Do you mean Hertz, milli-Hertz or Mega-Hertz when you say mHz? If mHz, you have nothing to fear. If Hz, 10 or 20 is excellent. 80 is a bit high but quite usable. If MHz, you are not on the same planet as Wayne and Eric<g>. Dan Barker / WG4S / K2 #2456 <snip> WWV at 10 mhz is off by 30 hz and </snip>