Wayne Watson wrote:
For example, it would seem unlikely an x-ray antenna (I believe
there is such a thing on one of the space satellites used in astronomy)
would be anything like one used to receive TV. Certainly the 'antenna' to
collect visible light is different than that for AM radio.

Is it easier to pick up a twig than to pick up a tree?
Methinks you need a better understanding of wavelength.
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73, Cecil http://www.qsl.net/w5dxp