RE: [Raspberry_Pi_4-Ham_RADIO] Re: Copy SD cards??
- Gentle men
I love this idea ...now who can load a SD card with the software I need .
I have a Paspberry Pi and a Hackberry pi with the WiFi built in to the card.
I can hang the Hackberry Pi up in the trees outside ..Solar power it with
..right at the antenna and connect threw my WiFi network in my house.
Remotely control it ...
No sound card no video necessary...is every body happy now...can we do this?
who will load a SD card with the Linux OS and the SDR software and server
etc....and sell it to me ?
[mailto:Raspberry_Pi_4-Ham_RADIO@yahoogroups.com] On Behalf Of Robert
Sent: Friday, January 11, 2013 7:33 AM
Subject: Re: [Raspberry_Pi_4-Ham_RADIO] Re: Copy SD cards??
On 1/11/2013 8:46 AM, Jim Thisdale wrote:
> If a version of the SDR software is available for the Pi/linux then
> this should not be all that hard to do, we might even be able to do it
Not to toss a wet blanket on what I too would love to see happen, but the Pi
CPU just doesn't have the processing power to run the DSP code
that's needed for a full SDR application. I'm no DSP guru, but this
comes straight from guys who are. Now you might wonder why this is the
case since the Pi is capable of playing beautiful HD quality video?
The answer is, video utilizes the GPU (Graphics Processing Unit) on the Pi,
which is restricted for other uses by terms of the license agreement to help
keep the price low. I'm hoping that this will change someday, and SDR
developers will invest the time and energy needed to utilize the GPU for SDR
Meanwhile if you search the archives of this list you'll find my posts about
using the Pi as a "Dongle Server" for a $15 DVB-T stick. I'm sitting here
listening to MIDCARS on 40 meters by running SDR# software on this XP PC
which is getting a stream of I/Q samples from my Raspberry Pi "dongle
server" at the other end of the house.
This application, which only requires the Pi to receive samples from the
dongle and re-transmit them at a rate of 1.024 million samples per
secont via ethernet, takes 30% of the Pi CPU. I control it remotely
via ssh and putty.
73, Bob W9RAN
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