The F harmonic minor scale has 7 notes: F – G – A♭ – B♭ – C – D♭ – E. The harmonic minor is the natural minor with its 7th raised a half step. The gap of three frets between the ♭6 and the 7 gives it its exotic, classical sound, and the raised 7th makes the V chord major, so it pulls strongly back home.
Compared with the F major scale it has ♭3 (A♭ instead of A), ♭6 (D♭ instead of D).
The explorer above is set to F harmonic minor: the whole neck is mapped, and you can zoom into any of its 7 positions, change the labels to degrees or fingers, and hear it up, down and in patterns.