1. QRP HF Ham Radio Transceiver/Kits SSB/CW - https://www.qrptransceiver.com/
2. UT2YR: Друге життя старим радіоприймачам. Ч.1 Теоретична. - https://ut2yr.blogspot.com/2022/11/1.html
3. FT8RX - FT8 Decoder - https://play.google.com/store/apps/details?id=com.swi.ft8dx&hl=uk&gl=US
4. The GB7MBC DXCLUSTER homepage - https://www.gb7mbc.net/
5. Wolf River Coil Antenna Tips & Modifications - https://www.youtube.com/watch?v=4giJANg0Gf8&t=201s
** QST review of the WRC system: https://kb1hqs.com/wp-content/uploads/2017/06/QST_WRC-Antenna-Review.pdf