His idea was to use the tape as the radiator for an end-fed halfwave, or EFHW, antenna, a multiband design that’s a popular option for hams operating from the 80-m band down to the 10-m band.

[N2MXX] has an end fed antenna winder design that also contains the necessary ... Of course, you also need wire and some other components — we don’t know how to 3D print a usable ferrite ...