M1DRF - Coax-calc.exe


Download the exe and place in a directory of your choice, or create a new one. If you have created a shortcut, double click on the locator icon

Nothing fancy about this one, it'll pop up somewhere on your screen, looking like this

If you leave the mouse over one of the boxes, a Tip will appear suggesting what should be entered/selected

Enter the required center frequency, the number of quarter wavelengths you require the co-ax to be, then select the cable type from the drop down box

Click on Calculate and the required length will be displayed in the boxes.
The top box shows the length of a quarter wave (x the number entered) for the entered frequency with air as a dialectric. The second box shows the Velocity Factor corrected length for the choosen type of co-ax. If the co-ax type you are using is not shown, use another with the same velocity factor, or email me and I will add it to the program.
Although the answer given is correct based on the manufacturers specs, I would suggest the use of a dip meter to finally trim to the exact length.


That's it, any problems, let me know and I'll do my best to help.



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