Date   
Re: XLX Reflector Transcoding

k6fed@...
 

Jose,

Thank you very much for the information. This is helpful and I appreciate the quick response.

73
Frank K6FED


--------------------------------------------

On Tue, 4/17/18, TG9AOR <@TG9AOR> wrote:

Subject: Re: [ambe] XLX Reflector Transcoding
To: ambe@nw-digital-radio.groups.io
Date: Tuesday, April 17, 2018, 9:05 AM

Hello Frank. This guide
by IZ7AUH which he shared with me via Yahoo! Group
xlxd-star digest some time ago pointed to the items needed
to be renamed within the FT_Prog in order for the ThumbDV to
be recognized by the ambed program. The guide is in italian
but you will be able to go about it as I could as well. The
information regarding modifying the ThumbDV is on the second
page.

73 de TG9AOR

Re: XLX Reflector Transcoding

TG9AOR
 

Hello Frank. This guide by IZ7AUH which he shared with me via Yahoo! Group xlxd-star digest some time ago pointed to the items needed to be renamed within the FT_Prog in order for the ThumbDV to be recognized by the ambed program. The guide is in italian but you will be able to go about it as I could as well. The information regarding modifying the ThumbDV is on the second page.

73 de TG9AOR

XLX Reflector Transcoding

k6fed@...
 

Is there a documented procedure for setting up two ThumbDV's to transcode on the XLX reflectors?


Thanks 
Frank

Re: Installing Windows version on Linux with MSIexec and Wine

KB3OIL@...
 

David/John,

Thanks David. John, yes I know about the Virtual box.  I've introduced myself to Linux going that route from WIndows.  I am trying to rid myself of Windows, but if that's the only way I can reinstall DMR software,  I might give it a go.   Just for your information I was able to install another Windows program (MobaXterm) that uses the Microsoft installer (.msi) without a problem.  It installed perfectly except for the username/password entres shows up on the right side of Web page and then the typed letters are entered from right to left  (ie drowssap).  Weird.  Really weird.  Every other SSH function seems to work perfectly.  The file manager, full screen editor, file transfer from from Windows to Linux and now Linux to Linux.  Anyway, thanks for the replies.

Re: Installing Windows version on Linux with MSIexec and Wine

 

If you have a Windows license, you can setup a virtual machine on the Linux box.  https://www.oracle.com/virtualization/virtualbox/index.html

On Sun, Apr 15, 2018 at 12:53 AM, KB3OIL via Groups.Io <KB3OIL@...> wrote:
Note; originally posted on the main group's inquiries.

I had BlueDV installed on my Win 10 computer and used it with my ThumbDV with no problems.  My year old Dell recently dumped all for the fourth time.  Dell talked me through a software fix once and it went back to Dell hardware people twice for fixes.  Everything had to be reinstalled  each time.  After this recent major problem I dumped Windows 10 and installed one of the Ubuntu Linux's.  I now understand that AMBE 3000 is not a part of the Linux version of BlueDV (let me know if that is not correct).  I'm pretty much new to everything (except the world) including Linux.  However I did stumble on a site saying you can install a .msi file (Microsoft Installer) with Msiexec and Wine (Google both together).  I have not had any success doing this, but like I said, I'm still new to all of this.  Has anyone tried using these files or are able load BlueDV and use their ThumbDV with an Ubuntu version of Linux.




--


John D. Hays
Edmonds, WA
K7VE

   

Re: Installing Windows version on Linux with MSIexec and Wine

 

That is correct. The AMBE3000 is not supported on BlueDV Linux.

Greets and 73,

David PA7LIM

Op 15/04/2018 om 09:53 schreef KB3OIL via Groups.Io:

Note; originally posted on the main group's inquiries.

I had BlueDV installed on my Win 10 computer and used it with my ThumbDV with no problems.  My year old Dell recently dumped all for the fourth time.  Dell talked me through a software fix once and it went back to Dell hardware people twice for fixes.  Everything had to be reinstalled  each time.  After this recent major problem I dumped Windows 10 and installed one of the Ubuntu Linux's.  I now understand that AMBE 3000 is not a part of the Linux version of BlueDV (let me know if that is not correct).  I'm pretty much new to everything (except the world) including Linux.  However I did stumble on a site saying you can install a .msi file (Microsoft Installer) with Msiexec and Wine (Google both together).  I have not had any success doing this, but like I said, I'm still new to all of this.  Has anyone tried using these files or are able load BlueDV and use their ThumbDV with an Ubuntu version of Linux.


