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Ham Radio Multiband Ground Plane Antenna
by target=”_blank” href=”https://www.thingiverse.com/ok1cdj” target=”_blank” rel=”noreferrer noopener”>ok1cdj
Download Files :target=”_blank” href=”https://www.thingiverse.com/thing:2030237″ target=”_blank” rel=”noreferrer noopener”>https://www.thingiverse.com/thing:2030237
This is remix from target=”_blank” href=”https://www.thingiverse.com/thing:1725339″ target=”_blank” rel=”noreferrer noopener”>http://www.thingiverse.com/thing:1725339
The idea is make 3 or 4 band lightweight portable vertical antenna.
The dimensions and simulations and measurements coming soon.
Work is in progress.
The holder is designed in Openscad and use cable ties.
CHANGE LOG
12.1.2017
- Added simulation of 40,20,30m version with base loading coil.
13.1.2017
- Added radial end insulator in STL and OpenSCAD
23.1.2017
- Added reduction for BNC connector and cover when connector is not used
26.1.2017
- Added knob for M6 nuts
07.2.2017
- Coil inductance measurement
10.2.2017
- Improved coil holder for better fit of cable ties
12.2.2017
- Bottom fixing for fibre glass pole – 6m Decathon travel pole or cheap 6m pole Agepoch from Aliexpress.
- pole guying part for top of pole – 5mm and 10mm diameter
26.2.2017
- Field test of 40/30/20m version with VNA, 4.1 m lenght of vertical element, 5.25m radials
Antenna is really narrow on 40m as expected. - Plots from VNA.
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The post target=”_blank” href=”https://qrznow.com/multiband-ground-plane-antenna-3d-print/”>Multiband Ground Plane Antenna [ 3D print ] appeared first on target=”_blank” href=”https://qrznow.com/”>QRZ NOW – Ham Radio News.
