Frequencies vs Talk groups

[Corrlt1]

I am new to trunking. I know I must choose a bank and then choose a channel in that bank and enterer the frequencies. My question is where do I enter the talk groups - in the same bank and channels or a different bank and channels. I am using a BC 796D

 

[INDY72]

OK this is an example on a PRO-2052:
You want to listen to your local PD using a type II Motorla 800 TRS.
Firstly you place all the freqs into the bank you have selected for trunking.
Then you press search, and the scanner looks for the control chan.
Once your scanner finds the CC, you can then program in Talkgroup ID's for your agency. The TG's go into a special set of mem banks that are opened inside the trunked bank.

 

[mciupa]

Just to expand on what milf has said, while your scanner is in SEARCH
mode,push MANUAL ,that should stop the scanner and you can
enter all the talkgroups you wish into a Scan List Then you can
scan through on ID scan listening to your personal favorites.

(Only one type of trunk system per bank)

 

[Dubbin]

I am new to trunking. I know I must choose a bank and then choose a channel in that bank and enterer the frequencies. My question is where do I enter the talk groups - in the same bank and channels or a different bank and channels. I am using a BC 796D

Start on pg 53 of the manual under Programming Talkgroups. You will be adding the talkgroups in the same bank that you entered the trunking frequencies.

 

[k8tmk]

Actually, I have only entered the control channel frequency into banks on my 796D. You do not need to bother with entering all of the frequencies involved with a particular tower.

For example, I can receive three towers well in Berrien County Michigan. So, I programmed the Coloma tower control frequency in Bank 1, the Sawyer tower control frequency in Bank 2, and the Sumnerville tower control cannel in Bank 3. Let the control channel data tell the scanner which working channel to go to.

As far as talkgroup data goes, you have 100 storage locations for talkgroup IDs and talkgroup names available in each bank. Yes, if the same talkgroups use more than one tower (and I found they often do, depending upon whether they are in the county), you need to enter the talkgroup information into each associated talkgroup.

Hope this helps.

 

[EmpireSound]

OK this is an example on a PRO-2052:
You want to listen to your local PD using a type II Motorla 800 TRS.
Firstly you place all the freqs into the bank you have selected for trunking.
Then you press search, and the scanner looks for the control chan.
Once your scanner finds the CC, you can then program in Talkgroup ID's for your agency. The TG's go into a special set of mem banks that are opened inside the trunked bank.

I'm new to trunking as well. Does it matter in which order or manner you enter the frequencies in the bank you wish to trunk?

 

[loumaag]

I'm new to trunking as well. Does it matter in which order or manner you enter the frequencies in the bank you wish to trunk?

It does not matter for Motorola. Newer scanners allow for CC (control channel) only modes where all you have to enter is the possible control channels of a site for Motorola, older scanners require that you put in all of the frequencies.

Some other types of popular trunking systems (e.g. EDACS and LTR) require that frequencies be entered in a logical channel number (LCN) position. That is, if the frequence is designated as LCN-1 then it must go in slot 1 of the whatever bank you are using. For these types of systems, slot 0 is never used and the slots may or may not be in any logical order.

For example a popular LTR 5 channel choice is slots 1, 5, 9, 13, 17. The reasoning behind this isn't important for a new person to trunking, just that you must put them in the order they are supposed to be.

Look around for these LCN numbers, start here on this site and welcome to trunking.

 

[waynesewell]

That is, if the frequence is designated as LCN-1 then it must go in slot 1 of the whatever bank you are using. For these types of systems, slot 0 is never used and the slots may or may not be in any logical order.

I have seen this mentioned before. On my bc296d, the slots are numbered starting with 01 in each bank, not 00. Does this mean I have to add 1 to each number? In other words, place lcn 1 into slot 2, 2 into 3, etc?

Maybe this is why I have been unable to monitor any edacs system.

 

[loumaag]

That is, if the frequence is designated as LCN-1 then it must go in slot 1 of the whatever bank you are using. For these types of systems, slot 0 is never used and the slots may or may not be in any logical order.

I have seen this mentioned before. On my bc296d, the slots are numbered starting with 01 in each bank, not 00. Does this mean I have to add 1 to each number? In other words, place lcn 1 into slot 2, 2 into 3, etc?

