Hi VLF, This is my first test. Parameters: f = 8270.00332 Hz Start time: 21:30:00 UTC Symbol period: 30 s Characters: 3 CRC bits: 24 Coding 16K21A Duration: 8h,16min Antenna current: 350 mA GL and th
Signal calculator predicts Eb/N0 +6.6 dB here so should be easy copy! Hope for another not-too-noisy night. A few small thunderstorms lurking in Europe tonight - had some lightning here earlier. Good
Copied an obviously correct message in Todmorden, UK. Eb/N0 = +1.8 dB, symbol error rate 40.5%, S/N -30.6 dB in 1Hz. Rank 150 in the list decoder output. Constant reference phase (meaning the frequen
Added to the growing list of amateur achievements at VLF http://abelian.org/vlf/amateur-radio/ It has been a very successful season so far. I hope this encourages more people to have a go at VLF, we
Am 14.12.2017 09:41, schrieb Paul Nicholson: Added to the growing list of amateur achievements at VLF http://abelian.org/vlf/amateur-radio/ It has been a very successful season so far. I hope this en
Hi Paul, Stefan, Jacek, VLF I'm on air with continuous carrier at the same QRG until 21:30 UTC, then: f = 8270.00332 Hz Start time: 21:30:00 UTC Symbol period: 30 s Characters: 3 (repeated) CRC bits:
Hello Riccardo, I'm sorry, i can't watch out for you in the moment. My tree is not available. It seems to have a problem. I need to maintain it soon. But there is only rain :-( I see your antenna cur
Todmorden: Decoded correctly, Eb/N0 = 0.0 dB, -32.4 dB in 1Hz. BER 38.8%, rank 262772. Ref phase -30 -30 0 0 Constant ref phase is 0.1 dB weaker. Bielefeld: No decode, Eb/N0 = -4.6 dB Cumiana: No dec
Decoded with Eb/N0 = +2.6 dB, rank 1, BER 41.6% Reference phase -120,-120,-150,-150. S/N -29.86 dB in 1Hz. Phase was -50.9 deg, previous nights were +19.1 and +35.7 degrees, has something changed th
Successful decodes at Cumiana and Todmorden of obviously correct message. Todmorden: Decoded Eb/N0 = +4.0 dB, -31.46 dB in 1Hz, rank 0, ref phase -120,-120,-150,-150; Bielefeld: No decode
Overnight 18th/19th successful decodes at Bielefeld, Cumiana, and Todmorden. Phase measurements are at 8270.0033187866 Hz instead of 8270.00332 Hz, a difference of 37.7 degrees per day. Todmorden 141
After correcting for the phase shift, Warsaw decodes from the two nights stacked: Eb/N0 = -0.3 dB, -35.74 dB in 1Hz, using ref phase pattern 120,90,150,120. Constant reference phase gives -1.5 dB. Bu
Hi Paul, Domenico, VLF. OK Paul, thanks again for your detailed info. A new transmission scheduled this night, trying a true "stacked decode" in Warsaw: f = 8270.0033187866 Hz Start time: 20:00:00 U
