Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Grimeton Radio Station, Varberg' has mentioned 'Wavelength' in the following places:
Occurrence Sentence Text Source
The antenna system, consisting of antenna wires supported by towers like those supporting high-tension power lines, has a very low efficiency due to the fact that the length of the antenna is still relatively small compared to the output wavelength.
To achieve maximum range, like other transoceanic radiotelegraphy stations of this era it transmitted in the VLF band, at a frequency of 17.2xc2xa0kilohertz and so the wavelength is approximately 17,442xc2xa0meters.
Even though the antenna is approximately 2xc2xa0km long, it is short compared with the wavelength and so it is not very efficient.