Date   
Re: Can I bulild an offline dmr server?

Ben Fogt
 

This might not be the best place for the following response, but you can quickly and easily spin up an XLX server, and use the "DMR gateway" feature in pi-star to connect to it. The pi-star devices just need their host files updated to reflect the IP of the XLX server. This is the quickest and easiest way to spin up a private DMR server, i think.

On Sat, Sep 7, 2019 at 7:07 PM playexata <ayhantar21@...> wrote:
We have a system was builed  with internet but our internet provider go for a system renewal now we need to work with out internet for 3-5 months. we want to use our dmr radios (which is connected to mmdvm hotsposts) to comminicite. Currently we have  a server runs in office and long range wifi antenas all around mountains.

Questation : Can I build an offline dmr server? which has talk groups or at least some sorth of groups in to the server ?



--
Ben Fogt
N5AMD

Re: Tune audio levels in DStar gateway #analog_bridge

Waldek SP2ONG
 

Mike

Thank you for sharing your experience
and I can confirm your suggestion after the trials I did with linear gain and AGC

Waldek

Re: Tune audio levels in DStar gateway #analog_bridge

Mike Zingman - N4IRR
 

For transcoding, I would never use AGC.  Only use linear gain (AUDIO_USE_GAIN) for best results.

Re: Tune audio levels in DStar gateway #analog_bridge

Waldek SP2ONG
 

Steve,

Thank you, set in the first AB

aslAudio = AUDIO_UNITY                   
dmrAudio = AUDIO_UNITY

and try to tune in the second AB

aslAudio = AUDIO_USE_GAIN                 
dmrAudio = AUDIO_USE_GAIN


and adjust agcGain and dmrGain

One question about a scalar, if I would like to use AUDIO_USE_GAIN, it is only a multiplier, for example agcGain = 2, this is 2 times the level
but if I would like to use AUDIO_USE_AGC, the agcGain scalar will be in dB?

Waldek


Re: Tune audio levels in DStar gateway #analog_bridge

Steve N4IRS
 

Set one Analog_Bridge to unity in both directions and use the other Analog_Bridge to set levels in and out.

Sent via smoke signal (AT&T)


From: main@DVSwitch.groups.io <main@DVSwitch.groups.io> on behalf of Waldek SP2ONG <sp2ong@...>
Sent: Tuesday, September 10, 2019 7:02:31 AM
To: main@DVSwitch.groups.io <main@DVSwitch.groups.io>
Subject: [DVSwitch] Tune audio levels in DStar gateway #analog_bridge
 

[Edited Message Follows]

Hi,

I would like to set the correct audio levels in my DStar gateway, where I use ircddbgateway / MMDVM_Bridge and 2 Ananlog_Bidges connected via USRP

A simple AB connection diagram is below
 
AB DMR                                                    AB DStar
[USRP]                                                       [USRP]
RX   <--------------------------------------------- TX
TX    ---------------------------------------------> RX
aslAudio = AUDIO_USE_GAIN                    aslAudio = AUDIO_USE_GAIN
dmrAudio = AUDIO_USE_GAIN                  dmrAudio = AUDIO_USE_GAIN
agcGain = 10                                              agcGain = 10
dmrGain = 0.35                                           dmrGain = 0.35

I would like to be sure that when I set the audio levels from DSTAR to DMR I need to correct it:

Tune in USRP_DSTAR agcGain  and dmrGain in USRP_DMR    ????


when I set the audio levels from DMR to DSTAR:

Tune  in USRP_DMR agcGain and dmrGain in USRP_DSTAR     ???

I would like to suggest whether it is correct or how to choose the right levels in both directions

73 Waldek SP2ONG

Tune audio levels in DStar gateway #analog_bridge

Waldek SP2ONG
 
Edited

Hi,

I would like to set the correct audio levels in my DStar gateway, where I use ircddbgateway / MMDVM_Bridge and 2 Ananlog_Bidges connected via USRP

A simple AB connection diagram is below
 
AB DMR                                                    AB DStar
[USRP]                                                       [USRP]
RX   <--------------------------------------------- TX
TX    ---------------------------------------------> RX
aslAudio = AUDIO_USE_GAIN                    aslAudio = AUDIO_USE_GAIN
dmrAudio = AUDIO_USE_GAIN                  dmrAudio = AUDIO_USE_GAIN
agcGain = 10                                              agcGain = 10
dmrGain = 0.35                                           dmrGain = 0.35

I would like to be sure that when I set the audio levels from DSTAR to DMR I need to correct it:

Tune in USRP_DSTAR agcGain  and dmrGain in USRP_DMR    ????


when I set the audio levels from DMR to DSTAR:

Tune  in USRP_DMR agcGain and dmrGain in USRP_DSTAR     ???

