Assertion: tower's antenna | /r/Causes | excessive power losses
Facets:
value: in the ground system
type: LOCATION
Source sentences:
text: During the first 20 years of radio, long distance radio stations used long wavelengths in the very low frequency band, so even the tallest antennas were electrically short and had very low radiation resistance of 5-25 Ohms, causing excessive power losses in the ground system.