I agree with Mal, some tests from the US eastcoast in QRSS 1 or 3 would be interesting. For this should a second T/A window be used. Probably in the 137.500-600 range. Near 137.700 as Dex used late
Dex and the list, I looked at John Andrew's list of Loran Lines and there are a number in the area of 137.701: 137,698.145 5930 - Canadian East Coast 137,700.312 9610 - South Central U.S. 137,700.501
Warren, attached a screenshot. 137.699 is not a good choice. 73 Hartmut Dex and the list, I looked at John Andrew's list of Loran Lines and there are a number in the area of 137.701: 137,698.145 5930