Just wanted to share this with you all.

Details of how SDR is used  is here

Kicking Data old school

Views: 2119

Comment by Morli on November 10, 2013 at 10:38am

Is there a english ver of the video/audio?  Sure does look interesting but could not understand French audio.Tnx

Comment by Justin on November 10, 2013 at 11:04am

You can select the Subtitles, but the link has the How to.

Comment by Morli on November 10, 2013 at 11:11am

K, tnx. Will try to fig it out. I do love my sdr dongle & planning to in corporate it in GCS  side. .Was hoping to see such usage by others too.  cheers

Comment by Jiro Hattori on November 10, 2013 at 4:04pm

Hi Justin

Looks nice and practical solution. Is there any hardware setup to show your system ?

Actually, there is some schematic in your link.

I am considering to use Raspberry with 5.6GHz wifi network.

BTW, your hexa is also nice. Thanks.

Comment by hamadivo on November 10, 2013 at 4:05pm


impressionnant!  did you use the audio link to send data?

Comment by Martin on November 10, 2013 at 10:20pm

Come on guys, this is justa demo of ancient technology. The data rate way is too low for APM telemetry. Such setup has no practical value.

Comment by Justin on November 11, 2013 at 9:12am

Just an FYI this is not my build. Just wanted to share it with you guys. I think its baud is fast enough you can do Telem on it although it would be 1 way unless you had 2 "radio's" setup.

Comment by Morli on November 11, 2013 at 10:08am

Too slow? May be for RC real time control.  But for down link telemetry , I am sure as AL cheapo  Dongle should do. The beauty of the dongle is it, Rx works from 50Mhz to 1.7 Ghz . I personally use it for watching ADSB and hear audio VHF bands  Unfortunately , we don't have any APRS stations around , so can't test this to decode. Will sure let you guys know after I test it for down stream telemetry (if I can set the Tx side without any encryption).

Justin , two way telem using the dongle is not great idea IMHO as it would mean you have to split a Tx out/separate from pair of cheap telemetry modems that are available every where.  As these are already TRx , so no point as the cost of two SDR dongle would  be  same as cheap telemetry modem . Cheers.

Comment by Gary Mortimer on November 11, 2013 at 10:21am

Does ISS use APRS or is it all a different sort of packet?  I'm also feeding ADSB via a dongle into FlightRadar           http://www.flightradar24.com/-27.13,28.43/7 I think very quickly users here could add stacks of low level data to the service and make a useful amount of low level coverage for detect sense avoid in the future. $20 and an internet connection is all you need. At first I was unconvinced but when I saw my first two light aircraft go by it helped me realise its coming. Sorry little bit of thread creep!

Comment by Stefan Landström on November 11, 2013 at 4:16pm

On my quad I log some Mavlink messages to an 808 #16 camera's audio as AFSK at 1200 bit/s. It may be ancient technology, but that's still plenty enough for my little project even despite my horrific ~25% packet loss... 
Thanks for bringing my attention to that video, it just makes me even more interested in getting some AV rx/tx equipment to play with.


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