Wha Happen?

[ampulman]

This AM, a new system (Camden County P25) appeared in the DB. I entered it into my 396T, but no normal activity noted.

Just checked the DB about 4:50 PM EDT and the system was not present.

Anyone know what happened?

On another note, this is the first P25 system that I am monitoring. When holding on the system, there is no 'control channel sound'. If this typical for P25 systems, or is it due to the fact that it is not doing normal transmissions?

There were 2 TGs noted (testing only) in the DB, but the system was not indicating any TG activity. When holding, the System ID and Site information, along with a DAT indicator, are shown.

Any info appreciated.

Amp

 

[nd5y]

When holding on a P25 control channel the 396T mutes the audio. You won't hear anything.
If it is decoding the control channel the display will show LNK or DAT, SID and any active talkgroups. Pressing the Func button will show WACN isntead of SID.

 

[Monoxide16]

does anyone no when camden county is making the switch and will we be able 2 monitor them

 

[W2SJW]

The system is in 'staged' mode right now - once more confirmed info comes down the pipe, the admin that staged it will make it public. The test site data shows 800 MHz channels, but this new system is supposed to be 700 MHz when deployed...

 

[Monoxide16]

hey does anyone no whats up with Gloucester twp PD Dispatch channel comming in really strange

 

[Monoxide16]

sorry for all the questions but now i just herd them say switch back over to secondary anyone no the frequency?

 

[ampulman]

When holding on a P25 control channel the 396T mutes the audio. You won't hear anything.
If it is decoding the control channel the display will show LNK or DAT, SID and any active talkgroups. Pressing the Func button will show WACN isntead of SID.

Thanks for that info. I will keep an eye on it and report any findings.

Amp

 

[Skypilot007]

I'm not seeing the new system in the database. Was it removed. Can someone post up any information they have on it so I can program it. Thanks...

 

[jcardani]

FYI,

Unitrunker shows that the system is TDMA. Not sure if that means TDMA capable or that it will be TDMA only. The latter is not good news for scanner owners for sure.

 

[Audiodave1]

Here is the known system info.

System Description: Camden County, New Jersey
Callsign: WQJZ399


Site:Lindenwold Frequencies
854.3625 CC
854.1875 Alt CC
854.1375 Voice Channel

TG 101,102 were heard active with techs.

Dave

 

[jcardani]

FYI,

Unitrunker shows that the system is TDMA. Not sure if that means TDMA capable or that it will be TDMA only. The latter is not good news for scanner owners for sure.

From Unitrunker (the person): When TDMA is shown in the Unitrunker program it means the system is TDMA capable.

 

[ampulman]

Camden Cnty need for non-monitorable system

In listening to Camden County transmissions (not including police) over the years, I have heard any tnx that required 'privacy', but understand their need for that capability.

Even the EMS units reporting patient info on the hospital band, do so in a non-identifiable manner.

So, we can only hope.

Amp

 

[ericcarlson]

This system may be viewed here:
Camden County Trunking System, Lindenwold, New Jersey - Scanner Frequencies

 

[Monoxide16]

whats up with Camden County PD Zone 5 Dispatch comming in very low

 

[ampulman]

Here is the known system info.

System Description: Camden County, New Jersey
Callsign: WQJZ399


Site:Lindenwold Frequencies
854.3625 CC
854.1875 Alt CC
854.1375 Voice Channel

TG 101,102 were heard active with techs.

Dave

I'm confused. What is with the 'voice channel'? Is this a discrete frequency 'outside' of the control channel's pervue? My impression was that P25 systems were 'control channel' only. My scanner (396T) does not offer a CC only option for this system, which seems to support that.

I only programmed the control/alternate frequencies. Should the VC be programmed? I have not heard any audio while monitoring this system.

Amp

 

[bezking]

The Voice Channel is the channel that actually carries, well, the voice of the people using the system. Control Channel Only means the Scanner will be told by the TRS where the channel is, as opposed to the user having to program every voice channel into his scanner.

The Control Channel exists to point the Radio Users to a free Voice Channel, where they can send and receive voice traffic.

HTH

 

[ampulman]

The Voice Channel is the channel that actually carries, well, the voice of the people using the system.

So, are you saying there is only one voice channel? Kind of negates the need for a trunked system

Control Channel Only means the Scanner will be told by the TRS where the channel is, as opposed to the user having to program every voice channel into his scanner.

I agree. My comment should have stated that (I believe that I read somewhere) P25 systems are, by default, CC only.

The Control Channel exists to point the Radio Users to a free Voice Channel, where they can send and receive voice traffic.

Again, I agree. So, what is the purpose of including a single voice channel information. Is (was) this the only voice channel being used up until now? If I don't program it, will I hear any traffic?

Amp

 

[Skypilot007]

I haven't logged a single hit in 2 days on this system. Not much testing going on lately I suppose. Anyone else hear anything?

 

[ampulman]

I haven't logged a single hit in 2 days on this system. Not much testing going on lately I suppose. Anyone else hear anything?

Would like to know approx. time of day, you heard it. Also, was this a brief transmission, or was there continued back and forth?

So, what do you typically hear during the testing phase. Is there a mobile unit running around asking the base if: "Can you hear me now?......good".:lol:

Amp

 

[bezking]

So, are you saying there is only one voice channel? Kind of negates the need for a trunked system

There are probably more. The fact that only one voice channel was used only means that one voice channel was needed, this does not necessarily mean that only one voice channel is available...

Is (was) this the only voice channel being used up until now?

Yes.

If I don't program it, will I hear any traffic?

As long as you set the system in your scanner to CC Only, you shouldn't have to program the voice channel.

HTH