many thanks do You know where the are located, heard later on also "TO" Uwe, DK1KQ strong audible at 16 KHz " T M " Hi Uwe, these "T"s and "M"s are actually pulses of the russian ALPHA VLF navigation
Uwe, there is a lot of VLF information on www.vlf.it. You can find information on the Alpha system on www.vlf.it/alphatrond/alpha.htm. 73 Johan SM6LKM Uwe Wensauer skrev: many thanks do You know wher
Hallo Johan, of coarse I know RSD-20 (Alpha) but what is causing CW T; TM and TO ? Uwe, DK1KQ Uwe, there is a lot of VLF information on www.vlf.it. You can find information on the Alpha system on www
Hallo Jim and Group, thanks for Your good explanation. Today, to my surprise, new signal heard and recorded. May be new or other ? 3 dashes. If I set my RX to 12,67 KHz and BFO to +1000Hz I hear at 1
Dear Uwe, I think, the "T", "M", "O" are different stations with these calls. They are transmitting at different times, so you can hear the different calls. The fieldstrength is not the same for the
Hi Uwe, There may be up to 7 "Alpha" frequencies active at the same time. I have a screenshot of them if you are interested, recorded several months ago. Some of them can be seen on the Spectrum Lab
Hi Walter, In fact, they don't send Morse. The pulse durations are always the same (no callsigns). See previous post. (I spent some time on RDF'ing on VLF using DF6NM's principle, the different "dots
