LF: Eu LORAN lines near 137700

[MarkusVester@aol.com]

Dear Dexter and Group,

there are five relevant LORAN C chains in Europe. Their spectral lines are at multiples of 100000 Hz / 2 / GRI; here is a list of frequencies between 137680 and 137720 Hz. The lines which look prominent in Hartmut's shot are indicated by an asterisk, but the relative amplitudes vary a lot with the location of the receiver and changing skywave propagation.

GRI 6731 (Lessay, Soustons, Rugby, Sylt):
 683.8508*, 691.2791, 698.7074*, 706.1357*, 713.5640

GRI 7499 (Sylt, Lessay, Vaerlandet):
 685.0247*, 691.6923, 698.3599*, 705.0275*, 711.6951*, 718.3627

GRI 9007 (Ejde, Jan Mayen, Bo, Vaerlandet):
 681.8031, 687.3543, 692.9055, 698.4567, 704.0079, 709.5591, 715.1103

GRI 7001 (Bo, Jan Mayen, Berlevag):
 680.3314, 687.4732, 694.6150, 701.7568, 708.8986, 716.0404
 
GRI 8000 (Bryansk, Petrozavodsk, Slonim, Simferopol, Syzran Karachev):
 681.25, 687.5, 693.75, 700.00, 706.25, 712.5, 718.75

The Sylt station (and probably the 7499 chain with it) was announced to close down tomorrow, Feb. 15, but the shutdown had been postponed two times already.

73 and best wishes
Markus, DF6NM