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Leif Asbrink | 2 Jul 13:49

Re: [Moon-net] SDR-IQ and Linrad

Hello Fletch,

> I fired up the latest version of Linrad-for-Windows with the SDR-IQ this
> morning and met with limited success in that Linrad recognised the SDR-IQ.
> When setting up the parameters for the SDR however, I am presented with a
> number of SDR-IQ-specific parameter questions that I do not really
> understand for the most part.  I was able to get the displays properly
> operating after a fashion by entering values for the parameters, although I
> really am unsure what those parameters represent.  Has anyone been
> successful with the SDR-IQ and Linrad, and if so, can you give me an idea of
> what the SDR parameters represent and how to properly apply them?

The SDR-IQ (as well as the SDR-14) have an A/D converter sampling at
66.666 MHz giving a bandwidth of 33 MHz. The USB link to the PC limits
the bandwidth to something between 160 and 230 kHz depending on 
operating system and hardware - and of course also depending
on whether you have other softwares running simultaneously.

The data rate, samples per second therefore has to be reduced by a
large factor and that is accomplished by an AD6620 (Analog Devices)

How to run the AD6620 depends on what you want to achieve. This
chip does not quite have the computing power needed and the USB
link only has 16 bits while 24 would be needed to not loose any
information. To make a setup that is good in all respects is not
possible so one has to make compromises.

You may look upon the AD6620 as three frequency mixers followed by
IF filters. The parameters determine how well undesired responses
are suppressed in the filters.
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Joe Taylor | 3 Jul 17:58
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Beta Testing of MAP65

This morning I made the first QSOs using the new program 
MAP65: ZL2DX, VK4JMC, and VK4CDI were worked on 2m EME.

A basic description of the MAP65 program can be found at 
http://physics.princeton.edu/pulsar/K1JT/MAP65_Status.txt .
Although the document posted there was written six months 
ago, most of it is still relevant and correct.  I will bring 
the description up-to-date soon.

Later this week I expect to make a packaged version of MAP65 
available to a few beta testers. IZ7EZN and HB9Q will be in 
the first group.

The purpose of this message is (1) to ask whether anyone 
else is interested in participating in the early tests, and 
(2) to ask whether subscribers to this list would like to 
see the discussion that takes place among the beta testers. 
  (If not, we will carry on our discussions more privately.)

In order to use the present version of MAP65 on the air you 
will need the following:

1. A 144 MHz EME system with Xpol antenna and separate Rx 
feedlines for the two polarizations.

2. An operating Linrad system, version 02.34.  Linrad should 
be set up to sample four signals -- an I/Q complex pair for 
each polarization -- at 96000 Hz.  (Equivalently, two real 
channels sampled at 192000 Hz would also work.)
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Alex Artieda | 3 Jul 20:30
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Linrad under Windows


I just finish installing Linrad 2.34 under Windows and works fine, my open
point is what are the best parameters for WSJT? I want to be familiar with
Linrad and any help regarding the combination of parameters is welcome. 

Computer here is P4 3.2 1GB RAM and audio card DELTA44 unmodified.

Best regards

Alex Artieda
HB9DRI

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Stan | 4 Jul 00:37

Re: Beta Testing of MAP65

Hello Joe,

It would be interesting to me, to hear the discussion of the
LINRAD/MAP65 implementation and evolution.

Any help I can get so I do not bury myself in a deep hole, again, would 
be helpful.

A fiber optic LAN (100 base) is in progress and I expect the master/slave
to work well under UDP.

WSJT with meteor scatter was the tool that helped me achieve the
100 confirmed grids on 2M and 50 grids on 222 MHz for VUCC.

Stan, W1LE  FN41sr   Cape Cod

Joe Taylor wrote:

> The purpose of this message is 

> (2) to ask whether subscribers to this list would like to see the 
> discussion that takes place among the beta testers.

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hb9dri-goEDY2E6dbVyDzI6CaY1VQ@public.gmane.org | 4 Jul 07:27
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MAP65 Beta


Hi Joe

I will be open to share with the list our experiences with MAP65 on 
HB9Q. 

Best regards

Alex Artieda
HB9DRI

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Alberto di Bene | 4 Jul 15:58
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Re: Beta Testing of MAP65

Joe Taylor wrote:
> 
> The purpose of this message is 
> 
> (2) to ask whether subscribers to this list would like to see the 
> discussion that takes place among the beta testers.

