From IEEE Milestones Wiki

This the updated citation based upon the advocate's and administrator's comments original posted August 1st.

Revised Citation reflecting advocate's and administrator's comment. -- W2ots (talk) 04:22, 1 August 2019 (UTC)

On November 5th, 1921, President Harding’s telegraphic transoceanic message inaugurated the world’s most powerful transoceanic radio facility, RCA Radio Central. On more than 7000 acres at Rocky Point and Riverhead, NY, its Alexanderson 220KW, 18.3KHz transmitters and Beverage long-wire receiving antennas provided reliable worldwide radio communications. The research laboratory developed diversity radio reception, rhombic and folded-dipole antennas, the first transoceanic single side-band channels and commercial FAX service.