Hello Paul and Stefan, I thought it would be interesting as a guide for future testing to know if path loss at 2970 Hz 100km 1000km (a mode-sensitive combination with no validated models) is closer t
Hello Stefan, It is good to see your recent (8270 Hz) 34 dB at 31.6 uHz in Todmorden, 21.7dB 31.6uHz on Jacek's grabber, and (6470 Hz) 18 dB in 46.3 uHz in Todmorden, and a textbook DFCW-6000 spectro
Stefan, Sounds very interesting; would the function of the DC input primarily be to reduce output amplitude during the microseconds-long transitions between QRSS states or EbNaut or OP32 states? Or t
Thanks Paul, What a wonderful sound. Unfortunate that bird's magnetic sensors dont have the sensitivity/bandwidth for what you captured; they could perhaps tune their nav systems for reduced sensitiv
Hello Claudio, Yes I agree with your sentiment, I was thinking of listening to the time-domain sub-Hz content; mixing or demodulating to remove any carrier (using Spectrum Lab or Matlab for example)
Is the current record 85 characters? (same path, 8270 Hz) Jim AA5BW From: [email protected] [mailto:[email protected]] On Behalf Of DK7FC Sent: Wednesday, May 3, 201
Congratulations! Jim AA5BW Decoded after a bit of work "THIS IS A NEW LONGEST EBNAUT MESSAGE ON VLF. 881 KM ON THE 36 KM BAND. JOIN THE VLF ACTIVITIES! 73!" list rank: 0 constant reference phase carr
First TA calibration of a TX antenna current meter with LWPC I just ran LWPC for the midnight path with 10uW ERP and it comes back with 0.069 fT. http://abelian.org/lwpc/?date=2017-05-08+00%3A00&txla
The quantitative agreement is amazing and impressive The water path and favorable Dst dont hurt estimation, but the long remainder of the error budget chain appears to be impressively controlled. Rea
Paul, Thanks for very good AoA validation of Joe's signal. Not sure if Joe's antenna is pure vertical and remain intrigued by VLF AoA error with VLF TX antennas that have non-vertical E components du
Joe mentioned: "Could part of this fluctuation be from propagation?" Joe and Paul, For your consideration and (with your permission) my edification have we seen natural-propagation-related frequency
Paul, Thats so exciting I created a folder in anticipation of data next winter. For those events I can provide spectrograms from 2 fT/rt-Hz receivers near Atlanta GA and Gainsville, FL; they run cont
Joe and Paul, I can collect data on Joe's signal from some other receivers this week. Nominal operating sensitivity is 10 fT/rt-Hz or better; generally southwest (SSW, SW, WSW) at 2000 -3000 km Would
