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

This effect with the signal fading above 1550Mhz may be related to the settings in the dll files. I had a similar effect on FC0013 tuners when it comes to 1090Mhz reception. In the SDRSharp program, the tuner sometimes hung up and did not receive the signal even on 2 FP6L amplifiers, and in the RTL1090Beta3 program on the antenna and one amplifier, I received planes within a radius of up to 200 km. There was only one mike, you had to turn on and off RTLAGC and TUNERAGC, if you didn't, the reception was poor up to about 30km. It looked like that the tuner had to wake up to receive something. As for the satellites, news is broadcast at 1537.100Mhz. I also noticed such a thing that when I turn the antenna around its axis, the signal changes, sometimes it is stronger and sometimes weaker. The signal becomes very strong from almost unreadable. Or do you have a tuner on the E4000 chip? Maybe he would check if he receives a signal there, it should work up to 2200Mhz. I wanted to buy one if it only perceived something, because I heard that it has weaker sensitivity. I am using the FP6L amplifier again for receiving the L band. You could post a photo of your amp or name it, maybe it would be better than my FP6L. I used to read about a 2400Mhz tuner for surveillance cameras, then I saw a video on Youtube of someone boasting about a set of tuners and there was one, I was looking for something similar on the net but I can't find it. Maybe someone has information on such equipment. There are also a lot of interesting sat signals and more.

The tuner on the E4000 may have a brother today, if he finds him in a pile.
FC0013 supposedly has a separate input for L-BAND - I don't care about EzCap, if I find a datasheet for this FC, I'll try something with it.
I will put a photo of the amplifier later, it is not FP6L.
The best for L-BAND reception was the amplifier with an active GPS antenna with the filter removed.
For the reception above the work of the tuner, you might be tempted to build a downconverter.

I was also thinking about this type of antenna on a PCB. Perhaps it would do better than those helical spirals.
https://www.youtube.com/watch?v=zuyHpx1tnWI

Has anyone managed to simply run DVB-T normally on RTL2832U + R820T2? Like this one http://www.ebay.com/itm/181700078725?_trksid=...353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

I have a directional antenna on which I normally catch the TV and through the TV and through another USB tuner on the IT9135, on which it receives everything beautifully, while this newest addition sees nothing.

I installed the drivers from the board and .NET Framework 1.1 as in the manual and silence in BlazeTV, TotalMedia and VLC. I tested on Win 8.1 x64, Win 7 x32 and Win10 x32 to no avail. Original drivers included. Does anyone know something that I do not know, or maybe I have a damaged tuner (the control LED is blue).

PS On the radiant antenna from the RTL2832U + R820T2 kit, IT9135 sees all 3 MUXes that it does not notice on its own telescopic. Distance from the transmitter 40 KM.

Without any problem, from WIN XP SP3 to WIN 8.1 x86 WIN 8.1 x64 I do not have and tested.

SDR works?

Today I started playing with SDR, so I need to learn a few more things for sure. I do not have, nor do I know yet, what antennas and amplifiers to buy, so I tested everything on a regular Yagi TV antenna.

I installed the SDR according to the instructions:

http://www.rtl-sdr.com/rtl-sdr-quick-start-guide/
http://www.wykop.pl/ramka/1341289/rtlsdr-czyli-odbieraj-niemal-wszystko-z-tunera-dvb-t/

1. Well, the FM radio works after installing SDR and replacing Zadig's drivers with Win 8.1 x64, but even on another USB port the tuner is not recognized in Device manager> Sound, video and game controllers> Realtek 2832U (even after clicking on View> show hidden devices and installing drivers from the disc on a new port). TV of course ni huhu.

2. The TV runs on Win 8 x32 in a virtual machine, and the drivers from the disc were installed there without any problems. They are marked as 86.1.801.2012.

