|Square Dipole for 160 meter
This is Square Dipole might be a good option if your space is not big enough for a full size half wave 160m dipole. It is almost as good as a full size dipole, the gain is only abt 3dB less (half S-unit). You can install it at a height from 10m to 20m or even lower. It is not the best DX antenna but it is very useful for local 160m QSOs. The construction is not critical, you can adapt the shape according to your space.
Square Dipole top view. It looks like a horizontal loop but it is not a loop because the wire ends are insulated.
Note. The RF voltage between the wire ends is very high - make the insulator long enough, 10cm or more.
3D radiation pattern is good for NVIS QSOs
And don't forget a common mode balun in the feeding point! See more here
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