Quadruple Oblong for 144 MHz
thingiverse
Parts required for the DK7ZB design of a Quadruple Oblong antenna for 144 MHz are available online. A detailed guide is provided at http://www.qsl.net/dk7zb/Quadlong/4xoblong-2m.htm. Printing the parts using any material without support is possible. To assemble the antenna, you need one top holder, one dipole holder and three identical holders. The dipole is designed for BNC connectors. Elements are constructed from 4mm x 1 brass tube and 1.5mm copper wire. A fibre glass pole from DX Wire serves as a non-metallic support. Any suitable non-metallic material can be used in its place. The SWR of the antenna remains good throughout the 2m band. If you don't have access to a 3D printer or prefer not to spend time printing parts, you can purchase them online at http://hamshop.cz/anteny-c9/quadruple-oblong-na-144-mhz-plastove-dily-i305/.
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