RTL-SDR - an SDR receiver from a cheap DVB-T tuner on a USB connector

Another diagram of an L-band antenna (INMARSAT) has appeared in the network, this time a professional antenna, as the author wrote, it is a document used only for educational purposes and only for hobbyists. Any commercial use is prohibited. Commercial use may be restricted by the intellectual property rights of third parties in your country.

https://uhf-satcom.com/storage/misc/Omnidirectional_Inmarsat.pdf

I recommend testing antennas for this band as well as sharing your observations.

Moderated By c2h5oh:

I remind you that the topic is: " RTL-SDR - an SDR receiver from a cheap DVB-T tuner on a USB connector ".
About antennas you can create your own new topic.

I started a new topic called "SDR Tuner - Acquiring Satellite Signals. Antennas and Software."
Feel free to discuss.

Hello colleagues. I have a question whether sdr scharp will work on windows 10 and possibly you can ask for a link to download the latest program because I have not been in the topic for several years and my laptop with the 7 broke and I no longer have sdr. Regards!

https://airspy.com/?ddownload=3130

best regards

Thanks, and would you have drivers for the blue 820T2 under win10 64bit and do you also need to have a Zading ?. Regards!

It was enough to type in google: zading sdr and it came out ====== >>> https://zadig.akeo.ie/
I guess these drivers need to be installed .... Try it!

I use GQRX on Linux and connect to USB there and wio!

For the tuner to work, at the beginning you need to install the original drivers for the RTL system, then use the zadig program and replace the file. The drivers are attached.

Thanks for your help. I'll try, maybe it will work. Regards!

Hello.Sdrscharper works and sdrscharp not! Please help! Regards!

You need to add the rtlsdr.dll tuner file to the sdrsharp directory. Then you select the tuner support in the program and it should work. You can copy it from the sdrsharper directory.

You are great. It works! Regards!

Information for those who use HDSDR. A new Beta version has been released, I invite you to test it.
http://www.hdsdr.de/download/HDSDR280b13_install.exe

don_viking wrote:

A new Beta version has been released, I invite you to test it

To be honest, I do not like HDSDR because of its graphics, although I use it with RSHFIQ (own design) https://www.kickstarter.com/projects/hobbypcb...hfiq-5w-software-defined-radio-sdr-tranceiver. I downloaded this beta, and I am pleasantly surprised by the quality of reception on RTL (direct sampling). A photo from a moment ago;


30m LW antenna at a height of about 5m directly to the RTL (separated by a broadband transformer to the Q RTL input). Compared to SDRSharp, much less noise, but also a lower sound level.

Hello. How to change the outputs to Dmr

Added after 2 [hours] 15 [minutes]:

I cannot change the settings so that the input is on a virtual cable and the output is speakers. Please help

pawinow wrote:

Hello. How to change the outputs to Dmr

Added after 2 [hours] 15 [minutes]:

I cannot change the settings so that the input is on a virtual cable and the output is speakers. Please help

You need to set the VAC input as main in the recording options in the PC card settings.
Read my instructions.
https://www.elektroda.pl/rtvforum/topic3182271.html

Gentlemen, the question - I put rtl-sdr on lubuntu 18 and run rtl_tcp on it - on the desktop in sdr # I set the server and after connection there are all the cuts. The sound shreds.
CPU utilization on the server 8%, RAM 20% - LAN connection.

I also tried on raspberry - same, chopping sound.
In addition, the sensitivity of the receiver is worse on both, it collects poorly even the local FM radio.
After connecting directly to the USB client computer, everything is OK.

Has anyone experienced something like this?

Hello, I have a problem with Sdr console V3.
How do I set the mouse to scroll a range? In Sdrsharp, I was able to grab with the left mouse button and move it right or left. Here I only see two buttons on the bottom left and right. It's less convenient.
Second question: in Sdrsharp I was able to set the bandwidth in NFM to 32kHz, in Sdr console V3 only 16kHz, which makes NOAA reception pointless. In WFM I have a wider band, but the signal is much weaker. Can you somehow set in NFM at least these 32 kHz?

pawinow wrote:

Hello. How to change the outputs to Dmr

Added after 2 [hours] 15 [minutes]:

I cannot change the settings so that the input is on a virtual cable and the output is speakers. Please help

Hello. Is this channel scrambled or something is wrong?

