Stamp: Frank - dated 1914 (United States of America 1914)
Frank - dated 1914 (United States of America 1914)
01 January (United States of America ) within release Tropical Radio Telegraph Company goes into circulation Stamp Frank - dated 1914 face value Complimentary No Face Value
Stamp is square format.
With unique control number in red Signature of the company's president. Sn mentions this company's stamps but does not list them, stating that there is no evidence that they were ever actually used.Stamp Frank - dated 1914 it reflects the thematic directions:
Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates oscillating electrical energy, often characterized as a wave. They can be received by other antennas connected to a radio receiver, this is the fundamental principle of radio communication. In addition to communication, radio is used for radar, radio navigation, remote control, remote sensing, and other applications.
Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message. Thus flag semaphore is a method of telegraphy, whereas pigeon post is not. Ancient signalling systems, although sometimes quite extensive and sophisticated as in China, were generally not capable of transmitting arbitrary text messages. Possible messages were fixed and predetermined, so such systems are thus not true telegraphs.
