I spent a lot of time to learn about wifi channels, country restrictions, channel transmission power, all because of an internet article that claimed I could improve the wifi signal on an Apple Airport router by making it use channels 149 and up. I want to improve my signal on the 5GHz bands.
After wasting all this time with experimentations with different routers I found routerchart.com which simply states the transmission power of my routers, so I understood that it doesn't matter the country regulations and channel specifications because the router makers may choose to simply power them down, so I'm capped at 15dBm with my Airport Express and 20dBm for my D-Link DIR-810L - which matches my experimentations with Airport Utility Wi-Fi Scan.
I'm about to change internet provider and I have the option to get a Huawei HG659 for "free". I couldn't find its transmission power, can anyone help me find out this information?
I wonder if I should try it or go try to find something stronger. I don't want to spend much money. Can someone please help me find out what I do next?