  Joe,

   technical discussions are always interesting to watch, even if a person does not directly participate in
the testing.
If there are objections from the other readers of this group, maybe you could open another one,
specifically devoted to 
MAP65. I am sure Leif agrees with me...

73  Alberto  I2PHD

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Heinz Bordé | 4 Jul 16:20
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Re: Linrad under Windows

Hallo Alex
Ich habe in den vergangenen Jahren schon zweimal versuch, LINRAD unter LINUX 
zu installieren.
Ich bin jedesmal an der Vielfalt der benötigten unterschiedlichen Programme 
(OSS etc.) gescheitert.
Nun will ich evtl einen dritten Versuch starten.
Was muß ich denn alles machen, um Linrad unter WINDOWS zum Laufen zu 
bringen? (Bei Dir hat es ja offensichtlich geklappt). Benötige ich immer 
noch etliche Programme, die im Zusammenspiel mit LINRAD benötigt werden, 
oder ist Linrad inzwischen ein kompaktes Paket (siehe WINRAD; ein DOWNLOAD 
und es läuft)

       73 Heinz, DM2BHG

----- Original Message ----- 
From: "Alex Artieda" <hb9dri@...>
To: "Linrad mailinglist" <linrad@...>
Sent: Tuesday, July 03, 2007 8:30 PM
Subject: [linrad] Linrad under Windows

>
> I just finish installing Linrad 2.34 under Windows and works fine, my open
> point is what are the best parameters for WSJT? I want to be familiar with
> Linrad and any help regarding the combination of parameters is welcome.
>
> Computer here is P4 3.2 1GB RAM and audio card DELTA44 unmodified.
>
> Best regards
>
> Alex Artieda
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Daniel Koch | 4 Jul 16:57
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Re: Linrad under Windows


...this is just to put Heinz in the right direction.

Hallo Heinz,

Linrad unter Windows läuft mittlerweile problemlos. Einfach wlr2-34.zip (288422 bytes) von der Linrad
Seite runterladen, entpacken und installieren.
Solltest du dazu noch Fragen haben kann ich dir vermutlich helfen.

gl

Daniel, DL3IAE

-------- Original-Nachricht --------
Datum: Wed, 4 Jul 2007 16:20:32 +0200
Von: "Heinz Bordé" <heinz.borde@...>
An: "Linrad mailinglist" <linrad@...>
Betreff: [linrad] Re: Linrad under Windows

> Hallo Alex
> Ich habe in den vergangenen Jahren schon zweimal versuch, LINRAD unter
> LINUX 
> zu installieren.
> Ich bin jedesmal an der Vielfalt der benötigten unterschiedlichen
> Programme 
> (OSS etc.) gescheitert.
> Nun will ich evtl einen dritten Versuch starten.
> Was muß ich denn alles machen, um Linrad unter WINDOWS zum Laufen zu 
> bringen? (Bei Dir hat es ja offensichtlich geklappt). Benötige ich immer 
> noch etliche Programme, die im Zusammenspiel mit LINRAD benötigt werden,
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Cynthia Lyons | 4 Jul 17:38
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PCM2900 sound chip in Linrad


I have not yet found how to set up Linrad to compensate for one channel 
of a sound card having a delay. The PCM2900 chip seems to have this problem.

David Underwood
K0IMH

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hb9dri-goEDY2E6dbVyDzI6CaY1VQ@public.gmane.org | 4 Jul 20:57
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Linrad under Windows


Hoi Heinz und Daniel

Many thanks for your answers but please if I'm writing in english 
is becouse I want to be open with everybody on the list, english is 
the international language and its better for everybody on the list, 
even if my calsing is HB9DRI my mother tongue is Spanish, I born in 
PERU and my original callsign is OA4CRK, like every body understand 
Switzerland is not the best place to learn and speak German, the 
dialect is imposible to learn, means guys lets speak ENGLISH.

My question regarding Linrad under Windows still open, as lot of 
peple claim works fine,  for me dont make sense to invest time in 
Linux, TNX, I have enought with windows, so please put away a 
religios fight Linux VS Windows; if some body knows how to properly 
configure Linrad under Windows I apreciate that information, that's 
all.

Best regards

Alex Artieda
OA4CRK HK3TAS HB9DRI

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