I was home sick today, so I was listening to V. Nigeria on 15,120 KHz
from about 2000 to 2100z. A potent signal to say the least, would
have been easy armchair copy except for one thing - their audio is
terrible. The sound is either muffled, or overmodulated, or the high
tones are omitted, or something, but the distortion makes an otherwise
great African signal almost unlistenable much of the time. Any ideas
what their problem might be?

Thanks,
Bruce Jensen