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Re: Cheap RTL.SDR

jdow
 

Both Nooelec and rtlsdr.com V3 dongles are good. (I suspect they are basically the same thing by now.) Both have more stable oscillators in them. And they work like a champ. (I have some early Nooelec dongles and two much more recent rtlsdr.com dongles.) I've had fair luck with other sources. One shipped a tiny dongle that had the tuner chip mounted cocked at an angle. It's only use able without the tuner. I use it for testing SW features that might damage a dongle.

Most of the recent dongles declare 0BDA 2832 and 0BDA 2838 for VID and PID. But there are dongles with different IDs.

Let's first establish what VID/PID you installed with ZADIG. (I hope you got it right and nothing else packed up and seems to have died.)

{^_^}

On 20191224 07:38:17, Ken Underwood wrote:
Thanks Paul mate very helpful
I have down loaded SDR Console V3, problem i have now is identifying the radio i have from the drop down list
Without knowing what it is designed around then a mystery, think i will get one from your suggestion from Amazon, at least there i will have some support
Thanks for the tip.
Have a good Christmas and happy New Year, to you and all the others on here that offered some help.
73
Ken
G3SDW


Re: Beginner test Sdr Console Rtl2832U

jdow
 

You can adjust frequency errors with the ppm adjustment. But for this use it should not be needed unless you are trying to extract information from the Doppler shift, not that I thing real meaningful information extraction is possible given the nifty drifty nature of these dongles. But, they DO show you the potentials for similar more advanced tools.

{^_^}

On 20191224 07:22:33, ceauce@... wrote:
hi everyone,
I’m. Beginner so apologies !
ive not calibrated the rtl2832u.
I tested my setup (inc 5 element yagi 2m) with the Graves Radar at 143.050. but found signal at 143.049.350 including tones and occasional blips that could be meteors?
please see image below, am I on the right track ? Paul
is t


Re: Cheap RTL.SDR

jdow
 

The dongle pictured does not look legitimate to me. It looks like something that was hand painted and contains who knows what. He might pass along the VID and PID that Zadig revealed for the device. I'll check if it is on the list of real rtlsdr dongles supported.

{^_^}

On 20191224 07:20:08, Paul Gulliver wrote:
Well £20 is not ** that ** cheap, I know it's a bit late now but for £18.50 you could have got a NooElec SDR, they have a good reputation, I have bought several NooElec branded items and all have been good.
https://www.amazon.co.uk/NESDR-Mini-Receiver-Compatible-Packages/dp/B00P2UOU72/ref=sr_1_5?crid=J9R1MLD4H1S4&keywords=nooelec+sdr&qid=1577200309&sprefix=noolec%2Caps%2C143&sr=8-5
I appreciate it's not helping you with your present problem.
If you are installing SDR Console perhaps you'll have better luck - just double check the drivers and make sure they are suitable for Windows 10
Paul
On 24/12/2019 at 15:05, Ken Underwood <keng3sdw@... <mailto:keng3sdw@...>> wrote:
No Paul only the UK seller said to search Sharp SDR and to download Zidag
driver.
The one from China, although posted from the UK is exactly the same but had
now instructions at all.
The for £20 what can i expect.
73
Ken G3SDW


Re: Cheap RTL.SDR

Dick
 

Hi Ken,

Have you tried pressing the run button?


73, Dick PA2015

 


Re: Beginner test Sdr Console Rtl2832U

ray roberge
 

The signal looks like the Graves radar, as you suggested. Changing the bandwidth is as easy as clicking on the left, under filter.
You have the 3.2 kHz bandwidth selected (default under USB mode).
The almost vertical lines in some screenshots show a passing target at Mach 6 relative to your location and the Graves transmitter. Graves is a Passive radar in that it transmits a CW tone and by looking at the Doppler from various receiver locations, the target range is determined. To observe local targets, click the CW-U Mode and reduce the filter to 267 Hz for a +/- 500 meters per second,relative, Doppler target observation. 
From your screen shot, it looks like the fluctuations in the carrier are nearby targets. Relative Velocity = Doppler frequency x 3e8 / (observed frequency * 2).

