[SMCARA] RADXA and SDR ordered so let the experiments begin.

Fri May 1 08:56:02 EDT 2015

Dan,

This really sounds cool!  Keep good notes and write an article for QST, QEX, or CQ.  Might as well be famous!

73 Tom/OKW

-----Original Message-----
From: SMCARA [mailto:smcara-bounces at mailman.qth.net] On Behalf Of Daniel Metcalf
Sent: Friday, May 01, 2015 8:20 AM
To: smcara at mailman.qth.net
Subject: [SMCARA] RADXA and SDR ordered so let the experiments begin.

So as planned I just placed the order for the following SDR Receiver:
100KHz-1.7GHz Full Band UV RTL-SDR USB Tuner Receiver/R820T+8232 Ham Radio 01
http://www.amazon.com/gp/product/B00PIBZ76I/ref=od_aui_detailpages00?ie=UTF8&psc=1

and two of these single board computers:

Radxa Rock Pro RK3188 Quad-core 1.6 GHz 2G RAM 8G Flash open source Single-board Computer Supported Linux, Android, FreeBSD

http://www.amazon.com/gp/product/B00KTHXDNK/ref=od_aui_detailpages00?ie=UTF8&psc=1

The experiment is to see if any of the single board computers I currently own or am about to receive (I still have a few Beagle Bone Blacks, a Raspberry Pi B and tomorrow I will have two of these Radxa
Pro(s)) will decode the SDR's signals in a reasonable amount of time and efficiently. Efficiently being defined as not using more then 50% of the processor's capability and not more than half of the system's ram. 

My hypothesis is that the single core processor boards are going to choke in that they may decode the signals and I might hear some audio but I expect the processor is going to be be pegged at close to or at 100% utilization.

I do have mush higher hopes for the Radxa boards.

Now the question I have for the group is what SDR software do I use being all systems are Linux. Any ideas other the GnuRadio? I expect to run several software packages for comparison hoping that one package may be more efficient than another and I was already planning to start with GnuRadio.

73,
Dan -- KB3UUN

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