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Wavelength

Description
Assists ham radio operators in converting a frequency to its wavelength in feet or inches. Other uses include acoustic measurement and adjustment, microphone placement, room tuning, and speaker positioning....View A Script Demo


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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<HTML>
<HEAD>
<META NAME="Generator" CONTENT="TextPad 4.4">
<LINK href="general.css" rel="stylesheet" type="text/css">
<SCRIPT LANGUAGE="JavaScript">
<!-- Original:  Jon Bronisz (webmaster@frequencyzone.com) -->
<!-- Web Site:  http://www.frequencyzone.com -->
<!-- Begin
function wavelength(freq, amount, form) {
form.feet.value = amount / freq;
form.inches.value = form.feet.value * 12;
}
//  End -->
</script>

</HEAD>

<BODY Background=../graphics/grayback.jpg>
<center><BR><BR><BR>
<form>
<table>
<tr>
<td align=center>
<input type=text size=8 value="" name=freq>MHz
<input type=button value="WL"     onClick="wavelength(this.form.freq.value, 984, this.form);">
<input type=button value="1/2 WL" onClick="wavelength(this.form.freq.value, 468, this.form);">
<input type=button value="1/4 WL" onClick="wavelength(this.form.freq.value, 234, this.form);">
</td>
</tr>
<tr>
<td>
 = <input type=text name=feet size=15> ft. (or <input type=text name=inches size=15> inches.)
</td>
</tr>
</table>
</form>

</center>
</BODY>
</HTML>
 

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