[1oooqooq]

that point is completely bogus since hardware oscillators limit the range. and even multi range devices let the driver decide the region, so even with closed source you can already offend fcc regulations (pro tip set your wifi region to cuba for extra channels)

[eqvinox]

Hardware oscillators don't limit anything, PLL ranges and amplifier band characteristics do, and they have soft falloffs. Please stop making claims you have little knowledge around.

(no, a PLL is not considered a "hardware oscillator" in any practical sense by anyone working in this area, that's "tomatoes in a fruit salad" category)