Installing Windows version on Linux with MSIexec and Wine

KB3OIL@...
 

Note; originally posted on the main group's inquiries.

I had BlueDV installed on my Win 10 computer and used it with my ThumbDV with no problems.  My year old Dell recently dumped all for the fourth time.  Dell talked me through a software fix once and it went back to Dell hardware people twice for fixes.  Everything had to be reinstalled  each time.  After this recent major problem I dumped Windows 10 and installed one of the Ubuntu Linux's.  I now understand that AMBE 3000 is not a part of the Linux version of BlueDV (let me know if that is not correct).  I'm pretty much new to everything (except the world) including Linux.  However I did stumble on a site saying you can install a .msi file (Microsoft Installer) with Msiexec and Wine (Google both together).  I have not had any success doing this, but like I said, I'm still new to all of this.  Has anyone tried using these files or are able load BlueDV and use their ThumbDV with an Ubuntu version of Linux.

Re: Ambe server on raspberry pi 3 B+

 

And on MacOS - Buster.

On Thu, Apr 5, 2018 at 1:19 PM, John D Hays - K7VE <john@...> wrote:
AMBEserver is a service that applications use to convert digitized speech into AMBE and vice versa.  Applications that have been adapted to use AMBEserver include, but are not limited to:

BlueDV (Windows, etc.)
WinDV
DummyRepeater (Windows/Linux)

If one was using DummyRepeater/ircDDBGateway on a Raspberry Pi, then those applications could use the AMBEserver on the same (or a different) Raspberry Pi.

AMBEserver works with either the ThumbDV or PiDV hardware.

The Microphone/Speaker would be integrated in the above applications.



On Thu, Apr 5, 2018 at 12:11 PM, <tcorcoran@...> wrote:
Hello John,
if Ambe server is on RPi, can I use ThumbDV? If so, how do I connect microphone & speaker?

tnx .... Tom VE3NY 



--


John D. Hays
Edmonds, WA
K7VE

   




--


John D. Hays
Edmonds, WA
K7VE

   

Re: Ambe server on raspberry pi 3 B+

 

AMBEserver is a service that applications use to convert digitized speech into AMBE and vice versa.  Applications that have been adapted to use AMBEserver include, but are not limited to:

BlueDV (Windows, etc.)
WinDV
DummyRepeater (Windows/Linux)

If one was using DummyRepeater/ircDDBGateway on a Raspberry Pi, then those applications could use the AMBEserver on the same (or a different) Raspberry Pi.

AMBEserver works with either the ThumbDV or PiDV hardware.

The Microphone/Speaker would be integrated in the above applications.



On Thu, Apr 5, 2018 at 12:11 PM, <tcorcoran@...> wrote:
Hello John,
if Ambe server is on RPi, can I use ThumbDV? If so, how do I connect microphone & speaker?

tnx .... Tom VE3NY 



--


John D. Hays
Edmonds, WA
K7VE

   

Re: Ambe server on raspberry pi 3 B+

Tom Corcoran
 

Hello John,
if Ambe server is on RPi, can I use ThumbDV? If so, how do I connect microphone & speaker?

tnx .... Tom VE3NY 

Re: Ambe server on raspberry pi 3 B+

 

This has two answers --

1. Install current Raspbian and follow these steps -- https://nw-digital-radio.groups.io/g/ambe/wiki/AMBEserver-Addendum#Quick-Build-on-Linux (Quick Build on Linux)

2. Install latest (not stable/supported) Compass Wilderness -- http://archive.compasslinux.org/images/wilderness/ and apt-get install the ambeserver package.

On Wed, Apr 4, 2018 at 7:16 AM, Ke4tlc <ke4tlc@...> wrote:
How can I install ambe server on raspberry pi 3 B+.




