[App_rpt-users] AMBE question

ronald simpson n6gkj1 at gmail.com
Fri Oct 30 00:37:49 UTC 2015


I have a considerable investment into Fusion. I will support this effort in
any way I can. I ordered one of the dongles that does Fusion, Dstar and
DMR. I saw the YouTube video of the demonstration about this dongle in the
Fusion mode.

I see alot of potential here in this group

Ron
N6GKJ
On Oct 29, 2015 6:47 AM, "Steve N4IRS" <szingman at msgstor.com> wrote:

> When we did the DMR to AllStar testing, we used the NW Digital Radio
> DV3000. It was mounted on a RPi2 running asterisk.
> The DV3000 uses AMBE-3000 vocoder chip from DVSI. We tested with Mototrbo
> and D-Star. Did not have a Fusion or P25 radios.
>
> 73, Steve N4IRS
>
> On 10/29/2015 8:03 AM, David McGough wrote:
>
>> Guys,
>>
>> I haven't looked carefully as to which variants of AMBE are in use by
>> D-STAR, Fusion, etc...Doesn't the original AMBE patent expire fairly soon?
>>
>> The reason I'm asking is that I know there are some fledgling open-source
>> AMBE implementations out there.  A couple years ago I hacked CODEC2 into
>> Asterisk for experimentation, thinking about directly linking to HF via
>> the FreeDV project--and, not wanting to transcode from one low-bandwidth
>> CODEC to another, making truly awful audio!
>>
>> After playing with it a few weeks, I didn't do much more...(I've still
>> got that code and it still works, if anyone wants to play with it?)
>>
>> ...Just wondering.
>>
>> 73, David KB4FXC
>>
>>
>> On Thu, 29 Oct 2015, Matthew Pitts wrote:
>>
>> Mike,
>>>
>>> You are correct in the statement that the DV4mini needs additional
>>>
>> hardware to handle the transcoding from a digital radio. Once I get my
>> nodes back up on my Raspberry Pi, I will work on an updated version of
>> the D-STAR channel driver that supports DMR and Fusion AMBE encoding and
>> decoding as well as radio control functionality for the DV4mini.
>>
>>> Matthew Pitts
>>> N8OHU
>>>
>>> On October 28, 2015 6:18:34 PM EDT, Mike Zingman <mike.zingman at gmail.com>
>>> wrote:
>>>
>>>> Actually the DV4Mini alone does not help tie Allstar into Wires-X.  In
>>>> order to do that one must:
>>>>
>>>> 1) Have an interface to the YSF network protocol
>>>> 2) Decode and extract the AMBE frames from the streamed protocol
>>>> 3) Transcode the frames to PCM at the proper sample rate using the DVSI
>>>> AMBE3000 chipset
>>>> 4) Send those frames to something like the already created USRP channel
>>>> driver
>>>>
>>>> In reverse, 4, 3, 2, 1 to send data back to the YSF network.  In
>>>> addition
>>>> to the simple outline above, you would want to
>>>> a) Add audio filtering/shaping to make the AMBE audio more acceptable
>>>> to
>>>> what we are used to on Allstar (one of the single greatest aspects of
>>>> Allstar is the audio quality)
>>>> b) Transfer of as much metadata between the networks as possible
>>>>
>>>> The DV4Mini is a radio module + digital modulator (DStar/DMR/YSF).  It
>>>> has
>>>> no AMBE encode/decode hardware so there is no way to transcode the
>>>> audio
>>>> content.  For that a "ThumbDV" or a DV3000 would be the hardware of
>>>> choice.  The DV4Mini could be used as a user radio on an existing RF
