TX frequency 8.976kHz initially with 10wpm CW, 300Hz bandwidth, sending my callsign and a dash. OK, I was only testing from the shack to the lounge, but this is a start. If the loop is successful I may try the E-field probe.
This will be my first VLF field test in over 18 months. I have soak tested the TX and it should be fine on QRSS3 using my loop and Spectran at the RX end. Setting up the gear will be especially tiring in my current state. The XYL will be there at the test site if I get really tired. It will not be until late afternoon as both my wife and I are busy before then. I guess the radio work today was hard as I had not done this sort of thing for some time.Īnyway, the good news is that I hope to do a VLF field test tomorrow. It is when I do something requiring real physical or mental effort that I get tired. Oddly, when sitting down at home or when driving things are fine. One of my aims (among many) is to be able to resume field tests as before, but time will tell if I am really up to this: it is quite hard when your brain is still foggy a lot of the time. Now trivial tasks feel like climbing mountains! Although I can see progress in my recovery there is still a long way to go. Before my cerebellum brain bleed everything today would have been trivial.
It seems that after about 10-15 minutes of physical or mental effort I am done in. The whole exercise was far more exhausting than I was expecting. On the way I managed to blow up a TDA2003 IC, which I had to replace. At this QTH they look much greater than 50 ohms, which I measured at the “old” QTH and optimised for. Today I adjusted the turns ratio on my 8.976kHz VLF QRSS3 and 10wpm CW 5W beacon to better match my earth electrodes.
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