Архив за 16.02.2020

RTLSDR device that can also be used to capture video?

I know that historically, video capture devices were discovered to be a cheap way to get a SDR. On amazon they now sell dedicated RTLSDRs pretty cheap. However I am also interested in doing a bulk VHS to tape transfer project. My question is, if I buy a cheap RTLSDR from amazon could I use it to capture video as if it were a video capture card? I can use Mac / Windows or Ubuntu. I'm very familiar with the ubuntu command line so if the solution involves ffmpeg or similar it's not a problem.

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KerberosSDR • Re: Feedback on possible KerberosSDR V2 Hardware

My bad

Just suggested a few features for v3 before finding this thread.

In my defence, we are post v2 so maybe that was OK.

More to follow..

T

Statistics: Posted by Tom_G0JSV — Sun Feb 16, 2020 9:02 pm


KerberosSDR • Re: Connectors

Correction

The USB-3 connections seem to be much more reliable compared to microUSB.

The USB-C connections seem to be much more reliable compared to microUSB.

Statistics: Posted by Tom_G0JSV — Sun Feb 16, 2020 8:51 pm


KerberosSDR • Connectors

Quote.

"BATCH 2 CHANGES: Note that due to too many people having issues finding USB-C supplies that work, batch 2 reverts to microUSB on the power port."

Please, please could the next batch (batch 3) be USB-C & USB-C only. Or do 2 versions in the short term.

The USB-3 connections seem to be much more reliable compared to microUSB.

Also, suggest the antenna connections to be on one panel and power plus the link (to the SBD) on another panel. A couple of LEDs would be nice. One to indicate power supplied (internal white light) and the other to indicate the boards have initialised (internal blue light).

T

Statistics: Posted by Tom_G0JSV — Sun Feb 16, 2020 8:46 pm


Comment on Hacking Iridium Satellites With Iridium Toolkit by Zenon

Linux isn’t so hard. I’m using it from 3 years and don’t remember any command but with tutorials I can achieve objectives. Good luck.

RTL-SDR Discussion • Re: Beginner-Want to listen air traffic

Thank you for this quick reply. I just bought the usb from Aliexpress

c) My roof where I plan to install the antenna is 20meteres away.Is that too far ?

Shouldn't be an issue as long as you have high quality coax cable, and/or an LNA.
reply:Can I also use I high quality antenna/sat cable. Aircom is a bit bulky..

So if you want different airbands you should have multiple antennas and an antenna selector or something similar?

Statistics: Posted by manosspan — Sun Feb 16, 2020 5:33 pm


KerberosSDR • Re: Newbie and first thoughts

Umm! Can't upload the Python script at the moment because the forum is blocking it. I will upload to GitHub in due course.

Below is an image of the code. Not too many lines to type out.

This needs to be copied to the /home/pi/kerberossdr/_webDisplay location.

Call it what ever you want .py

Then run in a terminal window on the RPi. Note python and not python3.

e.g. python ExportToNextion.py

This will output to the content from the /ram/DOA_value.html file to the screen and send the output via the serial for the Nextion.

If anyone wants the .HMI or .TFT files [Nextion files] let me know and I can make these available.

PY_Script.png

Statistics: Posted by Tom_G0JSV — Sun Feb 16, 2020 3:57 pm


KerberosSDR • Re: Newbie and first thoughts

A few more pics showing the full 10 degree pointer in action. The fist 2 pics showing the random noise floor activity. Then pic 3 showing a carrier being detected from a handheld along with the DOA, confidence level & Sig strength. Note that I populate the Bearing value with a rounded DOA.

I suppose I could use the confidence level to hide the random bearings. i.e. If confidence level > 10 show DOA & bearing other wise leave it at 0.

P1_10d.jpg
P2_10d.jpg
P3_10d.jpg

Statistics: Posted by Tom_G0JSV — Sun Feb 16, 2020 2:59 pm


Hi everyone, please help me to overcome error in Software Wxtolmg that, » Keplers are 3408 days out of date for NOAA 17″ ThanksHi everyone, please help me to overcome error in Software Wxtolmg that, » Keplers are 3408 days out of date for NOAA 17″ Thanks

Hi everyone, please help me to overcome error in Software Wxtolmg that, " Keplers are 3408 days out of date for NOAA 17" ThanksHi everyone, please help me to overcome error in Software Wxtolmg that, " Keplers are 3408 days out of date for NOAA 17" Thanks

(Feed generated with FetchRSS)

KerberosSDR • Re: Newbie and first thoughts

Latest Pics. This is all now working. The compass is only using 4 points at the moment 0-90 = 0 degrees, 91-180 = 90 degrees, 181-270 = 180 degrees. I will code the rest of the logic later today to show a finer resolution. I have created 36 images and therefore the compass will show to an accuracy of 10 degrees. I may do a 5 degree version at some point. By using separate images, there is no flicker on the screen.
P1_4P.jpg
P2_4P.jpg

Statistics: Posted by Tom_G0JSV — Sun Feb 16, 2020 10:42 am


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