Архив за 19.05.2019

RTL-SDR Discussion • OOK Signal monitoring program

I'm looking for a SDR program that will monitor a frequency and will alert me or record when a specific programmed OOK signal is detected.

Statistics: Posted by a6s5df4 — Sun May 19, 2019 11:08 pm


What can I do with this?

What can I do with this? submitted by /u/UseTwoHams
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Is it possible to listen Ka or Ku bands with Hackrf One ?

Since it's limited to 6Ghz, I think the answer is no,
but perhaps with some external device ?
Are there any SDR available that can do that ?

submitted by /u/vilette
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Troubleshooting Help • Re: pdw decoder stopped listening to vac

When you installed vac.....did you actually go into the app and create a virtual connection to use?
Also that a pretty old sdr# version...my oldest is 1443.....

Statistics: Posted by tim_rtd — Sun May 19, 2019 7:38 pm


RTL-SDR Discussion • Re: AM Mode Not Working Properly On Gqrx+Pi?

Run volks profile.

sudo apt-get install libvolk1-bin
volk_profile

This will absolutely fix....


It is recommended that users also install the libvolk1-bin package and run the volk_profile tool to optimize GNU Radio performance on the specific computer it is being used on.

sudo apt-get install libvolk1-bin
volk_profile
Wait for it to finish, then enjoy the performance boost :-)

Statistics: Posted by tim_rtd — Sun May 19, 2019 7:17 pm


Troubleshooting Help • pdw decoder stopped listening to vac

Hi enthusiasts ,

Hopefully someone can shine a light on the problem i face ,

Pdw pocsag decoder does generate " unable to open audiodevice " , and i can't get it back working .

re-installed pdw
re-installed sdr sharp
re-installed vac , and even tried several versions

to no avail …….


running win10 64 bit , sdr sharp 1.0.0.1172 , vac 4.12 4.06 and all available versions of pdw

the error remains throughout.


What am i doing wrong ??

Statistics: Posted by Jan4 — Sun May 19, 2019 6:36 pm


Total newbie and this is my first recorded signal. Yay! Looks like Amplitude Modulation, anyone know how to demodulate it? (I assume doing this allows to listen the content)

Total newbie and this is my first recorded signal. Yay! Looks like Amplitude Modulation, anyone know how to demodulate it? (I assume doing this allows to listen the content) submitted by /u/albertogarciasocial
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[Maritime radiofax] JMH Tokyo, 13.9885 MHz, Himawari satellite image (RTLSDR to fldigi)

[Maritime radiofax] JMH Tokyo, 13.9885 MHz, Himawari satellite image (RTLSDR to fldigi) submitted by /u/the2belo
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RTL-SDR Discussion • AM Mode Not Working Properly On Gqrx+Pi?

Has anybody had an issue with AM being extremely finicky with the V3 dongle and an installation of Gqrx on a Rasberry Pi? I can successfully use direct sampling, but it is almost as if AM mode gets overloaded, I can hear audio on all the other modes, but AM is usually silence, though it occasionally works. When it DOES work, it seems to kick itself off again when I tune to a strong station. My system is a 3B (not plus) with the latest Rasbian and with the recommended Gqrx install and drivers.
Is there anybody else experiencing this? I don't mind buying an up-convertor if it will fix the problem, but I would love to be able to play around in the meantime.

Statistics: Posted by Spartan — Sun May 19, 2019 5:33 pm


Strange triangle artifacts in WXtoImg

Strange triangle artifacts in WXtoImg

Yesterday i finaly fixed my antenna that had been sitting broken for a while. Reinstalled sdr# and WXtoImg and this is the first image i got.

https://i.redd.it/pyg0izsff5z21.png

This is the first time i have seen somthing like this. The artifacts start off small and it looks like they double in size as the image is recived. It looks like parts of the image are being swaped in this weird pattern. Eventualy they stop as seen in the image above however i found that if i stop and start sdr# very quickly as soon as i notice this it stops it from happening (image below).

https://i.redd.it/85ybt3fng5z21.png

I have not tried using a apt decoder yet so i will do that when another pass comes over and see if the problem persists. I am using a double cross antenna if this helps.

submitted by /u/Lynx_At0Mic
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