1. TINY TORNADO QRP transceiver - https://www.qsl.net/kc6wdk/QRP/tornado.htm
2. The Vertical-L-Antenna ("up-and-outer") by DK7ZB - https://www.qsl.net/dk7zb/Vertikal/Vertikale-L/Vertical-L.htm
** Un-Uns for Endfed-Antennas (EFHW) by DK7ZB - https://www.qsl.net/dk7zb/Baluns/Endfed.htm
3. IOTA News from OPDX - http://www.southgatearc.org/iota/opdx/index.htm#.YI-p3rUzZaQ
4. Linear Loaded Dipole for 20 m (Маленька дипольна антена, встановлена всередині балкона) - https://klsin.bpmsg.com/linear-loaded-dipole-for-20-m/
5. Maritime Radio Day (MRD) - http://mrd.sfk-bremen.com/mrd_attention.php
Date: 14th April 1200 UTC 15th April 2200 UTC
Bands: 160m, 80m, 40m, 20m, 15 & 10m plus WARC
Mode: CW only
** Maritime Radio Day 2021 - https://trafficlist.altervista.org/mrd/