After a lot of tests, I managed to demodulate with RTLSDR even in sr66 but in qpsk, no tests yet in apsk for lack of TX on Oscar 100, it would be good to find the sensitivity of the old version, great software
f4fdw
Hi Laurenti I also tried the new version on the 16apsk mode very difficult to encode with the RTLSDR key only 8psk fast encoding for the moment no one in tx 16apsk are still waiting, at this point there is no one who wants to do tests
hi Tony
Yes not many people to test dvbs gui but waiting for it will come, the software works well if we adapt the correct bandwidth
73 f4fdw Laurent
Hello Everybody,
The Software works amazing for me.
Its really nice what a great bit of work is invested in the possibility to receive DATV for everybody.
Really thank you to Marcel.
When i make some tests, i have two ideas to make it better.
-the possibility to make carrier recovery activated when software starts
-when i receive a signal and the transmission is paused, the SR have to been changed again to the same SR before.
Thanks for your great work,
Dominik DL1DJH
I can't understand why there is no constellation. The generic RTL 2832 U OEM works great in the narrow band. Can anyone help me to understand where it is error ?
I can't understand why there is no constellation. The generic RTL 2832 U OEM works great in the narrow band. Can anyone help me to understand where it is error ?
Good morning,
Maybe the reason is that the bb-gain is to low. Try to play with values at bb-gain and fft-intensity to a point that the contrast between noise and signal is best. You have to see noise as btiht blue and signal as bright yellow.
Now you can chose the signal with SR that works.
73 de DL1DJH
Thank you, unfortunately I have not solved the problem. In the first photo the BB gain is 50%, in the second photo the BB gain is 100%.
Have you switched the RX polarization ?
Yes, I changed the polarization, the only variation was change gain of the lnb. I think that the problem depends on the sdr receiver not suitable for datv.
no problem here with an even older RTL-SDR Stick.
Many thanks DB8TF. I saw that my sync confidence is colored red and it is 0.
there is just something that doesn't work well in my system. Patience and goodbye to datv
Hello. At 739,500 MHz. can see the signals of the narrow band. At 741,500 MHz. (where there is datv beacon) there is nothing.
At 739,500 MHz. can see the signals of the narrow band. At 741,500 MHz. (where there is datv beacon) there is nothing.
Yes, this is ok if you do not switch from Vertikal to Horizontal polarisation ....
Your Problem is maybe that your polarisation is vertikal, not horizontal. Then you have much attenuation to the signal. Or your dish is a little bit to little.
Thanks for the advice, I have already tried with horizontal and also vertical polarization. In the narrow band with gain 0.0 dB the beacon signal is S 8. With automatic gain the signal is S 9 + 35
Send me a Email to (Callsign)@darc.de. Maybe i can help you via TeamViewer.
73 de DL1DJH
I have already tried with horizontal and also vertical polarization.
Did the narrowband level change if you switch to horizontal ?
yes, the maximum level is with horizontal polarization. By changing the vertical polarization the level decreases a lot. Now the cw beacon in the narrow band is like in photo S 9 + 10
