| I have included the image below for reference to the dimensions used in the Splitter program. Inner diameter = a, Outer diameter = b. |
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| Download the exe and place in a directory of your choice, or create a new one. Double click on the Splitter.exe icon. After the program loads, you will be presented with the following screen |
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Using the program - Example 1 |
| I will run through an example, using 435.850 as the centre frequency, 22mm square section outer, 50 ohm feedline impedance with a 2 way split. |
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| Feedline impedance is correct, LEAVE ZERO in the inner box, enter 22 in the outer box, center frequency is correct. |
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| Leave the length box blank, 2 way split is correct, click on Square Section Outer |
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| Click on Calculate and a message box will appear with the required diameter. |
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| and also the length box will have been filled with the dimension L shown below. |
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Example 2 |
| this time we will use the same centre frequency of 435.850, a 2 way split and square outer section, feedline impedance unchanged at 50 ohms. |
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| In the Inner diameter box enter 7.3, ENTER ZERO in the outer diameter box |
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| Then click on Calculate and a message box will appear giving the required outer diameter size. |
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Example 3 |
| Use the same centre frequency of 435.850, a 2 way split and square outer section. |
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| ENTER ZERO in the Feedline Impedance box, 7.3 for the inner diameter and 22 for the outer diameter |
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| Then click on Calculate and a message box will appear giving the impedance using the inner and outer dimensions entered. |
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| If you were expecting an answer of 50 ohms at this point, remember, what we are calculating is the required quarter wave impedance to match two 50 ohm antenna to a 50 ohm source. See the page on Splitters/Combiners for an example of the calculation. |
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| That's it, any problems, let me know and I'll do my best to help. |
Software
