Half-Wave Dipole Aerial & Making a Balun
The Half Wave Dipole is an
Antenna that is robust, handles high power and has 0dB gain. In real
fact it does have some gain. And it will usually outperform 5/8 wave
verticals. For a dipole aerial to work properly, it must be resonant at
the frequency you are using. It has a fairly wide bandwidth though, so
you will be able to use it about 4 MHz above and below the centre
frequency without re-tuning, in practice.