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

Colleagues, what amplifier do you suggest for the rtl-sdr tuner

There is something here:
Link

The best amplifier is a good hihihi antenna

I ordered the following:

https://www.google.pl/search?q=SPF5189+RF+Amplifier

I thought to myself - for less than PLN 30 why not try it. According to measurements found in the network, this amplifier's parameters correspond to the officially recommended amplifier for RTL-SDR: LNA4ALL.

Yesterday I made a little comparison. Trying to get noise at the level of -40dB in SDR Sharp I set it without the RF Gain amplifier to 28dB, and with the amplifier to 2.7dB. I received exactly the same frequency converters in the 2m band - the same SNR. At 70 cm there was a slight improvement, of the order of + 1 / + 2 SNR, and I did not try it higher, because I have nothing to open the local converter to 23 cm.

I give up this idea. As you know, the amplifier would have to be installed directly next to the antenna, which would make it a reception-only antenna, and I would have to supply it somehow. All of this is for dubious profit.

neo386 wrote:

The best amplifier is a good hihihi antenna

And you could recommend a "good" antenna that works in the full frequency range (bandwidth is about 860MHz) that can be received with such a tuner: "RTL-SDR - an SDR receiver from a cheap DVB-T tuner on a USB port" .
best regards


Link

In my opinion, GUMISIU is best to buy a Japanese for a "base".



DIAMOND X-6000 - Basic VHF / UHF / 1.2GHz Antenna

https://www.inradio.pl/sklep/producent/2015-0...95573/44/anteny-vhf-uhf/anteny-bazowe-vhf-uhf

The Diamond X-6000 antenna is a base solution for three amateur radio bands. The 2m band in the antenna has an electric wavelength: 2x5 / 8? with a gain of 6.5dB, while the UHF band - 70cm has already 5x5 / 8? and works with a gain of 9dB, while the 23cm-1.2GHz band has a gain of 10dB and consists of 6x5 / 8?. The whole X-6000 weighs 1.8 kg and is windproof up to 50m / s. The full length of the Diamond x6000 antenna is 3m and can operate with powers from 60 to 100W. The antenna is made of two sections that are folded for transport. Simple design for radio amateurs who do not need a long antenna but consider high efficiency in operation.

The X-6000 antenna is a compact type for electrostatic voltages, and made in DJS for easy installation and water resistance.
Technical data of the base antenna DIAMOND X-6000
Band: 144/430/1200 MHz
Gain: 6.5dB (144MHz), 9.0dB (430MHz), 10.0dB (1200MHz)
Max. power: 100/100 / 60W
Length: 3.05m
Weight: 1800g
A: to the wind: 50m / s
Type: 2x5 / 8? / 5x5 / 8? / 6x5 / 8?
Connector: N

If someone prefers to have more profit, I recommend DIAMOND X-7000, but this one is 5m long ?? ......

Added after 34 [minutes]:

endriu2712 wrote:

Colleagues, what amplifier do you suggest for the rtl-sdr tuner

On the short wave range.

@ neo386 and you vouch for the correct reception apart from the resonance of this X6000.?

There have already been complaints about the X300, X510 that they are deaf beyond the dedicated frequencies, so it will be similar here.

But ... I did not have, I did not measure, I only warn you.

#internick

But what is interesting to pick up outside the amateur bands? Everything encrypted after encrypted like GSM? Microwave L band?

No such long antennas! In practice, such an antenna (X-510) mounted on a 10-story block at the end of the VHF band we are interested in (173 MHz) receives worse than if you were standing with a towel and its original short antenna on the ground floor of this block. The attenuation beyond the dedicated range is that high.

The longest antenna of these diamonds is the X-30. On VHF it is half a wave, so satisfactory broadband, and the higher the better, so on UHF it is also not bad - in some countries the 70cm amateur band is 430-450 MHz and at least in such countries this antenna works properly.

http://yonec.pl/elektronika/tabcze/

neo386 wrote:

... But what is interesting to perceive outside the amateur bands? ..

In simple terms: https://www.elektroda.pl/rtvforum/topic1562028.html

I warmly welcome. I have a question, has anyone run a plugin for SDRSharp in which you can upload your spectrum spectrum as shown in the picture?


I mean exactly if anyone tried to make their own spectrum as described on the page below and upload it to the program. I get an error regarding the signal value in "db".


https://github.com/VE3NEA/HeatMapView

I would like to show the modification of my sdr receiver, the receiver is tightly closed in the box (the box is double to make the terminals outside) the receiver is closed in the inner box and it is flooded with paraffin oil, thanks to which the receiver itself is much cooler, the usb outputs have been introduced thanks to the holes in laminate and the antenna cable was led out through a copper tube into which the core of the antenna cable (wire and plastic insulator) was glued.

30cm of cable and nothing

My current version:

Hello colleagues. I set it up in my sdrsharp just like my friend " Arek_v1 "and here is the spectrum of receiving my set.

I would like to add that the gain is set to 0 because I used two external amplifiers, thanks to which I limited the interference caused by the tuner itself and its surroundings. Thanks to this, I did not have to use additional housings and complicated filters. I have described this set a few times here on the forum, it is more effective than the internal amplifier of the tuner. SWA9710 amplifier without the balun directly after the antenna, the second FP6L amplifier minimum 2 meters in front of the tuner, antenna separator with power supply. I have slightly modified the SWA9710 amplifier, description at the link.
https://www.elektroda.pl/rtvforum/topic2353101-1200.html#16956486
Not included antenna made by me from the RG213 cable according to the diagram also posted on the forum. Here it was made for the frequency of 440MHz.
I recommend everyone to play with external amplifiers because in my opinion it is worth it.
Best regards.

