1. QRPGuys Portable Multi-Band End Fed Antenna - https://qrpguys.com/qrpguys-multi-band-end-fed-antenna
http://www.ur5ffr.com/viewtopic.php?f=11&t=298
2. Черговий випуск INFO RADIO Nr51-2021 - https://en.calameo.com/read/003056856c689ed671772
3. Xiegu G90 ремонт длиной в 9 1/2 недель (Comm Lost, Repair) - https://www.youtube.com/watch?v=FmS5DDkF-tY
4. Signals Received Worldwide - https://rxx.classaxe.com/en/rww/signals
5. FVR Spitfire Array (антена на НЧ діапазони) - http://www.yccc.org/Articles/Spitfire/spitfire.htm
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