>>>> network, but one would still need the AMBE3K to do the transcode.
>>>>
>>>> Mike
>>>>
>>>>
>>>> On Wed, Oct 28, 2015 at 5:48 PM, Neil k8it <k8it at cac.net> wrote:
>>>>
>>>> I have been waiting a bit before I start playing with DIAL on a RPI2.
>>>>> I still have two questions
>>>>> 1. Does the RPI2 DIAL  version solve the tx echo buffer issue that
>>>>>
>>>> the
>>>>
>>>>> current version of Asterisk RPI2 code has. The fix to this issue
>>>>>
>>>> seems to
>>>>
>>>>> be taking a long time.
>>>>> 2. Some users have reorted that a lot of modules have been disabled,
>>>>>
>>>> such
>>>>
>>>>> as the Echolink channel driver and others.
>>>>> 3. With the new Mini-DV4  dongle $125  and the amount of capability,
>>>>>
>>>> has
>>>>
>>>>> anybody wrote a channel driver to tie the Yaesu Fusion Wires-X
>>>>>
>>>> network into
>>>>
>>>>> DIAL. It appears that most of the documentation is out there, we just
>>>>>
>>>> need
>>>>
>>>>> someone to write the channel driver
>>>>>
>>>>>
>>>>> Thanks
>>>>> 73 Neil Sablatzky  K8IT
>>>>> Allstar Node 41838 KITLINK
>>>>> Allstar Node 42087 KITLINK HUB
>>>>> IRLP Node exp0068
>>>>> Echolink K8IT-L
>>>>> WIRES-X K8IT 11479 Room 21479
>>>>>
>>>>> *From:* Steve N4IRS <szingman at msgstor.com>
>>>>> *Sent:* Tuesday, October 27, 2015 10:35 AM
>>>>> *To:* N7MTC . <n7mtc at outlook.com> ; app_rpt-users at ohnosec.org
>>>>> *Subject:* Re: [App_rpt-users] Procedure for loading DIAL on a R-Pi2
>>>>>
>>>> or a
>>>>
>>>>> PC
>>>>>
>>>>> Mac,
>>>>> The RPi2 install is pretty much download the image, burn it to SD
>>>>>
>>>> card,.
>>>>
>>>>> Once the Pi boots, you can login on the HDMI / USB console, or SSH
>>>>>
>>>> into
>>>>
>>>>> the board on port 222.
>>>>> The board is setup for DHCP so check your DHCP (router) server for
>>>>>
>>>> address.
>>>>
>>>>> If you want, you can login via the built in serial port at 115,200
>>>>> System will walk you through setup.
>>>>>
>>>>> FAQ for DIAL is at:
>>>>> <http://docs.allstarlink.org/drupal/node/170>
>>>>> <http://docs.allstarlink.org/drupal/node/170%3E>
>>>>>
>>>>> 73, Steve N4IRS
>>>>>
>>>>>
>>>>> On 10/27/2015 10:20 AM, N7MTC . wrote:
>>>>>
>>>>> Is there a procedure for loading the "new" DIAL version of asterisk
>>>>>
>>>> for
>>>>
>>>>> Raspberry pi2?
>>>>>
>>>>>
>>>>>
>>>>> I am looking to connect either a Pi2 or an intel NUC to a Yaesu Dr-1x
>>>>> using the Arcom RC-210 and  the Arcom ADR.  I noticed DIAL has
>>>>>
>>>> replaced
>>>>
>>>>> ACID as the latest flavor of asterisk for both PC and PI2.  I have
>>>>>
>>>> not
>>>>
>>>>> found any install write-ups or YouTubes showing a DIAL install.
>>>>>
>>>>>
>>>>>
>>>>> Regardless of which platform I will need to use an USB to Serial
>>>>>
>>>> adapter
>>>>
>>>>> to connect the ALLSTAR node to the repeater controller.  It will be
>>>>>
>>>> of
>>>>
>>>>> the FTDI chipset either a trendnet Tu-s9 or a GearMo USB RS-232.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> /73
>>>>>
>>>>> Mac, N7MTC
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Benjamin Franklin - "Those who surrender freedom for security will
>>>>>
>>>> not
>>>>
>>>>> have, nor do they deserve, either one."
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
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