Рубрика «Англоязычные»

Great news! NOAA 15’s scan motor current has dropped significantly over the past few weeks!

Great news! NOAA 15's scan motor current has dropped significantly over the past few weeks! submitted by /u/amdorj
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Comment on New Product: RTL-SDR Blog 1090 MHz ADS-B LNA by moeses

I have a nesdr smart v4 dongle and I don’t believe that it has the bias tee built in. When I doubled checked the specs on amazon it didn’t mention anything about a bias tee which is why I suspect that it doesn’t have one. Also, just to test if it does anything out of the box I plugged it directly into the dongle with no antenna (USB>SDR>LNA>Nothing) and tuned to local FM to see if anything happened. Nothing happened.

The weird thing that maybe someone can explain is that if I lightly press the male pin connector of the SMA to the female connector of the LNA and give it a jiggle then all of a sudden it seems to work for a moment. If I hold the SDR dongle against the LNA just right it almost seems to work exactly like it should. BUT…this doesn’t happen if SMA pin goes into the LNA hole (for a proper connection). Any thoughts on what might be happening?

Trying to figure out a way to get Doppler shift correction on Mac OS

Hello all.

I am attempting to find a combination of programs that will basically correct for Doppler shift from NOAA POES and Meteor Satellites like Orbitron + SDR# does for Windows, but on Mac.

Currently, I’m trying to use GQRX and Gpredict; both programs are running well, except the TCP interface on GQRX is not accepting the corrected frequency from Gpredict (I have checked, Gpredict is sending the corrected frequency upon request in the proper format).

Is there a solution? Or should I instead find other programs? Please do let me know.

submitted by /u/Zecellomaster
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Think I found a way to decode Elektro L satellites

In between November and December 2019, the Russians are going to launch the new Geo Stationary satellite, the Elektro L No3. It’s basically a MeteoSat, but It seems like it won’t be encrypted. For Europeans, these are great news, because the MeteoSat (the European equivalent of GOES) is encrypted, and the prices to access the data are not worth it. The big problem is that there isn’t a lot of information about how to decode this satellite, but, I think I may have found the document that has it all (really). Here it is Link I’ve read it a little and it seems to use the same protocol as the unencrypted MeteoSats from 2006. Also, if you go down to the Spacecraft folder in the link, there are also some Meteor and MetOp documents. PS: I know I sound a bit overexcited

Thanks ~u/Metris06

submitted by /u/Metris06
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RTL-SDR Discussion • Re: RTL.SDR Chinese USB Device

Username wrote:
Thu Aug 22, 2019 12:54 pm
I did run the install-rtlsdr.bat
since the ignore the proxy and dont show any error it will not work.
Download the File Manually and Put it into the Folder.
Ok I got it running I deleted everything and started from scratch. I was able to get AM/FM broadcast. However, if I stop it or try to exit the main program it just hangs up and I have to use the task manager to stop the process. Is there a deliquette way to exit the program so it doesn't hang?


Statistics: Posted by bowler1956 — Fri Aug 23, 2019 1:18 am

RTL-SDR Discussion • Re: Help ID’ing Items Part Two

If you're only listening to HF, chaining the two together is fine.

A 9:1 balun could help with matching the random wire antennas impedance resulting in better reception.

Statistics: Posted by rtlsdrblog — Fri Aug 23, 2019 1:13 am

RTL-SDR Discussion • Re: Bluetooth Classic / LE Sniffing

If you're processing 160 MHz of bandwidth you'll need some serious processing hardware, most likely a custom FPGA solution.

An SDR gives you the raw radio data. You still need to demodulate, and then decode those bluetooth signals. I'm not sure if there's any software for that already created, but there might be something for GNU Radio.

Statistics: Posted by rtlsdrblog — Fri Aug 23, 2019 1:12 am

RTL-SDR Discussion • Re: RTL.SDR Chinese USB Device

Telegraphist wrote:
Thu Aug 22, 2019 9:35 pm
Well I finally got it to recognise the RTL and that was done by changing the USB cable obviously the one that came with the kit was faulty. Anyway I started to play with it and I am actually listening to Radio 2 but I have lost the screen as per the attachment. Can any help me please?????
You've probably moved the graph axes so that the spectrum can't be seen. The controls are usually on the right, but on yours they look like they've somehow been hidden. I'd suggest redownloading a fresh SDR# and starting again.

Statistics: Posted by rtlsdrblog — Fri Aug 23, 2019 1:06 am

RTL-SDR Discussion • Re: RTL.SDR Chinese USB Device

bowler1956 wrote:
Wed Aug 21, 2019 6:43 pm
Not sure if my dongle/kit is Chinese, I bought it from the RTL-SDR.com website RTL-SDR Blog R820T2 RTL2832U 1PPM TCXO SMA Software Defined Radio with Dipole Antenna Kit, just got it today 8/21/19

I have the same error that the person above has (cannot access RTL device )

I did run the install-rtlsdr.bat and followed the startup guide. When I initially set this up everything seemed ok, then I removed the dongle for some reason (most likely to use another USB device)and when I reinserted the dongle in the same USB port that's when I got this error. I did re-run the bat file but that didn't help. When in step 10. loading the driver, I know see the following in both boxes. "WinUSB (v 6.1.7600.16385) RTL2832UUSB) on the left and right sides(see photo)is this normal?

how do I insert an image of the errors?

P.S. My dongle also gets very hot, is this normal?

Is there anyway to uninstall and start again?
Please advise.
If it's one of ours you can contact us directly at admin@rtl-sdr.com as we can provide direct support. Might be faulty, in that case we'll issue a replacement.

Statistics: Posted by rtlsdrblog — Fri Aug 23, 2019 1:04 am

Troubleshooting Help • Re: RTL1090imu.exe will not install

claude2 wrote:
Wed Aug 21, 2019 9:45 pm
Thanks for replying.
As I have been fighting this problem for weeks now and getting not very far, I forget where I downloaded RTL1090imu. I have received information from you tube and tinhat ranch and other places.

I have downloaded dump1090 and am also at loss there as to how and where this program is installed.
I will check the sites you provided and see what I can do with the programs.

i really like to do all of my own work with the computer but RTLSDR is very difficult for me. A lot of the procedures are things that I have never done before and as such are very puzzling.

Thanks for your help and if I get stuck I will send another SOS.

dump1090 and modesdeco2 are command line programs. Modesdeco2 is probably the easiest to work with if you don't have much terminal experience. I believe it comes with a .bat file that can just be run, and some decent text instructions.

Statistics: Posted by rtlsdrblog — Fri Aug 23, 2019 1:01 am

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