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Can I use 2 identical rubber ducky antennas with a splitter on my CB HT radio to improve range?

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  • $\begingroup$ Hello and welcome to ham.stackexchange.com! $\endgroup$
    – rclocher3
    Commented Nov 2, 2020 at 18:58

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Theoretically yes, if you carefully control the lengths of the cables and the placement of the antennas. This is called a phased array.

However, you would get a far better improvement in range by using an antenna which is not a rubber ducky, like a 1/4 wave whip or a dipole. Rubber ducky antennas are electrically shortened, making them smaller. The price of that reduction in size is reduced efficiency.

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  • $\begingroup$ And on an HT, it would be a large (~9' long) and cumbersome thing, considerably heavier than the HT. $\endgroup$ Commented Nov 3, 2020 at 23:52

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