1. Antenne verticale HF 5 bandes 1/4 d'onde (5-діапазонна вертикальна КХ-антена на 1/4 хвилі) - https://j28ro.blogspot.com/2023/07/antenne-verticale-hf-5-bandes-14-donde.html
2. LiFePO4 battery pack - https://oldcyberdude.com/wb5nhl/projects/lifepo4-battery-pack/
3. OL-SDR (HF 1.8-50MHz 2 CHANNELS SDR transceiver) - https://www.olliter.com/download.html
4. Calculation of ERP and EIRP - https://www.arcticpeak.com/radiopages/erp_calculator.htm
** Calculate intermodulation products from 2 and 3 frequencies - https://www.arcticpeak.com/radiopages/intermodulationproducts.htm
5. 10-Meter Repeater Directory for North America - https://www.qsl.net/kc4qlp/10meterrepeater.html
** UK Scanner Frequencies Amateur Repeaters - https://www.qsl.net/m3gnn/ht/Amateur%20Repeaters.htm
73 de UT2AB
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