Davis City PD trunked

[rhvfd10]

Hello, I'm going to school at UCD right now and have a RS Pro-2055 set up to listen to UCDPD, UC Fire, Davis Fire, and Davis PD. I downloaded the programming from the RR database via Win 97. My issue is with Davis PD 's bank. The issue is that I'm not picking up any traffic at all and the only 'noise' I hear on the Davis PD bank what the program calls dispatch channel 1 is a 'jackhammer' noise that comes and goes. All the other trunked banks work fine. I'm just curious if the info in the database is accurate and whether there is an encryption of some sort in effect on the Davis police net.

Thanks!

 

[WayneH]

They use digital and you're using an analog only scanner.

 

[rhvfd10]

Then why am I getting Davis fire which is on the same system and UC's stuff which is on the same Motorola type II smartset?

It's a digital trunked scanner.

 

[selgaran]

Then why am I getting Davis fire which is on the same system and UC's stuff which is on the same Motorola type II smartset?

It's a digital trunked scanner.

City of Davis is a mixed mode analog/digital system. Police Dispatch is digital. Fire Dispatch is analog.

UC Davis is all analog.

If you have a digital capable scanner and it isn't decoding the Davis Police dispatch channel, you probably have something programmed wrong.

 

[inigo88]

The PRO-2055 is NOT a digital scanner. The only Radioshack scanners capable of receiving digital are the PRO-96 and the PRO-2096. Your -2055 decodes CTCSS and DCS (Digital Coded Squelch) tones, but these terms have nothing to do with decoding IMBE ("APCO P25") digital modulation. The jackhammer noise you hear on the PD talkgroup is this digital modulation - and your scanner is unfortunately not equipped to convert this back into understandable human voice.

Sorry but unless you spend the +/- $300 for a used or $500-$600 for a new actual digital scanner (GRE PSR-500/600, RS Pro-96/2096, Uniden 396T/996... etc.) you're out of luck on hearing Davis PD.

 

[rhvfd10]

crud... she all makes sense now... my apologies.

 

[Sac916]

City of Davis is a mixed mode analog/digital system. Police Dispatch is digital. Fire Dispatch is analog.

UC Davis is all analog.

DEC = TGID (Talk Group ID)
Mode = Digital or Analog
Hex = ignore

City of Davis Police Dept

DEC HEX Mode Alpha Tag Description Tag
44240 acd D DPD DSP1 Dispatch 1 Law Dispatch
44272 acf A DPD DSP2 Dispatch 2 Law Dispatch
44304 ad1 A DPD TAC1 Tac 1 Law Tac
44208 acb D DPD TAC2 Tac 2 Law Tac
31696 7bd A DPD TAC3 Tac 3 Law Tac
44112 ac5 D DPD CH 6 Car To Car Law Talk
44176 ac9 D DPD INVES Investigations Law Tac
44080 ac3 D DPD PRKING Parking Enforcement Law Talk
44144 ac7 D DPD TNG1 Training 1 Law Talk
44336 ad3 A DPD COMM Dispatch Comm Ctrs (Davis Disp to Yolo Comm Disp) Interop

 

[rhvfd10]

DEC = TGID (Talk Group ID)
Mode = Digital or Analog
Hex = ignore

City of Davis Police Dept

DEC HEX Mode Alpha Tag Description Tag
44240 acd D DPD DSP1 Dispatch 1 Law Dispatch
44272 acf A DPD DSP2 Dispatch 2 Law Dispatch
44304 ad1 A DPD TAC1 Tac 1 Law Tac
44208 acb D DPD TAC2 Tac 2 Law Tac
31696 7bd A DPD TAC3 Tac 3 Law Tac
44112 ac5 D DPD CH 6 Car To Car Law Talk
44176 ac9 D DPD INVES Investigations Law Tac
44080 ac3 D DPD PRKING Parking Enforcement Law Talk
44144 ac7 D DPD TNG1 Training 1 Law Talk
44336 ad3 A DPD COMM Dispatch Comm Ctrs (Davis Disp to Yolo Comm Disp) Interop

So then I should be able to hear traffic on Dispatch 2, Tac 1, Tac 3, and Dispatch Comm... OK thanks!

 

[Sac916]

crud... she all makes sense now... my apologies.

Nothing to be sorry about - Sometimes knowledge and insight can only be obtained by asking questions.

 

[selgaran]

So then I should be able to hear traffic on Dispatch 2, Tac 1, Tac 3, and Dispatch Comm... OK thanks!

Yes. The only one of those channels that is used even remotely often is Dispatch 2. The others are very very quiet.