DMR Capacity+: Why...?

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Ghstwolf62

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Other than the failing clock on my 536 (fails before and after being sent to Uniden for repair) and the faulty DMR operations these radios are to my liking. I like the programming functionality compared to the radios I sold to make room for the 436 and 536. And the GPS function of the BCD996XT is one reason I decided to upgrade to the 536. The other was the DMR capability. If I knew what I know now I would not have made the purchase for either radio (436 and 536) and the subsequent DMR upgrades. I hope to see a fix for the DMR issues soon.

Frankly as much as I love the 536 I'd probably go with the TRX for DMR if I had anything besides conventional around and even then the Whistler does better in providing all the info on that.

I just can't understand why Uniden can't display all relevant info on the DMR. TG, CC and TS being displayed should not be an issue with such a big screen. Have to jump through hoops to get it to do it and you then can't do an alpha tag.

I guess I've been lucky in that I've had none of the problems so many complain about with either the 436 or 536. My scanners do what they're supposed to do as long as I do. Any problems are traceable to me doing something wrong.

Anyway wish you luck. I will say I'd have kept the GRE. Mine may be old but it works better and faster than any of the current scanners I have. (For what it does)
 

rbuxton

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Rest channel activity

Someone answer this for me please. I have 5 freqs from one site in DSD+/FMP24. The rest channel starts at 461.800, slot 1. When a voice calll starts the rest channel moves to 461.800, slot 2 and the voice call takes place on slot 1. The next voice call occurs on 461.800, slot 2, and the rest channel moves to 463.4125, slot 1. Next voice call 463.4125, slot 1, rest channel to slot 2. Next voice call on 463.4125, slot 2, and the rest channel moves to 461.800, slot 1. Etcetera etcetera,

So, is this movement of the rest channel between two frequencies indicate that these are the only two freqs used at this site?

I thought that the rest channel would move along all of the freqs of a site as calls are made.
 

jonwienke

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I thought that the rest channel would move along all of the freqs of a site as calls are made.

That is correct. There may be additional frequencies licensed for the system, but if the rest channel doesn't use them, they are probably not being used at all. But they could be added to the rotation any time.
 

rbuxton

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That is correct. There may be additional frequencies licensed for the system, but if the rest channel doesn't use them, they are probably not being used at all. But they could be added to the rotation any time.

Ok then. So as far as programming this Cap+ site I to my x36HP would I program it as a MotoTRBO and the 2 freqs as LCN 1 & 2 and leave the other 3 freqs out? Or would I program all 5 freqs in and mark the last 3 freqs as LCN 0?

I'll be surprised if the radio will receive this system programmed as a MotoTRBO trunked system.
 

UPMan

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If the frequencies are not part of the system (as they appear to not be), then you would not program them as part of the system.

The two active identified frequencies should be programmed into a MotoTRBO system with the LCN's set to the value you determined to be correct.
 

rbuxton

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If the frequencies are not part of the system (as they appear to not be), then you would not program them as part of the system.

The two active identified frequencies should be programmed into a MotoTRBO system with the LCN's set to the value you determined to be correct.

Thanks. I'll report back my findings.

Does it make a difference on the threshold settings?
 

EricCottrell

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Someone answer this for me please. I have 5 freqs from one site in DSD+/FMP24. The rest channel starts at 461.800, slot 1. When a voice calll starts the rest channel moves to 461.800, slot 2 and the voice call takes place on slot 1. The next voice call occurs on 461.800, slot 2, and the rest channel moves to 463.4125, slot 1. Next voice call 463.4125, slot 1, rest channel to slot 2. Next voice call on 463.4125, slot 2, and the rest channel moves to 461.800, slot 1. Etcetera etcetera,

So, is this movement of the rest channel between two frequencies indicate that these are the only two freqs used at this site?

I thought that the rest channel would move along all of the freqs of a site as calls are made.
Hello,

I find it interesting because Capacity Plus systems around here will stay on the same frequency if only one talkgroup is active at a time. You would see the rest channel move back and forth between slot one and slot two. The frequency only changes when two talkgroups are active at the same time.

It would be interesting to see what happens when four talkgroups become active. If the system busy is sent then only two repeaters are used. If the rest channel goes to five, then there is some kind of priority scheme for repeater use.

Capacity Plus systems can have up to three data channels. Usually there is data polling being done on the data frequencies. Again there could be several different modes.

73 Eric
 

dtscho

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Someone answer this for me please. I have 5 freqs from one site in DSD+/FMP24. The rest channel starts at 461.800, slot 1. When a voice calll starts the rest channel moves to 461.800, slot 2 and the voice call takes place on slot 1. The next voice call occurs on 461.800, slot 2, and the rest channel moves to 463.4125, slot 1. Next voice call 463.4125, slot 1, rest channel to slot 2. Next voice call on 463.4125, slot 2, and the rest channel moves to 461.800, slot 1. Etcetera etcetera,

So, is this movement of the rest channel between two frequencies indicate that these are the only two freqs used at this site?

I thought that the rest channel would move along all of the freqs of a site as calls are made.