Question: someone did UP-Converter on a diode mixer?

After a few years, I bought a dongle with the R820T2 (the one I used before was lost somewhere). The earlier one, after damaging the E4000 in Direct-Sampling mode, was great.
The new one in the same mode is almost as deaf as a trunk. So quickly I did an UP on a diode mixer, and it's better. But it's not like the old one.
And I plan to put everything in a nice aluminum housing, UP converter, antenna switch, amplifier / attenuator, preselector. And now I have a dilemma. To do on the mixer or TA?
Someone tried?

Additionally, in my copy there is an ordinary 28.800 MHz quartz. He swims terribly. Anyone have a bearing on TCXO with this frequency at an affordable price and with good ppm?

I started with direct sampling, then I made a NE612 converter, but without matching transformers. Now I am testing the version on the ADE-1 mixer. I see a significant difference in comparison to the NE612, but still the ADE-1 is fitted to 50? as standard, which I didn't have on the NE612. Could this alone make such a big difference or maybe an ordinary diode mixer is just better?

On the NE612 I had to use a gain (SDR Sharp) of 28dB. There is no need to overclock at all on the ADE-1 - 0dB is enough.



On this simple device I am currently receiving the PR1 at 225kHz with SNR up to 40dB - but I don't know if it's a good benchmark station.
I have an ordinary 80m - 2x19.5m dipole. Besides, I am listening to the 80m band and I perceive most of the Polish amateur stations clean and clear.

In addition, I made a low-pass filter for about 30MHz, but I do not know how much it is needed at all, if I am in a moderately disturbed area (a district of single-family houses a few km from a larger city, no RTV transmitters in the area).

The case cleared up a bit. My antenna was damaged. Now the reception is fairly reasonable.

Sumar wrote:

On this simple device, I am currently receiving the PR1 at 225kHz with SNR down to 40dB

In my case, I perceive them on the verge of audibility, individual words are understandable. But this is the antenna's fault (completely different band).

Sumar wrote:

I have an ordinary 80m - 2x19.5m dipole

Well, unfortunately, I do not have the conditions for such an antenna. Perhaps in days I will make a MiniWhip.

Sumar wrote:

On the NE612 I had to use a gain (SDR Sharp) of 28dB. There is no need to overclock at all on the ADE-1 - 0dB is enough.

Weird. The diode mixer should introduce attenuation, not the other way around.

Hello!
Is it possible to set the SDRSharp program so that after starting it starts to receive the previously saved frequency?

I want to put the program icon in the auto-start, but after starting the program, it still has to be started and set the frequency.

The program itself cannot be set up like this, but there is an Auto Start Radio plugin (attached).
You put it in the SDRSharp directory and add the magic line to the Plugins.xml file



Then you create a shortcut to SDRSharp, put it in the Autostart, and you're done.
The program will start and after about 5 seconds it will start working on the last memorized frequency.

Please. You're welcome. ;)

PS Checked on SDR # v1.0.0.1667.

Hello
Can someone help me run this?
I installed according to this http://ywd.pl/projekty/odbiornik-sdr/
And an error pops up:

I have such a tuner


I think it's about the "Device hint" window, but I tried to enter differently there, for example, the tuner model and nothing helps.

This is the first time I see it.

I do that. Give it a try.

I connect the tuner. Windows tightens its drivers. If there is no Internet connection, I add the drivers from the disc.

I replace the driver with Zadig: http://sq6net.blogspot.com/2014/07/instalacja-rtl2832u-i-sdr-na-windowsie.html

(points 1-6 you let go)

And you have the latest Zadig here: http://zadig.akeo.ie/downloads/zadig-2.4.exe

But it won't do me any good by itself. I have to have this ExtIO RTL.DLL because it is the driver that performs the replacement.
What you provided in the link, nothing works there anymore. Fuck ... it is. I have a driver CD but everything is there but not what you need unless I'm blind and can't find it.

You do too much.
Do what I wrote, i.e. if you have the Internet, he installed it himself and treat it with Zadig.
If not installed, point him to the CD and after he will install Zadig.
And the fact that, for example, in SDR Sharp you can not see it because it is for E4000, these are classic and modified .dll libraries.

I did so and when I ran SDRSharp, it pops up that there are no drivers.

If you replaced the driver correctly with Zadig, it must work.
Download these libraries, extract and paste to the main SDRSharp folder: https://mega.nz/#!KkQGmQIC!PFTCQG7P0tcXinUewmUenf4bGDUkOruWfmcbdPnRjbk

I'm afraid that by reading all these guides and blogs you could have made quite a chaff in the system.

What you entered pops up to be in the wrong format.

I just downloaded, unpacked it, and it works, so there's probably something wrong on your side.

It doesn't work for me. I don't know what is, I'm not an IT specialist.

Hello
In device manager the tuner should be in USB-Bulk-in .. to use sdr-sharp, hdsdr Being sea tuner is in- video audio controller- How is it use property update driver or even uninstall driver, with these options the tuner will move programmatically to USB Bulk-IN ... In WIN XP I did several times until the tuner moved to USB Bulk -In ...

Everything is fine in the manager.
I downloaded the finished package from this tutorial https://www.youtube.com/watch?v=KgzDOKSOhp8&t=283s and everything works fine.