DMR Public Release

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kodo

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I really am disappointed with my 436HP. I'm considering getting DMR to see if it improves performance at all. If I buy the DMR, then still decide later to return my radio, is the DMR charge refundable? I purchased my 436hp NIB from an eBay dealer.
 

rkm1215

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Not sure if this is correct sub. I have a 436HP with latest firmware and Sentinel versions as of Monday. When entering a DMR frequency (pub sfty) into a conventional system leaving all options default (Audio type all and no alpha characters in name) I get correct color code and slot, but TGID shows 0 which is incorrect. I can change the channel info to set it as Digital only, CC 7 etc, but since radio detects it as TGID 0 I can't set the TGs (2-3) correctly. Any thoughts? I will try to create a brand new system to see if it changes, but that really shouldn't be needed. On another (Ham/amateur) repeater TG is decoded properly.
 

kodo

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I just bought the DMR. !!! :eek: !!!!! :eek: !

Now what?!?!

I entered the key into the 436 and enabled it..Do I need to program the DMR channels in now? Will they automatically be detected on closecall?
 
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hiegtx

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Not sure if this is correct sub. I have a 436HP with latest firmware and Sentinel versions as of Monday. When entering a DMR frequency (pub sfty) into a conventional system leaving all options default (Audio type all and no alpha characters in name) I get correct color code and slot, but TGID shows 0 which is incorrect. I can change the channel info to set it as Digital only, CC 7 etc, but since radio detects it as TGID 0 I can't set the TGs (2-3) correctly. Any thoughts? I will try to create a brand new system to see if it changes, but that really shouldn't be needed. On another (Ham/amateur) repeater TG is decoded properly.
OK, looks like a little more detail is needed.

If entered as a conventional frequency, you are seeing the DMR channel pop-up with the color code.

But where are you entering it as digital only, and the CC? If in a conventional channel, you still should see the same thing when receiving a transmission.

If you are wanting to use talkgroup ID's, then it would actually need to be in a trunked system on the scanner. If you are only seeing DMR on the display (in conventional search mode) then the system is not a multi-channel trunked system. Try putting the frequency into a One Frequency Trunked system. If you want to see all TGID's that are in use, then be sure to set the system to ID Search, not ID Scan.
 

rkm1215

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I didn't set to digital or the Color Code. but if I were to do so it would be under edit current channel: set audio type: digital:color code. I can input as one frequency trunk (OFT), but my point was in the default conventional mode it is not detecting the Talk group on this system for some reason. It is NOT a trunked system, but I am familiar with DMR and the 436 in general including ID search so I'll make a new favorite list, new conventional system, and new OFT making sure it's set to id search and post results shortly. Thanks!
 

kodo

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Ok, so I'm kind of confused here. I'm running discovery mode on my 436. I'm getting a few freqs that come up with 'color codes'. Does that mean it's DMR, or could it also be a P25 system?
 

kodo

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Oh awesome! That DMR upgrade is picking up tons of stuff. Pleasantly surprised. :D
 

RK3AAG

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No fixes. Newest firmware with DMR simplex 'improvements' really doesn't do DMR simplex. Looks like it has never worked and no way to make it work. I can suppose that it's HW limitation, like SQL circuit or chipset. Your radio must listen only 1 slot and keep SQL open even all the time for 1 slot TMDA. No issues with 2-slot TDMA, because it fills carrier 100% of time. But 1-slot TDMA might cause SQL close, because keep silence for 50% of time. I discussed it with a few RF guys and we finally supposed it. I think that Uniden have information but don’t share it for business reasons.
 

jonwienke

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Your radio must listen only 1 slot and keep SQL open even all the time for 1 slot TMDA. No issues with 2-slot TDMA, because it fills carrier 100% of time. But 1-slot TDMA might cause SQL close, because keep silence for 50% of time.

No. Simplex is no different than a repeater with only 1 timeslot active.
 

jonwienke

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Only the 1 slot audio and the 3ms interstitial timing/sync between timeslots.
 

RK3AAG

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No. Simplex is no different than a repeater with only 1 timeslot active.
They are totally different. Just learn a bit and spend a time for experiments.

Repeater always fills 2 slots even when 1 slot is used. In direct channel, radio keep silence half of time (doesn't transmit on another slot what is free).

It's a reason why you can't 'close call' direct channel DMR transmission. But you can easily 'close call' DMR repeater.
 
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