Sander Style For video?

[iPeel]

Based on this formula,  Why does Sander make the 433Mhz monopoles 164mm long? Surely they should be 173mm?

Because you are using the speed of light in a vacuum, not the speed of light through copper. Multiply the result by a shortening factor of 0.95 for copper and you should get your result.

The dielectric effect of the material you surround the antenna with (e.g. RC aerial tubing) also plays a small part.



Neil.

[Ynot6]

Er, are we sure light only does 300m per second? I beg to differ :laugh:

you're quite right steve, but we use 300 and megahertz, gets rid of all those 0s.

[Ynot6]

devonian, frequency in megahertz.

[skyscraper]

Er, are we sure light only does 300m per second? I beg to differ :laugh:

38 mph apparently (17 m/s) ...

    http://abcnews.go.com/Technology/story?id=99111   :)

regards
Andy

[BlueFlyer]

some good information and links here, will take a proper read when I'm home.