1. KB9II's QRP Antenna Bridge (QRP антенний міст) - http://my.core.com/4B/29/jematz/qrp/kb9ii-s2.htm
2. UY5XE: Истории создания соревнований по СРП / ARDF - 95 лет! - https://deltaclub.org.ua/bibliteka/ardf-95.html
3. YOTA Contest – 18th July 2021 - https://www.iaru-r1.org/2021/upcoming-yota-contest-18th-july-2021/
4. Multiband End-fed 80-10m antenna - https://vk3il.net/projects-antenna/multiband-end-fed-80-10m-antenna/
** Experiments with 160m antennas - https://vk3il.net/projects-antenna/experiments-with-160m-antennas/
5. Multi Band End Fed Antenna - https://iw2mxe.jimdofree.com/autocostruzione/antenna-multi-band-end-fed-efmba/
