[Linrad] Re: Linrad and MAP65-IQ

[Les <hotmail.com; mp3downloadcentral@xxxxxxxxxxxxxxxx>]

Hi All,

Set the IP based on IPconfig ( with a Return).
Set to above normal.

Linrad works fine when not in NetSend mode.   When I toggle it to
NetSend and then SSB mode to recieve,  in the lower left hand side the
% drops to <1% and I get "no input" message.

Tried it on 2 machines and same problem, so the conclusion is Im
setting something up wrong.


Les W2LPL


On Mar 4, 9:26 am, Joe Taylor <j...@xxxxxxxxxxxxx> wrote:
> Hi Guy and all,
>
> VK2KU wrote:
> > I am finally up and running MAP65-IQ with Linrad 3-02.
>
> That's great!  I'm happy to hear of another success.  Please
> continue to report your findings.
>
> > 3. The critical thing seems to be the Linrad priority setting.
> > Previously I have always run Linrad with AboveNormal priority,
> > but I forgot to include this when setting up Linrad 3-02.
> > In Linrad Setup, at the question "Run with High Process Priority", I
> > said YES - WRONG!!!!
>
> Yes.  I reported this to Leif a week or so ago; he was
> somewhat skeptical (and also rather out of patience with the
> seemingly odd behavior of Windows, and the
> difficult-to-plumb depths of Microsoft documentation).  I
> sympathize.
>
> However, at least for the Linrad-and-MAP65-IQ-on-Windows
> combination, I think we have determined what works best.
>
> > When I subsequently set Linrad to run at AboveNormal priority, the
> > High setting in the Setup overrode this. Linrad freezes with
> > the High priority setting.
>
> The same behavior is observed here.
>
> > 4. So went back into Setup (S), and answered NO to the high priority
> > question.
>
> > 5. Right click the ShortCut to Linrad, Click Properties, and edit the
> > Target:
> > C:\WINDOWS\system32\cmd.exe /c START /AboveNormal YourPath\linrad.exe
> > where YourPath is the full path to your linrad.exe file.
> > This will start Linrad every time with AboveNormal priority.
>
> A good solution.
>
> > 6. Everything now works!
>
> Voila!
>
> > 7. Initial impression 1 is that some things don't decode that would
> > under WSJT6 - not really sure about that yet.
>
> I don't think you'll find this true in general.  Keep in
> mind that the wideband (60-90 kHz) decoding pass typically
> must deal with dozens (if not a hundred or more) birdies.
> It needs to sort these out and distinguish them from
> legitimate JT65 signals.  The threshold for this decision
> may be a little higher in MAP65 than in WSJT, so a few
> potential decodes may be lost and not appear in the
> "Messages" and "Band Map" windows.
>
> At your selected "QSO frequency", however, things are done
> slightly differently -- more like in the narrow band WSJT
> algorithm.  There, especially if you have reduced "Tol" to
> 100 Hz or less, you will get slightly higher sensitivity.
>
> You can always double-click on a visible signal to force a
> decoding attempt with maximum sensitivity.
>
> Some other decoding features in a Linrad+MAP65 system are
> decidedly better than those in WSJT.  The AFC, for example.
>     And, of course, Linrad's wideband noise blanker.
>
> > 8. Initial impression 2: the narrow waterfall doesn't seem to feed
> > continuously as in WSJT6.
> > Am I missing something?
> > This removes the ability to decode shorthand messages by eye before
> > the end of the sequence, and to freeze on a weak trace before the
> > decode.
>
> You are not missing anything.  As described in the MAP65
> documentation at
>
> http://physics.princeton.edu/pulsar/K1JT/MAP65_Quick_Start.txt
>
> "6. The waterfalls do not (yet) scroll in real time.
> Rather, they are updated at the end of each minute when
> decoding takes place.  Real-time scrolling may be added in
> the future."
>
> I have not added this feature, and have no present plans to
> do so.  In a Linrad/MAP65-IQ system, you have waterfalls all
> over the place!  Two in Linrad, two more in MAP65.  I use
> the high-resolution Linrad waterfall for visual decodes.
>
> For those that have missed it: in MAP65-IQ r1089, you must
> enter a parameter "Fadd" on the Setup -> Options screen.
> The value of Fadd is 144000 minus 1000 times the MHz part of
> the frequency setting for the SDR-IQ.  Example: you set the
> SDR-IQ to 28.050, so 144000-28000 = 116000.  Sorry, I know
> this is clunky and inconvenient.  The next program release
> will be better.
>
>         -- 73, Joe, K1JT

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