Land Mobile Radio

How to minimize the effects of time-delay interference

In this article, we examine ways to minimize TDI’s effects, which will cripple system performance — even when excellent RF coverage exists.

A look at time-delay interference

Does your simulcast radio system seem to exhibit improved range and performance when certain transmitters are turned off? In almost every case, this is an indication of improper system operation and that your system needs on-site optimization.

News

Motorola scores first 900 MHz ASTRO 25 digital-radio sale to public utility (with related video)

ComEd — the largest electric utility in Illinois, serving the Chicago and Northern Illinois areas — recently signed a $22 million contract with Motorola Solutions for the company’s a 900 MHz ASTRO 25 digital trunked radio system.

Commentary

Avoid getting into a box

Because some users perhaps are not properly installing trunked systems — therefore causing significant interference — this is a good time to review the FCC’s rules on VHF/UHF trunking.

Hot tip: What can happen if we don’t move to narrowband operation?

Your license will be in violation of the FCC Rules and you could be subject to FCC enforcement action, which may include a monetary fine, admonishment or loss of your license.

Video

IWCE Video Showcase: Hytera

Urgent Communications editor Glenn Bischoff speaks with Gary Lorenz, Hytera’s vice president of sales and marketing, about the company’s aggressive focus on TETRA in North America, as well as digital mobile radio worldwide, both in terms of infrastructure and handsets.

News

GAO: Mission-critical voice over broadband not in the near future

Public safety likely will rely on LMR systems for mission-critical voice for “perhaps even 10 years or more,” according to the GAO report.

Kenwood debuts NEXEDGE additions at IWCE

Kenwood this week at IWCE displayed its new NEXEDGE IP dispatch console, designed to be a pure end-to-end IP communications system for NEXEDGE trunked repeaters. The console can accommodate more than 50 positions and 200 lines.

News

Motorola introduces new MOTOTRBO radios (with related video)

The SL Series of sleek DMR handsets is designed to serve the communications needs primarily of customer-facing users.

Industry points to multiple warning signs about narrowbanding

Last year, the FCC indicated that 225,000 licensees needed to narrowband their systems, but only about 20% of those have completed the task, according to Peter Moncure, CEO of RadioSoft.

How to minimize the effects of time-delay interference

A look at time-delay interference

News

Motorola scores first 900 MHz ASTRO 25 digital-radio sale to public utility (with related video)

Commentary

Avoid getting into a box

Hot tip: What can happen if we don’t move to narrowband operation?

Video

IWCE Video Showcase: Hytera

News

GAO: Mission-critical voice over broadband not in the near future

Kenwood debuts NEXEDGE additions at IWCE

News

Motorola introduces new MOTOTRBO radios (with related video)

Industry points to multiple warning signs about narrowbanding

Commentary

Reflections on recent LTE outages

Necessity indeed is the mother of invention

LTE and liability: Why the fire service must move forward with digital incident command

Events

UC Ezines

IWCE 2019 Wrap Up

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