Marconi's Transatlantic Telegraph Service

Spark Transmitter

Marconi Towers, Cape Breton Island
Nova Scotia

Figure 11

Spark transmitter at Marconi Towers, Cape Breton Island, Nova Scotia
Figure 11
Spark Transmitter, Marconi Towers
The large wheel in the middle of the photograph,
driven by the electric motor behind it, is part of a
rotary gap spark discharger. When pairs of studs on
the rim of the wheel passed between two electrodes,
hidden from view, a high voltage spark jumped the gap.
Three large turns of the antenna transformer can be seen
in the background. It transferred radio energy from
the spark discharge to the antenna outside.

The Wayback Machine has archived copies of this document:
Spark Transmitter, Marconi Towers, Nova Scotia

Archived: 2001 April 20

Archived: 2001 June 28

Archived: 2002 September 12

Archived: 2003 June 04

Archived: 2004 May 13

Archived: 2005 February 15

Go To:   Marconi's Three Transatlantic Radio Stations in Cape Breton
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First uploaded to the WWW:   2001 March 25
Latest update:   2006 November 11