-----Original Message-----
From: Justin Crooks
<jcrooks@WYOMING.COM>
To: PICLIST@MITVMA.MIT.EDU
<PICLIST@MITVMA.MIT.EDU>
Date: Thursday, March 26, 1998 8:16 PM
Subject: Re: Programmer sold, RF freq's


snip
>I remember right, 16.5 cm for 418MHz,
15.5 cm for 433MHz (1/4 wave, you can
>do the math).  Use a thick, straight
piece of wire or something.  We even
>went so far as to use a digital caliper
when cutting the antenna (with good
>results.  Of course, we were probably
overly anal).  Good luck!!!
>
the formula is Length = speed of
light/freq - 5% for end losses, that
will give you
full wave. If you want 1/4 wave devide
lenght by 4, but try and use full wave
if possible.