Well, now we know where Antennasdirect got their antenna designs! LOL
Those antennas are virtual clones of antennas sold here in North America by Antennasdirect. Frankly speaking, if you have the SF91WB antenna, you won't do significantly better with a 4228. You might try stacking those SF91WB antennas in a horizontal array or in a diamond-type array and see how you do. The size of the 4228 box will make shipping it to New Zeeland prohibitive: you will be able to do those SF91WB' for far less money.
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Real men don't use indoor antennas; neither do real women!
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