Since this is a hobby broadcasting station it is neither commercial, nor non-commercial.
There is no prohibition to be commercial-free under FCC Part 15 hobby broadcasting rules
Most advertising you hear on PHVERN will be embedded ads included in the programming and beyond the control, or pecuniary gain of PHVERN.
Some ads are included for their historical broadcast value; a history lesson.
Some ads will be strictly public service, such as Ad Council, other government, non-profit, or local Saint Louis featured events.
On occasion PHVERN will feature a courtesy ad for a local small business that fit within the confines of Old North Saint Louis, or very close by.