i need some advice. if someone 500/1000 mi. away is calling 'cq dx' are they calling only non-USA? i've always been a HF dxer and that's the norm. is it the same on 6 mtrs.? what is considered DX? are short CQs the norm because of the QSB? is there a calling freq. on 6 mtr. cw similar to 50.125 for fone? k9il