Technik

Elektronik – Tutorials

https://www.youtube.com/channel/UC2S3fb5TOUVdMlipJ46Gd0w

Kurs AFU

https://www.youtube.com/channel/UCwP_Z2RDdffuTjz4Y7sEb8A

Mantelwellensperre

https://www.youtube.com/watch?v=iLAIXXh_BQ8

2-Element parasitic Yagis

http://dk7zb.darc.de/2-Ele-Kurzwelle/2-Ele-details.htm