Shortwave radio were required. It was also difficult to beam the radio wave directionally with long wave, resulting in a major loss of power over long distances. Prior to the 1920s, the shortwave frequencies above 1.5 MHz were regarded as useless for long distance communication and were designated in many countries for amateur use. Guglielmo Marconi, pioneer of radio, commissioned his assistant Charles Samuel Franklin to carry out a large scale study into the transmission characteristics of short wavelength waves and to determine their suitability for long distance transmissions. Franklin rigged up a large antenna at Poldhu Wireless Station, Cornwall, running on
Ivan Marconi Ivan Marconi Ivan Marconi (born 25 October 1989) is an Italian footballer who plays for Serie B club Cremonese. Born in Brescia, Lombardy, Marconi started his career with Internazionale. In 2006–07 season, he was awarded no.41 shirt of the first team as a member of Primavera team. In mid-2007, he was transferred to Lumezzane for free but loaned to Brescia on 31 August 2007. In the next season he was signed by Sampdoria youth team. Marconi received a call-up from the first team on 20 January 2009. In January 2009 he was sold to Gubbio from Lumezzane in co-ownership deal,