SDS100/SDS200: LCN Finder Issue

[WILSON43]

Hello and Merry Christmas to all!

I recently ran the LCN FINDER function on my SDS 100 and SDS 200 for a DMR system.

There are supposed to be 12 channel numbers for this system, but after three days of searching,
the SDS200 found 9, which is apparently adequate for this system. If anyone knows why it
did not find all 12, let me know...

However, on the SDS100, all things being equal, same antenna, etc., searching for three days, it only found 4.

Why did the SDS200 find 9 and the SDS100 only 4?

Thanks in advance for the help!

Dan

 

[sadave]

Good morning!

In my experience with LCN Finder, there must be an active transmission on a frequency for the LCN to be detected. So, if the department does not have enough radio traffic to hit every frequency, you'll only get those that actually had traffic. I've also found that some of the frequencies listed on a trunked system are not yet set up in the system. If you're getting nine out of 12 you may have found all that are in use. Letting the LCN Finder run for long periods (especially during anticipated peak activity) is the best way I have found to get the most out of it. Also, I occasionally re-run it to confirm my data. From time to time I have found changes. Good luck and don't forget to send in your updates to RRDB.

Shep

 

[buddrousa]

But if you know the 9 then there is a LCN software that you can use to find the other 3. Several here have had luck using this software.

 

[Ubbe]

There are supposed to be 12 channel numbers for this system, but after three days of searching,
the SDS200 found 9, which is apparently adequate for this system.

Why did the SDS200 find 9 and the SDS100 only 4?

As buddrousa mentioned there's a LCN calculator in a thread here at RR that can be used.
You can take at look at the frequencies you got and their LCN's. There's probably a 12,5KHz jump in frequency for each LCN step.
If you know the other frequencies you can calculate their LCN and enter those in the site if they at some point get used.
The difference between SDS100 and SDS200 might be what antenna they use and their locations and what filter settings you are using.

/Ubbe

 

[WILSON43]

As buddrousa mentioned there's a LCN calculator in a thread here at RR that can be used.
You can take at look at the frequencies you got and their LCN's. There's probably a 12,5KHz jump in frequency for each LCN step.
If you know the other frequencies you can calculate their LCN and enter those in the site if they at some point get used.
The difference between SDS100 and SDS200 might be what antenna they use and their locations and what filter settings you are using.

/Ubbe

Thanks for the responses, but why would the SDS200 find 9 and the SDS100 find 4, all searching the same amount of time, same antenna, etc...?

 

[buddrousa]

Same antenna? Same run time? Same amount of radio traffic? Did you read and understand the answer in post 2?

 

[WILSON43]

Same antenna? Same run time? Same amount of radio traffic? Did you read and understand the answer in post 2?

Yes, and it doesn't specifically answer my question.

I've been a member of RR from the beginning and yet haven't been in these forums in a while. Now I remember
why. The snarky, know it all answers given by many on these forums.

 

[buddrousa]

Good luck we told you what works for us.

 

[GTR8000]

Is this about the American Dream system, again? You've created at least four threads about this system over the past few years.

American Dream Complex

This may be premature since it hasn't opened yet, but does anyone have any information as to the radio system, details, freqs, they will be using at this facility?

forums.radioreference.com

American Dream Update

I noticed in the Radio Reference database they now have frequency and system info posted for the American Dream complex. Under Bergen County other trunked systems. However, it is not showing up in Sentinel. Is there any reason for that? How could we get that info into Sentinel?

forums.radioreference.com

American Dream Mall - Any Updates?

Are there any updates available as to the radio communication system being used at the American Dream Mall and Complex? Dan

forums.radioreference.com

American Dream - What Am I Doing Wrong?

Hello, I am trying to monitor the American Dream complex from my home in North Jersey. I downloaded the system from the RR database. The video shows what is going on yet I am not receiving any comms at all. Not shown in the photo under the time it is blinking SLOT 2. What am I missing? Dan

forums.radioreference.com

 

[WILSON43]

Is this about the American Dream system, again? You've created at least four threads about this system over the past few years.

American Dream Complex

This may be premature since it hasn't opened yet, but does anyone have any information as to the radio system, details, freqs, they will be using at this facility?

forums.radioreference.com

American Dream Update

I noticed in the Radio Reference database they now have frequency and system info posted for the American Dream complex. Under Bergen County other trunked systems. However, it is not showing up in Sentinel. Is there any reason for that? How could we get that info into Sentinel?

forums.radioreference.com

American Dream Mall - Any Updates?

Are there any updates available as to the radio communication system being used at the American Dream Mall and Complex? Dan

forums.radioreference.com

American Dream - What Am I Doing Wrong?

