Possibly not a recommendation, but this is what I did once in the case of apparent radio failure...
I was flying back from Paris to Le Touquet in an R22 helicopter, as a PPL(H), with another low hours helicopter pilot. We were party of a large group who'd gone to Paris for the weekend, but we were the first helicopter approaching Le Touquet. I called them...no response. I tried several times as we got closer and closer. I could hear everyone else on the radio, so it made little sense. Thinking I had transmission failure, but aware that I might not, I called again and gave my position, and said I intended to come in and land, but would approach low level so as to keep well out of the way of their fixed-wing traffic.
I did this safely, landed and paid the landing fee, and no-one asked to see me so I didn't ask to see them. It turned out that earlier in the day the Tower had called a Brit pilot who was over the Channel and asked him to return to the field as there was a problem with his flight plan, and been told to **** off. So he'd refused to talk to any more Brits!!! After I called, he started talking to Brits, so the rest of the group had no problems.
The CFI told me that what I did was safe, but actually illegal in Class D airspace. Since I was in a helicopter, I probably should have landed in a field and phoned the Tower. But I got no official reprimands.
No moral to this story, except maybe to say that a wrong decision is not a disaster so long as it's a safe one.