[Skimmertalk] Pre-amp for Red Pitaya?

[Dai NAGAKURA]

On Mon, 5 Jun 2017 18:51:58 -0400
Nathaniel Frissell <nafrissell at gmail.com> wrote:

> Hi again,
> 
> For some more context, we are working on writing-up a how-to document for setting up a multiband skimmer for hamsci.org <http://hamsci.org/>. You can see the how-to here: http://hamsci.org/rbn-howto <http://hamsci.org/rbn-howto>.

Pse add

" Confrim Intermodulation by HPSDR 
and controle front end gain of Red Pitaya "

In My comparison of three SDRs
http://59925.org/misc/SkimServ_SDR_comparison/

Capture ability on CW SkimServ is S9C>Red Pitaya>QS1R
S9C needs NOT preamp.
and even 10bit Pred Pitaya is good enough for SkimServ if handled
propery.

Dai JF2IWL






> 
> We are currently running 2 red pitaya-based skimmers at Jenny Jump in Hope, NJ (http://hamsci.org/article/new-rbn-receivers-new-jersey <http://hamsci.org/article/new-rbn-receivers-new-jersey>). K2MFF-2 is connected to an DXE ARAV3-1P, and K2MFF-3 is connected to a DXE RF-PRO-1B. They are skimming identical bands, but k2mff-2 does much better than k2mff-3. We are not using preamps.
> 
> Please let me know if you have suggestions for the how-to document. I really appreciate it!
> 
> 73,
> Nathaniel W2NAF
> 
> 
> > On Jun 5, 2017, at 4:32 PM, Nathaniel Frissell <frissell at vt.edu> wrote:
> > 
> > Hi, everyone.
> > 
> > Does anyone have experience using a pre-amp with a Red Pitaya?  If so, what do you use? Would this one from DXE be a good choice? https://www.dxengineering.com/parts/dxe-rpa-1 <https://www.dxengineering.com/parts/dxe-rpa-1>
> > 
> > Thanks and 73,
> > Nathaniel W2NAF
> 
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-- 
Dai NAGAKURA <ndai at cameo.plala.or.jp>

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Dai NAGAKURA <ndai at cameo.plala.or.jp>