--


John D. Hays
Edmonds, WA
K7VE

   

Ambe server on raspberry pi 3 B+

Ke4tlc <ke4tlc@...>
 

How can I install ambe server on raspberry pi 3 B+.

Re: ThumbDV & RaspiPi runs not stable

anton.weigl@...
 

I have now deletetd the BlueDV AMBE App from my smartphone. The AMBE-Server is now running without problems. I will monitor it during the day. With the Windows Version of BlueDV no problem :).

Re: ThumbDV & RaspiPi runs not stable

anton.weigl@...
 

Unfortunately it doesn´t helped. I have checked my power supply it provides 2.5A  and than I put the ThumbDV in a 3.0 USB HUB with external power supply.

pi@compass:~ $ sudo systemctl status ambeserver@...
● ambeserver@... - DV3000 Daemon
   Loaded: loaded (/lib/systemd/system/ambeserver@.service; enabled)
   Active: failed (Result: exit-code) since Sun 2018-03-25 13:26:02 CEST; 2h 26min ago
  Process: 4185 ExecStart=/usr/sbin/AMBEserver -p ${UDP_PORT} -i /dev/%i $AMBESERVER_FLAGS (code=exited, status=1/FAILURE)
  Process: 4182 ExecStartPre=/bin/chmod 0660 /dev/%i (code=exited, status=0/SUCCESS)
  Process: 4179 ExecStartPre=/bin/chgrp dialout /dev/%i (code=exited, status=0/SUCCESS)
 Main PID: 4185 (code=exited, status=1/FAILURE)

Mar 25 12:55:55 compass systemd[1]: Started DV3000 Daemon.
Mar 25 12:55:55 compass AMBEserver[4185]: AMBEserver: Starting...
Mar 25 12:55:55 compass AMBEserver[4185]: AMBEserver: Opened serial port /dev/ttyUSB0 at 460800 bps.
Mar 25 12:55:55 compass AMBEserver[4185]: AMBEserver: Initialized AMBE3000R version V120.E100.XXXX.C106.G514.R009.B0010411.C0020208.
Mar 25 12:55:55 compass AMBEserver[4185]: AMBEserver: Listening for connections on UDP port 2460.
Mar 25 13:26:02 compass AMBEserver[4185]: AMBEserver: Couldn't find start byte in serial data
Mar 25 13:26:02 compass AMBEserver[4185]: AMBEserver: processSerial failed to read packet
Mar 25 13:26:02 compass systemd[1]: ambeserver@...: main process exited, code=exited, status=1/FAILURE
Mar 25 13:26:02 compass systemd[1]: Unit ambeserver@... entered failed state.
Mar 25 13:26:02 compass systemd[1]: Triggering OnFailure= dependencies of ambeserver@....
pi@compass:~ $


Maybe it is a problem with the BlueDV AMBE Software for Android by PA7LIM. I will deinstall it now and look what happens.

73, Anton

Re: ThumbDV & RaspiPi runs not stable

 

This is a likely explanation. 

On Sat, Mar 24, 2018 at 6:34 PM, Steven Blackford <kb7sqi@...> wrote:

Anton,

   Sounds like you could have a issue with your power supply.  I’ve ran into that a few times with PI3 once.  After I replaced the power supply with a 2.5 amp power supply, the ThumbDV didn’t have any more issues.  Hope that helps.  73 de K4SQI!

 

Steve, K4SQI

 

 

From: anton.weigl@...
Sent: Saturday, March 24, 2018 8:00 PM
To: ambe@....io
Subject: Re: [ambe] ThumbDV & RaspiPi runs not stable

 

Thanks for your reply Jeremy. But i don´t geht the point :(. Problem is that the service stops itself and i don´t know why.  What I did is using the THUMBDV via the BLUEDV Android App, But it also stops itself when i dont do anything.

pi@compass:~ $ pi@compass:~ $ sudo systemctl status ambeserver@...
-bash: pi@compass:~: command not found
● ambeserver@... - DV3000 Daemon
   Loaded: loaded (/lib/systemd/system/ambeserver@.service; enabled)
   Active: failed (Result: exit-code) since Sat 2018-03-24 15:36:02 CET; 9h ago
 Main PID: 2683 (code=exited, status=1/FAILURE)

