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The Marconi Centre and Monument at Poldhu

TR12 7JB Mullion, Great Britain (UK) (Cornwall)
Address Poldhu Road
 
 
Floor area unfortunately not known yet  
 
Museum typ Exhibition
Morse technology
  • Amateur Radio / Military & Industry Radio

Opening times
 October-April: Sunday: 13:30-16:30; Tuesday and Friday: 19:00-21:00
May, June, September: Tuesday, Friday: 13:30-16:30; Wednesday, Sunday: 19:00-21:00
July and August: Wednesday, Thursday and Sunday: 13:30-16:30
Bank Holidays (except Christmas, Boxing/St Stephen's and New Year's Days): 13:30-16:30

Admission
Status from 12/2020
 Free entry, donations expected.
Contact
Tel.:+44-1326-24 16 56   
Homepage
to Location / Directions
www.marconi-centre-poldhu.org.uk
not in present exhibition
Our page for The Marconi Centre and Monument at Poldhu in Mullion, Great Britain (UK), is not yet administrated by a Radiomuseum.org member. Please write to us about your experience with this museum, for corrections of our data or sending photos by using the Contact Form to the Museum Finder.
Location / Directions
N50.030375° W5.263912°N50°1.82248' W5°15.83469'N50°1'49.3488" W5°15'50.0816"
Mullion is a civil parish and village on the Lizard Peninsula in south Cornwall, England, United Kingdom. The nearest town is Helston approximately 5 miles (8 km) to the north.

The 34 bus service runs from Redruth via Helston to Poldhu, terminating at the Lizard.

The South West Coastpath runs close to the Centre. To access leave the path at the Marconi Monument and walk across to the Marconi Centre.
Description

Wikipdia:
Poldhu is the site of one of the main technological advances of the early twentieth century when in 1901, a wireless signal was sent to St John's, Newfoundland, by Marconi. The technology was a precursor to radio, television, satellites and the internet, with the earth station at Goonhilly Downs a nearby example.

Marconi built the first antenna beginning April 1901 to transmit the first transatlantic radio message to Canada. It consisted of 20 thin wooden masts in a circle supporting 200 wires in an inverted cone shape attached to the transmitter building.

When it blew down in a storm 17 September 1901 he hastily erected a temporary antenna consisting of 54 wires suspended in a fan shape from a cable between two 160 ft. poles, which was used in the actual transatlantic experiment.

After the experiment in 1902 for permanent transatlanic service he built this antenna consisting of 200 wires in an inverted pyramid supported by four sturdy 210 ft (64 meter) lattice towers. The reason for the multiple wires of the antenna was to increase its capacitance to ground, to allow it to store more energy during each spark. An innovative 25 kilowatt inductively coupled spark gap transmitter in the station, designed by John Ambrose Fleming, produced radio waves probably at a frequency of about 850 kHz.

In 17 October 1907 it inaugurated the first regular transatlantic radio service, communicating by Morse code with a similar station in Glace Bay, Nova Scotia, Canada. These were the most powerful radio stations in the world at the time.
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