Maybe this is why I have been unable to monitor any edacs system.

No, you don't "add one", I am not sure what your difficulty may be, but that is not it. See the note on page 58 of the owners manual in regard to LTR systems. They should have put a similar note in the EDACS section, but didn't. <sigh> (Neither Uniden nor GRE are known for putting out very good manuals.)

 

[PanJurekMrJerry]

I'm new to trunking as well. Does it matter in which order or manner you enter the frequencies in the bank you wish to trunk?

It does not matter for Motorola. Newer scanners allow for CC (control channel) only modes where all you have to enter is the possible control channels of a site for Motorola, older scanners require that you put in all of the frequencies.

Some other types of popular trunking systems (e.g. EDACS and LTR) require that frequencies be entered in a logical channel number (LCN) position. That is, if the frequence is designated as LCN-1 then it must go in slot 1 of the whatever bank you are using. For these types of systems, slot 0 is never used and the slots may or may not be in any logical order.

For example a popular LTR 5 channel choice is slots 1, 5, 9, 13, 17. The reasoning behind this isn't important for a new person to trunking, just that you must put them in the order they are supposed to be.

Look around for these LCN numbers, start here on this site and welcome to trunking.

Is there a reason to this?: "For example a popular LTR 5 channel choice is slots 1, 5, 9, 13, 17"?

Thanks.

 

[loumaag]

Is there a reason to this?: "For example a popular LTR 5 channel choice is slots 1, 5, 9, 13, 17"?

Yes, it deals with a timing issue. Since LTR can only have 20 channels, if you have a five channel system it is more efficent if you space them by 4's. Remember that LTR does not have a control channel but works on a "home channel" method. See the various posts in the LTR forum for more information.

 

[PanJurekMrJerry]

Okay, so why do the L.T.R. systems seems to follow whatever pattern they choose in the Cleveland Ohio Metro Area?
Why are some listed as L.T.R. but seem to trasmit in conventional mode?
I know of one site that lists three frequencies but uses only one
frequency or L.T.R. Channel 1 or 0-01-XXX. 8)

 

[INDY72]

LTR regular systems can almost be confused for a conventional system, unless you only listen to it, then youll hear the repeater "burst" as its called about every ten to twelve seconds. It will resemble an mic being keyed for a second with no voice. Now an LTR Passport system there is no mistaking for normal conventional as the repeater "bursts" are in between every two to three seconds. I am not too sure about how the LTR MultiNet sounds as I have not monitored any of those yet. *Note*--- LTR Regular can be trunktracked on most of the newer Bearcats, and only a couple of the older Radio Shack Scanners. LTR Passport can not be trunktracked by any current production scanner, but can be monitored conventionally. LTR MultiNet is also a format that can not as of yet be trunktracked. And as of yet, I have not heard of a digital format for LTR, though most likely there is one in the works. (Probably a MultiNet-D, or Passport-D, hopefully APCO P-25 compatable) Oh and as to the system having multiple freqs but only one or two TG's... think about it.. all trunked systems except for EDACS SCAT use multiple frequencys in a specially designed effeciant manor. If you monitor the LTR TRS, with a LTR capable trunking scanner, you might just find more than one TG in use. Then you can tell us, and we can update the db.

 

[PanJurekMrJerry]

:arrow: Well I do NOT know about Passport or ESAS(?) L.T.R. but I think I have seen it mention thta MultiNet uses L.T.R. formatted Talk Groups but it has an audible Control Frequency.[/b]
:wink:

 

[loumaag]

:arrow: Well I do NOT know about Passport or ESAS(?) L.T.R. but I think I have seen it mention thta MultiNet uses L.T.R. formatted Talk Groups but it has an audible Control Frequency.
:wink:

You are correct, MultiNet does have a control channel. However it can be monitored in conventional mode but you will not get any TG information decoded (at least I didn't on a Pro-92 type scanner.)

Okay, so why do the L.T.R. systems seems to follow whatever pattern they choose in the Cleveland Ohio Metro Area?

I don't know. It is up to the LTR system owner/designer/radio tech as to how the channels are laid out. Once again, I would suggest that you go to the LTR forum on this site and scan the posts for the last year or so as great progress has been made using Trunker type programs to start to decode LTR systems; there is lots of information there that will answer most (if not all) of your questions.