Mike, you could be correct. This morning I seem to have a little distortion in the NB which I did not notice before. It's not bad, but a little is there. I may go back to 4.50 just to check it out. Toby W4CAk I just got it tonight. I have not had much chance to compare but the NB in 4.50 is much better! A curious unexpected side effect! Mike W0MU