1. Mountain QRP Club: 18 липня - Field Day MQC 2021 - https://www.mountainqrp.it/wp/field-day-mqc-2021/
2. Audio CW Filter - https://www.qsl.net/g4aon/g4aon_cwf/
** 6m J-Pole Antenna using Ribbon Cable - https://www.qsl.net/g4aon/j-pole/
3. MINI600 Antenna Analyzer EU1KY Firmware Version 1.04 - http://radcomms.net/Miracle_Tuner.html
** Антенный анализатор EU1KY - http://ha3hz.hu/hu/home/top-nav/12-seged-berendezesek/12-eu1ky-antenna-analizator
4.Черговий випуск The 144 MHz EME NewsLetter (10 July) - http://www.df2zc.de/downloads/emenl202107_final.pdf
5. UR3QQC: Молния и антенна - https://www.youtube.com/watch?v=hAwi8pwdINI