Once you calibrate the receiver ( -12 ppm off? ) you will have a better idea of the correct frequency, and Doppler! This SDR drifts a lot under temperature variations so be suspect of the absolute frequency even after calibration.

Have fun,
Ray WA1CYB


Re: Beginner test Sdr Console Rtl2832U

Alan G4ZFQ
 

Hi Alan, I`ve just found a help file in sdr console to calibrate dongle will try that tomorrow or should I continue with speclab?
Paul,

If you use rmob then I guess any suitable SDR program will work. I presume it is just a matter of piping the audio to rmob. BUT rmob seems to be an old program that may not work in modern Windows. Check this.
Should I be using a 3.2kHz filter in sdr console? it seems to be stuck on ?
Bandwidths are adjustable although long echoes can cover a wide bandwidth.
I'm not experienced, you need more advice or research.

73 Alan G4ZFQ


Re: LimeSDR-USB HF TX

kg7swp@yahoo.com <KG7SWP@...>
 

Happy Holidays.

Ed


do you need any testers simon for the rspdx

ian
 
Edited

hi simon do you need any testers for v3 in console for the rsp dx thanks ian my email is iwolsey@...


Re: Beginner test Sdr Console Rtl2832U

ceauce@...
 





Does anyone know what the strong signal is, or is it the actual Graves radar signal ?


Re: Beginner test Sdr Console Rtl2832U

ceauce@...
 

Hi Alan, I`ve just found a help file in sdr console to calibrate dongle will try that tomorrow or should I continue with speclab?

Should I be using a 3.2kHz filter in sdr console? it seems to be stuck on ?

I hope rmob will work with sdr console so i can record the data.



Re: Beginner test Sdr Console Rtl2832U

Alan G4ZFQ
 

I tested my setup (inc 5 element yagi 2m) with the Graves Radar at 143.050. but found signal at 143.049.350 including tones and occasional blips that could be meteors?
please see image below, am I on the right track ?
Paul,

Yes, as I said in the SpecLab group you need to calibrate the dongle.
You are certainly getting a good signal but getting the RTL to work with SpecLab at the same time makes it a lot more difficult.
Get it calibrated, but I'm not sure how you apply the calibration with SpecLab, best ask there. The figure will be the same.

73 Alan G4ZFQ


Re: Cheap RTL.SDR

Alan G4ZFQ
 

think i will get one from your suggestion from Amazon, at least there i will have some support
Ken,

Fundamentally they are all the same. If you get one working then any other should.
With these cheap dongles basically you have to get your own support. They are not always simple plug and play.
Sometimes you have to dig into Windows to find out what is wrong. A few thoughtd here https://sites.google.com/site/g4zfqradio/test_configure_rtldongle#Faults/%20Support/%20Extras
One thing If after installing the libsub-Win32 driver it does not work try the libusbK driver.
Have you looked at the page for SDR Console? https://www.sdr-radio.com/Radios/RTLDongles
There are a few utilities that test it, someone might guide you there..

73 Alan G4ZFQ


Beginner test Sdr Console Rtl2832U

ceauce@...
 

hi everyone,

I’m. Beginner so apologies !

ive not calibrated the rtl2832u.

