On Thu, Jun 6, 2024 at 04:21 PM, Bruce Hawkins wrote:
But they go quite low. The next real problem is the antenna. For the SA or the HF receiver (30, 100kHz is not uncommon).
Most of the PA0RDT type E-Probe antennas will work down to at least 10kHz, but noise and interference is a problem in Urban environments.
If you are really keen, you can try to hear the Earth's Shumann resonances at around 7, 14 and 20Hz, YES, I did mean Hz.
These folks mange to do it.
Regards,
Martin
