[Skimmertalk] RedPitaya 125-10 vs 125-14

[Paul]

Yes as I said before, plenty comparison but no measurement, as long as you are happy and it works in your rf environment that’s good.

73 de Paul GW8IZR



> On 23 Nov 2017, at 14:23, Dave Pascoe <davekm3t at gmail.com> wrote:
> 
> I don't have a 10-bit Red Pitaya but I do have several QS1R's and a Red Pitaya 14-bit SDR. I have compared a many days of results between the QS1R on 80-10m and a Red Pitaya on 80-10m, both fed from the same antenna(s) through a known equal power divider network. These comparisons were also done through a few contests by now. I have found the Red Pitaya to be every bit as good as the QS1R (produces same volume of spots, +/- a very small % variance) and would not hesitate to recommend it as a replacement.
> 
> Whether a 10-bit vs. 14-bit Red Pitaya make sense for a given location, the first thing I would look at is the external noise situation at that QTH. If you are external noise limited then you may not see much of a difference.  :-)
> 
> An i7-class PC can run two instances of CW Skimmer on two separate Red Pitaya SDRs without breaking a sweat. But adding RTTY in there will cause the CPU to be saturated during RTTY contests - but should be OK in non-contest times.
> 
> Hope this helps.
> 
> 73,
> Dave KM3T
> 
> 
>> On Thu, Nov 23, 2017 at 7:08 AM, Paul <gw8izr at gmail.com> wrote:
>> Hello Stefan,
>> 
>> I would also very interested to see noise performance of the Pitaya board, I’m not convinced that this is a receiver intended for crowded bands. Whilst there may be some rudimentary comparison made between the receivers, that hasn’t been suitable in depth measurement (not that I’ve seen anyway)
>> 
>> Personally I don’t see it as being a suitable replacement for QS1r or Perseus etc
>> 
>> 73 de Paul GW8IZR
>> 
>> 
>> 
>> > On 23 Nov 2017, at 10:54, Stefan von Baltz, DL1IAO <dl1iao at contesting.com> wrote:
>> >
>> > Hello all,
>> >
>> > In theory the 125-14 with its 14 bit ADC should be superior to detect weak signals on a busy band due to its higher dynamic range. Has anyone actually compared the two different Pitayas? Which Pitaya are you using? JF2IWL has shown that a 125-10 compares well to a QS1R and S9-C.
>> >
>> > I see that you can run CwSkimmer and RttySkimmer with one Pitaya and one PC. But does anyone run 2 Pitayas on one PC with 2 instances of CwSkimmer or even 2 instances each of CwSkimmer and RttySkimmer? This would require a powerful PC, though.
>> >
>> > Thanks in advance!
>> >
>> > 73,
>> >
>> > Stefan DL1IAO, SA3CWW/SM9A
>> >
>> >
>> > --
>> > Stefan v. Baltz
>> > DL1IAO at contesting.com
>> > http://www.dl1iao.com
>> >
>> > Sent from my iPhone
>> >
>> > _______________________________________________
>> > Skimmertalk mailing list
>> > Skimmertalk at contesting.com
>> > http://dayton.contesting.com/mailman/listinfo/skimmertalk
>> _______________________________________________
>> Skimmertalk mailing list
>> Skimmertalk at contesting.com
>> http://dayton.contesting.com/mailman/listinfo/skimmertalk
>