I tested my setup (inc 5 element yagi 2m) with the Graves Radar at 143.050. but found signal at 143.049.350 including tones and occasional blips that could be meteors?
please see image below, am I on the right track ? Paul

is t


Re: Cheap RTL.SDR

Paul Gulliver
 

Not sure if this page is any help, it says it's for any sdr dongle  https://www.rtl-sdr.com/rtl-sdr-quick-start-guide/

Paul


On 24/12/2019 at 15:56, Ken Underwood <keng3sdw@...> wrote:
I can see my problem now with SDR Console V3, have no driver, if i could only find which one i need then i think i could get things going
73
Ken


Re: Cheap RTL.SDR

Ken Underwood <keng3sdw@...>
 

I can see my problem now with SDR Console V3, have no driver, if i could only find which one i need then i think i could get things going
73
Ken


Re: Cheap RTL.SDR

Paul Gulliver
 

Ken
If you're think of starting again, another good dongle to look at is the RTL SDR V3 - available from ebay (several suppliers just search for RTL SDR V3 ) and for support for this dongle

I have 3 of theses dongles working 24/7 for several months without problems

Paul


On 24/12/2019 at 15:38, Ken Underwood <keng3sdw@...> wrote:
Thanks Paul mate very helpful

I have down loaded SDR Console V3, problem i have now is identifying the radio i have from the drop down list

Without knowing what it is designed around then a mystery, think i will get one from your suggestion from Amazon, at least there i will have some support

Thanks for the tip.

Have a good Christmas and happy New Year, to you and all the others on here that offered some help.

73
Ken
G3SDW


Re: Cheap RTL.SDR

Ken Underwood <keng3sdw@...>
 

Thanks Paul mate very helpful

I have down loaded SDR Console V3, problem i have now is identifying the radio i have from the drop down list

Without knowing what it is designed around then a mystery, think i will get one from your suggestion from Amazon, at least there i will have some support

Thanks for the tip.

Have a good Christmas and happy New Year, to you and all the others on here that offered some help.

73
Ken
G3SDW


Re: Cheap RTL.SDR

paul newcombe <G6YZC@...>
 

Ken....

what can you expect?

I can tell you that 2 of the top 6m stations here in the USA (1 needs 1 more grid to work all of the USA and the other is the top 6m EME op) use the Nooelec 0.5ppm RTL for their 6m RX.  The one who now needs 1 grid did not even hear his second to last grid on his $$$$ Flex 6700 but worked them on his RTL RX. The other said that SDR Console and the RTL were one of the reasons his last 6m EME DxPerdition was such a success.  Yes they use LNAs and Filters but then all RXs need those.

I will also say that IMO most of the magic is done in SDRC. There is no way a $20 RTL should be better than the Kx or Flex X on RX. It is all in Simon's Magic.

What can you expect? 

Paul N2EME


From: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io> on behalf of Ken Underwood <keng3sdw@...>
Sent: Tuesday, December 24, 2019 10:05 AM
To: main@SDR-Radio.groups.io <main@SDR-Radio.groups.io>
Subject: Re: [SDR-Radio] Cheap RTL.SDR
 
No Paul only the UK seller said to search Sharp SDR and to download Zidag driver.

The one from China, although posted from the UK is exactly the same but had now instructions at all.

The for £20 what can i expect.

73
Ken G3SDW


Re: Cheap RTL.SDR

Paul Gulliver
 

Well £20 is not ** that ** cheap, I know it's a bit late now but for £18.50 you could have got a NooElec SDR, they have a good reputation, I have bought several NooElec branded items and all have been good.


I appreciate it's not helping you with your present problem.

If you are installing SDR Console perhaps you'll have better luck - just double check the drivers and make sure they are suitable for Windows 10

Paul


On 24/12/2019 at 15:05, Ken Underwood <keng3sdw@...> wrote:
No Paul only the UK seller said to search Sharp SDR and to download Zidag driver.

The one from China, although posted from the UK is exactly the same but had now instructions at all.

The for £20 what can i expect.

73
Ken G3SDW


Re: Cheap RTL.SDR

Ken Underwood <keng3sdw@...>
 

No Paul only the UK seller said to search Sharp SDR and to download Zidag driver.

The one from China, although posted from the UK is exactly the same but had now instructions at all.

The for £20 what can i expect.

73
Ken G3SDW

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