The system you're talking about is site 2 of this system, correct?

https://www.radioreference.com/apps/db/?sid=7035

Only two Cap+ voice channels (461.8000 and 463.4125, as you've noted) have ever been identified for this system, but I'm pretty sure 463.7375 is used as a data channel. That frequency should not need to be entered into the scanner for it to track properly.

All the sites for this system have one separate Cap+ data channel. And like you, I've had difficulty getting the 436 to track this Cap+ Multi Site system properly. I can monitor all four sites from Fredericksburg.

Dave
 

rbuxton

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The system you're talking about is site 2 of this system, correct?

https://www.radioreference.com/apps/db/?sid=7035

Only two Cap+ voice channels (461.8000 and 463.4125, as you've noted) have ever been identified for this system, but I'm pretty sure 463.7375 is used as a data channel. That frequency should not need to be entered into the scanner for it to track properly.

All the sites for this system have one separate Cap+ data channel. And like you, I've had difficulty getting the 436 to track this Cap+ Multi Site system properly. I can monitor all four sites from Fredericksburg.

Dave

Should 463.7375 a data channel have a constant transmission such as P25 control channel?

I wonder what makes this system so difficult to monitor. Does multi-site have anything to do with it? That wouldn't make sense to me. I thought I could monitor each site separately understanding that I might miss a conversation that was on a different site.

Have you looked up the FCC license for this system. I see Fork Mtn. and Carter Mtn. along with Independent Hill and others on the license but not in the RR database.

It's not that I find anything particularly interesting to hear on this system. I'm just intrigued on how it's put together.
 

rbuxton

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Thanks. I'll report back my findings.

Does it make a difference on the threshold settings?

My findings are:

Programmed as MotoTRBO 2 freqs as LCN1 and LCN2. Digital settings Manual/8.

Programmed same two freqs as conventional.

Heard voice on conventional, nothing on the MotoTRBO system.

Swell. :mad:
 
D

DaveNF2G

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Are you running in ID Search mode?

If you have no saved talkgroups and run ID Scan, then you will hear nothing.
 

rbuxton

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Are you running in ID Search mode?

If you have no saved talkgroups and run ID Scan, then you will hear nothing.

I have saved talkgroups and have set ID search on. And just to test things out I also set ID search to off with the saved talkgroups. It does not work. :mad:
 

dtscho

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Should 463.7375 a data channel have a constant transmission such as P25 control channel?

I wonder what makes this system so difficult to monitor. Does multi-site have anything to do with it? That wouldn't make sense to me. I thought I could monitor each site separately understanding that I might miss a conversation that was on a different site.

Have you looked up the FCC license for this system. I see Fork Mtn. and Carter Mtn. along with Independent Hill and others on the license but not in the RR database.

It's not that I find anything particularly interesting to hear on this system. I'm just intrigued on how it's put together.

Yes, the data channels can sometimes have almost a constant transmission. The one near me (452.7375 in Fredericksburg) is like this.

It may be difficult to monitor because it's multi-site, but maybe it's just something about the way Communication Specialists set up the system that's giving the scanner problems.

Fork Mountain is on the license, and the site is active, but it's separate from the four-site system that's in the database. Carter Mountain is also an active site, but I'm too far away to determine whether it's part of the four-site system, or if it's separate.

And I've confirmed the LCN of this system using DSD+ as well; what's in the database is correct.

Dave
 

UPMan

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So, DSD+ reported 1/2 on one frequency and 3/4 on the other? (That would equate to LCN 1 on the 1st freq. and LCN 2 on the 2nd freq.)

Just making sure, since DSD+ actually reports differently than what the scanner uses.
 

Ubbe

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You can use Ian Wraiths dmrdecode java program to get additional information.
It tells what site you are listening to in a cap+ system and what other sites there is in that system. It decodes all controldata.

/Ubbe
 

rbuxton

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So, DSD+ reported 1/2 on one frequency and 3/4 on the other? (That would equate to LCN 1 on the 1st freq. and LCN 2 on the 2nd freq.)

Just making sure, since DSD+ actually reports differently than what the scanner uses.

Yes, DSD+ reports 461.800 Ch. 1 & 2, 463.4125 Ch. 3 & 4. So I program the two freqs into the 436HP as 461.800 LCN1, 463.4125 LCN2.
 

rbuxton

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Yes, the data channels can sometimes have almost a constant transmission. The one near me (452.7375 in Fredericksburg) is like this.

It may be difficult to monitor because it's multi-site, but maybe it's just something about the way Communication Specialists set up the system that's giving the scanner problems.

Fork Mountain is on the license, and the site is active, but it's separate from the four-site system that's in the database. Carter Mountain is also an active site, but I'm too far away to determine whether it's part of the four-site system, or if it's separate.

And I've confirmed the LCN of this system using DSD+ as well; what's in the database is correct.

Dave

Roger all of the above. Why does the Fredericksburg site not have a LCN3? Is that proper or is the freq just unknown?

001 (1)
FredericksburgSpotsylvania 01 451.9375 02 452.2375 04 452.100
 
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