-----Original Message-----
From: "Joe M."

P25 Phase II is TDMA. AFAIK Motorola never made a TDMA Type II system.

Type II and Phase II are not the same thing.

Correct. Motorola type 2 and P-25 phase 2 are not the same.

Many P-25 trunked systems (including the one I run for a living) start off life either exclusively or primarily phase 1. In many cases this is because of large numbers of non-phase 2 capable subscriber radios. We still for example have thousands of XTS-5000 portables and XTL-5000 mobile radios that are P-25 phase 1 only. Over time, radios will be replaced, and any radios we buy are phase 2 capable, but it will be a while before the last non-phase 2 capable radio is retired.

There are also requirements (both hardware and licensing) to make the infrastructure phase 2 capable.

One of my standard recommendations for someone buying a scanner today is that you should buy a phase 2 capable scanner. Even if you don't need that capability today, you likely will before that scanner dies. I follow my own advise. My last scanner purchase was a SDS100 and the next one likely will be a SDS200

73
-----
Jim Walls - K6CCC
jim@...

On 9/2/2021 3:14 AM, Dennis Falk wrote:

It appears both the City and County of San Diego are using both Phase I
and Phase II. (The city's Phase II is actually a Motorola Type II, but
this is a P25 compatible system.) Most operations seem to be Phase I,
when I was there, last, but that was just a few months before COVID.

(HP-2 and later such scanners support Phase II; HP-1 doesn't. I have
HP-2. The only regret I have is that it doesn't support NDXN or DSTAR.)

d.m.falk
Eureka, CA
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[mch@...]

_._ ,_._,_

You don't specify which scanners, but I assume the database-driven scanners like HomePatrol-1/2 and newer models. Short answer is yes, as long as it supports the P25 system, at the very least.

San Diego County, as with many counties throughout California, has unified their city and county-wide services into a regional P25 trunked system that is accessable to any scanner capable of receiving such.

And yes, the database is still kept up, every week.

(I own a HomePatrol-2 with the Extreme upgrade- Worth it!- and yes, I've used it when I've visited San Diego. I live in the opposite end of the state, in Humboldt County, and we're about to do the same as so many counties have, throughout the state.)

d.m.falk