Assertion: wave's frequency | /r/HasProperty | measured by means of heterodyning
Facets:
value: above the range of frequency counters
type: OTHER
value: indirectly
type: MANNER
value: often
type: TEMPORAL
Source sentences:
text: Above the range of frequency counters, frequencies of electromagnetic signals are often measured indirectly by means of heterodyning (frequency conversion).
text: Above the range of frequency counters, frequencies of electromagnetic signals are often measured indirectly by means of heterodyning (frequency conversion).