For now I seemed to have traced the problem in my radio to the mic. I am still using the hand mic and waiting to see if the modulation drops again. In the mean time I am looking at ideas for a new mic. I have a galaxy 2547 base that I would be using the mic with. I am mostly interested in desk mikes but a good hand mic would get the job done. If I understand corectly a d-104 or similar mike won't sound right on my radio correct? I was looking at the galaxy desk mic or the astatic 878. For hand mics maybe the Astatic d-104mb6 or something similar. By the way I mostly use Am locally but I do shoot skip on ssb. I am wanting something that will sound go on both. Anyone have ideas?