Telescopic GP antenna
thingiverse
Here is a small, portable ground plane antenna designed for experimenting with VNA on the 2m and 70m bands using five telescopic antennas from eBay. Each of these antennas is just 62cm long and features four elements, all costing a mere 1 euro per piece. To assemble this setup, you'll need to obtain a few additional components: A SO259 connector is necessary for connecting the antenna to your VNA. Four M3 screws measuring 16mm in length will be required to secure the antenna's elements. Lastly, a piece of double-sided velcro tape will come in handy for attaching the antenna to your desired location.
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