VHF-UHF Weak signal
https://www.rmham.org/wp-content/uploads/2021/10/RMHAM_Univ_VHFUHFweaksignal_K2AD_rev2.pdf
https://www.rmham.org/wp-content/uploads/2021/10/RMHAM_Univ_VHFUHFweaksignal_N0POH_RMHam-U.pdf
http://www.aprs.org/meteors.html
https://www.qsl.net/g0isw/g0iswms.htm
http://pnwvhfs.org/conference/2019/pdf/Intro-to-Meteor-Scatter-by-Barry-K7BWH-v4.pdf
https://k5nd.net/2023/04/meteor-scatter-propagation-how-it-works-getting-on-the-air/