Re: LF: The return of EbNaut for Dummies

[DK7FC <selberdenken@posteo.de>]

Hi Luis,

Congrats to your success.
We're looking forward to your messages.

Try to apply that 100 mW to your antenna. It is not unlikely that it can be decoded in DL!
For example, try http://abelian.org/ebnaut/calc.php?sndb=0&snbws=0.022&snmps=&code=16K21&sp=2&crc=16&nc=3&submit=Calculate

73, Stefan



Am 13.09.2018 15:12, schrieb VIGILANT Luis Fernández:

Hi Stefan, Markus, EbNaut

Confirmed Markus. After changing the FFT export files setting to "Complex (real+imaginary)"

it decodes perfectly :-)

I have learn a lot this days. Will be updating some help files I'm preparing to help my memory

and others on this issue. Thanks again Markus and Stefan

Yes. Next step will be to transmit a message with the proper antenna. But may be still without

Mosfet. Will be interesting to check what can I do with 100mW and EbNaut. With 30W I got

many Opera32 decodes at Markus grabber

73 de Luis

EA5DOM

---

De: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] en nombre de DK7FC [selberdenken@posteo.de]
Enviado: jueves, 13 de septiembre de 2018 13:19
Para: rsgb_lf_group@blacksheep.org
Asunto: Re: LF: The return of EbNaut for Dummies

Hi Luis,

Time to connect a MOSFET to the MOSFET-driver!

73, Stefan

PS: Don't forget the LPF :-)

Am 13.09.2018 13:03, schrieb VIGILANT Luis Fernández:

Hi Stefan

 

The FFT lenght is 32768 and the exported FFT bins are 16384. Anyway the .usr file is attached

 

The  signal is almost 20dB over noise at 5mHz bandwidth. Clearly visible and I can also see the sidebands in other (faster) instance

when modulating phase at 0.1 s rate. The power is very small. Just what I can get from a MIC4452 mosfet driver at 12V and

the Tx antenna is just a 5cm piece of wire. The Rx antenna at about 15m away in the roof

 

Transmitting from my QTH with the big antenna and same power produces a similar S/N

But then we add the posibility of a timing offset to the puzzle L

 

73 de Luis

EA5DOM