Originally posted by HermanZA
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Seems pretty honest with the gain figures too... he (?) states:
Gain 2,3 Dbd
Note this is Dbd.... which is gain over a dipole, not Dbi - which is an imaginary perfect antenna... this measurement is frowned upon in the Amateur radio world as it always offers a higher gain figure !
As with anything antenna... the hardware and making the thing weatherproof is the hard bit - the antenna proper is going to be a few pennies worth of copper wire.
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