Assertion: doublet antenna | /r/HasProperty | popular
Facets:
value: relatively
type: DEGREE
value: with radio amateurs
type: OTHER
Source sentences:
text: As a result, the doublet antenna forms a very convenient multiband antenna and it is often used at HF where a number of different HF bands need to be covered, and it is relatively popular with radio amateurs where it enables several bands to be used with a single antenna.