Mar 24 09:44:10 compass systemd[1]: Started DV3000 Daemon.
Mar 24 09:44:10 compass AMBEserver[2683]: AMBEserver: Starting...
Mar 24 09:44:10 compass AMBEserver[2683]: AMBEserver: Opened serial port /dev/ttyUSB0 at 460800 bps.
Mar 24 09:44:10 compass AMBEserver[2683]: AMBEserver: Initialized AMBE3000R version V120.E100.XXXX.C106.G514.R009.B0010411.C0020208.
Mar 24 09:44:10 compass AMBEserver[2683]: AMBEserver: Listening for connections on UDP port 2460.
Mar 24 15:36:02 compass AMBEserver[2683]: AMBEserver: Couldn't find start byte in serial data
Mar 24 15:36:02 compass AMBEserver[2683]: AMBEserver: processSerial failed to read packet
Mar 24 15:36:02 compass systemd[1]: ambeserver@...: main process exited, code=exited, status=1/FAILURE
Mar 24 15:36:02 compass systemd[1]: Unit ambeserver@... entered failed state.
Mar 24 15:36:02 compass systemd[1]: Triggering OnFailure= dependencies of ambeserver@....
pi@compass:~ $

there is something between 09:4:10 and 15:36:02 i don´t get. Sorry have no ideas. I can´t measure power consumption of the THUMBDV Stick, I could plug it into a external powered usb 3.0 hub. But up to my knowledge the raspi 3 has usb 3.0 ports which provide enough power? I also run a SharkRF Openspot in the same network, but it is on a different port as i know.

73, anton

 




--


John D. Hays
Edmonds, WA
K7VE

   

Re: ThumbDV & RaspiPi runs not stable

Steven Blackford
 

Anton,

   Sounds like you could have a issue with your power supply.  I’ve ran into that a few times with PI3 once.  After I replaced the power supply with a 2.5 amp power supply, the ThumbDV didn’t have any more issues.  Hope that helps.  73 de K4SQI!

 

Steve, K4SQI

 

 

From: anton.weigl@...
Sent: Saturday, March 24, 2018 8:00 PM
To: ambe@nw-digital-radio.groups.io
Subject: Re: [ambe] ThumbDV & RaspiPi runs not stable

 

Thanks for your reply Jeremy. But i don´t geht the point :(. Problem is that the service stops itself and i don´t know why.  What I did is using the THUMBDV via the BLUEDV Android App, But it also stops itself when i dont do anything.

pi@compass:~ $ pi@compass:~ $ sudo systemctl status ambeserver@...
-bash: pi@compass:~: command not found
● ambeserver@... - DV3000 Daemon
   Loaded: loaded (/lib/systemd/system/ambeserver@.service; enabled)
   Active: failed (Result: exit-code) since Sat 2018-03-24 15:36:02 CET; 9h ago
 Main PID: 2683 (code=exited, status=1/FAILURE)

Mar 24 09:44:10 compass systemd[1]: Started DV3000 Daemon.
Mar 24 09:44:10 compass AMBEserver[2683]: AMBEserver: Starting...
Mar 24 09:44:10 compass AMBEserver[2683]: AMBEserver: Opened serial port /dev/ttyUSB0 at 460800 bps.
Mar 24 09:44:10 compass AMBEserver[2683]: AMBEserver: Initialized AMBE3000R version V120.E100.XXXX.C106.G514.R009.B0010411.C0020208.
Mar 24 09:44:10 compass AMBEserver[2683]: AMBEserver: Listening for connections on UDP port 2460.
Mar 24 15:36:02 compass AMBEserver[2683]: AMBEserver: Couldn't find start byte in serial data
Mar 24 15:36:02 compass AMBEserver[2683]: AMBEserver: processSerial failed to read packet
Mar 24 15:36:02 compass systemd[1]: ambeserver@...: main process exited, code=exited, status=1/FAILURE
Mar 24 15:36:02 compass systemd[1]: Unit ambeserver@... entered failed state.
Mar 24 15:36:02 compass systemd[1]: Triggering OnFailure= dependencies of ambeserver@....
pi@compass:~ $

there is something between 09:4:10 and 15:36:02 i don´t get. Sorry have no ideas. I can´t measure power consumption of the THUMBDV Stick, I could plug it into a external powered usb 3.0 hub. But up to my knowledge the raspi 3 has usb 3.0 ports which provide enough power? I also run a SharkRF Openspot in the same network, but it is on a different port as i know.

