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
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:
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
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
After four repeats the results are now: Todmorden 1413km -- 17/18th Eb/N0 +4.0 dB, -31.5 dB in 1Hz, phase -117.5 deg *decoded*; 18/19th Eb/N0 +6.0 dB, -29.5 dB in 1Hz, phase +8.7 deg *decoded*;
Hi Paul, Stefan my first PA for MF and LF, based on a IRF520, was similar. However, I used a most appropriate 1:4 output transformer instead a 1:9. With 13.8V, a 50mA bias current is more than adequ
Thanks so much, Domenico! Merry Christmas to you and the LF Group! This evening I'll send you my wishes in chirped hell on 476.145 kHz :-) All the best 73 de Riccardo IW4DXW Il 24/Dic/2017 18:31, <jc
Success! Decoded 'QRZ' at Cumiana (IK1QFK) with Eb/N0 = +0.4 dB, BER 41.6%; S/N -31.7 dB in 1Hz, -65.7 dB in 2.5kHz (after sferic blanking); List rank 5689, constant reference phase; Distance is 717
Hi VLF, I'm back on air EbNaut with a new PA: QRG: 8270.01953125 3 chars 60 sec/sym. coding 16K21A CRC 8 duration: 12h 16' antenna current: 520 mA Thanks a lot for reports. GE. 73 de Riccardo IW4DXW
Hi Paul, Stefan, Andy, Markus....VLF My specified QRG (printed with all decimals) is obviously theoretical. It permits, as Paul well explained, to achieve in days maximum reference phase precision fo
MHz? What is that? Am 09.01.2018 20:28, schrieb Andy Talbot: Just a thought The say GPSDO is delivering 16.384MHz But there's a very good chance the GPSDO itself uses a DDS, so is subject to 32 bit