W9WI.com - TV Database

<script language="Javascript">
function chan2freq(obj)
{
	chan=obj.channel.value;
	chan=parseInt(chan);
	freq=0;
	if (chan<2 || chan>83)
	{
		freq=999;
	}
	if (chan>1 && chan<5)
	{
		freq=54+6*(chan-2);
	}
	if (chan>4 && chan<7)
	{
		freq=76+6*(chan-5);
	}
	if (chan>6 && chan<14)
	{
		freq=174+6*(chan-7);
	}
	if (chan>13 && chan<84)
	{
		freq=470+6*(chan-14);
	}
	obj.visual.value=freq+1.25;
	obj.aural.value=freq+5.75;
	obj.bottom.value=freq;
	obj.top.value=freq+6;
	if (freq==999 || chan==37)
	{
		obj.visual.value="Invalid";
		obj.aural.value="channel";
		obj.bottom.value="";
		obj.top.value="";
	}
}
</script>
<h3>
<i>W9WI.com</i></h3></h3>
<i>TV technical information for DXers</i><br>
</i>(Doug Smith, Pleasant View, TN, USA EM66)<br>
<H2>USA TV channel frequencies</H2>
<A HREF="http://www.w9wi.com/index.htm">W9WI.com</A><P>
<FORM>
<TABLE>
<tr><td>Channel:</TD><TD><INPUT type="text" name="channel" size="8"></TD></TR>
<tr><td>Channel limits:</TD><TD><INPUT type="text" name="bottom" size="8"></TD><TD>-</TD><TD><INPUT type="text" name="top" size="8"></TD><TD>MHz</TD></TR>
<tr><td>Visual carrier:</TD><TD><INPUT type="text" name="visual" size="8"></TD><TD>-</TD><TD><INPUT type="text" name="aural" size="8"></TD><TD>MHz</TD></TR>
<TR><TD><INPUT type="button" value="Calculate" onclick="chan2freq(this.form)"></TD><TD><INPUT type="reset" value="Clear"></TD></TR>
</table>
</FORM>
<P>&copy; D. Smith W9WI 2008</P>
<P>Page created </P>
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