Did the tower show a green light?
Having spent many years working in a control tower, I can't recall a single occasion when the ADC didn't leap for the 'tower lamp' to show a green light to the aircraft on final, when 'radio problems' like this occasion, were a factor.
I was talking to a (former) pilot friend yesterday (don't mention '89), and he told me under these conditions, providing the runway was clear, he would always land; which I thought was reasonable action. However he wouldn't have even thought to glance at the tower to see if a green light was displayed.
Did the pilot look?
Duff