From the City Blog:
DPS continues to progress towards the radio system replacement that was approved last year. The selected vendor, Motorola, has been conducting significant work on installation of the infrastructure at DPS headquarters. It is anticipated that in early SEPTEMBER testing will begin. The final system acceptance is scheduled for December 2013.
The new radio system is part of the larger Silicon Valley Regional Interoperability Authority system design. This interoperable radio system is designed to eventually include all of the county agencies in both the police and fire disciplines. The City of Sunnyvale, City of Santa Clara, Santa Clara County and the City of San Jose have partnered on this initial deployment called Stage 1 and 2. When these stages are complete the City of Sunnyvale and the City of Santa Clara will completely transition from the legacy systems to the new.
With this new system every agency in the county will have a seamless ability to communicate via the radios we carry every day. Currently there several disparate systems in the county in which some of them cannot communicate with others. With this new system there will be one very robust infrastructure utilizing the latest in technology. In preparation for this very significant change to DPS a large group of 22 people has been established to address all of the implementation considerations. The current technology we are using has been very reliable but has reached beyond its useful life and has begun to have periods of difficulty reiterating the need for the new system.
So it looks like San Jose and County Communications are in on it too now.