I would like to suggest whether it is correct or how to choose the right levels in both directions

73 Waldek SP2ONG

Re: Jackhammer Sound

 

The effect started on reboot of computer. Did a fresh install of the emulator still had the same problem. Found the purge command on google. Worked ever since.


From: main@DVSwitch.groups.io <main@DVSwitch.groups.io> on behalf of Steve N4IRS <szingman@...>
Sent: Tuesday, September 10, 2019 10:35:34 AM
To: main@DVSwitch.groups.io <main@DVSwitch.groups.io>
Subject: Re: [DVSwitch] Jackhammer Sound
 
Ernie,
Once the computer froze, did you restart the computer and test before purging and reinstalling md380-emu?

Steve

On 9/10/19 3:12 AM, Ernie Gm7kbk wrote:
I got the jack hammer effect after my computer froze. Would not go away.
sudo apt-get --purge  remove md380-emu then install new copy fixed my problem.

Re: Jackhammer Sound

Steve N4IRS
 

Ernie,
Once the computer froze, did you restart the computer and test before purging and reinstalling md380-emu?

Steve

On 9/10/19 3:12 AM, Ernie Gm7kbk wrote:
I got the jack hammer effect after my computer froze. Would not go away.
sudo apt-get --purge  remove md380-emu then install new copy fixed my problem.

Re: Jackhammer Sound

 

I got the jack hammer effect after my computer froze. Would not go away.
sudo apt-get --purge  remove md380-emu then install new copy fixed my problem.

Re: Jackhammer Sound

Waldek SP2ONG
 
Edited

Steve ,

I agree that it's currently difficult to find the reason for this problem, but it seems that this is a md380-emu problem.
Once when I was looking for where the problem was
and I had a "jackhammer" audio, I only changed the IP address for md380-emu to the address on the local network of the computer where md380-emu also worked and
everything worked correctly in DMR.
When I switched back to 127.0.0.1, there was a problem with the audio.

Restarting md380-emu doesn't always help. This is a difficult problem to locate but it would be nice if we could locate it.

The md380-emu restart macro is a good idea

73 Waldek

Re: Jackhammer Sound

Steve N4IRS
 

I have to start this message by stating that I have never heard the "jack hammer" on my DVSM node. Mike says he got it once but he is not sure what caused it. We do have some ideas and we are discussing possible remedies. We think md380-emu gets confused and until the emulator is restarted the noise will continue.

With this in mind, rather then rebooting the entire node, which tells us nothing, just restart the emulator. The nature of the UDP connection from AB allows this. I can suggest two methods to restart the emulator:
1: systemctl restart md380-emu from the command line.
2: add a macro to AB.ini in the [MACRO] stanza
5678 = systemctl restart md380.emu

With the second option, when you hear the "jack hammer" send *5678 from DVSM.

Please let us know the result. When reporting please let us know the mode (DMR, YSF, NXDN...) and where the  "jack hammer" is heard.

Steve N4IRS

On 9/9/19 4:08 PM, Chris K7AZ via Groups.Io wrote:
Problem cleared after several reboots and verification the emulator was enabled.    Was about to reload from last good snapshot but it just started working for no good reasons.   Doing a COP 4 command was used to verify tone on TG.  



Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: Tom Corcoran <tcorcoran@...>
Date: 9/9/19 12:35 (GMT-08:00)
Subject: Re: [DVSwitch] Jackhammer Sound

Chris,

does this mean that you disabled the md380-emu emulator or did issue disappear with emulator turned on?

