Re: Long wire AM aerial - directional?
Many people have mentioned about the length of an aerial and comparing it to the wavelength of the signal you are trying to receive. But it's not been pointed out exactly what wavelengths we are talking about. Probaly the most extreme is Radio 4 LW at 200kHz. The wavelength is 1.5km, so almost a mile. Even the transmitting aerial is nothing like that. Also, it shows that since the transmitting antenna is essentially a long wire (although centre fed as I understand, so technically a dipole) there isn't a significant directionality to it.
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