[Skimmertalk] Red Pitaya Input 2

[Wes Cosand]

David, I'm using the ports to use different antennas for different bands
and preliminary data seem to indicate that it is working OK.  That would be
a big deal for me since I use routinely use three different antennas with
three different receivers and computers for different bands.  It would cut
my electricity costs.  (And I'm working on a 4th antenna for the new low
frequency bands.)

Wes WZ7I

On Fri, Oct 20, 2017 at 6:51 AM, David Robbins <k1ttt at verizon.net> wrote:

> Can you use both inputs at the same time for different things?
>
> David Robbins K1TTT
> e-mail: mailto:k1ttt at arrl.net
> web: http://wiki.k1ttt.net
> AR-Cluster node: 145.69MHz or telnet://k1ttt.net:7373
>
>
>
> -----Original Message-----
> From: Skimmertalk [mailto:skimmertalk-bounces at contesting.com] On Behalf
> Of Wes Cosand
> Sent: Thursday, October 19, 2017 21:51
> To: Bob Wilson, N6TV
> Cc: SkimmerTalk Reflector
> Subject: Re: [Skimmertalk] Red Pitaya Input 2
>
> The ability to assign Input 1 and Input 2 to different receivers would be
> a significant advantage.  But I have forgotten what little Linux I was
> supposed to have known.
>
> When I try to edit the line
>
> sdr-receiver-hpsdr 1 1 1 1 1 1 &
>
> to read
>
>
> sdr-receiver-hpsdr 1 2 1 1 1 1 &
>
> with the Nano editor I get an error: "Read Only File"
> so I type
>
>
> On Tue, Aug 15, 2017 at 1:10 PM, Bob Wilson, N6TV <n6tv at arrl.net> wrote:
>
> > Dan,
> > ...
> >
> > If you do need to use INP2, note that you'll have to move the jumpers
> > across pins 2 and 5 on INP2 just as you did on INP1, to bypass the
> > built-in attenuator.  There are separate attenuators jumpers for each
> input.
> >
> > Jan's suggested edit is correct, though I don't see a file named
> > */sbin/discovery.sh* on my 0.97 image.
> >
> > You can edit the *start.sh* file using the *nano* full screen editor
> > (or
> > *vi* if you're more comfortable with that one), e.g.
> >
> > nano /opt/redpitaya/www/apps/sdr_receiver_hpsdr/start.sh
> >
> > Note that you have the option to use input 1 or 2 on each of the 6
> > receivers that it starts, giving you the option to use INP1 for the
> > low bands and INP2 for the high bands, if you have two antennas.
> >
> > Use Ctrl-X to exit the editor.  It will prompt you if you want to save
> > your changes.  Then reboot.
> >
> > I assume you already edited or replaced */etc/rc.local* after you
> > reformatted the microSD card, otherwise the SDR won't start
> automatically.
> > The Red Pitaya 0.97 needs to have these lines to start the SDR
> > receiver automatically every time it powers up:
> >
> > # Start the SDR Receiver compatible with HPSDR at boot time cat
> > /opt/redpitaya/www/apps/sdr_receiver_hpsdr/sdr_receiver_hpsdr.bit
> > >/dev/xdev
> > cfg
> > . /opt/redpitaya/www/apps/sdr_receiver_hpsdr/start.sh
> >
> > If you're not comfortable trying to cut and paste these lines into the
> > file yourself, there's an another way.  Just enter these commands to
> > save the old *rc.local* file, fetch a new one with the required
> > commands already in place, and mark it executable:
> >
> > cd /etc
> > mv rc.local rc.local.old
> > wget http://www.kkn.net/~n6tv/rc.local chmod +x rc.local
> >
> >
> > 73,
> > Bob, N6TV
> >
> > On Tue, Aug 15, 2017 at 1:19 AM, Jan ok2zaw <honza at ok2zaw.com> wrote:
> >
> > > Hi Dan!
> > >
> > > I do have the same problem at OL7M. When I run Spectrum analyzer, there
> > is
> > > no sognal on IN1. PIC: http://www.ok2zaw.com/SDR/spectal.png  I used
> IN2
> > > but still board was "unstable". I do have another one which works
> great!
> > > I am sending the first one today back - I bought it directly on RP
> web. I
> > > think the best way is to write to support.
> > >
> > > Anyway, there is way to switch to IN2:
> > >
> > > /sbin/discovery.sh
> > >
> > > /opt/redpitaya/www/apps/sdr_receiver_hpsdr/start.sh
> > >
> > > To select IN 2 for all six receivers you'll need to replace
> > >
> > > sdr-receiver-hpsdr 1 1 1 1 1 1 &
> > >
> > > with
> > >
> > > sdr-receiver-hpsdr 2 2 2 2 2 2 &
> > >
> > > Vy 73 Jan OK2ZAW / OL9A / OL7M
> > >
> > >
> > > S pozdravem Jan Šustr
> > > Regards Jan
> > >
> > > http://www.ok2zaw.com
> > > http://www.qro.cz
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: Skimmertalk [mailto:skimmertalk-bounces at contesting.com] On
> Behalf
> > > Of Dan Downard
> > > Sent: Tuesday, August 15, 2017 12:48 AM
> > > To: skimmertalk at contesting.com
> > > Subject: [Skimmertalk] Red Pitaya Input 2
> > >
> > >
> > > I configured my Red Pitaya per all of the excellent guidelines on this
> > > reflector.  Thanks to all.  Everything was working great, but now I
> have
> > a
> > > problem:
> > >
> > > Something happened to the microSD card that came with my unit.   I
> bought
> > > a new microSD card and formatted it using the .97 image.  Everything
> > > appears to be working but no signals, and no waterfall on HPSDR, not
> even
> > > background noise, are present.
> > >
> > > I tried loading the Spectrum Analyzer app and noticed that Input 1 was
> > > dead but Input 2 seemed to be OK.  I am assuming that something
> happened
> > to
> > > Input 1!
> > >
> > > Could someone tell me how to make Input 2 the primary receiver/antenna
> > > port?  I saw a Ubuntu script somewhere but can’t find it.
> > >
> > > Has anyone else had this problem?  I bought the unit from Mouser and am
> > > going to contact them once I verify the problem.
> > >
> > > Dan K4FXN
> > >
> > _______________________________________________
> > Skimmertalk mailing list
> > Skimmertalk at contesting.com
> > http://dayton.contesting.com/mailman/listinfo/skimmertalk
> >
>
>
>
> --
> Wes Cosand
> 6299 Route 413
> PO Box 349
> Pipersville, PA 18947
> _______________________________________________
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> Skimmertalk at contesting.com
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>
>


-- 
Wes Cosand
6299 Route 413
PO Box 349
Pipersville, PA 18947