3. On the second laptop also with Wn 8.1 x64 a bit strange situation. The tuner was installed twice in the same port as the same device, twice appearing in the list Device manager> Sound, video and game controllers> Realtek 2832U with the fact that the disconnected device had the driver version 86.1.801.2012, and as connected 64.1.304.2009 (on this control VLC was throwing an error about inappropriate device for TV operation). Attempting to update the driver from the device manager to the drivers on the disc ended with a message that the latest headsets are already available. In the end I uninstalled everything and intoned once more as one device, and I already have this new driver 86.1.801.2012 but there is no TV and no FM. It follows that it would be appropriate to replace the Win 8 x32 drivers 86.1.801.2012, but the question is how if it is impossible to do with MU.

4. Although everything is written beautifully on the tuner chip RTL2832U + R820T2 and as it is supposed to be what I saw earlier on the forums, SDR detects it as R820T (what in the screenshot) without the desired two.

5. Anyone can deal with the TV on Win 8.1 x64? Maybe someone has a different Realtek installation package than the one I threw in the previous post?




Any suggestions? Of course, I'll give you a little more idea.

I will only answer 4 and 5.
Ad4. It will be so and you have nothing to worry about because your deal is what you should have.
Ad5.
Change the x64 driver version in the .inf file to something higher than the one installed in the system, invented of course and install via MU.

By the way, this topic is about SDR from a DVB-T tuner and not about problems with DVB-T reception.

Does anyone receive LRRP, ARS, TMS transmissions? If so, I would ask you to record samples.

lysy1980 wrote:

However, when it comes to L-band reception, I made a helical (not very carefully) about 85cm long and using a LNA bought in a supermarket for the frequency of LNB SA I received INMARSAT on the frequency 1539, xxx and decoded the frames with the program that you uploaded a few posts earlier. Although nothing appeared in the terminal window, the program generally decoded the data.

Try to rotate the antenna around the radiator axis. I had the best reception when the radiator started to the left horizontally, and the worst to the right horizontally when looking at the antenna from the back.

I grabbed the E4000, played for a while and unfortunately compared to the R820T2 using the same antenna and the LNA is blunt.

When it comes to using the offset antenna, I thought about it too and in my free time I will try to play.

It's a shame to bother tuners on the E4000 and it's better to look for a converter or do it yourself.

For some time I have been struggling with DSD + decoding, sometimes something will decode there, but the voice is as if someone was talking in the water such a gurgle that I can only sometimes recognize whether it is male or female
Virtual cable installed, in SDR I have the following settings:
Bandwidth 10000, Order 500, Filter audio unchecked.
I tried on different computers under XP 7, 8 Whist everywhere the same
The signal is clean, clear, in the window from DSD + no errors, the signal levels have already tried different settings.
I tested DSD plus different versions of 1P074 1.051
SDR # V1.0.0.1331
I don't know, maybe a very strong signal is needed, or maybe I'm still making a mistake

I don't use this type of tuner, but ... are you 100% sure that the transmission goes without a key? It may distort if the signal is weak, but look for italicized text in the Event window and:
a) Alg = EP, KeyID = ... extended masking
b) line ends with time and slot ... basic masking

Alg = EP, KeyID = 120, Slot = 1
I think I have to fight the antenna

Don't fight ... EP is a symbol of Enhaced Privacy. Motorola uses a 40 bit key, i.e. 10 characters consisting of the symbols 0-9 and AF. In this case, 120 is the key ID. In order to hear conversations, you need to enter a value that cannot be determined by any decoder.

So DSD will not decode anything with us ...........

If it is italic and there is no Alg = ... then the masking is basic. Then you buy, for example, a Motorola or Hytera and go with each ID from 255 to 1 until you hit it.

There are also unmasked transmissions. Keep trying.

Americans have an unofficial primary key decoder, but say they are forbidden by law to go public as this is already a security breach. Here you have a screen from Alg = BP: http://forums.radioreference.com/voice-contro...nnel-decoding-software/295152-dsd-status.html

Then, having the ID of the primary key (there is no value here anymore) you save the data on the radio and listen normally.

