Jay, >Did you use the built in SR cal routine? Not the automatic routine. Did it manually by feeding in 1kHz from my freq std, and entering the numbers in the "Audio Settings" page. Works. Here is a screen shot of the NE US chain as seen in the daytime, with the loop aimed away from Nantucket: http://webpages.charter.net/w1tag/files/NELoran.jpg I hope the identifiers are correct. John A.