actually maximum 10m from my router (bathroom), and my phone (iPhone) is repeatly, every couple of minutes connecting and disconnecting = switching between 2.4Ghz and 5Ghz. Even if it sounds absolutely “as a joke”, i think this is caused by lowered Transmit power of antennas in new driver. If i go closer to the router, everything works without problems. I have used the generic WiFi driver with “no country set” option, where the “power-distance” of WiFi was acceptable. But in wifiwave2 driver isnt option like this listed ! Since i have 1Gbps link speed from provider, the reached 450Mbps-500Mbps wifiwave2 speeds near router (compared to generic 250-320Mbps) makes really sense for me. But i cannot accept the upper mentioned status. I dont think this is config question. The configuration is sadly really very simple and basic, and it doesnt matter what im doing if the “power” isnt enough to cover this places/edges with specific “Slovakia” country settings.
Is here please any workaround, how to deal with this ?
Thank you very much !
Greetings
Please make a new topic, why are you asking in an existing topic?
Thank you for your reply. It is actually same question with some updates. I wouldnt like to make forum flooded with same topics
The end device is performing the roaming decision, you could check the FT configuration on the wireless interfaces, perhaps that could make the switch between both interfaces more seamless.