This was 2011. It is a long time since I did experiments at sub-9kHz
Simple QRP projects, 10m, 8m, 6m, 4m, FT8, 160m, WSPR, LF/MF, sub-9kHz, nanowaves and other random stuff, some not related to amateur radio.
See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/15m-qrp-cw-pipit .
Currently I am on 70.013 MHz FT8 RX, hoping to see the EI4RF beacon, that I believe has some FT8 sequences. I am not hopeful. They say tune to 70.012 for FT8.
See https://www.qrz.com/db/EI4RF
UPDATE 2050z: Nothing seen. I shall try for another 20 minutes or so and then call it a night.
UPDATE 2116z: Still nothing. QRT.
At the moment I am trying MSK144 on 50.280 MHz in a test with OZ9FZ.
UPDATE 2122z: Nothing so QSYed to 4m FT8 RX.
Sometimes people want a wideband antenna covering several bands. One to consider is the bicone. these can be quite large, but can cover several bands.
The site I always look at for the latest data is still showing the peak of this solar cycle in November 2023, i.e. this year. The information was only updated today.
My gear was turned on at breakfast. With a 12V supply it produces 3.4W so with my diodes in the supply line I think (at most ) my output is...