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or you could start with the metric speed of light (3e10) then divide by freq in Hz, then divide by 2.54 to get inches, then divide by 12 to get feet, then divide by 2 to get a half wave in feet for the band this question and thread is about.
if you do all that or your version of the same basic formula instead of using the shortcut of 18 feet will you get a significantly different result for all the extra effort? :scratch head:
i guess its good to know the formula but i was just giving him the best simplist answer and im reasonably certain that most people on this forum know that 18 feet is right about a dead on 1/2 wave for cb so it gives a place to start calculating with the vf

[QUOTE="Needle Bender, post: 337983, member: 13339"] [B]or [/B]you could start with the metric speed of light (3e10) then divide by freq in Hz, then divide by 2.54 to get inches, then divide by 12 to get feet, then divide by 2 to get a half wave in feet [B]for the band this question and thread is about.[/B] if you do all that or your version of the same basic formula instead of using the shortcut of 18 feet will you get a significantly different result for all the extra effort? :scratch head: i guess its good to know the formula but i was just giving him the best simplist answer and im reasonably certain that most people on this forum know that 18 feet is right about a dead on 1/2 wave for cb so it gives a place to start calculating with the vf [/QUOTE]

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