87 replies to this topic

[littlesat]

Maybe someone can make an ipk (3rd party) plugin of it...-or- are there also sources available via github or so?

[WanWizard]

Changed the topic title to better reflect the discussion...

[littlesat]

With only the plugin you aren’t there what are the correct drivers?

Edited by littlesat, 25 March 2019 - 10:10.

[serdeliuk]

Hello,

 

My plugin does not works yet, it display only an interface but does not do anything, somebody should connect the plugin with libraries or at least with rtl_fm/aplay

 

However, provided "libraries" archive contain all required apps and drivers which allow command line interface to listen on all frequencies available on the RTL-SDR dongle.

 

best regards

 

Marc

[Pr2]

Hi,

 

You should have a look at this plugin:

 

https://github.com/satdreamgr/SDGRadio

 

Done by Athoik it is already fully functional.

 

Pr2

[serdeliuk]

Thanks Pr2,

 

I have built @ATHOIK's SDGRadio and created an archive with all required ipk files to run the radio, didn't had time to test the radio, but i suppose should work.

I have uploaded the archive here http://ms.serdit.ro/sdgradio.tar.gz for those who wants to give a try. All ipk are built under OpenPLi 6.2 env.

 

Best regards,

 

 

Marc

[Trial]

Hi,

thank you Marc. I just ordered nooelec stick to play around with:-)

 

Ralf

[serdeliuk]

You're welcome @Trial, actually @ATHOIK is the one which should be thanked he did the hard work.

If you have no experience with RTL-SDR devices you should try GQRX for your computer as well, it has a nice "waterfall" and it is easy to install and use http://gqrx.dk/download

 

Best regards,

 

 

Marc

[Trial]

Hi,

thank you all:-)

 

I already read a bit what is possible. Tracking airplanes, DAB and so on. Sounds fascinating.

 

Ralf

[serdeliuk]

Yeah, amazing devices, even ISS has a "free/unencrypted" channel, there are some weather satellites which send realtime data, all taxi and/or CB stations, you can try to decrypt TETRA stations , or cell phones communications.

 

There exists few devices which are able to transmit signals too as https://greatscottga.../yardstickone/ 

 

Good luck,

 

 

M

[Matrix10]

My interest goes in the direction of DAB/+ with E2 (VU+) box but with the use of standard DVB-T drivers

They work much more stable than RTL-SDR drivers.

 

Is it possible to make a DAB plugin that would use these standard DVB-T drivers ?

Namely, additional SDR drivers are very buggy and unstable,load a lot of CPU power.

[littlesat]

With standard dvb-t drivers this is not possible...

[Matrix10]

With standard dvb-t drivers this is not possible...

 

I'd like to know a little more.

Why is not possible.

How much i understand the tuner can receive frequencies in the DAB frequency range.

What I mean is missing a decoder part

or I do not understand it ?

All in all

nobody has done anything for a good DAB for satellite receivers

with this or some other way.I believe it should be possible ??

 

DAB, which is now possible, is heavy to the processor even for new 4K boxes.

On the weakest Android DAB works great

Edited by Matrix10, 31 March 2019 - 16:42.

[Trial]

Hi,

How much i understand the tuner can receive frequencies in the DAB frequency range.

a quick search showed my DVB-T >400MHz and DAB around 200MHz.

 

ciao

[serdeliuk]

Hello Matrix10,

 

The RTL stands for RTL CHIPSET, which can be RTL2832U or R820T both built by Rafael Micro.

 

The SDR term stands for "Software Defined Radio" which mean that the demodulation is done by software instead of hardware.

 

The RTL chip which support SDR has a bug discovered by a hardware hacker which allow to capture the raw I/Q data signal from RF receiver before reach the hardware demodulator. Because of this the "unmodified" drivers does not work for SDR, only the special crafted ones can be used, and because it is a software demodulation will load the CPU in some circumstances.

 

Hope that this explain some of the RTL-SDR devices. I think there is a wiki somewhere with more detailed infos.

 

Best regards,

 

 

Marc

[athoik]

If the OFDM demodulation could be done on the hardware, in order to receive ETI would be much better.

The feeds received via satellite in ETI format work even on old mips receivers (since only ETI demultiplexing occurs), because the OFDM is the CPU killer.


Would be nice to receive just ETI stream from onboard tuner, but that's not DVB, so just forget it.

[Matrix10]

Hello Matrix10,

 

The RTL stands for RTL CHIPSET, which can be RTL2832U or R820T both built by Rafael Micro.

 

The SDR term stands for "Software Defined Radio" which mean that the demodulation is done by software instead of hardware.

 

The RTL chip which support SDR has a bug discovered by a hardware hacker which allow to capture the raw I/Q data signal from RF receiver before reach the hardware demodulator. Because of this the "unmodified" drivers does not work for SDR, only the special crafted ones can be used, and because it is a software demodulation will load the CPU in some circumstances.

 

Hope that this explain some of the RTL-SDR devices. I think there is a wiki somewhere with more detailed infos.

 

Best regards,

 

 

Marc

 

I use RTL-SDR/ t2 for a long time

both on a PC and on Android

At all frequencies, including the lowest with HF converter.An excellent piece of hobby.Fantastic PC software.Even Android.

So I know very well the possibilities.

 

I always wonder why no one has done something similar for E2, at least for DAB

except you and @athoik.

The system works, but the disadvantages already described.

 

Too bad

because we have nothing similar for DAB and it would be interesting

because DAB / + is now widespread in Europe.

Edited by Matrix10, 31 March 2019 - 19:11.

[serdeliuk]

Nice Matrix10, how those low filters converters perform? Do you have antennas too for all of them? I only like to fool-around with hardware and software and I am not too good at radio-receiving/broadcasting

[jpuigs]

Changed the topic title to better reflect the discussion…

 

Can you correct it ?  

It's not DBA+ , it's DAB+

[serdeliuk]

Hahaha, i didn't noticed ))