Hi, I consider buying for a friend the Hantek 6254EU oscilloscope.

He owns an HP54520A but it's PSU has broken down. He used it for HF work (30MHz max) and he mainly used the FFT function (spectrum analysis) to measure harmonics of HF fundamentals.
So he needs to do the same thing with this new one.

His old scope FFT did not have enough resolution above 3-4MHz, to distinguish signals 1KHz apart (eg a DSB signal or Two tone IMD measurements)

Now, my question is, will he be able to use the FFT of this USB scope to do that thing on HF (1-30MHZ)?