Plano Police Scanning Information from anonymous sources:
Radio Codes & Signals

Signal 5 - Meal Break  (usually called 'Long 5')

Signal 8 - Drunk Driver

Signal 27 - Fatality (either accidental, murder, or natural death)

Signal 30 - Arrest

Signal 40 - Civilian being driven to a destination

Signal 70 - Lo-Jack (or similar) activation

10-96 - a wacko.

800 - Police Station (909 E 14th St.)

802 - Police Substation on West side (Democracy Dr.) where 'D Sector' and Traffic units are based.

EOC - Emergency Operations Center  (i.e., Dispatch)

MCP - Medical Center of Plano

Code 9 - A stolen car or a person with an open arrest warrant.

Code 9F - Felony warrant.

Code 10 - Criminal history.

Code 10 has a bunch of subcodes that describe the offenses.  They generally use  the first letter of the offense, e.g., A: Assault  B: Burglary  D: Drugs/Alcohol  F: Felony  L:Larceny  N?: Narcotics?  O:Obstruction, etc.   Listen for M: Murder/Manslaughter.

The usual meanings for 10-4 and Code 3.

The City is divided into Four Sectors A,B,C,D. Moving from A to D sector from east to west.

DISP 1/2-- As of a couple months ago (from 5/99), PPD started using a "split city" type deal for these channels. A/B sectors are dispatched on Disp1 and C/D sectors are dispatched on Disp 2. You'll also hear traffic units and Lt's use Command Area 1/2. That'd be A/B or C/D sectors.
All Traffic units, Public safety, School Liaison, Neighborhood officers and non patrol related traffic is dispatched on PPD Disp2 up until 2200hrs, then they move back to PPD Disp1

All Information, NCIC, and TCIC Operations take place on PPD NCIC

Each Patrol Sector has it's own talk around channel Labeled by its sector A,B,C or D.,

Each Division of CID has its own Talk around Channel labeled by that division (Burglary, Cappers, General, ect.) As well as CPU and various other divisions such as K-9. These are for talk around only, but can be quite entertaining to listen to.

On the Late night Shift the K-9 channel is usually quite fun, because they are training with several other departments.

There are three Special Operations Channels labeled OPS1 OPS2, OPS3. These are used to Supplement Disp1 in case of major event, such as a pursuit, officer involved shooting or a call requiring the coordination of several officers. These channels are also used for special events such as the Balloon Festival and Football Games

All Patrol units are designated as a 200 number 210 - 259
210-219 A sector

220-229 B sector

230-239 C sector

240-249 D sector

250-259 D shift (a power shift that covers entire city 1700hrs to 0100hrs)

260-269 these are Off duty officers working security at the High Schools

290 K-9 Units

All CID Personnel are designated by a 300 number

All school liaison, CPU, and internal affairs are designated by 400 number

All traffic units are designated by 270-279 Cars 280-289 Motors

Neighborhood Officers are designated by 700 numbers

Public Safety Officers (civilians) are 900 numbers

Sergeants are Sam number

Lieutenant's are Lincoln numbers

Captains and above have Admin numbers

Any Four digit numbers you hear are probably Officer working some kind of special assignment. Since they're not working a beat, they use their ID numbers. Officers who have a constant ID (Sgt, LT, CID, etc..) use their regular callsign. I guess this is just to cut down on confusion.

I hope this helps people enjoy this great hobby of scanning, which is what sparked my interest of being a police officer in the first place.
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