[Skimmertalk] [RBN-OPS] Red Pitaya Hears but Skimserv doesn't spot

[Bob Wilson, N6TV]

So the Aggregator sees no spots from the Red Pitaya, or you see no spots on
the RBN?  It's very easy to accidentally check the box "Do not sends spots
to RBN".  Worth checking all settings in Aggregator and sharing screen shot
of "Skimmer traffic" tab, which tells much about what is going on.

Also, using CWSL_Tee and HDSDR makes it much easier to see if the receiver
is hearing anything at all.

73,
Bob, N6TV


On Wed, Jun 12, 2019 at 7:13 AM Pete Smith <n4zr at comcast.net> wrote:

> OK, here's a mystery - I have a 14-bit Red Pitaya and a QS1R.  I normally
> feed them both off a Clifton Labs Norton preamp through a Mini-Circuits
> splitter (about 3.5 dB insertion loss).  In tests way back when, using
> number of spots as the metric, I had found the Red Pitaya to be
> substantially equal to the QS1R in performance.
>
> A month or so ago, I noticed that the RP seemed not to be spotting, but I
> was preoccupied with other things. Today I decided to get serious about
> diagnosing the problem.  First, I verified all of the interconnecting
> cables.  Then I tested the QS1R and the Red Pitaya with their respective
> SDR software, SDRMAX V and PowerSDR.  I used an Elecraft XG-3 to verify the
> sensitivity of both SDRs, which did not reveal any obvious problems.
>
> Then I started Skimserv and Aggregator on both PCs.  It's CWT Wednesday,
> so I immediately noticed a lot of activity, as measured by the number of
> decoders that Skimserv spawned.  I did notice that the number on the Red
> Pitaya lagged substantially behind that on the QS1R.  The real shocker,
> though - in that hour, the QS1R system spotted over 200 stations (many
> re-spots, of course) while the Red Pitaya system logged *none.*
>
> I'm baffled - clearly something is wrong with the Red Pitaya system, but
> what?  Any suggestions welcome!
>
> --
>
> 73, Pete N4ZR
> 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.
>
> _._,_._,_
> ------------------------------
> Groups.io Links:
>
> You receive all messages sent to this group.
>
> View/Reply Online (#3112) <https://groups.io/g/RBN-OPS/message/3112> | Reply
> To Group
> <RBN-OPS at groups.io?subject=Re:%20%5BRBN-OPS%5D%20Red%20Pitaya%20Hears%20but%20Skimserv%20doesn%27t%20spot>
> | Reply To Sender
> <n4zr at comcast.net?subject=Private:%20Re:%20%5BRBN-OPS%5D%20Red%20Pitaya%20Hears%20but%20Skimserv%20doesn%27t%20spot>
> | Mute This Topic <https://groups.io/mt/32041148/796217> | New Topic
> <https://groups.io/g/RBN-OPS/post>
>
> Your Subscription <https://groups.io/g/RBN-OPS/editsub/796217> | Contact
> Group Owner <RBN-OPS+owner at groups.io> | Unsubscribe
> <https://groups.io/g/RBN-OPS/leave/1860120/65889513/xyzzy> [n6tv at arrl.net]
> _._,_._,_
>
>