[SMCARA] Software Defined Radio

[Daniel Metcalf]

Cal,

Thanks for getting back to me. My thoughts were that I am going to try
and drive the sdr board with a raspberry pi. I have the wolfson audio
card
(http://www.element14.com/community/community/raspberry-pi/raspberry-pi-accessories/wolfson_pi)
which I think would be capable to handle the processing required. There
is also code available to switch the signal processing to the GPU which
increases the performance by about 10 times.

I am going to work the power circuitry this evening while I await the
solder paste to get here. I found a technique I want to try for the
surface mount chip as found here:
(https://www.youtube.com/watch?v=VE3L96XQsa8)

73s,
Dan



On Mon, 2014-12-01 at 19:57 -0500, n3cal . wrote:
> Dan,
> 
> 
> I have built 2 Ensemble II SDR receiver kits from five dash.com which
> is just the receiver side.   I'd be more than happy to help you with
> your kit and answer any qestions you may have. I can also help with
> any of the Surface mount parts you may need to solder.  I also have
> one available if you would like to play around with it.  Just be aware
> you need a good computer soun card in order for these rigs to work
> well.  I have a inductance/capatitance meter available when you get
> around to winding the coils.  It helps quite a bit.    
> 
> 
> 73
> 
> 
> Cal/ N3CAL
> 
> 
> On Mon, Dec 1, 2014 at 2:19 PM, <jbr13 at md.metrocast.net> wrote:
>         
>         
>                  BODY { font-family:Arial, Helvetica,
>         sans-serif;font-size:12px; }
>          Dan, I think Wes N3WZU may have one that he was playing with
>         a
>         little while back. I would check with him.
>                 N3YUG Jason
>                 On Mon 12/01/14 12:45 PM , Daniel Metcalf
>         kb3uun at gmail.com sent:
>          Good Afternoon All,
>          I have gotten my hands on a kit called the ENSEMBLE TXRX
>          (http://www.wb5rvz.org/ensemble_rxtx/) [1] which is a 1 watt
>         Software
>          Defined Radio transceiver that can be purchased here
>         
>         (http://fivedash.com/index.php?main_page=product_info&cPath=1&products_id=7)
>         [2] for under $100.00.
>          It appears that one of the key components of this particular
>         system
>         is
>          the Silicon Labs si570 programmable oscillator which drives
>         the
>         RX/TX
>          mixers. This kit is not a beginners kit as the builder has to
>         wind
>         all
>          of the coils by hand. This could take a little time.
>          The question I have is has anyone played with one of these
>         systems
>          before? If so what are your thoughts about the RX and TX
>         quality?
>          Dan - KB3UUN
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