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Re: [IRCA] SDR
Hi Kaz,
A very detailed performance comparison between the SDR-IQ and Perseus was
made by Marco Bruno IK1ODO last year. His article "Digital Down Conversion
Receivers Compared" was published in the March 2008 edition of RadCom
magazine. It focuses on the hardware side of the receiver and strong signal
handling performance. You can download the PDF here:
http://www.ssb.de/amateur/pdf/radcom_mar08.pdf
Here are some key figures from Bruno's measurements:
Blocking dynamic range, 2.4kHz BW: Perseus = 120db; SDR-IQ = 108db
Calculated IP3 intermodulation distortion: Perseus = 33dBm (dither on,
preamp off); SDR-IQ = 14dBm (max gain)
IMD3 dynamic range: Perseus = 102dB (dither on, preamp off); SDR-IQ = 90dB
(max gain)
73,
Guy Atkins
Puyallup, WA
www.perseus-sdr.blogspot.com
> Message: 4
> Date: Sat, 16 May 2009 09:35:03 -0500
> From: "Neil Kazaross" <neilkaz@xxxxxxxxxxxxx>
> To: "Mailing list for the International Radio Club of America"
> <irca@xxxxxxxxxxxxxxxx>
> Subject: Re: [IRCA] SDR
> Message-ID: <002601c9d633$805881d0$3200a8c0@BIGYAM>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Craig, I believe it was Bruce Conti who said his SDR was also significantly
> better than the R8B for audio recovery from splits. That alone (since I
> need
> real good selectivity here for TA and the continuing TP quest) should
> convince me to get one.
>
> Anyhow, the question here is whether anyone has done a side by side
> comparison of the RFSpace SDR's vs the Perseus for very difficult signal
> recovery situations... ie pulling that weak split out of the mess.
>
> 73 KAZ
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