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I would be reluctant to destroy a good factory built antenna. You can build a few inexpensive test / trial antennas using wood or plastic boom and wire elements. That would leave you a working antenna as a reference to compare performance against. You could then answer the question, "Will all of this WORK for me and will the effort increase the GAIN much for me?" for yourself. In theory, adding five more directors could yield 3 dB of forward gain... if you get it right.
450 ohm ladder line is a great stacking harness material, if you can find some. Open wire twin lead is easy to build, and Wikipedia has the formulas needed to calculate characteristic impedance.
Wavelength = Speed of light / Frequency
Channel 13's band center is 213 MHz, therefor 299792458 M/s divided by 213 MHz is about 1.4 Meters. Half of that is about 0.7 Meters.
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If the well is dry and you don't see rain on the horizon, you'll need to dig the hole deeper. (If the antenna can't get the job done, an amp won't fix it.)
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Last edited by GroundUrMast; 21-Apr-2011 at 4:54 AM.
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