Dr Marco Langbroek on X: "@Polasokeri @NickAstronomer First is the 137 MHz antenna. Reflectors 27 cm below the dipole. Second is the 415 MHz antenna. Made for less than EUR 20,- in
Just built myself a 137 MHz QFH antenna. : r/RTLSDR
QFH Antenna 137 Mhz Quadri Filar Helix NOAA
DIY – 137 Mhz V-dipole antenna for weather satellites reception
KE-137 QFH Antenna NOAA, ACARS 135/137 MHz
Ing. Miroslav Gola - EMGO
137 MHz Turnstile Antenna | 3D CAD Model Library | GrabCAD
Turnstile antenna for 137 MHz assembled | csete | Flickr