73, anton

 

Re: ThumbDV & RaspiPi runs not stable

anton.weigl@...
 

Thanks for your reply Jeremy. But i don´t geht the point :(. Problem is that the service stops itself and i don´t know why.  What I did is using the THUMBDV via the BLUEDV Android App, But it also stops itself when i dont do anything.

pi@compass:~ $ pi@compass:~ $ sudo systemctl status ambeserver@...
-bash: pi@compass:~: command not found
● ambeserver@... - DV3000 Daemon
   Loaded: loaded (/lib/systemd/system/ambeserver@.service; enabled)
   Active: failed (Result: exit-code) since Sat 2018-03-24 15:36:02 CET; 9h ago
 Main PID: 2683 (code=exited, status=1/FAILURE)

Mar 24 09:44:10 compass systemd[1]: Started DV3000 Daemon.
Mar 24 09:44:10 compass AMBEserver[2683]: AMBEserver: Starting...
Mar 24 09:44:10 compass AMBEserver[2683]: AMBEserver: Opened serial port /dev/ttyUSB0 at 460800 bps.
Mar 24 09:44:10 compass AMBEserver[2683]: AMBEserver: Initialized AMBE3000R version V120.E100.XXXX.C106.G514.R009.B0010411.C0020208.
Mar 24 09:44:10 compass AMBEserver[2683]: AMBEserver: Listening for connections on UDP port 2460.
Mar 24 15:36:02 compass AMBEserver[2683]: AMBEserver: Couldn't find start byte in serial data
Mar 24 15:36:02 compass AMBEserver[2683]: AMBEserver: processSerial failed to read packet
Mar 24 15:36:02 compass systemd[1]: ambeserver@...: main process exited, code=exited, status=1/FAILURE
Mar 24 15:36:02 compass systemd[1]: Unit ambeserver@... entered failed state.
Mar 24 15:36:02 compass systemd[1]: Triggering OnFailure= dependencies of ambeserver@....
pi@compass:~ $

there is something between 09:4:10 and 15:36:02 i don´t get. Sorry have no ideas. I can´t measure power consumption of the THUMBDV Stick, I could plug it into a external powered usb 3.0 hub. But up to my knowledge the raspi 3 has usb 3.0 ports which provide enough power? I also run a SharkRF Openspot in the same network, but it is on a different port as i know.

73, anton

Re: ThumbDV & RaspiPi runs not stable

Annaliese McDermond
 

The start of every packet from the ThumbDV starts with a 0x61 byte. If AMBEServer cannot find that byte in any of the responses, it errors out. This is usually due to errors in AMBEserver by hand and it’s still running?

--
Annaliese McDermond
nh6z@...

On Mar 24, 2018, at 1:28 AM, anton.weigl@... wrote:

broken again when i wake up this morning (without usage)

pi@compass:~ $ sudo systemctl status ambeserver@...
● ambeserver@... - DV3000 Daemon
Loaded: loaded (/lib/systemd/system/ambeserver@.service; enabled)
Active: failed (Result: exit-code) since Sat 2018-03-24 09:23:38 CET; 1min 13s ago
Process: 1640 ExecStart=/usr/sbin/AMBEserver -p ${UDP_PORT} -i /dev/%i $AMBESERVER_FLAGS (code=exited, status=1/FAILURE)
Process: 1637 ExecStartPre=/bin/chmod 0660 /dev/%i (code=exited, status=0/SUCCESS)
Process: 1634 ExecStartPre=/bin/chgrp dialout /dev/%i (code=exited, status=0/SUCCESS)
Main PID: 1640 (code=exited, status=1/FAILURE)

