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#81
News:
rtl-sdr package has been updated using latest gist snapshot and pushed to extras-devel.
multimon-ng has been packaged and pushed to extras devel too.
 

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#82
Thanks for RTL-SDR, multimon, and rtl_fm on the repos, I am having big fun with these.
Can we wait with hope for gqrx which depends on libs from gnuradio? Some of us are still not great at symlinking even 12 years ofter having to learn it for the old linux Zaurus PDAs which also had a too small root partition.
For those not paying attention these apps turn your N900 into a receiver with more capacity than several Kilo$ receivers and only require a $10 DVB-T receiver, a USB host cable, and Xes's magic. A wire antenna and for HF bands an upconverter do help.

Has anyone played with connecting a satellite LNB/dish to their SDR receiver for free to air? I think we could do the mpeg-2 decode with our phones.

Last edited by biketool; 2014-06-19 at 18:39.
 

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#83
I have been thinking what cool stuff like Van-Eck phreaking is now possible with the rtl-sdr running on our N900s?
Just imagine walking into an office or embassy and dumping or just recording the output of all nearby video cards.
If I were to remove the IrDa receiver, big USB jack, and antenna connector the smallest DVB-T dongles are really thin and might be stuffed under battery cover(Mugen?) or even the system board and connect a wire antenna with a single data pin connector from a serial cable kit.
I will have to figure out the best way to make RTL-FM a system audio device so it can interact more easily with more apps.

Xes when you are compiling stuff and sticking them on the repos can you throw WSJT weak signal processing into the mix? WSJT makes it possible to use the Earths moon as a comm sat with under 100 watts of power for very low rate data among other tricks it can be used for. The more awesome you bring the more awesome we want!

Last edited by biketool; 2014-06-20 at 05:45.
 

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#84
I have had trouble building dump1090 for ubuntu which turns your laptop or phone into an ADS-B aircraft radar receiver. These receivers are expensive, see here http://www.sportys.com/PilotShop/product/17165
It would be pretty cool to see the N900 finally come out with an affordable ADS-B solution for poor pilots. Makes me wish there were a Maemo5 tablet to get a larger view area since I am pretty sure we can get dump1090 working, maybe with bluetooth tethering and VNC.
http://www.hamradioscience.com/the-r...sdr-and-ads-b/
 

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#85
@biketool
there are a lot of things queued in my mind and dump1090 is one of those. In the same queue there is also gnuradio, rtl_433, kalibrate-rtl and gqrx but i remember very well all the problems i had last time i built some of them... and so i have to fit them well in my "nightly multitasking process scheduler"....

I hope that some of this tools (for example multimon-ng) could be used to decode the audio captured by the N900 microphone while in front of a radio receiver to "attract" more public to this kind of nice toys.
In fact multimon-ng can decode a stream piped from stdin and fldigi can record directly from portaudio. Who wants to test them?
 
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#86
Here is a promising looking upconverter and preamp which makes the HF bands available, just tune your freq+50Mhz and everything works as it contains a normal Realtech DVB-T dongle. Everything a radio geek could want in a tiny package but transmit for $50 + $10 shipping..
http://zao.jp/radio/soft66rtl/
 
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#87
Can something be crammed in this ? http://talk.maemo.org/showthread.php?t=93325
 
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#88
Originally Posted by nokiabot View Post
Can something be crammed in this ? http://talk.maemo.org/showthread.php?t=93325
Yes, you could place RTL dongle (without plastic case) into extended battery compartment (mugen cover or endsormeans' awesome elk-extender) and connect it to internal USB and Vbus under battery

/j
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#89
Just saw this post about compiling dump1090 aircraft radar and WSJT ultra weak signal radio data(moon bounce) among others for the Rasberry Pi, should be a similar process since they are both ARM. WSJT will be cool to decode signals from RTL-FM.
http://g4vxe.blogspot.co.il/2013/01/...wspr-wsjt.html

This would also be interesting, an app to minitor multiple AM airband stations, I have to schlep a big airband radio to monitor to the tower, how much better would it be to listen to my phone with intergrated audio and ability to take calls on the same bluetooth headset.
http://www.rtl-sdr.com/monitoring-mu...l-sdr-airband/

I think I will 3D print a SDR sleeve to fit the small dongle with a microUSB port on one side and an antenna port on the other. I also received my antenna port adapters, I chopped one and soldered a wire antenna cut for air band.

This is all very useful as I am currently not working and living off of student loans for retraining and licensing. Leveraging OSS software and cheap tech like this lets me use my minimal budget for more appropriate stuff like food.

Last edited by biketool; 2014-07-01 at 07:17.
 

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#90
Take my money! I want one!
 
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