Only N=2 but mine have worked great for the 2 meter and FRS/GMRS bands, which is what one is probably going to use while in the back country.

Definitely don't try 27 MHZ, or perhaps outside of the above bands at all.

Are these Yaesu, Motorola, or Icom quality? No, but they're $25.

Yeah I have 4 that are great 2m/70cm, which is what the included antennas are optimized for. Even better with a cheap Nagoya antenna and non-stock firmware.

Unfortunately people don’t realize that even if you install a firmware that allows down to 11m, even connected to a $1200 base antenna the power output will be in the milliwatt range while throwing off on harmonics.

There’s also the case of hardware inconsistency and fakes. When I hook up 4 of the included antennas to my VNA there’s pretty big variance, and I recently tested a fake Nagoya that was clearly tuned for air band and not 70cm/2m as advertised.

Why? What happens?

The Qansheng's that I've tested have been fine, first harmonic down 44dB, which is OK for the FCC.

However, if you hack the firmware and transmit outside the bands the radio's RF is designed to transmit on, then you will probably see all sorts of spectral weirdness.

Sure, of course, that's to be expected.

I have one too, and it gives off tons of spurious emissions (RF interference).

I pretty much only use it for experimentation and receive.

Did you actually see the spurious emissions on a spectrum analyser?

The old Baofengs had that problem, not Quansheng which are actually clean and the harmonics are within FCC specs.

Another issue is people were “testing” them using an RTLSDR which very easily gets overloaded and shows harmonics where there are none. Even my local FM station shows up on my SDR at frequencies I know they’re not actually transmitting on.

I admit that I have not. But I have used it near other equipment and it causes interference. My Kenwood HT does not.

Ah, ouch. I have two Baofengs as well, I think they're a bit better, but probably not too much better.