How close to the upper edge of a band's phone segment should your displayed carrier frequency be when using 3 kHz wide USB?
Why With upper sideband, your transmitted energy sits above the displayed carrier frequency, so a 3 kHz wide USB signal occupies roughly carrier to carrier+3 kHz. To keep every bit of that occupied bandwidth inside the phone segment, the displayed carrier must sit at least 3 kHz below the upper edge. You are responsible for the whole emission, not just the dial reading, under the band edge requirements of Part 97.
Watch out Putting the carrier 1 kHz below the edge only works for a signal 1 kHz wide, so a normal 3 kHz voice signal would spill 2 kHz outside the segment; placing the carrier above the edge puts the whole signal out of band.
USB builds upward: back off the dial by your full bandwidth, 3 kHz wide means 3 kHz below the top edge.