Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Oct 12, 2013
The romance of the radiotelegraph service. This service utilized the high frequency spectrum known as "shortwave" (from 3 MHz up to 30 MHz) as well as the longwave and medium frequency spectrum (below 3 MHz). This is a short film about communication to and from New Zealand on these shortwaves, using Morse code (eventually, using CW modulation). This film is a 1939 Government film scanned to 2K from a 16mm combined B/W reduction print. It is from ArchivesNZ ( http://YouTube.com/ArchivesNZ ) and is licensd under Creative Commons Attribution, reuse allowed.