137MHz Weather Set V-dipole Telescopic Pull-rod Antenna for FM Aerial Satellite | eBay
137 MHz Turnstile Antenna | 3D CAD Model Library | GrabCAD
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
137 MHz, ANTENNA, NOAA | eBay
Quadrifilar Helix Antenna (137 MHz) for NOAA Weather Satellites