p25 – Southern California Monitoring Association

Lompoc Breaks Ground for New Advanced P25 Radio System

December 31, 2024

Lompoc, CA – The City of Lompoc has embarked on a significant upgrade to its communication infrastructure with the groundbreaking of a new P25 (Project 25) radio system. This $4.6 million project promises to revolutionize how first responders and city departments interact, ensuring enhanced safety, efficiency, and interoperability across various services. The Groundbreaking Ceremony On […]

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Article

Orange County Project 25 Upgrade Report

November 7, 2017

The following article is from the SystemWatch Newsletter published by the Orange County Sheriff Department Communications and Technology Division. As all of you know, we are in the midst of a major upgrade to our 800 MHz Countywide Coordinated Communications System (CCCS). This upgrade provides several key enhancements to the current system. First and foremost, it

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News

Las Vegas Sheriff on Their New P25 Radio System

April 6, 2015

Sheriff Joseph Lombardo of the Las Vegas Metropolitan Police Department talks about replacing their relatively new Harris Open Sky radio system with a P25 Phase II system from Motorola. According to the Sheriff, the Open Sky system (which went online in 2010) never worked right but officers love the new P25 system. “Public safety lives and breathes

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Article, News

A New Hurdle for L.A. County Emergency-Radio Effort: Cell Tower Fears

March 24, 2015

After the 9/11 terrorist attacks, local governments began talking about a new emergency communications plan that would connect every cop and firefighter in Los Angeles County on one system. But to the dismay of many, the radio network is still not a reality. For the last six years, officials have weathered delays caused by technological

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SCMA

SCMA Presentation by Wayne Smith, Ph.D.

July 10, 2014

At our July meeting, club member Wayne Smith, Ph.D. (N6LHV) gave a talk about Software Defined Radios. Wayne demonstrated how a $25 USB dongle designed to receive digital TV broadcasts can be used as an inexpensive SDR and spectrum analyzer. Professor Wayne demonstrated how, unlike current scanners, his SDR is able to decode MotoTrbo (DMR), NextEdge

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News

Riverside County Sheriff Moves to Encrypted Radio System

January 7, 2014

On Sunday, January 5th, Riverside County rolled out its much-anticipated and long-delayed public safety radio system that officials say will stretch the signal’s reach and streamline communication between agencies during major emergencies. The system, known as Public Safety Enterprise Communication (PSEC) is a P25 Phase II system and all communications are encrypted. The new system

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News

San Bernardino County to get New Radio System – for $158 Million

December 18, 2013

After six years, San Bernardino County is finally on its way to overhauling its antiquated public safety radio system, and will be getting a state-of-the-art digital system at a cost of more than $158 million. The Board of Supervisors on Tuesday entered into agreements with Motorola Solutions and Aviat U.S. and authorized contract expenditures of

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News

Pasadena PD Comms are Now P25 Encrypted

January 9, 2012

As of January 7, 2012, the Pasadena Police Department’s radio communications have switched from analog to digital, preventing media outlets and radio enthusiasts from monitoring police calls. The police department will make its $7 million leap forward from analog to encrypted digital transmission of radio conversations in a move city officials insisted was not about

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News

New Motorola APX 4000 Radio Series Announced

October 25, 2011

Motorola Solutions, Inc. Monday announced the newest addition to its APX P25 Phase 2 TDMA mission critical two-way radio series. The APX 4000 portable is designed to provide public works, utilities and rural public safety users with a durable and compact radio with key features. All radios in the Motorola APX series are P25 Phase

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News

Digital Migration Percentage to Double in Next 5 Years

September 14, 2011

It’s taken a decade and half for 15 percent of the world’s licensed mobile radio users to move from analog to digital; however, the next five years will see this percentage more than double. This is one of the key findings from IMS Research’s report “Licensed Mobile Radio – World – 2011.” Digital technologies were

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