The snow shovel and 28 cm awaits! 73 Joe Hi Markus and Paul, Group, Thank-you for the reports. I'll try 0.2 s symbols, 131 characters tonight starting 2000. I's better get out and deal with the snow
Hi Paul, compiled v0.3 but got a bailout 5000 symbols for 8K19A so tried 4K19A. Set to go in 8-1/2 mins. 0.2s symbols 131 chars. Joe At 20:00 and 20:30 I only got carrier. It decoded well with 131 ch
John is right -- what a mess I've left on the EU grabbers! I'll set the Arduino for 137.37 for high speed EbNaut. Perhaps it's time for a rebuild of the exciter as the Arduino does not handle 32 bit
There seems to be a jump after local noon. This could give some info on diurnal variability. I'll keep it going then. There is no trace of CHU on 3330 kHz yet. The K index is 4 so the ionosphere must
Very interesting, Paul -- propagation or oscillator could be causing the frequency changes. I'll have to reduce my drift a bit to answer that one! Rx off now for battery charge. Those 3.05 Hz sideban
Hi Edgar, I was using 137.777 until 1400 today. Are you interested in watching for a carrier or a few long EbNaut characters? The oscillator is a bit drifty but the aerial is still up after the last
Hi Edgar, Paul, Group, 16K21A 2 chars 8 second symbols 1:42:24 duration starting 0000 and every second hour till 1200. Your setup and Paul's favourable comments on the oscillator makes it worth a try
Paul and Markus, Critique on the sigs are most welcomed. Getting a decode from Paul on a dead preamp is very satisfying! Lets do a repeat of last night's 8 s 2c starting in 5 mins. 73 Joe VO1NA Paul,
Hi Edgar, A lovely bit of annimation, but no sidebands for me to see. Paul mentioned a carrier so 4 amps at 137.777 kHz (-0.255 mHz) to the rotated L aerial starting now until 1130 tomorrow morning.
Oh well, I guess we'll have to try again. Its nice to see that the carrier, though much weaker, is cleaner than DFC39. Always happy to get your plots, Markus Paul and Edgar. The TX was switched off a
The phase and amplitude plots are showing clear diurnal signals so it looks as if it's mother nature rather than the oscillator causing the major variations. I'd like to get a 3 day mean of these plo
Hi Edgar, There looked to be a nice peak in the earlier spectrogram. It's promising. Perhaps your noise levels will be down in your summer. Shall we try then? 73 Joe TX now off. Period of common dark
Hi Markus, You are most welcome. Thank-you for the detailed reports on the signals and the interesting commentary. I'll be busy reading for a while! A signal to VK7 is a fond dream and with more radi
Hi Edgar, The TX was switched off at 0013 UTC 12 Dec. Markus has suggested a carrier during our common darkness. We can try this if you are interested. Best Regards Joe VO1NA https://dl.dropboxuserco
Not much seen this time. Lets have another go 0900-1200 utc 20 Dec. Thank-you Joe VO1NA https://dl.dropboxusercontent.com/u/101251787/VO1NA/VO1NA%2019-12-2015.gif Regards, Edgar Moonah, Tasmania.
It was a nice but windy day today so the VLF TX was put on the air for a quick test. About 30 watts were fed to a 5:1 XFMR and a ~0.35H tuning coil to the 100m wire at 10m height. CW signals were hea
This confirms the 0900-1200 window. I'll send your spectrogram to the National Research Council who run CHU if that's OK with you. Good luck tonight on your RX efforts. 73 Joe https://dl.dropboxuserc
Hi Paul and thanks very much for the data. Unfortunately, after the experiment, the aerial current had decreased to zero. It seems a short developed in the tuning coil. A better design is being consi
Hi Edgar, Thanks for this service. Please let me know when you would like to try again. Merry Christmas and Happy New Year Joe VO1NA Hi Joe, The receiver at QE37pd will not be running for the next fe
