NXDN Upgrade for BCD436HP and BCD536HP Now Available!

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garys

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Thanks. I'm still evaluating the differences between DSD+ and the scanner. As with DMR, it took a while for me to figure out the programming differences.

One thing I have seen is that audio processing is faster on the 436HP than on the computer running DSD+.

One other thing I noticed on the multi site system I am following. If the scanner can't find the control channel, the display won't show the site name.

Of course a scanner is a scanner and a computer running DSD+ with two dongles is NOT a scanner. Both have their advantages.

That's known as "late entry". I haven't had enough time to explore if my radio is joining conversations on late entry properly or not.
 

werinshades

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That's known as "late entry". I haven't had enough time to explore if my radio is joining conversations on late entry properly or not.

I'm monitoring a large NXDN system, and I see late entry conversations taking place. Scanner is stopping on active conversations. I have seen some occasional talk groups "flash" but no conversation and it's not holding. I'm assuming I just missed the end of a conversation? I'll keep watching..
 

UPMan

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The flash could also be encrypted (IIRC, encryption flag is in the voice packet on the voice channel, not indicated on the control channel).
 

philacop

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IDAS trunking

Question, Can and how if possible to follow a 7 channel IDAS trunking system which uses LTR type signaling (3 of the 7 channels key up every few seconds) I tried putting in on NXDN trunking but not working.
I have the correct channel numbers and frequencies. Site is 1.1-2
Any help is appreciated! Thanks
 

werinshades

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So here's a question for those that Beta tested or current users. Does it matter the order of the frequencies in the Site? As long as the Channel Number is correct does it matter if you find additional frequencies, program them in, assign them a proper Channel Number and scan the site? I have done this and "so far" haven't seen any issues. Anyone else do this?
 

mtindor

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So here's a question for those that Beta tested or current users. Does it matter the order of the frequencies in the Site? As long as the Channel Number is correct does it matter if you find additional frequencies, program them in, assign them a proper Channel Number and scan the site? I have done this and "so far" haven't seen any issues. Anyone else do this?

There are a lot of systems out there which have not been fully [and properly] documented. For those, one has to do exactly what you did (start with what you know) and then add more as they are discovered. I do exactly what you do.

The order that frequencies show up in a site configuration make no difference on DMR / NXDN as long as you have channel numbers / LCNs, RANs and Color Codes correct for the frequencies you do enter in.

Mike
 
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CPerk

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Is there anyone willing to explain, to me I bought the keys but it not seeming to decode the NXDN AND Can’t get hang of programming by hand
 

UPMan

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None of our DMA scanners care what order you program frequencies in. As long as you also program the correct LCN for the frequency (for those trunk types that require this info) it works.
 

werinshades

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I have. Lots of systems out there not fully [and properly] documented. For those, one has to do start with what's available and then do what you do.

The order that frequencies show up in a site configuration make no difference on DMR / NXDN as long as you have channel numbers / LCNs, RANs and Color Codes correct for the frequencies you do enter in.

Mike

Very good information to put out there. I previously said this and hope it's implemented in the programming software, but LCN should be replaced with Channel Number when you're programming a NXDN site. I believe others will be confused...as I was for 10 minutes...lol!
 

garys

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The system I am seeing it on, or at least the TG, doesn't have encryption. Part of this is also my getting used to the differences in programming between DMR and NXDN. I'm still sorting some of this out, as I am sure are others.

I don't recall having seen encryption at all on this particular network. There are some conventional encrypted channels in the area, so I might program one of those in to see what happens.

So far I'm very happy with the performance on my 436HP.


The flash could also be encrypted (IIRC, encryption flag is in the voice packet on the voice channel, not indicated on the control channel).
 

werinshades

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LCN = Logical Channel Number.

LCN's are different depending on systems. On MotoTRBO Trunking, you have to put in "numerical order" to Trunk whereas in NXDN, you must find the "Assigned Channel Number" given by the system administrator to trunk properly which is identical to Analog LTR. I'm sure I wasn't the only one, and won't be the last.
 

Ubbe

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One other thing I noticed on the multi site system I am following. If the scanner can't find the control channel, the display won't show the site name.

It scans for a carrier and if not found it goes to next site or system, it is normal analog scanning at 50-80ch/s and it doesn't display anything as it only stays a couple of hundreds of a second on the channel. If it finds a carrier and starts to decode the datastream it has enough time (the hold time) to display what channel frequency and the site it's on.

/Ubbe
 
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