PRODUCT BRIEFS 

By: From staff and wire reports

General Dynamics introduces public-safety software General Dynamics announced the availability of its AutoTest software for public-safety radios. The...

Vendors eager to showcase wares 

Power Over Ethernet Power-over-Ethernet (POE) or "Active Ethernet" eliminates the need to run 110/220 VAC power to WLAN and other devices on a wired LAN....

Avian deaths threaten tower design 

By: BY DONNY JACKSON

A Michigan study to determine what causes migratory birds to collide fatally with communications towers could impact the time and money necessary to erect...

Base station planning isn't simple 

By: BY HAROLD KINLEY

Planning and implementing a base station is an involved process requiring knowledge of the desired coverage area. The location must provide coverage of...

Tower workers need safety rules 

By: BY ALAN TILLES

America's wireless buildout continues at a rapid pace. As it extends to more and more rural areas, the utilization of towers as opposed to rooftops in...

Equipment makers think small 

By: BY GLENN BISCHOFF

Mobile radio equipment manufacturers often overlook small municipalities, which don't have the funding or the need, in most cases for large systems costing...

PRODUCT SHOWCASE 

Yellowjacket Yellowjacket receives all 802.11 MACs (specify A or B) for installation, optimization and rogue AP detection. Features include calibrated...

The return loss bridge 

By: By Harold Kinley

The return loss bridge (RLB), sometimes called SWR bridge, is handy for many applications in two-way radio work. It provides a quick and easy means of...

80 Years with E F Johnson 

By: by Bill McCarthy

Denny Blaine points to seams in the corridors while providing a tour of the EFJohnson plant and headquarters in Waseca, Minnesota. He drives around the...

DVSI debuts new half-rate vocoder 

Digital Voice Systems Inc. has introduced a new Half-Rate Vocoder, which represents an advancement in high-performance voice compression for mobile communications....

Exposition program takes shape 

Editor's Note: In an effort to keep readers up to date on the upcoming IWCE conference, we will periodically publish scheduled sessions. Unfortunately,...

Linear rolls out wideband amplifier 

Linear Technology Corp. has introducesd the LT6552, a wideband difference amplifier. Offering common mode rejection at high frequencies (CMRR 60dB at...

Motorola chairman cleans out desk 

Motorola, Inc. announced that Christopher B. Galvin, chairman and chief executive officer, decided to retire. Galvin has agreed to remain as chairman...

SWR, impedance and line loss 

Standing waves on a transmission line affects both the impedance seen at the input and the overall loss of the transmission line the higher the SWR, the...