Mar 24 02:50:50 compass systemd[1]: Started DV3000 Daemon.
Mar 24 02:50:50 compass AMBEserver[1640]: AMBEserver: Starting...
Mar 24 02:50:50 compass AMBEserver[1640]: AMBEserver: Opened serial port /dev/ttyUSB0 at 460800 bps.
Mar 24 02:50:50 compass AMBEserver[1640]: AMBEserver: Initialized AMBE3000R version V120.E100.XXXX.C106.G514.R009.B0010411.C0020208.
Mar 24 02:50:50 compass AMBEserver[1640]: AMBEserver: Listening for connections on UDP port 2460.
Mar 24 09:23:38 compass AMBEserver[1640]: AMBEserver: Couldn't find start byte in serial data
Mar 24 09:23:38 compass AMBEserver[1640]: AMBEserver: processSerial failed to read packet
Mar 24 09:23:38 compass systemd[1]: ambeserver@...: main process exited, code=exited, status=1/FAILURE
Mar 24 09:23:38 compass systemd[1]: Unit ambeserver@... entered failed state.
Mar 24 09:23:38 compass systemd[1]: Triggering OnFailure= dependencies of ambeserver@....
pi@compass:~ $


any hints?

Re: ThumbDV & RaspiPi runs not stable

anton.weigl@...
 

broken again when i wake up this morning (without usage)

pi@compass:~ $ sudo systemctl status ambeserver@...
● ambeserver@... - DV3000 Daemon
   Loaded: loaded (/lib/systemd/system/ambeserver@.service; enabled)
   Active: failed (Result: exit-code) since Sat 2018-03-24 09:23:38 CET; 1min 13s ago
  Process: 1640 ExecStart=/usr/sbin/AMBEserver -p ${UDP_PORT} -i /dev/%i $AMBESERVER_FLAGS (code=exited, status=1/FAILURE)
  Process: 1637 ExecStartPre=/bin/chmod 0660 /dev/%i (code=exited, status=0/SUCCESS)
  Process: 1634 ExecStartPre=/bin/chgrp dialout /dev/%i (code=exited, status=0/SUCCESS)
 Main PID: 1640 (code=exited, status=1/FAILURE)

Mar 24 02:50:50 compass systemd[1]: Started DV3000 Daemon.
Mar 24 02:50:50 compass AMBEserver[1640]: AMBEserver: Starting...
Mar 24 02:50:50 compass AMBEserver[1640]: AMBEserver: Opened serial port /dev/ttyUSB0 at 460800 bps.
Mar 24 02:50:50 compass AMBEserver[1640]: AMBEserver: Initialized AMBE3000R version V120.E100.XXXX.C106.G514.R009.B0010411.C0020208.
Mar 24 02:50:50 compass AMBEserver[1640]: AMBEserver: Listening for connections on UDP port 2460.
Mar 24 09:23:38 compass AMBEserver[1640]: AMBEserver: Couldn't find start byte in serial data
Mar 24 09:23:38 compass AMBEserver[1640]: AMBEserver: processSerial failed to read packet
Mar 24 09:23:38 compass systemd[1]: ambeserver@...: main process exited, code=exited, status=1/FAILURE
Mar 24 09:23:38 compass systemd[1]: Unit ambeserver@... entered failed state.
Mar 24 09:23:38 compass systemd[1]: Triggering OnFailure= dependencies of ambeserver@....
pi@compass:~ $


any hints?

ThumbDV & RaspiPi runs not stable

anton.weigl@...
 

Cheers and thanks for your great product.

Iam new owner of a ThumbDVStick. I use it on my Raspi3 with your Compass Image (latest).

Unfortunately the AMBEserver stops sometimes and it only helps to stop&start the service.

