hey armstrod, thanks, but i am not really a tuna guru, just a tuna-holic. :>) there's folks far more knowledgeable about how fm - and hd-radio - really works, than myself. i suggest anyone who is really interested about fm in general, (and also about hd-radio), check out the fmtunerinfo.com website & its related yahoo tuna forum. as has awreddy been suggested here.
doug s.
doug s.