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Old May 12th 05, 06:27 AM
John Smith
 
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10-9-8-7-6-5-4-3-2-1... Houston, we have a problem... hopefully NOT!

Warmest regards,
John
--
Sit down the six-pack!!! STEP AWAY!!! ...and go do something...

wrote in message
...
| 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?
|
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|
| 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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