Maybe you have a idea?

pi@compass:~ $ sudo systemctl status ambeserver@...
● ambeserver@... - DV3000 Daemon
   Loaded: loaded (/lib/systemd/system/ambeserver@.service; enabled)
   Active: failed (Result: exit-code) since Sat 2018-03-24 02:43:29 CET; 4min 56s ago
  Process: 1270 ExecStart=/usr/sbin/AMBEserver -p ${UDP_PORT} -i /dev/%i $AMBESERVER_FLAGS (code=exited, status=1/FAILURE)
  Process: 1267 ExecStartPre=/bin/chmod 0660 /dev/%i (code=exited, status=0/SUCCESS)
  Process: 1264 ExecStartPre=/bin/chgrp dialout /dev/%i (code=exited, status=0/SUCCESS)
 Main PID: 1270 (code=exited, status=1/FAILURE)

Mar 24 01:29:48 compass systemd[1]: Started DV3000 Daemon.
Mar 24 01:29:48 compass AMBEserver[1270]: AMBEserver: Starting...
Mar 24 01:29:48 compass AMBEserver[1270]: AMBEserver: Opened serial port /dev/ttyUSB0 at 460800 bps.
Mar 24 01:29:48 compass AMBEserver[1270]: AMBEserver: Initialized AMBE3000R version V120.E100.XXXX.C106.G514.R009.B0010411.C0020208.
Mar 24 01:29:48 compass AMBEserver[1270]: AMBEserver: Listening for connections on UDP port 2460.
Mar 24 02:43:29 compass AMBEserver[1270]: AMBEserver: Couldn't find start byte in serial data
Mar 24 02:43:29 compass AMBEserver[1270]: AMBEserver: processSerial failed to read packet
Mar 24 02:43:29 compass systemd[1]: ambeserver@...: main process exited, code=exited, status=1/FAILURE
Mar 24 02:43:29 compass systemd[1]: Unit ambeserver@... entered failed state.
Mar 24 02:43:29 compass systemd[1]: Triggering OnFailure= dependencies of ambeserver@....
pi@compass:~ $ sudo systemctl start ambeserver@...
pi@compass:~ $ sudo systemctl status ambeserver@...
● ambeserver@... - DV3000 Daemon
   Loaded: loaded (/lib/systemd/system/ambeserver@.service; enabled)
   Active: active (running) since Sat 2018-03-24 02:49:03 CET; 2s ago
  Process: 1581 ExecStartPre=/bin/chmod 0660 /dev/%i (code=exited, status=0/SUCCESS)
  Process: 1578 ExecStartPre=/bin/chgrp dialout /dev/%i (code=exited, status=0/SUCCESS)
 Main PID: 1584 (AMBEserver)
   CGroup: /system.slice/system-ambeserver.slice/ambeserver@...
           └─1584 /usr/sbin/AMBEserver -p 2460 -i /dev/ttyUSB0 -s 460800

Mar 24 02:49:03 compass systemd[1]: Started DV3000 Daemon.
Mar 24 02:49:03 compass AMBEserver[1584]: AMBEserver: Starting...
Mar 24 02:49:03 compass AMBEserver[1584]: AMBEserver: Opened serial port /dev/ttyUSB0 at 460800 bps.
Mar 24 02:49:04 compass AMBEserver[1584]: AMBEserver: Initialized AMBE3000R version V120.E100.XXXX.C106.G514.R009.B0010411.C0020208.
Mar 24 02:49:04 compass AMBEserver[1584]: AMBEserver: Listening for connections on UDP port 2460.
pi@compass:~ $ sudo systemctl status ambeserver@...
● ambeserver@... - DV3000 Daemon
   Loaded: loaded (/lib/systemd/system/ambeserver@.service; enabled)
   Active: active (running) since Sat 2018-03-24 02:49:03 CET; 46s ago
  Process: 1581 ExecStartPre=/bin/chmod 0660 /dev/%i (code=exited, status=0/SUCCESS)
  Process: 1578 ExecStartPre=/bin/chgrp dialout /dev/%i (code=exited, status=0/SUCCESS)
 Main PID: 1584 (AMBEserver)
   CGroup: /system.slice/system-ambeserver.slice/ambeserver@...
           └─1584 /usr/sbin/AMBEserver -p 2460 -i /dev/ttyUSB0 -s 460800

