Emergency Communications Put to the Test in Chicago 14th October 2008 System Integrator CDW-G recently hosted a field exercise to test Chicago’s interoperable communications and related systems that are used to safeguard the public during a manmade or natural disaster.
The most important tool 1st October 2008 At its most basic level, the spectrum analyzer is a frequency-selective voltmeter calibrated to display the rms value of a sine wave. The most familiar
Using cavity filters to mitigate RF interference 1st September 2008 Last month, we discussed various types of RF-resonant cavities. This month the discussion focuses on the actual use of these cavities to mitigate RF interference.
Armed and ready 1st August 2008 Radiation can be found in many forms, from nuclear warheads to crates of bananas. Some forms are life-threatening, while others are not. It’s distinguishing
Taken for granted 1st August 2008 Land mobile radio antennas come in two basic types: the base station or repeater site antenna and the user radio antenna. This article focuses on user
Don’t be fooled 1st August 2008 The masking effect of cable loss may cause your antenna to appear to perform more efficiently than is actually the case. In fact, it is possible to measure
Practical notes about cavity filters 1st August 2008 Quarter-wave resonant cavity filters are used in many RF applications. For instance, they are used in duplexers for repeaters, in transmitter combiners
Aeroflex announces 3 GHz digital RF signal generator 18th June 2008 Aeroflex unveiled the 3020C PXI modular digital RF signal generator that operates at 3 GHz. According to the company, the 3020C has wideband width modulation of up to 90 MHz for broadband communications standards or multi-carrier test applications. Its …
Using directional couplers 1st June 2008 Understanding how they work is the key to getting the most out of them
Virtutech’s test solution deployed by General Dynamics 14th May 2008 Virtutech announced that General Dynamics’ C4 Systems unit is deploying the company’s Simics software—which can simulate satellite ground systems hardware—to test and debug the U.S. Navy’s Mobile User Objective System (MUOS) program prior to its launch. …
Latest 3GPP standards-development work includes new classes of HPUE, progress on mission-critical services 22nd April 2024
Is LMR the best solution for first responders? Should 4.9 GHz license go to the FirstNet Authority? 2 24th March 2024
