Sep 23, 2019 · World's leading amateur radio web site with news, technical articles, discussions, practice exams and more.

DL0AO VLF-Grabber near Amberg, JN59VK H-field antennas: 150 m long earth dipoles, EW = east-west 265°, SN = south-north 355°, active E-field probe: V = ...

It is a closed loop, non-resonated, with an impedance matching transformer. This transformer previously had 1:100 turns. Now it (they) has 2:240 turns, i.e. two ...

Receiving DK7FC on 17 km band · 8270 · DK7FC · grabber · Loop Antenna · Low Bands · VLF · First reception on 8270 Hz.

Jan 11, 2021 · New Amateur VLF Transatlantic Record Set. 01/11/2021. Very low frequency (VLF) enthusiast Joe Craig, VO1NA, reports that Stefan Schaefer, DK7FC, ...

Jan 6, 2019 · Stefan DK7FC did a succesful transmit experiment utilising a ground diole on VLF. This resulted in a really strong signal on our Warsaw ...

Stefan, DK7FC, was able to decipher the message immediately and despite the strong interference from QRN and rain on his location with astonishing 2.3 dB Eb / ...

Stefan, DK7FC did a couple of amazing transmissions on 8.97KHz, 6.47KHz and 5.17KHz! Much more details documented from Stefan on qrz.com - please go to ...

May 12, 2010 · Roger G3XBM's (Mainly) Amateur Radio Blog. Simple QRP projects, 10m, 8m, 6m, 4m, FT8, 160m, WSPR, LF/MF, sub-9kHz, nanowaves and other random ...