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Old May 12th 05, 03:16 AM
 
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Default Student Rocket Part II

I'm still playing with the rocket antenna.
The rocket body is a 12 inch diameter aluminum tube.

If I want to put a horzintal dipole on the body I can do one of two
things.


1)Cut an Oval or oblong hole in the skin up near the electronics and
then put in a fibnerglass panel, on that panel I put a cu foil dipole.

How much bigger does the opening around the dipole have to be to not
reduce the efficency of the antenna.

2)I can put a thin dialectric patch on the outside of the rocket and
put the antenna on that.
How thick would a fiberglass dielectric need to be for a good antenna?



I now have a 900Mhz capable bird so I can trim the antenna for minimum
SWR.

This sunday is my last chance to make all of this work so I'm running
out of time.


Paul (Kl7JG)





 
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