VLF transmit tests from a ground dipole

Encouraged by our last experiments with ground dipoles we decided to do a transmit experiment with this antenna on VLF 8.270kHz, 36km (36000m) wavelength. Thanks to  Fab LAB Trójmiasto we had a great location on the see on a cliff near the Baltic Sea in Gdynia. Our goals for this experiment were:

  • Try transmitting from a ground dipole on VLF
  • Assess the field strength near the sea
  • See if it is possible to reach greater distances with relatively simple equipment and low power.
  • Test a broadband transformer for VLF-LF-MF

Continue reading “VLF transmit tests from a ground dipole”

6470Hz transmission by DK7FC succesfuly received at SQ5BPF (900km distance)

Stefan DK7FC has been recently transmitting on 6470Hz (46km wavelength) from a stationary antenna between two buildings.

The Ebnaut transmissions were received by Paul Nicholson (England) and Jacek SQ5BPF (Poland) at a distance of 900km (IN49IK to KO02MD).

Continue reading “6470Hz transmission by DK7FC succesfuly received at SQ5BPF (900km distance)”