Re: LF: EbLaunch - an easy application for managing Window's EbNaut-rx

[Domenico IZ7SLZ <iz7slz.domenico@gmail.com>]

Hello Paul, all

thanks to everybody for testing this little program !

The file 04020316.txt included is a raw FFT coming from my receiver audio and  Spectrum Lab session programmed according Markus's OPDS32 settings. The only difference respect to the OPDS is that we need to keep the .txt files: opds program wants to delete them. So do not run opds for the moment or remove the two instructions row in the file clean.bat.

My Spectrum lab  FFT settings are : Fc=1500 Hz (central audio frequency),  samplerate  48000 samples/s (thanks to the re-sample), decimation is 216 and lenght is 524288. Receiver is setted to dial 136.000 kHz USB.

This file contains at 03:00:00 UTC two EbNaut  transmissions  (DF6NM on 137.520 kHz and IW4DXW on 137.522,000313 kHz)

So, after converting txt file to 04020316.wav, you can try to decode using one of these sets of parameters:

Parameters for DF6NM: 5 characters, 3 seconds, CRC16, 8K19A

Parameters for IW4DXW: 6 characters, 3 seconds, CRC20, 8K19A

There are also some LORAN lines that is possible to trace with the EbNaut decoder having ***** as results.

GL and 73, Domenico IZ7SLZ

On 3 April 2018 at 20:09, N1BUG <paul@n1bug.com> 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
>
>
>

--
Paul
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