--
Tom VE3NY

Re: Jackhammer Sound

Chris K7AZ
 

Problem cleared after several reboots and verification the emulator was enabled.    Was about to reload from last good snapshot but it just started working for no good reasons.   Doing a COP 4 command was used to verify tone on TG.  



Sent from my Verizon, Samsung Galaxy smartphone

-------- Original message --------
From: Tom Corcoran <tcorcoran@...>
Date: 9/9/19 12:35 (GMT-08:00)
To: main@DVSwitch.groups.io
Subject: Re: [DVSwitch] Jackhammer Sound

Chris,

does this mean that you disabled the md380-emu emulator or did issue disappear with emulator turned on?

--
Tom VE3NY

Re: Jackhammer Sound

Tom Corcoran
 

Chris,

does this mean that you disabled the md380-emu emulator or did issue disappear with emulator turned on?

--
Tom VE3NY

Re: Troubleshooting ThumbDV HW AMBE chip with Analog_Bridge

Steve N4IRS
 

Plug the ThumbDV directly into the host. No hub. Run  AMBEtest4.py to verify proper operation.

Sent via smoke signal (AT&T)


From: main@DVSwitch.groups.io <main@DVSwitch.groups.io> on behalf of TG9AOR <qrz@...>
Sent: Monday, September 9, 2019 1:33:51 PM
To: main@DVSwitch.groups.io <main@DVSwitch.groups.io>
Subject: Re: [DVSwitch] Troubleshooting ThumbDV HW AMBE chip with Analog_Bridge
 
Hello Friend. Message #2143 addresses a procedure to verify the latency timer.

As for me, I gave up on integrating DSTAR to the node because of this very same issue, even if the timer is set to 1, the USB device is in a powered USB hub. This past saturday, as I was rebuilding my AllStar Node I gave C4FM a try with the NWDigital ThmbDV in stead of the md380-emu. While it does not stutter, The audio does get fragmented. Pi is on the local LAN, as well as the USB Device.

I ended up using the md380-emu for C4FM as well.


73
--
José Roberto Ruíz García Salas
TG9AOR

Re: Troubleshooting ThumbDV HW AMBE chip with Analog_Bridge

TG9AOR
 

Hello Friend. Message #2143 addresses a procedure to verify the latency timer.

As for me, I gave up on integrating DSTAR to the node because of this very same issue, even if the timer is set to 1, the USB device is in a powered USB hub. This past saturday, as I was rebuilding my AllStar Node I gave C4FM a try with the NWDigital ThmbDV in stead of the md380-emu. While it does not stutter, The audio does get fragmented. Pi is on the local LAN, as well as the USB Device.

I ended up using the md380-emu for C4FM as well.


73
--
José Roberto Ruíz García Salas
TG9AOR

Re: Can I bulild an offline dmr server?

 

No problem on talkgroups. All info here join subgroup Hblink.

Re: Can I bulild an offline dmr server?

playexata
 

Thanks for the answer.

But can Hblink provide multiple talk groups? I did a reserch on internet  but I could not found anything about it

Re: Can I bulild an offline dmr server?

 

If you can get all your hotspots to connect to your office server network then Hblink should work. I have Hblink running on my home network with connections from other computers.

Can I bulild an offline dmr server?

playexata
 

We have a system was builed  with internet but our internet provider go for a system renewal now we need to work with out internet for 3-5 months. we want to use our dmr radios (which is connected to mmdvm hotsposts) to comminicite. Currently we have  a server runs in office and long range wifi antenas all around mountains.

Questation : Can I build an offline dmr server? which has talk groups or at least some sorth of groups in to the server ?

Re: Troubleshooting ThumbDV HW AMBE chip with Analog_Bridge

Waldek SP2ONG
 

Ok, Steve, thank you. I thought I was using the wrong configuration to use md380-emu.
Although in the log you can not see that md380 will be used. There is information that


I: 2019-09-07 06:54:58.179 Connecting to emulator on host 127.0.0.1:2500
W: 2019-09-07 06:54:58.179 Using software MBE decoder version 1.2.3
W: 2019-09-07 06:54:58.179 Using software OP25 IMBE/AMBE vocoder

Still, sometimes strange audio using md380 (Jackhammer) occurs. It changes the port of md380-emu and sometimes helps, but I think this is not the reason for strange audio.