If 70 m is the diameter, not radius, that area is a factor of 4 too high. Should be more like ~3850 m^2. Still physically impossible at that size but it does make the required size a bit more tenable.
Antennas at Goldstone Deep Space Communications Complex
Name Diameter Description
DSS 12: "Echo" 34m Decommissioned in 2012.
DSS 13: "Venus" 34m Beam waveguide antenna (BWG) on altazimuth mount, located in Venus, California. ~910 m2 aperture.
-> DSS 14: "Mars" 70m Cassegrain reflector on Alt/Az mount. ~3850 m2 aperture.
DSS 15: "Uranus" 34m "High Efficiency" reflector on Alt/Az mount
DSS 24, 25, 26: "Apollo" 34 m BWG reflector on Alt/Az mount
DSS 27, 28: "Gemini" 34 m BWG reflector on "High Speed" Alt/Az mount
And they provided an interesting tidbit of information about some of the units mentioned. I didn’t read it as anything negative towards your comment at all. Both your’s and their’s added to the conversation.
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