Hello, Then NRD-525 can be set to display 1.5 offset or not. It is described in section 5.5 of the owners manual, page 19. MEMO + "0" will set the USB/LSB offset. If this does not work, check the operation of the other user defined settings to verify the MEMO button is operational. Next, enter a frequency utilizing "0" to ensure the "0" button works. Best reagards, Paul Bigelow