Uniden DMR

[buddrousa]

@JoeBearcat
A little history. When I left the Department over a year ago I programmed all Radios for DMR with 1 TG on Slot 1 and a different TG on Slot 2 1 Frequency Kenwood Repeater. We did testing at that time all my Scanners received all radio traffic and recorded. The Department decided to move to DMR this week a Kenwood Dealer came in put every radio on a Service Monitor. As of now My NX5200, BCD160, BCD260 TRX-1 and TRX-2 receive all traffic what I noticed the most is the AUDIO on my NX5200 is so loud I have to turn the volume down 3 bars so it is not blaring. My 325p2, 996p2, 436's 536's SDS100's and SDS200 receive radio traffic for about 4 seconds then drops I still see the signal bars just fine -65Db as I am 2.5 miles from the site. I have made several changes to the Unidens with no noticeable improvement.
Just a little more info the other DMR Departments work just fine and do not drop audio.
All Firmware is up to date.

 

[Ubbe]

Prepare a debug log file that covers the start of reception and to when it finally drops the call, as that are what Uniden will need to have to be able to check on this.

/Ubbe

 

[crippledchicken]

I have the loudness problem also, on my electric co. which is DMR. It's always been like that though. I go into ProScan and set volume offset to -3 and that helps some on my BCD536.

 

[buddrousa]

Will I need to do 536 and sds200 both?

 

[Ubbe]

Will I need to do 536 and sds200 both?

They only need one log. It is the trunk track scanners that fail and the conventional channel scanners still work, including Whistler that doesn't use the control channel. So it is something extra in the control channel data that confuses Unidens trunk track scanners.

Can you take a look at the display of a SDS100/200, if you have their display set to show the frequency, if it changes to another frequency when a call starts? You can look in the log file and if it says PLL at the start of a line it is trying to move to another frequency.
Also note the CRC error text if that starts to pop up when the scanner loose reception. There's a bug, I think it was in NXDN, where decoding deteriorate after a while when stationary on a frequency until it can't decode the data anymore but a quick flip of channel back and forth clears that and it starts to decode again.

/Ubbe

 

[KevinC]

We've all seen how Uniden has jumped on the issues on "the list", so good luck!

 

[buddrousa]

@Ubbe
It is a single repeater 154.430 DMR with 2 TG's 1 on TG 1 and 1 on TG 2 so there is no other frequency to jump to.
What is strange is that this was happy until the audio levels got jacked up. The 325p2 996p2 436 536 sds100 and sds200 all act the same 1 mile from tower site to 25 miles from tower site. The 160 260 TRX1 and TRX2 all work solid.

 

[dmfalk]

At least the '100 has a volume offset for situations like this......

 

[buddrousa]

So does the 436 and 536.
But it does no good when the AUDIO DROPS OUT COMPLETLEY.

 

[dispatch235]

I don't have an DMR in my area, but a nearby PD and FD started using NXDN single frequency repeaters, and my Whistler TRX 1 &2 along with my BCD260N picked them up perfect, and my Kenwood NX-3720 worked perfect also, but my Unidens 536 and SDS200 would drop the audio sounds like similar to what your DMR is doing. On the 536 and 200 I believe it was the RAN I set to search instead of selecting the ran ID myself and now they work fine.?!!?? I still haven't gotten figured out what is going on....

 

[crippledchicken]

My DMR and NXDN both, seem to overmodulate. The volume offset only goes to -3 on my 536. I haven't checked the sds200 yet but I think I did set the offset on it too.

 

[Ubbe]

The volume offset only changes the volumes level during that call. If you have the volume control set at 10 and the offset are -3 then it is the same as having the volume at 7. It doesn't help over modulated sound and are only to set the listening level. Over modulation happens in the scanners DSP processor, if it isn't happening already at the transmit source.

It's a digital signal so issue are in the digital handling and not NFM/FM, squelch, volume or any of the analog parameters.

/Ubbe

 

[crippledchicken]

It seems less distorted when I use the offset on some, but not all transmissions. Saves me from having to reach for the volume control as often.