Rohde & Schwarz

GPIB, IEEE 488 Standard Tutorial

All the essentials of the GPIB, General Purpose Interface Bus or IEEE 488 bus used for the control of test instruments and data acquisition.


What is GMSK Modulation?

Essential details of Gaussian Minimum Shift Keying or Gaussian filtered Minimum Shift Keying, GMSK, the modulation scheme used in GSM and many other communications systems.


Types of Diode

Summary of the different types of diodes used in electronics with links to further in-depth pages on individual diode types with circuit design details.

Facts of the day

25 July 2014

History - It was on 25th July 1909 that the French aviator Louis Bleriot became the first man to fly across the English Channel in a monoplane.

Quote - Those who do not mind asking silly questions become scientists." - Leon Lederman

The way things are - A meeting is an event at which the minutes are kept and the hours are lost.


Wi-Fi 802.11 Channels & Frequencies

List of Wi-Fi / WLAN / 802.11 bands, their channel frequencies and bandwidth, 2.4 & 5 GHz allocations worldwide, & summary of which WiFi channels can be used together. news from

Applied Optimization Methods for Wireless Networks
Applied Optimization Methods for Wireless Networks

Professor Y. Thomas Hou, Dr Yi Shi, Professor Hanif D. Sherali
The use of wireless networks has increased dramatically in recent years. In...
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