Hi Roger,
I was just following the screen shots in Domenico's original
message, which show message length 6. When I change it to 5 I get DF6NM.
Changing the message length to 6, frequency to 137.522000313 and CRC
to 20 I get IW4DXW.
It would be nice to figure out and fix the start offset issue.
Otherwise we still have to do the math ourselves.
Why or how does the decoder know the message, BER and other details
almost immediately after starting the decode, but decode runs for a
long time after that? I guess I need to figure out how EbNaut works.
73,
Paul N1BUG
On 04/04/2018 12:49 AM, Roger Rehr W3SZ wrote:
> Hi Paul,
>
> I also get the PRQ R decode if I have message length set to 6. But if I
> set message length to 5 as suggested by Domenico, I do get the expected
> DF6NM decoder output. See attached.
>
> I also do not know why the strange time offset...I get the same start
> offset of -195540.05 that you got and have to manually enter the 160.95
> into the decoder. But when I do that, it works :)
>
> You should also get a nice FFT when you click Launch Show_raw_sy. I
> attached an example. If you don't see that then your settings are wrong.
>
> And then setting frequency to 137522.000313 and message length to 6 I
> get IW4DXW decode as well, also attached, as Result2 and FFT2.
>
> 73,
>
> Roger W3SZ
>
> On 4/3/2018 3:47 PM, N1BUG wrote:
>> Here is the problem I am having. Notice the calculated time offset:
>>
>> http://www.n1bug.com/eb1.jpg
>>
>> If I run EbNaut-rx with that I get:
>>
>> http://www.n1bug.com/eb2.jpg
>>
>> If I edit the time in EbNaut-rx to 160.95 s and run it I get this:
>>
>> http://www.n1bug.com/eb3.jpg
>>
>> Is the last decoder output correct?
>> What could be causing the time calculation problem?
>>
>> 73,
>> Paul N1BUG
>>
>>
>>
>> On 04/03/2018 02:09 PM, N1BUG wrote:
>>> OK, thanks Rik and Roger.
>>>
>>> I tried again following Rik's instructions and it installed without
>>> problems. I need to brush up on my Italian. :-)
>>>
>>> So far I cannot get EbNaut-rx to decode anything but I am probably
>>> doing something wrong.
>>>
>>> I'm a bit confused about what I should enter for frequency, since
>>> one screen shot shows 137.520, the other 137.522.
>>>
>>> I am getting a start offset number in the negative thousands of
>>> seconds, not the 160.95 shown in the screen shot.
>>>
>>> 73,
>>> Paul N1BUG
>>>
>>>
>>> On 04/03/2018 11:32 AM, Roger Rehr W3SZ wrote:
>>>> After receiving this email from Paul, out of curiosity I tried to
>>>> install iz7slz EbNaut launchpad here on Windows 10 Pro 64 bit and it
>>>> installed without problems and the GUI comes up OK.
>>>>
>>>> I am not using EbNaut so I did not do further testing of program
>>>> function after the successful installation.
>>>>
>>>> There was one notification during install because the version of
>>>> COMDLG32.OCX that it wanted to install was older than the version on my
>>>> system, and it asked if I wanted to keep the version I had so of course
>>>> I said Yes. I suspect that answering either "Yes" or "No" would have
>>>> been satisfactory.
>>>>
>>>> The notification that I saw is here:
>>>> http://http://w3sz.x10.mx/EbNautInstallError1.PNG
>>>>
>>>> The GUI I see after install, given here for "proof of life", is here:
>>>> http://w3sz.x10.mx/eBNautInstallGUI.PNG
>>>>
>>>> If this didn't install for you then the issue is likely either [1]
>>>> something particular to your system, or [2] a result of needed files not
>>>> being included in the distribution which I happen to have because I use
>>>> my system for development purposes, with the presence of these files on
>>>> my system before attempted installation preventing me from getting the
>>>> install error (and permitting successful installation).
>>>>
>>>> 73,
>>>>
>>>> Roger Rehr
>>>> W3SZ
>>>>
>>>> On 4/3/2018 9:12 AM, N1BUG wrote:
>>>>> I had a few minutes between meetings so I tried it...
