THP Help: What am I doing Wrong?

[n4anz]

Hi all,

Can anyone tell me what I am doing wrong? I have the Uniden SDS 200 and the Uniden BCD 536HP. Both have the same programming and are on the same antenna. My problem is that the 200 does not pick up THP but it does pick up everything else I have programmed into it. My 536 picks up everything including THP. Is there something I am not doing right in the 200? What could be causing this?

Thanks in advance for any help!

 

[RJDII]

Hi all,

Can anyone tell me what I am doing wrong? I have the Uniden SDS 200 and the Uniden BCD 536HP. Both have the same programming and are on the same antenna. My problem is that the 200 does not pick up THP but it does pick up everything else I have programmed into it. My 536 picks up everything including THP. Is there something I am not doing right in the 200? What could be causing this?

Thanks in advance for any help!

I am having the same with TDOT. I am just getting Nashville THP on the 200 but others n HP2.

 

[ccfire]

I am having the same with TDOT. I am just getting Nashville THP on the 200 but others n HP2.

Are you using the same antenna for both

 

[jtwalker]

Are both using the same profile? If they are sharing same antenna and same favorites lists, then I would look at possible profile differences.

 

[n4anz]

Are both using the same profile? If they are sharing same antenna and same favorites lists, then I would look at possible profile differences.

I'm not sure what you mean by profile.

 

[jtwalker]

I'm not sure what you mean by profile.

All the settings other than a favorites list are stored in a profile, including model specific settings. You should have a SDS200 profile and a BCD536HP profile with their own settings. Favorites are shared across all profiles.

Easy to Read manual for Sentinel

 

[tvengr]

My problem is that the 200 does not pick up THP but it does pick up everything else I have programmed into it.

Does your SDS200 receive any other talkgroups on TACN?

 

[n4anz]

All the settings other than a favorites list are stored in a profile, including model specific settings. You should have a SDS200 profile and a BCD536HP profile with their own settings. Favorites are shared across all profiles.

Easy to Read manual for Sentinel

Okay, yes, I see what you're talking about now. Yes, they do have separate profiles.

 

[jtwalker]

Okay, yes, I see what you're talking about now. Yes, they do have separate profiles.

I would look here for differences that weren’t intended to be different.

 

[tvengr]

There are a couple of things in the profile for the SDS200 to check. First, go to the Tools tab in Sentinel and set Target Model to SDS200. You will have access to the settings for the appropriate scanner. The profile has a setting for squelch. It should usually be set at 2. The SDS scanners have the ability to use Site NAC which the x36 scanners do not. If you set the scanner to Ignore Site NAC, that would eliminate the possibility of an incorrect Site NAC setting.

 

[n4anz]

There are a couple of things in the profile for the SDS200 to check. First, go to the Tools tab in Sentinel and set Target Model to SDS200. You will have access to the settings for the appropriate scanner. The profile has a setting for squelch. It should usually be set at 2. The SDS scanners have the ability to use Site NAC which the x36 scanners do not. If you set the scanner to Ignore Site NAC, that would eliminate the possibility of an incorrect Site NAC setting.

Should I set it to ignore The NAC?

 

[tvengr]

Should I set it to ignore The NAC?

Give it a try and see if it fixes the problem. If it does, the Site NAC is incorrect.

 

[ka4bni]

I am having the same with TDOT. I am just getting Nashville THP on the 200 but others n HP2.

Nashville THP Dispatch is currently Phase I FDMA and all of the TDOT help channels are Phase II TDMA if that makes a difference with your scanner configs.

 

[ka4bni]

Memphis, Jackson, Lawrenceburg, Cookeville, Knoxville, and Fall Branch THP main dispatch talk groups are Phase II TDMA. Nashville and Chattanooga THP main dispatch talk groups are still Phase I FDMA.

 

[tvengr]

Nashville THP Dispatch is currently Phase I FDMA and all of the TDOT help channels are Phase II TDMA if that makes a difference with your scanner configs.

Memphis, Jackson, Lawrenceburg, Cookeville, Knoxville, and Fall Branch THP main dispatch talk groups are Phase II TDMA. Nashville and Chattanooga THP main dispatch talk groups are still Phase I FDMA.

The OP is using a SDS200 which is both P25 Phase 2 and simulcast capable. There is no difference in programming Phase 1 and Phase 2. The OP's BCD536HP, which does not use Site NAC, works fine on the system using the same programming.

 

[tvengr]

My problem is that the 200 does not pick up THP

Please attach your SDS200 favorites list file with THP so that I can take a look at it to check for errors. Go to the File tab in Sentinel and click on Export to hpe file (Favorties List). You will need to zip the exported file to be able to attach it. Click on Attach files and open the zipped file.

 

[RJDII]

Nashville THP Dispatch is currently Phase I FDMA and all of the TDOT help channels are Phase II TDMA if that makes a difference with your scanner configs.

What is different between FDMA and TDMA? Sentinel for HP2 has TDMA. For TDOT.

 

[jtwalker]

What is different between FDMA and TDMA? Sentinel for HP2 has TDMA. For TDOT.

TDMA is phase 2, and FDMA is phase 1. TDMA is the newer technology and allows for more radio traffic (double) using the same amount of RF spectrum.

 

[RJDII]

TDMA is phase 2, and FDMA is phase 1. TDMA is the newer technology and allows for more radio traffic (double) using the same amount of RF spectrum.

On sentinel for bcd36 it shows TACN as P25 trunk. On HP sentinel it shows TACN as P25 X2-TDMA. Would that make a difference?

 

[tvengr]

On sentinel for bcd36 it shows TACN as P25 trunk. On HP sentinel it shows TACN as P25 X2-TDMA. Would that make a difference?

On HomePatrol Sentinel, the system type should be P25 Standard. P25 X2-TDMA was Motorola's implementation of TDMA before the P25 Phase 2 standard was finalized.