I did not know you knew some Lithuanian LOL. I am doing fine , thank you !So I need to correct you on one thing.....you said nobody read your post about the technical description of the TDF signal. I read it, twice actually :-) I did not comment on it as I am still doing some measurements here trying to get the calculated results to line up with reality. I am trying to get Spectrum Lab running in a certain way so I can get a much higher resolution of the sidebands directly around the main carrier. Anyway, when (and if) I get anything intelligent I will post it.
Also I really liked the last part of your post. I absolutely can relate to you seeing these signals for the first time. I am super happy for you and I know you will keep improving your setup. I do want to share a really quick story about LW reception at my end that somewhat parallels what you are going through.
Several years ago, right after I got my SDR I immediately fell in love with VLF and started to mess with different antennas trying to make my reception better and better of LF signals. I live on flat ground with zero trees other than along my tree line. I do have several towers for VHF and microwave stuff and they are good for suspending wires from so I thought I would see about testing them out on AM and below.
I quickly found I had no trouble seeing the major military MSK transmitters as well as WWVB etc and I started to notice the carriers of the available LWBC stations. I live out in the sticks so noise is not super bad but I still have neighbors about 300-400 feet away and we do have PL noise from HV lines 600' away. I was able to put up 160m and 75m inv-v antennas at 85', rotatable 40m dipoles, 1/4-wave elevated verticals for 40m etc, etc.
I was always able to see those carriers and quickly found out they were AM stations. But no matter which antenna I tried the best I could do was maybe several times during the winters hear some faint whispers on several of the frequencies. Thus started my madness and quest to be able to hear these damn stations .
After 2 years of teasing I made a 35-turn passive, tunable high-Q loop that was maybe 4' on a side. It was just like your Eureka moment when you were able to hear them for the first time.....when I tuned that variable cap just right and pointed the loop to the NE I was actually hearing these stations ! It really got me fired up and made me want more and more. I am currently listening to BBC switching between my main go to vertical antenna and a new active loop that I plan to make rotatable. The loop is about 7' in dia and is KILLER for NDB's and anything on the AM band. It kills my vertical. But on LW the jury is still out and I need to move it as RFI from my house is killing it at too many frequencies of interest. Anyway, if there is any interest I can provide some details of the original PVC 4' multi-turn loop that initially let me hear LWBC.
Well, enough babbling, back to testing antennas. 73 Gedas W8BYA