Someone, please, provide some help to me :(

[Vladlenas]

Hello, my scanning brothers I am from Europe (Lithuania). I have purchased new scanner Uniden BC250D and i have some troubles using an trunktracker function. I want to monitoring our police trunking system, but i don`t know a type of this trunking system (maybe Motorola type II, possible, handheld radios used by our police is MTS2000 or MTS1000). I have monitored some frequencies, on which our police talking theirs conversation. Frequencies is:

1. 161.400 Mhz FM
2. 161.550 Mhz FM
3. 161.700 Mhz FM
4. 161.900 Mhz FM
5. 155.255 Mhz FM
6. 155.275 Mhz FM
7. 155.400 Mhz FM
8. 155.575 Mhz FM

I have some questions:
how to program trunk in this scanner (i know talkgroups id) - which is base frequency, step, offset channel etc... ?

please, someone, if possible, help me... i am a novice in monitoring trunked systems...

 

[LarrySC]

First thing I notice is program is set up for conventional scanning useing PL tones. To my knowledge no trunking system uses PL tones. Mode is set for FM. If its a Motorola system it would need to be set to MOT. Using the "setup" and "trunk" buttons at the top would let you set data for trunking. I dont know if any of this helps but good luck. Larry

 

[fmon]

In the ARC250 program, in the third column under Trunk, click in the first Off, this will give you a pulldown which you should select to On. Do this in each of the Off's or you may Right click and highlight the rest of those fields under Trunk, then select Fill Down. This will set each to On.

I think you understand how to set the system under the Trunk pulldown at the top. He does need to figure what the base and offset is. And of course, is it a trunking system.

Have you run Trunker to gather data, or have you heard a Control Channel noise on any of the frequencies? If you have heard CC noise, then Motorola VHF trunking information may be found in RadioReference Home (click link above). On the left of that page you will find under >Online Content >Trunking Information>Determining Motorola VHF/UHF Channel Assignments. The info is lengthy but may help solve the unknown Base and Offset info you need.

 

[Vladlenas]

i need to understand base concepts how to programming

i need to understand base concepts how to programming my scanner with this frequencies.... not using this program... how to determine base frequency, channel etc...

 

[fmon]

Did you look at the link in RadioReference Home as suggested?

 

[Vladlenas]

yes, i am looked this link before posted my message in this forum...

 

[Vladlenas]

but trunker required an special interface for garther data...

 

[fmon]

Correct, but slicers are not difficult to build. How to build can be found on the link under Trunking at the RadioReference Home, or use this link.

http://www.radioreference.com/modules.php?name=Content&pa=showpage&pid=8
The two level should be more then adequate.

Or you may be able to purchase a slicer at a reasonable price. Try this link.
http://www.dataslicers.com/

This tool will be very resourceful in your efforts to map your system.

By the way, your use and structure of our language is astonishing, and makes me embarrassed , that I can't speak one word of yours.

Finally, I'm sorry we are unable to give you much help.

 

[loumaag]

Vladlenas:

In addition to the link fmon gave you for dataslicers.com you could take a look at this site which may be a little easier to deal with for EU countries.

 

[Vladlenas]

to all

thank you very much for possible help but i have one question: if i attach an a wave file with noise of control channel, can someone to help me decode data in file ?

 

[INDY72]

That is a good question,... Can a wav or mp3 of a control chan data be decoded/translated in a useful manner???

 

[fmon]

I'd like to hear a few seconds of the noise, put it up. And what freq are you getting it from.

 

[Vladlenas]

to fmon >

hi. here is file of noise of possible control channel. This noise has been captured from 160.150 Mhz.

 

[remedy44]

File is corrupt you may have to try it again
! C:\Documents and Settings\******\Desktop\noise.rar: Unexpected end of archive
! C:\Documents and Settings\******\Desktop\noise.rar: CRC failed in noise.mp3. The file is corrupt

 

[Vladlenas]

file

here is file, i hope, that no corrupted