Mar 24 02:49:03 compass systemd[1]: Started DV3000 Daemon.
Mar 24 02:49:03 compass AMBEserver[1584]: AMBEserver: Starting...
Mar 24 02:49:03 compass AMBEserver[1584]: AMBEserver: Opened serial port /dev/ttyUSB0 at 460800 bps.
Mar 24 02:49:04 compass AMBEserver[1584]: AMBEserver: Initialized AMBE3000R version V120.E100.XXXX.C106.G514.R009.B0010411.C0020208.
Mar 24 02:49:04 compass AMBEserver[1584]: AMBEserver: Listening for connections on UDP port 2460.
pi@compass:~ $ sudo systemctl stop ambeserver@...
pi@compass:~ $ sudo systemctl status ambeserver@...
● ambeserver@... - DV3000 Daemon
   Loaded: loaded (/lib/systemd/system/ambeserver@.service; enabled)
   Active: failed (Result: exit-code) since Sat 2018-03-24 02:50:02 CET; 42s ago
  Process: 1584 ExecStart=/usr/sbin/AMBEserver -p ${UDP_PORT} -i /dev/%i $AMBESERVER_FLAGS (code=exited, status=1/FAILURE)
  Process: 1581 ExecStartPre=/bin/chmod 0660 /dev/%i (code=exited, status=0/SUCCESS)
  Process: 1578 ExecStartPre=/bin/chgrp dialout /dev/%i (code=exited, status=0/SUCCESS)
 Main PID: 1584 (code=exited, status=1/FAILURE)

Mar 24 02:49:03 compass AMBEserver[1584]: AMBEserver: Starting...
Mar 24 02:49:03 compass AMBEserver[1584]: AMBEserver: Opened serial port /dev/ttyUSB0 at 460800 bps.
Mar 24 02:49:04 compass AMBEserver[1584]: AMBEserver: Initialized AMBE3000R version V120.E100.XXXX.C106.G514.R009.B0010411.C0020208.
Mar 24 02:49:04 compass AMBEserver[1584]: AMBEserver: Listening for connections on UDP port 2460.
Mar 24 02:50:02 compass AMBEserver[1584]: AMBEserver: Couldn't find start byte in serial data
Mar 24 02:50:02 compass AMBEserver[1584]: AMBEserver: processSerial failed to read packet
Mar 24 02:50:02 compass systemd[1]: ambeserver@...: main process exited, code=exited, status=1/FAILURE
Mar 24 02:50:02 compass systemd[1]: Unit ambeserver@... entered failed state.
Mar 24 02:50:02 compass systemd[1]: Triggering OnFailure= dependencies of ambeserver@....
Mar 24 02:50:43 compass systemd[1]: Stopped DV3000 Daemon.
pi@compass:~ $ sudo systemctl start ambeserver@...
pi@compass:~ $ sudo systemctl status ambeserver@...
● ambeserver@... - DV3000 Daemon
   Loaded: loaded (/lib/systemd/system/ambeserver@.service; enabled)
   Active: active (running) since Sat 2018-03-24 02:50:50 CET; 5min ago
  Process: 1637 ExecStartPre=/bin/chmod 0660 /dev/%i (code=exited, status=0/SUCCESS)
  Process: 1634 ExecStartPre=/bin/chgrp dialout /dev/%i (code=exited, status=0/SUCCESS)
 Main PID: 1640 (AMBEserver)
   CGroup: /system.slice/system-ambeserver.slice/ambeserver@...
           └─1640 /usr/sbin/AMBEserver -p 2460 -i /dev/ttyUSB0 -s 460800

Mar 24 02:50:50 compass systemd[1]: Started DV3000 Daemon.
Mar 24 02:50:50 compass AMBEserver[1640]: AMBEserver: Starting...
Mar 24 02:50:50 compass AMBEserver[1640]: AMBEserver: Opened serial port /dev/ttyUSB0 at 460800 bps.
Mar 24 02:50:50 compass AMBEserver[1640]: AMBEserver: Initialized AMBE3000R version V120.E100.XXXX.C106.G514.R009.B0010411.C0020208.
Mar 24 02:50:50 compass AMBEserver[1640]: AMBEserver: Listening for connections on UDP port 2460.
pi@compass:~ $

as you can see that happens everye few minutes and i have to restart the service manualle?

thanks and 73 anton, DO1WA