how long /wide is a 1/4 wavelength strip at 5800mhz on 1.6mm FR4?

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KondorFPV

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Just wondering what the velocity factor would be for 1.6mm fr4 board to calculate how long a 1/4 Lambda trace should be made.
Is 50ohm 3mm wide??

Thanks for your kind help,
Tony.
 

You might find this online tool useful: [ **broken link removed** ]
 

You need a good knowledge of your er (at this frequency), since FR4 have widespread er values. Approx. from 4 to 5 depending on the manufacturer.
 

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