Hello, I am trying to monitor the American Dream complex from my home in North Jersey. I downloaded the system from the RR database. The video shows what is going on yet I am not receiving any comms at all. Not shown in the photo under the time it is blinking SLOT 2. What am I missing? Dan

forums.radioreference.com

AND? Is there a limit to postings about a particular radio system? Or, are there certain criteria required to ask questions in this forum?

What was the point of posting all of the above?

Sad what has become of these forums.

 

[WILSON43]

Same antenna? Same run time? Same amount of radio traffic? Did you read and understand the answer in post 2?

You people are amazing. Yes, I get it. You explained how to obtain the LCN, etc. I was simply asking for some input and general
opinions from some of the geniuses here as to what they thought would cause two radios to perform diffferently in the LCN analysis.
No big deal. I realize the amount of radio knowledge herein is overwhelming and at a premium for you radio savants to engage in
a simple back and forth. I guess your time is better spent in the other forum justifying why it is prudent to dump a grand on a scanner.

Thanks for all your input.

 

[wa8pyr]

AND? Is there a limit to postings about a particular radio system? Or, are there certain criteria required to ask questions in this forum?

What was the point of posting all of the above?

Sad what has become of these forums.

There's no limit to the number of posts, but it's generally considered poor form to create multiple threads about a single topic.

 

[WILSON43]

There's no limit to the number of posts, but it's generally considered poor form to create multiple threads about a single topic.

Those postings were in a completely different forum, the NJ State Forum, from quite a while ago, endeavoring to work with other RR members to figure out the new radio system of this huge new mall in NJ. We did so collectively which is what I thought RR was all about.
At least it was in the beginning. Why someone would take the time to actually do research on me and my past postings is beyond me.
Actually, if you care to research further, I VERY rarely post anywhere on RR any more. I keep the membership for the database. If it wasn't for that resource, I'd have dumped RR a long time ago.

Many other members have contacted me privately advising they are disgusted with the attitudes as well and will no longer post info to the database, and that's a shame.

Food for thought for the moderators.

My post herein was more of a technical nature. That's why I posted here. I guess that was a mistake.

 

[buddrousa]

Your question was answered as to what would cause 2 different scanners to find different number of frequencies. If you do not understand the answer that is not our problem. You were the 1st with an attitude if I was you I would not hold my breath waiting for help now.

 

[W8KIC]

Those postings were in a completely different forum, the NJ State Forum, from quite a while ago, endeavoring to work with other RR members to figure out the new radio system of this huge new mall in NJ. We did so collectively which is what I thought RR was all about.
At least it was in the beginning. Why someone would take the time to actually do research on me and my past postings is beyond me.
Actually, if you care to research further, I VERY rarely post anywhere on RR any more. I keep the membership for the database. If it wasn't for that resource, I'd have dumped RR a long time ago.

Many other members have contacted me privately advising they are disgusted with the attitudes as well and will no longer post info to the database, and that's a shame.

Food for thought for the moderators.

My post herein was more of a technical nature. That's why I posted here. I guess that was a mistake.

sadave essentially gave you the answer to your question in the second post so that begs the question: are you not able to comprehend what he actually told you? You just flew off the handle and jumped all over everyone on this thread and you come across as a total reactionary and that's a lousy way to get the attention of ANYONE attempting to help you! In fact, you've completely disregarded what he actually said and launched into some bizarre invective that simply turns people off right out of the gate. Get a grip on reality and stop exploding all over members who're genuinely trying to help you with the issue you've posted. Take a chill pill or whatever you have to ingest that'll allow you to calm down and deal with the human race on its terms rather than yours alone. You aren't the only person in existence and its a shame that you actually had to be reminded of that!

 

[wa8pyr]

Those postings were in a completely different forum, the NJ State Forum, from quite a while ago, endeavoring to work with other RR members to figure out the new radio system of this huge new mall in NJ. We did so collectively which is what I thought RR was all about.
At least it was in the beginning. Why someone would take the time to actually do research on me and my past postings is beyond me.
Actually, if you care to research further, I VERY rarely post anywhere on RR any more. I keep the membership for the database. If it wasn't for that resource, I'd have dumped RR a long time ago.

Many other members have contacted me privately advising they are disgusted with the attitudes as well and will no longer post info to the database, and that's a shame.

Food for thought for the moderators.

My post herein was more of a technical nature. That's why I posted here. I guess that was a mistake.

Well, I'm sorry you feel that way. I've never fooled around too much with LCN Finder too much before I got an SDS150, so this thread was interesting and had promise until you wigged out.

Like any community there are any number of personalities here, and some are going to be a bit more direct or even abrasive; if you can't shrug them off and move on, I'm sorry for you; your life will be a daily challenge.

I hope you had a Merry Christmas, and your New Year is better than the last.