VLF signals, received by DF6NM April 9-17, 2006

 kHz   colour modulation call   origin

24.0    green    MSK     NAA    USA  Cutler, Maine
23.4    cyan     MSK,car DHO38  DL   Saterland Rhauderfehn
(23.002)green    time    RJHxx  Ru   (beta) various (aliased from 25.0 kHz) 
23.0    grn,red   "      RJHxx  Ru   (beta) various 
(22.902)green     "      RJHxx  Ru   (beta) various (aliased from 25.1 kHz)
22.5    green    (short dashes) Ru?
22.3    red      (single dash)  Ru?
22.1    green    MSK            UK   Anthorn
21.75   yellow   MSK     HWU    Fr   Le Blanc  
21.1    yel,grn  FSK     RDL    Ru   (short) various
20.9    yellow   MSK     HWU    Fr   Rosnay
20.5    yel,grn  FSK     RJxx   Ru   (short) various
20.27   blue     MSK     ICV    It   Is. Tavolara, Sardegna 
19.8    green    MSK     NWC    Aus  North West Cape     
19.6    green    MSK     GBZ    UK   Criggion, Anthorn?
18.9    orange   FSK     RDL?   Ru   (short)
18.5    cyan     tests   DHO?   DL?  (strong directional fading, different antenna than 23.4 kHz?)
18.2    green    MSK     VTX3   Ind  Vijayanarayanam village
18.1  yel,grn,or FSK     RDL,.. Ru
17.9    vio      FSK?    RDL?   Ru?  (possibly local qrm)
16.4    blue     MSK     JXN    Nor  Helgeland, Noviken
15.7    cyan     FSK?                (probably local qrm)
15.625  various  carrier             (local TV line freq)
14.881  yel,red  dashes  RSDN20 Ru   (alpha) Krasnodar, Novosibirsk
12.649  yel,red  dashes    "            "
11.905  yel,red  dashes    "            "