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March 10th 06, 01:16 AM
posted to rec.radio.shortwave
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Antenna in the Air.
On Thu, 09 Mar 2006 23:55:01 GMT, Bob Miller
wrote: On Thu, 9 Mar 2006 17:17:52 -0600, wrote: How far up in the air can a wire antenna for shortwave radio be (for instance,held aloft with a helium balloon,ala Switzerland in World War Two) and still be effective for receiving shortwave radio signals? cuhulin I imagine any height will work; HF radios of WWII were common in our aircraft. The only limits depend on how close you are to an airport; antenna heights are regulated around flight paths. bob k5qwg Airplanes that fly across the oceans still have HF radios. |
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