Well, so far the consensus is it's coming from the rear...could be but I'd swear on a stack of bibles it's the right front. Pads seem fine..car brakes well and no noise, or at least additional noise. You guys maybe on to something with the suggestion it's the back brakes...my emergency recently stopped working...dunno why but it seems the noise started soon after that. Strange thing is it comes and goes, or maybe I just can't hear at at 180 kph
Thanks for all the suggestions - I'll have the back looked at (garage is full of junk and it's still too cold ).