how can add antenna be used for both rx and tx, and how can rx and tx be amplified?

It sounded like his complaint was about aiming the thing, which kind of makes it a whole different order of problem, or at least, we need more information.

Thanks, Rich

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Rich Grise
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Assuming that the "base" station is fixed, a large biconical antenna may give you the horizontally omnidirectional gain you need. The thing would probably be 6 foot diameter and 2 foot tall. This should give you between

8 to 12 dB gain. Flatland assumed.
--
 JosephKK
 Gegen dummheit kampfen die Gotter Selbst, vergebens.  
  --Schiller
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joseph2k

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