Use a #3DPrinter to make an easy antenna to receive #HamRadio satellites! Tnx @hackaday https://t.co/RGiNHbyA9I #STEM #EdTech @jeriellsworth pic.twitter.com/eldP7fkACE

— ARRL (@arrl) February 15, 2017

This antenna is based on the WB0CMT (SK) “7 dB for 7 bucks” antenna design (published in the April 1993 edition of QST Magazine).