Plain-language answer: A dipole is a balanced two-conductor antenna fed between its arms, commonly near the center but not necessarily one half-wavelength long.
Why it changes the result
Length, height, arm angle, conductor size, feed method, and surroundings determine impedance and pattern. A balun or choke helps keep coax from joining it.
What to verify
Measure both arms, reproduce the intended geometry, strain-relieve the feedpoint, and sweep R and X before transmitting.
The common mistake
Calling every two-wire antenna a textbook 50-ohm half-wave dipole.
Complete-system boundary
Match the exact radiator, feed system, return path, frequency, height, orientation, and environment. Connector or thread fit does not establish electrical compatibility, structural capacity, or safe operation.
