Posts by hb9dug

I confirm no success without pilots even on the bench

Offset dish 120cm and Bulleye LNB

Not too close adjacent tx...

Takes sometimes 1 - 2 min to lock

73 de Michel

Hello George,

I have been successful this morning receiving my 8psk sr250 signal on QO-100 with dvbs2-rx. See attached screen dump. At the moment, only by recording the TS and after looking at it with VLC.

72 qro de michel, hb9dug

For those who have not heard of Edouard F4EXB's SDRAngel with its modules for DATV reception and transmission, you will find below the link to a presentation made at the DATV Forum (HAMRADIO 2022) on this topic.

A DATV Transceiver with SDRAngel

Allergic to linux ? A Windows version is available which works very well now that it integrates the LDPC software decoder.

73 de Michel / HB9DUG

Bonjour George,

If you haven't seen it yet, there was a presentation of gr-dvbs2rx by the developer, Igor Freire at GRcon 22.

The presentation can be found on YouTube:

GNU Radio Conference - Monday Sept 26, 2022

https://www.youtube.com/watch?v=1jJWfsGeZvE

start at 58 min.

As a reminder:

the documentation: https://igorauad.github.io/gr-dvbs2rx/

the software: https://github.com/igorauad/gr-dvbs2rx

73 de Michel, HB9DUG

Bonjour Tom,

Thank you for this nice application. Works fine here on a PI3 4Gb.

If you are looking for a feature request for the next version ... I think that a Chat window at the bottom (with an option to display it or not) will be useful making your Windows Longmind client a one-stop shopping for a QO-100 Reception.

73 qro de michel, hb9dug

Hello Baris,

I asked the question regarding the sat file for the following reason :

I use a Bullseye LNB that I don't want to modify. To bring back the QO-100 frequencies in the range of the SF8008 tuner, I use a converter called SUP-2400 (https://home.swissatv.ch/2013/12/lnb-avenger-et-convertisseur-sup-2400/) .

Unfortunately it reverses the frequency...

IN 250-750 MHz OUT 2150-1650 MHz LO 2400 MHz

So your plugin will be the place once working to modify to do the math for me !

73 qro de michel, hb9dug

oh2uds

Does your plugin use a satellite profile ? If Yes which one ?

73 de Michel, HB9DUG

@OE3GBB

Thank you for your post !

I had forgotten that the software (OpenATV 7.1) uses python 3 !

The plugin works without any problem now.

73 de Michel, HB9DUG

Bonjour Baris,

Thank you for your interesting plugin.

I have Open ATV 7.0 on a SF8008 and installed your plugin without problem but I have no success installing the websocket client.

See msg :

root@sf8008:~# opkg install python-websocket-client

Couldn't find anything to satisfy 'python-websocket-client'.

Unknown package 'python-websocket-client'.

* opkg_solver_install: Cannot install package python-websocket-client.

I tried another way by installing pip3 to be able to do after : pip3 install websocket-client... but I was unsuccessful at installing pip3.

Your help will be appreciated.

73 de michel, hb9dug

Bonjour Roberto,

Thanks you for the Patch v.1.6 .

Can I suggest to add in MiniTioune Settings for LNB Volts parameter the 0V setting.

I think that I am not the only one to have an active splitter in front of the MiniTioune that already supplies power to the LNB.

73 qro de michel, hb9dug

Thanks to Evariste and the various contributors to the 2808 version which works like a charm. A wish , Keep It Simple and Stupid (KISS) so we don't end up with a GUI crowded with too many options... Patch.zip is there for these additional options.

Just an example, we have the BATC Spectrum but now we have a button to disable it...

73 qro de michel, hb9dug

Bonjour Roberto,

With the 2408 version, I especially appreciate two functions :

- the spectrum display with the "Click" to set the channel frequency

- the Transverter LO option

As the spectrum display was developed before the Transverter LO, unfortunately the "Click" function doesn't take into account the Transverter LO option if used.

A wish for the next version.

73 qro de michel, hb9dug

Roberto,

Patch works like a charm !

Merci and 73 de michel, hb9dug

OUAH !

Merci Roberto, I will test it today.

The up converter I am using is the BU-500 from Hides.

All the details here :

https://www.oe7forum.at/viewto…f=7&t=284&start=150#p2045

73 qro de michel, hb9dug

Hello Roberto,

I don't see the LO transverter parameter (2208) ... maybe the last mods by Christian F5UII have broken pluto.php...

A nice addition will be a free field to enter the LO to cover the non-standard transverter like mine...

73 qro de michel, hb9dug

I found a very interesting article some time ago on how to configure ffmpeg with NVENC . Look at the answer : Here is a rough guide to tuning the encoder.

The URL : https://superuser.com/question…ngs-for-ffmpeg-with-nvenc

Michel

Hello George,

Good idea to start to play with GNURadio, a fantastic tools for our hobby.

I had a look at your grc flow-graph and I have seen that you are using a TS file from Ron (adv16apsk910.ts) which as been recorded for a transmission for a 16apsk modulation, SR 5000 and a FEC 9/10. With your configuration QPSK, SR 33 and FEC 9/10 you have a TS bit rate available of around 59 Kb/s and you are feeding the DVB-S2 modulator with around 17.83 Mb/s... No chance it will work.

I have made a presentation in 2017 during the DATV Forum at HAMRADIO 2017 of a DATV SDR Experimental TX/RX solution called All-in-one.

All the configuration files are available on the swissATV web site here :

http://home.swissatv.ch/2017/07/all-in-one/

I hope this will help you and I am looking forward seeing you on QO-100 with a TX based on GNURadio !

73 de Michel, hb9dug

Hello Adrian,

You can have a look at a prototype I have done. All the info is on the home.swissatv.ch website here:

http://home.swissatv.ch/2017/07/all-in-one/

73 de michel, hb9dug

For the lucky owners of an Ettus gear, Matt KB1VC has developed a multi-mode VHF/UHF/Microwave radio transceiver that runs on Linux : SoDaRadio

All the details on https://kb1vc.github.io/SoDaRadio/

At my request, Matt has been kind enough to make a version for QO-100.

You will find it on https://github.com/kb1vc/SoDaRadio/tree/SatMode. No kit for this version, you will have to compile it.

Bonne bidouille we say in French.

73 Michel HB9DUG

Quote from G4CDF

Michel,

A zip file containing the GRC file is attached. Please note that you need to install limesdr.

Its quite untidy at present but I am working on a hierarchical version.

Let me know if you have any questions.

73 Mike G4CDF

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Mike,

Merci for the GRC file, i will test it when I return from CJ 2019, the annual gethering of the microwave fan.

73 MIchel HB9DUG