Assertion: dipole antenna | /r/HasAspect | typical gain of -4 db
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Source sentences:
text: These are available with either a 75 Ω {\displaystyle \Omega } or 300 Ω {\displaystyle \Omega } impedance and have a typical gain of -4 dB with respect to a ½ λ {\displaystyle \lambda } dipole.