1. MFJ-9219, QRP Antenna Tuner, SWR/Wattmeter & Dummy Load - https://mfjenterprises.com/collections/new-products/products/mfj-9219-qrp-antenna-tuner-swr-wattmeter-dummy-load
** MFJ: New Products - https://mfjenterprises.com/collections/new-products
2. PA3GZK's SWR protection (захист КСВ-метра) - https://pa0fri.home.xs4all.nl/Diversen/SWR%20protection/SWR%20protection.htm
** Antenna current meter - https://pa0fri.home.xs4all.nl/ATU/Ant%20current%20meter/Antenna%20current%20meter.htm
** PA0FRI's active loop antenna (конструкція активної антени) - https://pa0fri.home.xs4all.nl/Ant/PA0FRI's%20actieve%20antenne/PA0FRI's%20active%20loop%20antenna.htm
3. ROCKALL expedition - https://www.rockallexped.com/
4. Homebrew Portable T-Match ATU - https://vk1nam.wordpress.com/2018/12/08/homebrew-portable-t-match-atu/
5. Amateur radio in the news: Ukraine uses SDR, Winter FD in NC, SkyWarn in TX (Радіоаматори в новинах: Україна використовує SDR, Winter FD в NC, SkyWarn в TX) - https://www.kb6nu.com/amateur-radio-in-the-news-ukraine-uses-sdr-winter-fd-in-nc-skywarn-in-tx/
