[Skimmertalk] Suggesting for SDR Receiver to use - for 1 SDR multi Band "skims"

Timothy H Seed tim at sy-edm.com
Sat Jul 9 09:25:47 EDT 2016

Excellent Info Pete !!

I am a Linux OpenStack developer :)  - Off to Google now… in-between running in the IARU contest

Many thanks

> On 9 Jul 2016, at 16:14, Pete Smith N4ZR <n4zr at contesting.com> wrote:
> Tim, there are a number of options.  For a number of years the "standard" receiver used on the Reverse Beacon Network has been the QS1R by Software Research Laboratory.  It has the ability to receive up to 7X192 KHz bands simultaneously.  SRL announced plans to sell a more capable and less expensive second-generation QS1R beginning this summer, but its proprietor, N8VB, is not answering e-mails and a couple of promised deadlines have now passed.  I know he has had some health problems, and hope they have not recurred.
> One new option is a device called Red Pitaya (Google it).  It was originally intended to be used as a multi-purpose test instrument, but software has been written to interface it with Skimmer Server, and it can cover 6 x 192 KHz.  Its price is only about a third that of the original QS1R, but it requires a bit more computer savvy to get going, because it runs Linux itself, and then talks to your computer through a network connection.
> There are several other units offering multiple band coverage, but I have not tested them in this mode and can't comment.  The very lowest-cost option is to use a bandswitching SDR such as the Softrock Ensemble II, and step it through the bands using SkimScan SR.  You will only get about 50 percent as many spots that way, though.
> Note that you will need Skimmer Server, not CW Skimmer, for the first two options.  They are offered by VE3NEA as part of the same software package.  RTTY Skimmer Server is a separate package.  He offers a 30-day full-featured trial.
> I hope this helps.
> 73, Pete N4ZR
> Download the new N1MM Logger+ at 
> <http://N1MM.hamdocs.com> <http://n1mm.hamdocs.com/>. Check 
> out the Reverse Beacon Network at 
> <http://reversebeacon.net> <http://reversebeacon.net/>, now 
> spotting RTTY activity worldwide. 
> For spots, please use your favorite 
> "retail" DX cluster.
> On 7/9/2016 12:50 AM, a45wg wrote:
>> Firstly I have searched the archives - but I can not find an answer to this question. If there is already some information regarding this - I would appreciate the URL.
>> I would like to be able to run an SDR and use the I/Q output to feed cw-skimmer - But I would like to look at 2,3 maybe 4 bands at the same time i.e. 10,15,20,40 when a contest is on. I could simply buy 4 SDR receivers - but that does seems rather expensive and overkill - I equally could construct 4 Soft-Rock receivers (which may be an option).
>> I have seen some SDR receivers are able to run multiple “Virtual SDR” allocations out of their spectrum. 
>> What suggestions does the list have in accomplishing this ?
>> Many thanks for the bandwidth
>> 	73s de
>> 		Tim A45WG
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