SDS100/SDS200: Analyze on DMR system manually created

Computrguy

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Looking for help on the Analyze function on the SDS10

I have a thread in the Marine forum here
I am trying to determine if the post indicating it is a CAP+ system is what the system is.
I am trying to setup Analyze on my SDS100 and a bit confused.
I created a system manually to scan all the known DMR frequencies that cruise lines typically use.
It is set up as a DMR One Frequency. Analyze cannot be run against this.

So I created it as a MotoTRBO system. I can run Analyze on this but it seems it is not finding anything.
I also read that if it is MotoTRBO LCN finder will not work to do what I am want to.

Looking for suggestions how to determine if this is a CAP+ TRS type system.
TIA
 

jasonhouk

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Looking for help on the Analyze function on the SDS10

I have a thread in the Marine forum here
I am trying to determine if the post indicating it is a CAP+ system is what the system is.
I am trying to setup Analyze on my SDS100 and a bit confused.
I created a system manually to scan all the known DMR frequencies that cruise lines typically use.
It is set up as a DMR One Frequency. Analyze cannot be run against this.

So I created it as a MotoTRBO system. I can run Analyze on this but it seems it is not finding anything.
I also read that if it is MotoTRBO LCN finder will not work to do what I am want to.

Looking for suggestions how to determine if this is a CAP+ TRS type system.
TIA
Suggestions to Confirm if It's CAP+ and Set Up Analyze
  1. First, Verify System Type Conventionally (No Programming Needed Yet):
    • Set your SDS100 to a custom search in the frequency range cruise lines typically use (e.g., 450-470 MHz or whatever specifics you have).
    • Menu > Search > Custom Search > Edit your range and step size (e.g., 12.5 kHz for DMR).
    • Start scanning. When you hit activity:
      • Hold on the frequency.
      • Look at the display: If it's CAP+, it should show "CAP" or "Cap Plus" along with a talkgroup ID (TGID), slot (1 or 2), and color code (0-15).
      • Note any frequency hopping— if voice moves to another freq in your list, it's likely trunked (CAP+).
    • If it just shows "DMR" without "CAP" or hopping, it might be conventional/one-freq DMR instead.
  2. Program the System as MotoTRBO Trunk:
    • Use Sentinel software (easier) or the scanner menu.
    • Create a new Favorites List > New System > MotoTRBO Trunk.
    • Add a Site > Enter all known frequencies.
    • Assign placeholder LCNs: Start with 1 for the first freq, 2 for the second, etc. (This is temporary; LCN Finder will correct them.)
    • Set Color Code to "Search" if unknown (or enter it if you noted one from Step 1).
    • Set ID Search to "On" (under System options) to catch any TGIDs.
    • Avoid/Quick Keys: Assign as needed, but enable the system/site for scanning.
  3. Run Analyze to Find LCNs and Confirm Activity:
    • Ensure the system is in an active Favorites List and the scanner is in range/noise-free.
    • Menu > Analyze > LCN Finder > Select your MotoTRBO system.
    • Start it and wait for activity (could take minutes to hours depending on traffic). The scanner will scan the freqs and populate correct LCNs when it detects grants/updates.
    • Once it finds LCNs, confirm them (press E/Yes). Sentinel will update if connected.
    • If no findings: Double-check for activity (use Step 1), ensure the color code isn't mismatched, or try during peak usage times on the cruise.
  4. Run System Status Analyze for More Details:
    • After LCNs are set, Menu > Analyze > System Status > Select your system.
    • This shows a graph of signal quality, activity, and system info. If it's CAP+, you'll see consistent trunking behavior (e.g., rest channel, voice grants).
  5. Troubleshooting Tips:
    • No Activity: Cruise systems might be low-traffic or encrypted (SDS100 can't decode encryption). Confirm freqs are active first via custom search.
    • Color Code Issue: If set wrong, nothing will decode. Use "Search" mode initially.
    • Firmware/Upgrades: Ensure your SDS100 has the latest firmware via Sentinel and the paid DMR upgrade key installed.
    • Alternative Tool: If the scanner isn't cutting it, consider free software like DSD+ with an RTL-SDR dongle on a PC to decode raw DMR and confirm CAP+ (it shows beacons/rest channels clearly).
    • If it's not CAP+ but conventional DMR, stick with DMR One Frequency and use Analyze > RF Power Plot or other non-trunked tools.
This should help you nail down if it's CAP+. If you share more details (e.g., specific freqs, color codes seen, or error messages), I can refine this.
 

Computrguy

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Thanks.
In the Marine thread I noted above there is more actual data so it is an active system.

In 1 it shows DMR and stays on one frequency.
In 2 it is not finding anything (or so it seems for the time I run it). But I have it programmed with LCN of 0 (that's the default.) Should it not be -0-?
In 3 it finds no LCNs.

I have a RTL-SDR but only SDR# installed. Also, interesting that Simple DMR in SDR# will not decode. I am getting a strange noise (not the type 0s and 1's one would get on a digital channel). Simple DMR has worked on other systems.
Maybe I'll install DSD and see if I get different results.
 

jasonhouk

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Thanks.
In the Marine thread I noted above there is more actual data so it is an active system.

In 1 it shows DMR and stays on one frequency.
In 2 it is not finding anything (or so it seems for the time I run it). But I have it programmed with LCN of 0 (that's the default.) Should it not be -0-?
In 3 it finds no LCNs.

I have a RTL-SDR but only SDR# installed. Also, interesting that Simple DMR in SDR# will not decode. I am getting a strange noise (not the type 0s and 1's one would get on a digital channel). Simple DMR has worked on other systems.
Maybe I'll install DSD and see if I get different results.
  • If it just shows "DMR" without "CAP" or hopping, it might be conventional/one-freq DMR instead.
 
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