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The OPP system you hear today,is over 15 years old. Its one of the largest trunked VHF system in North America if not the world.

However if you have tuned in ( most freqs listed within this site ) you have heard a CLUCK , CLUCK noise on the system.
Unlike some smaller PD's , the OPP never meant in any way to shut out the scanner listener.
What you hear is this:

Like a cell phone site, your call is transfered from tower to tower, same hold true for the OPP, they use towers as well ( see tower listings ).

The noise that locks up some scanners is a MARKER or DATA TONE .

Example

Say a opp unit is drivng from point A to point B , the towers constaly check the signal strength from the OPP cruiser.
If the signal falls below S- 5, the towers will switch the car to a closer tower.

Now in order to trunk the cars, a data marker must be sent, thats the noise that will lock up some scanners.


This tone is 107.2 Hz , and many newer scanners have a built in tone board that will silence the noise.

Also the OPP cars are somewhat sophiscated !
Before an officer can use a car, he / she must use the console in the crusier to LOG ON TO A TOWER.

There is two types of log ons, HARD ID and SOFT ID.
Hard ID's log the car into the comm centers system, soft ID's are the officers badge number.

Any further information about the console may compromise security and or safety.

Listed below is is the complete Tower freqs :

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OPP TOWERS

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C-I-CALL 866-01250

C-I-TAC 1 866-5125

C-I-TAC 2 867.01250

C-I-TAC 3 867.51250

C-I-TAC 4 868.01250


1A BASE
141.390
107.2

1A MOBILE
139.470
107.2

1B BASE
141.195
107.2

1B MOBILE
139.185
107.2

1C BASE
141.300
107.2

1C MOBILE
139.950
107.2

2A BASE
141.435
107.2

2A MOBILE
139.155
107.2

2B BASE
141.690
107.2

2B MOBILE
139.455
107.2

2C BASE
143.655
107.2

2C MOBILE
139.065
107.2

3A BASE
141.630
107.2

3A MOBILE
139.260
107.2

3B BASE
141.405
107.2

3B MOBILE
139.095
107.2

4A BASE
141.705
107.2

4A MOBILE
139.110
107.2

4B BASE
141.495
107.2

4B MOBILE
139.290
107.2

5A BASE
141.360
107.2

5A MOBILE
139.215
107.2

5B BASE
141.720
107.2

5B MOBILE
139.485
107.2

6A BASE
141.450
107.2

6A MOBILE
139.200
107.2

6B BASE
141.540
107.2

6B MOBILE
139.305
107.2

7A BASE
141.555
107.2

7A MOBILE
139.320
107.2

7B BASE
141.675
107.2

7B MOBILE
139.350
107.2

8A MOBILE
138.345
107.2

8B BASE
142.665
107.2

8A BASE
142.365
107.2

8B MOBILE
138.645
107.2

8C BASE
143.100
107.2

8C MOBILE
139.080
107.2

9A BASE
143.190
107.2

9A MOBILE
139.140
107.2

9B BASE
143.640
107.2

9B MOBILE
139.500
107.2

9C BASE
142.830
107.2

9C MOBILE
139.395
107.2

COMMON
142.770
107.2

REPEATER
411.3125
107.2

SIMPLEX
139.175
107.2

SIMPLEX
140.970
107.2