Wireless telegraphy; a popular exposition.

Mode of access: Internet.

A history of wireless telegraphy, 1838-1899: including some bare-wire proposals for subaqueous telegraphs /

Includes bibliographical references and index.

Maver's wireless telegraphy: theory and practice.

Mode of access: Internet.

International wireless telegraphy : hearing before the Committee on Foreign Relations, United States Senate, Sixty-second Congress, on an International Wireless Telegraphy Convention, with service regulations annexed thereto, a supplementary agreement, and a final protocol, all signed at Berlin on November 3, 1906, by delegates of the United States and those of several other powers. February 21, 1912.

Mode of access: Internet.

The thermionic vacuum tube and its applications,

Mode of access: Internet.

Radiotelefonía española; radiotelegrafía con onda continua. Transmisores, receptores y amplificadores de la C.I.T. Descripción, teoría, funcionamento e instrucciones prácticas para su manejo.

Mode of access: Internet.

QST.

A magazine devoted entirely to amateur radio.

Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise,

"Credit is largely due to Frank D. Graham ... for the authorship of the Guides, and for the original sketches illustrating electrical principles and construction."--Pref. to no. 1.

La télégraphie sans fil et les ondes électriques,

First edition, 1899, has title: Les ondes électriques et la télégraphie sans fil.

Radiotélégraphie pratique et radiotéléphonie,

Mode of access: Internet.

La théorie et la pratique des radiocommunications ...

Mode of access: Internet.

Lehrbuch der drahtlosen Telegraphie /

Mode of access: Internet.

International wireless telegraph : [hearings, Sixtieth Congress, first session.] An international wireless telegraph convention, with service regulations annexed thereto, a supplementary agreement, and a final protocol, all signed at Berlin on November 3, 1906, by delegates of the United States and those of several other powers, and hearings thereon before the Committee on Foreign Relations, United States Senate, ...

Mode of access: Internet.

A survey on key management mechanisms for distributed Wireless Sensor Networks

Wireless Sensor Networks (WSNs) have a vast field of applications, including deployment in hostile environments. Thus, the adoption of security mechanisms is fundamental. However, the extremely constrained nature of sensors and the potentially dynamic behavior of WSNs hinder the use of key management mechanisms commonly applied in modern networks. For this reason, many lightweight key management solutions have been proposed to overcome these constraints. In this paper, we review the state of the art of these solutions and evaluate them based on metrics adequate for WSNs. We focus on pre-distribution schemes well-adapted for homogeneous networks (since this is a more general network organization), thus identifying generic features that can improve some of these metrics. We also discuss some challenges in the area and future research directions. (C) 2010 Elsevier B.V. All rights reserved.

Signals in Communication Engineering History

This paper is a study of various electric signals, which have been employed throughout the history of communication engineering in its two main landmarks: the telegraph and the telephone. The signals are presented in their time and frequency domain representations. The historical order has been followed in the presentation: wired systems, spark gap wireless, continuous wave (CW) and amplitude modulation (AM), detection by rectification, and frequency modulation (FM). The analysis of these signals is meant to lead into a better understanding of the evolution of communication technology. The material presented in this work could be used to illustrate ""Signals and Systems"" and ""Communication Systems"" courses by taking advantage of its technical as well as historical contents.