Notch Filter; since u have a 7300 like I do
Push the waterfall to get an expanded display of the frequencies
Push the top left button and use the filters ..look like square waves and dial around until you have effectively “notched ” out the offender
Also you can push the screen last 2 digits to get (after 5 seconds or so) a THIRD digit to give you more tighter tuning.
Enjoy
Rick