Архив за 07.02.2019

Troubleshooting Help • Re: RTL-SDR Driver Installation from ZIP files

Not working -D ? ...I'm looking at the exact same build as you right now. There is a -D in the ./rtl_tcp -h.
While in that /build/src directory you need to use the ./rtl_tcp ..... If you just use rtl_tcp without the ./ ....your using a different build rtl_tcp that reside somewhere else like the /bin. There a re a couple commands to try and play with ...
> which rtl_tcp
> whereis rtl_tcp

If you see the -D option and your using ./rtl_tcp ...still not getting direct sample...This only works with the silver Nooelect units v2 and V3 ... I believe...

Statistics: Posted by tim_rtd — Thu Feb 07, 2019 10:54 pm


Troubleshooting Help • Re: RTL-SDR Driver Installation from ZIP files

Thanks Tim. That worked. Not sure why I failed to execute your instructions correctly the first time but I'll pretend it is old age and not a lack of attention to detail.

Thank you again. This has been driving me to distraction. Now all I need to do is figure out why it is not providing the '-D' direct frequency control option as it is supposed to.

Bob Goodwin, N4HCI

Statistics: Posted by N4HCI — Thu Feb 07, 2019 10:47 pm


Transmitting data over radio

I currently have an RTL SDR and plan on getting a transmitter, such as a HackRF for testing only. (I am aware of the legal stuff involved with transmitting). Anyways, I am looking into digital transmission over radio. Does anyone know how one would go about transmitting text data over radio? Would it transmit binary or hexadecimal? How would this exactly work.

submitted by /u/AJelvani
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RTL-SDR Discussion • Re: home use server setup to support RTL-SDR dongle

great clue, with the SFF. Windows can run on it. I'll explore that.
thank you
Pawel

Statistics: Posted by pawelp — Thu Feb 07, 2019 9:11 pm


Troubleshooting Help • Re: RTL-SDR Driver Installation from ZIP files

Nope, look under /build/src

I'll be home in a hour to play...working on someone else's dime at the moment...Didn't look at your attachments yet......

Statistics: Posted by tim_rtd — Thu Feb 07, 2019 8:02 pm


Troubleshooting Help • Re: RTL-SDR Driver Installation from ZIP files

Tim,
Thanks again. You were right. There are some compiled files under the sub-directory of pkg-rtl-sdr/src I have attempted to show you a screen image (below) that is a listing of the files/directories in pkg-rtl-sdr/src and the results of running the './' command option for the 'rtl_test' file (which strangely is named 'rtl_test.c'. The './' option to run the file did not work but the command 'bash rtl_test.c' gave the responses indicated.

Image

Does this suggest a next step to you?

Bob Goodwin, N4HCI
pkg-rtl-src stroke src (compiled files).png

Statistics: Posted by N4HCI — Thu Feb 07, 2019 7:59 pm


Troubleshooting Help • Re: RTL-SDR Driver Installation from ZIP files

Bob, open the src directory that's under the build directory. If someones compiled the build already you'll see the files under /src
If you see rtl_test, try it ..... as ..... ./rtl_test
I usually shy away from these builds....BUT if I had to do something...perhaps delete the build directory and everything under it.

mkdir build again
cmake ../
do the rest of the steps again.....

Hope this helps...
I still suspect you may see an undefined library message after success build.
there may be libraries left over in /usr/lib ....
something like librtsdr.so ....you'll have to remove rtl-sdr again...delete those rtlsdr libs and build a third time.

Statistics: Posted by tim_rtd — Thu Feb 07, 2019 6:59 pm


RTL-SDR Discussion • Monitoring with only One Dongle

Anyone get RTL-SDR dongle it is still possible to monitor trunked conversations using the multiple VCO’s feature of Unitrunker.

Statistics: Posted by cartoon691 — Thu Feb 07, 2019 6:37 pm


Ребята,подкиньте гайд о том,как запустить «свисток» для приёма DVB -Т2 под Linux…


Ребята,подкиньте гайд о том,как запустить "свисток" для приёма DVB -Т2 под Linux ,интересуют программы через которые можно осуществить приём.GQRX на Линукс работает прекрасно .Нагуглил способ через VLC ,но он не прокатил..

ISS will send SSTV (easy for beginners), tommorrow, 8-10 Feb

Starting tomorrow the International Space Station will transmit images. If you have an antenna for NOAA/Meteor M you can use the same antenna. Otherwise you can use a v-dipole.

This event happens something like 5 times a year.

https://ariss-sstv.blogspot.com/2019/02/announcing-arissnota-slow-scan-tv-event.html

submitted by /u/aptitude_moo
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