With any luck the new helix will not arc and the 10 uW carrier on 8270.007 Hz will remain QRV until further notice. Stefan has reassured me that I probably won't cause too much QRM on 8270 but please
There's a bit of a peak forming after 6 hours, but it's 46.3 uHz on the high side of 8270.007 - that's one FT bin high. http://abelian.org/vlf/tmp/170508a.gif Will keep an eye on it as the day progre
Noise is coming from the south west, Joe is on bearing 280. I shifted the beam north to 310 to reduce the noise quite a lot (and the signal a bit too) - Now in 39.7 uHz http://abelian.org/vlf/tmp/170
8270.007 is not a whole number of cycles in 24 hours. Will SL make a phase step at some point, perhaps midnight local or midnight UT? -- Paul Nicholson --
Ok. There was mention of locking SL to NAA some emails ago but maybe that was for reception. Anyway, I shifted the 6 hour window back an hour, 22:00 to 04:00 UT to get http://abelian.org/vlf/tmp/170
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&txlat=47.773&txlon=-52.7&freq=8.27&txpow=10e-6&rxlat=53.703&rxlon
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
Daytime signal is measuring 0.04 fT 08:00 to 11:00 which also agrees with LWPC. If this is VO1NA, we should get a good result if Joe is able to keep the transmitter going and phase-stable until 20:0
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
Hi Paul, Markus, Group, The level of expertise on this group is humbling and these results are amazing. The carrier was generated with an undisciplined 10 MHz DOCXO clocking an ad9851. As Markus poin
Watson-Watt calculation from the antenna amplitudes and phases of the overnight signal gives 244 degrees which is reasonable given the background noise from the south west (pulling the apparent beari
Hello Joe, Congratulations for the impressive results from your 10 uW signal. Seems you are having a good start into VLF now. I hope i can see you here one day. My loop is already showing in your dir
Thanks Jim, Good to learn that I put the decimal point in the right place for the ERP! 73 Joe The quantitative agreement is amazing and impressive The water path and favorable Dst dont hurt estimatio
Thank-you Stefan, It is good to have a source of inspiration. Your ULF work is a fine example. Yes, 100 uW should be possible and your tree is the next milestone for the VLF photons. 73 Joe Hello Joe
Thank-you Paul. Your RX setup and processing are fantastic. 2.6 electrons on an e probe - that delights me! EbNaut and 100 uW are the next goals. 73 Joe Watson-Watt calculation from the antenna ampli
The daytime signal peaks at a different frequency, averaging 8270.00709300 Hz +/- 0.5 uHz between 08:00 and 17:00. I'm also seeing the same shift at Forest, VA. The frequency is now close to the DDS
I can't detect any signal from Joe last night 8th/9th 22:00 to 04:00, not a trace - perhaps the tx has gone off. After sweeping for optimum settings, I couldn't get much improvement. Daytime receptio
