[Skimmertalk] RedPitaya 125-10 vs 125-14

[Stefan von Baltz, DL1IAO]

Thanks all for your comments, they were helpful!

Summary:
- It is indeed possible to run two instances of CwSkimmerServer on one PC to support two RedPitaya boards at the same time. Adding RTTY may easily run even fast PCs into saturation.
- The RedPitaya 125-10 may be satisfactory for many users depending on antennas and noise at a given QTH. The 125-14 should theoretically offer a better dynamic range.
- One user has reported privately to me regarding a comparison between the 125-10 and 125-14. One test did favour the 125-14 with an SNR advantage of 1-2dB for some spots. Another test revealed no significant difference.
- If either of the RedPitayas can equal the performance of a QS1R in a typical skimmer application is debatable and has not been a topic of my post. However, several users have reported and published that the RedPitaya 125-14 indeed produced a comparable volume and quality of spots in a real life comparison.


73,

Stefan DL1IAO, SA3CWW/SM9A


--
Stefan v. Baltz
DL1IAO at contesting.com
http://www.dl1iao.com

Sent from my iPad


> 23 nov. 2017 kl. 11:54 skrev Stefan von Baltz, DL1IAO <dl1iao at contesting.com>:
> 
> 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
>