>>>>>
>>>>> It will not install in Windows 10 64 bit. There were some error
>>>>> messages in Italian which I did not understand but the installation
>>>>> failed.
>>>>>
>>>>> 73,
>>>>> Paul
>>>>>
>>>>>
>>>>> On 04/03/2018 08:51 AM, N1BUG wrote:
>>>>>> Hello Domenico,
>>>>>>
>>>>>> I am not yet using EbNaut. Seems not any time soon for me. But I am
>>>>>> very interested.
>>>>>>
>>>>>> I want to say thank you for taking the time to develop and share
>>>>>> this application. As I said before, if EbNaut is ever to become a
>>>>>> mainstream mode on LF it must be made easier to use and the hardware
>>>>>> setup easier to understand and build.
>>>>>>
>>>>>> I have no possibility to receive EbNaut over the air but I could
>>>>>> install and test this under Windows 10 with the included sample
>>>>>> file. I will try it when I get a bit of free time, hopefully today.
>>>>>>
>>>>>> Your application is not stupid! It is an important step toward
>>>>>> making EbNaut more user friendly and therefore accessible to more
>>>>>> people!
>>>>>>
>>>>>> 73,
>>>>>> Paul N1BUG
>>>>>>
>>>>>>
>>>>>> On 04/03/2018 08:04 AM, Domenico IZ7SLZ wrote:
>>>>>>> Hello EbNauters,
>>>>>>>
>>>>>>> some time ago i wrote a very stupid application for calculating the
>>>>>>> offsets for a wave file under analisys and launch the Paul
>>>>>>> Nicholson's application *EbNaut-rx.exe* with some field already filled.
>>>>>>>
>>>>>>> Now i have added some further facilities (i know that the
>>>>>>> application remains stupid in respect the great works done by Paul,
>>>>>>> Markus, Wolf !! 😀) .
>>>>>>>
>>>>>>> First of all, EbLaunch can launch DF6NM's FFT application that is
>>>>>>> used to convert the FFT raw text file (coming from the Spectrum Lab
>>>>>>> session) to a wave file prepared for EbNaut-rx.
>>>>>>>
>>>>>>> Just check or fill the correct 'sr.ini' parameters shown on the top
>>>>>>> of the program (see screenshot 1). Then select the .txt file and
>>>>>>> press 'Convert raw FFT...." button . A new .wav file will be
>>>>>>> generated in the same directory.
>>>>>>>
>>>>>>> Then you can select this wave file, fill various fields as symbol
>>>>>>> lenght, no.of characters, polinomian, no. of cores, and time and
>>>>>>> frequency of the transmission to be decoded (see screenshot 2). You
>>>>>>> can press "calculate offsets" button to check the values, then you
>>>>>>> can launch EbNaut-rx with the button.
>>>>>>>
>>>>>>> It works also if you are using a wave file generated directly from
>>>>>>> Spectrum Lab by using EbNaut-recorder function ("Wolf's method").
>>>>>>>
>>>>>>> Before pressing EbNaut-rx RUN button, please check the *CRC *value
>>>>>>> becouse it may differs from the default CRC16 .
>>>>>>>
>>>>>>> After that, you can open the 'squared signal' plot program (tnx
>>>>>>> Markus) just clicking on the button "show_raw_..."
>>>>>>>
>>>>>>> The program EbLaunch is uploaded on my Gdrive
>>>>>>> https://drive.google.com/open?id=1oF6dxXqWlP5Z2mkqQr-CTooCsdHeEu7k
>>>>>>> The setup program does install everythings in one directory
>>>>>>> including EbNaut-rx.exe and DF6NM's utilities. There is also the
>>>>>>> test FFT raw file shown in the pictures.
>>>>>>>
>>>>>>> EbLaunch is written in ancient VB6, i have tested it on Win7: it
>>>>>>> seems working. I ask, whom is interested, to test it and report the
>>>>>>> bugs.
>>>>>>>
>>>>>>> Scope of this program is to help newcomers in the calculations and
>>>>>>> also to help the skilled people (not me : i always make mistakes !)
>>>>>>> to do immediate calculations if in hurry during an EbNaut QSO.
>>>>>>>
>>>>>>> 73, Domenico IZ7SLZ
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