Looking at the frequency, rather yes.
But you are not picturing speech here, but a frame, so it's just a guess. Wait for someone to talk. And you will see in the Event window.
Besides, you have a lot of mistakes.
What's your antenna?

antyvlad wrote:

Hello, I have a problem with Sdr console V3.
How do I set the mouse to scroll a range? In Sdrsharp, I was able to grab with the left mouse button and move it right or left. Here I only see two buttons on the bottom left and right. It's less convenient.
Second question: in Sdrsharp I was able to set the bandwidth in NFM to 32kHz, in Sdr console V3 only 16kHz, which makes NOAA reception pointless. In WFM I have a wider band, but the signal is much weaker. Can you somehow set in NFM at least these 32 kHz?

As for the step settings in SDR Console V3, you click Tools, then option, tining and step as in the picture. You set a step for each modulation. Then, while holding the mouse pointer on the spectrum, you spin the mouse wheel.


As for bandwidth setting, you can manually set the appropriate bandwidth. You click on the left side of the program below the modulation window in the filter window on the three dots. The filter window opens and you can add a new width or edit an existing one and save it as the next one. I suggest using WFM to decode all digital modulations due to the wide bandwidth and the lack of additional filters that cut the top or bottom of the band.

don_viking wrote:

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Thank you for your response. Unfortunately, the highest value I can set there is 16kHz

antyvlad wrote:

don_viking wrote:

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Thank you for your response. Unfortunately, the highest value I can set there is 16kHz

That's why I recommend using WFM and I guarantee you that this modulation will be the best.




Apart from the topic, there is a new version of SDRSharper v 1.1
https://www.qsl.net/sdr/SDRSharper_11.zip


Has anyone tested the new program " Openear "? Links below. I have a problem with my decoded voice breaking.
Openear



Description

Dear Colleagues, could the treatment of a blue dongle armed with a 2m / 70cm double-strand dipole with Baofeng from a distance of 2 meters damage it? PTT button on for 2 seconds at power L (1W). Gain in donglu set to about 8dB. What worried me ... initially the Squelch had to be set around 70, now 15 is enough ....

The squelch setting level depends on the width of the NFM or WFM filter. The narrower the filter set, the larger the squelch must be to cut the sound out. Did you play with the width of the modulation filter? For example, from 8000 to 10000 it will already do the job and the squelch will catch with less value.

Hello, I have this blue rtl sdr tuner and I want to replace it with something better what do you recommend?

don_viking wrote:

The squelch setting level depends on the width of the NFM or WFM filter. The narrower the filter set, the larger the squelch must be to cut the sound out. Did you play with the width of the modulation filter? For example, from 8000 to 10000 it will already do the job and the squelch will catch with less value.

Thanks Don_Viking. It helped and the squelch "returned" to its place. :D

endriu2712 wrote:

Hello, I have this blue rtl sdr tuner and I want to replace it with something better what do you recommend?

And what are you missing from this tuner or what does not suit you?

I would like to increase the range because with this antenna, what I have is poor, maybe you can recommend an amplifier or another antenna
I have one located on the roof

On the right you can see something even higher. It's hard to judge how much higher. Make a mast there, e.g. 2m, and hang the Radmor
32812/1. And before you buy, move that dipole over there. Now you are deaf towards that wall.

this photo is only illustrative, in fact I have this type of dipole above the roof of the house but to the nearest town 15 km and that's why I ask

Hi,
I have a Not Only TV LV5TDLX dongle. It is on the RTL2832u and E4000 chip.

I connect the dongle, the computer (win 10) sees it in the device manager. I download the package from SDRsharp, everything installs neatly, installs the driver using zzadig. The program sends a message saying that the installation was successful.

And here comes the stairs ...
I turn on SDRSharp and quickly select the Source: Rtl-SRD ((USB) settings and click PLAY, even something goes to listen, but after a few seconds the dingle disconnects and you can no longer see it in the manager. If I do not turn on the SDRSharp program, the computer can see it all the time, only when you turn it on, do such things happen.

Tried disabling power saver on usb.
I checked on my second computer, also from 10 wines, the same thing happens.

Do you have any ideas what could be wrong?