https://hamhub.uk/forums/reply/983/
Reply To: Multiple antennas on a single mast - Ham Hub UK
Jan 31, 2022 - as a side point you will want to keep the coax as short as possible on the 1090 ADS antenna as attenuation per metre at that frequency is quite high and that...
multiple antennassingle mastreply
https://scholars.lib.ntu.edu.tw/entities/publication/32a146f2-7fda-438a-9101-b21495faff36
Optimization of Three-Dimensional Multi-Shell Dielectric Lens Antennas to Radiate Multiple Shaped...