I do have a RF probe. One that I made plus one that is a manufactured version.?
I am changing the connection on my VTVM from the 1/4 inch jack to a bnc this evening.
That will help also. The commercial probe has a bnc already and really good test ends for use in the radio.
My DIY version works in a pinch but prefer the bnc connection over the 1/4 phone jack.