Jay Salsburg jsalsburg at
Fri Dec 27 15:16:34 UTC 2013

Use Virtual Audio Cable software to connect Audio from SDR output to VLC
player configured as a Media Network Stream Server.



From: osmocom-sdr-bounces at
[mailto:osmocom-sdr-bounces at] On Behalf Of IZ8MBW Fabio
Sent: Thursday, December 26, 2013 11:21 AM
To: osmocom-sdr at
Subject: Re: Bandwidth


Yes, also with a lower sample rate (1024) the bandwith is too much....

Just to clarify, I use SDR Sharp (SDR#) on a Windows 7 PC (Client side) to
connect on the RTL SDR on the Raspberry Pi (Server side).

If I use my LAN connection no problem at all, but the bandwith is too much
for stream over my Internet Connection (1 Megabit/sec in upload).

Obviously I do not want to stream, for example, Wide FM Broadcasting over
the Internet beacuse the audio bandwith is very high, but I would like to
stream over the Internet the SSB mode (300 Hz to 3400 Hz) where the audio
bandwidth is not so much.


So how Can I limit the maxium bandwith by using (Server side) the rtl_tcp

I'm pretty sure that with a bandwith of about 3 kHz and a sample rate of
1024 1 Megabit of Internet bandwith can be enought....


I use also the Perseus SDR receiver (by Microtelecom) with it's Server
feature (stream over the Internet) and it works very well, my 1 Megabit of
bandwith is enought.




Fabio, IZ8MBW




Da: Cristian Paul Peñaranda Rojas <paul at>
A: IZ8MBW Fabio <iz8mbw at> 
Cc: osmocom-sdr at 
Inviato: Giovedì 26 Dicembre 2013 16:37
Oggetto: Re: Bandwidth


> Hi again.
> I would like to stream the RTL SDR over the Internet. My Internet
connection is 1 Megabit in upload (much less than a LAN connection).
> Is there a way to decrase or cap the bandwith of rtl_tcp?
> In others words: is possible for example limit the audio stream on a
bandwith of 300 Hz to 3400 Hz?
> Thanks.
> Fabio, IZ8MBW


Try a lower sample rate ? (-s)




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