1. QRP HF LOOP ANTENNA - http://www.iz0hcc.it/qrp-hf-loop-antenna/

2. GREENPARTY 2021 (The Romanian Society of Radioamateurs) - https://wff-yo.blogspot.com/p/blog-page_3.html

3. Любителям СВ: Cobra 29 LTD CLASSIC - https://radioaficion.com/cms/cobra-29-ltd-classic/

4. SDR4Space (Software Defined Radio for Space Applications) - http://sdr4.space/

5. UR5YW: Измерение магнитной проницаемости ферритовых колец и трубок - https://www.youtube.com/watch?v=4g_t70HeSaY