Serwis1 wrote:

So DSD will not decode anything with us ...........

Easy to decode, in Lublin I listened to conversations without any extensions, SDR # with DSD VBCABLE or VAC plugin was enough. A friend helped me don_viking sending a ready DSD package.

You can decode this way, but only those non-encrypted transmissions. The encrypted ones are not possible. Then the program says "ENC GROUP CALL". And just for curiosity, the DSD1.7 also decodes the D-STAR modulation and you can listen to hams.

lysy1980 wrote:

Easy to decode, in Lublin I listened to conversations without any extensions, SDR # with DSD VBCABLE or VAC plugin was enough. A friend helped me don_viking sending a ready DSD package.

Anything more buddy? At LBN, I only catch analog calls. In truth, I caught a DSD, but I failed to listen to it. Will a friend share a package?

For the package, please write to don_viking However, to listen to the sanitary transport, look for around 168-169MHz, there are several relays working all the time. For the first time I was able to listen to something with some old DSD, probably 1.6 and using SDR RADIO PRO + VBCABLE.

Lubelskie warms up to half of Poland. One day UKE will take care of it. Strange you don't answer 168.8750; 168, 9375, etc. Podlaskie also thundered so much that Belarus became interested. Now they have 1W on the paper. And the problem with establishing communication

lysy1980 wrote:

For the package, please write to don_viking However, to listen to the sanitary transport, look for around 168-169MHz, there are several relays working all the time.

Exactly, I could easily catch the characteristic digital sound there, but the decoding was unsuccessful. A bit higher, like this 170 -180 is also a bit interesting, in analogy

Just because you can hear the DMR does not mean there is a voice broadcast. Often these are just data. It is best to set it on one frequency for half a day and then you will be able to receive something.

Hear. I have Not Only TV LV5T Deluxe.
At the moment I have a 60 cm piece of rod connected to the window on the windowsill. I only receive the CB band when someone outside the window broadcasts me, at least I heard something twice. Something is catching around 145 Mhz as the local ham is produced. Besides, silence in the air.

When it comes to CB reception, does it make sense to do something like a car CB antenna with a magnet outside the window on a windowsill at the height of the first floor? Will that make any difference to the wire I currently have?

An antenna that is in resonance at a given frequency and is impedance-matched to the cable and receiver will always be much more effective than a random short wire outside a window. I suspect that the problem of poor reception lies with the sum of all factors. Factors include: short and untuned antenna, low antenna, antenna placed on a windowsill close to the building wall, possible faulty connections causing short circuits or significant signal attenuation.

Dongiel can be blown off by ESD, it has happened.
One of the symptoms is the low sensitivity if it works at all.

To receive the CB band on the low floor, I recommend a magnetic loop antenna that is easy to make on your own.
It will have incomparably better efficiency even than a shop antenna on the windowsill.

But remember one basic rule when working with these LV5TDLX tuners. Never make a short circuit between ground and antenna input. Therefore, I recommend connecting the antennas regardless of whether they are short-circuited or not through a suitable separator. I burned three tuners twice by a short circuit at the plug and once connected the antenna with a short circuit. I have been using separators since then, and I advise others to do the same.

I collected input with ground many times. I gave the voltage to the input several times (I powered the antenna without a separator) by falling off the protective diode. The tuner works to this day.

Ok, maybe you did, but maybe you are talking about other tuners, unless you soldered this diode yourself. It just so happens that these tuners do not have such a diode in the original version on the FC0013 and FC0012 chips. The diode was only installed in these tuners with the E4000 chip. I know this because some of these NotOnlyTv LV5TDLX tuners from different years have passed through my hands. If you do not have a diode, you burn the tuner and it can only be used as a KF scanner because the RTL2830 system remains intact, and it is used as a short wave receiver. I posted my pics of this tuner in the original.

I have this tuner. The output was short-circuited many times (whether it was with the diode or after it was burnt), the whole thing works without any problems, I have whole band listening.