[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, oder ist Linrad inzwischen ein kompaktes Paket (siehe WINRAD; ein DOWNLOAD und es läuft) 73 Heinz, DM2BHG - Original Message - From: Alex Artieda [EMAIL PROTECTED] To: Linrad mailinglist linrad@antennspecialisten.se 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 HB9DRI # This message is sent to you because you are subscribed to the mailing list linrad@antennspecialisten.se. To unsubscribe, E-mail to: [EMAIL PROTECTED] To switch to the DIGEST mode, E-mail to [EMAIL PROTECTED] To switch to the INDEX mode, E-mail to [EMAIL PROTECTED] Send administrative queries to [EMAIL PROTECTED] # This message is sent to you because you are subscribed to the mailing list linrad@antennspecialisten.se. To unsubscribe, E-mail to: [EMAIL PROTECTED] To switch to the DIGEST mode, E-mail to [EMAIL PROTECTED] To switch to the INDEX mode, E-mail to [EMAIL PROTECTED] Send administrative queries to [EMAIL PROTECTED]
[linrad] 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 # This message is sent to you because you are subscribed to the mailing list linrad@antennspecialisten.se. To unsubscribe, E-mail to: [EMAIL PROTECTED] To switch to the DIGEST mode, E-mail to [EMAIL PROTECTED] To switch to the INDEX mode, E-mail to [EMAIL PROTECTED] Send administrative queries to [EMAIL PROTECTED]
[linrad] 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 # This message is sent to you because you are subscribed to the mailing list linrad@antennspecialisten.se. To unsubscribe, E-mail to: [EMAIL PROTECTED] To switch to the DIGEST mode, E-mail to [EMAIL PROTECTED] To switch to the INDEX mode, E-mail to [EMAIL PROTECTED] Send administrative queries to [EMAIL PROTECTED]
[linrad] Re: Map65 de W5UN
Hi Joe, Well, I could help, but I do not have Xpol antennas. I do have SDR-IQ and am running Linrad with it (working nicely now). I'm, not sure how to inject two receiving antennas into the SDR-IQ though. It is possible that I could rig antennas here to receive both polarities. Let me know if you think I might be useful. Dave, W5UN At 03:01 7/4/2007, you wrote: This morning I made the first QSOs using the new program MAP65: ZL2DX, VK4JMC, and VK4CDI were worked on 2m EME. # This message is sent to you because you are subscribed to the mailing list linrad@antennspecialisten.se. To unsubscribe, E-mail to: [EMAIL PROTECTED] To switch to the DIGEST mode, E-mail to [EMAIL PROTECTED] To switch to the INDEX mode, E-mail to [EMAIL PROTECTED] Send administrative queries to [EMAIL PROTECTED]
[linrad] Re: Linrad under Windows
Hello Alex, 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. The difference between Linux and Windows is how you have to configure your operating system. Under Windows you have to find the proper drive routines for the soundcard that you are going to use and then install it properly for Windows. Actually this is much easier under Linux in case you assemble a computer from bits and pieces that you can collect from junk boxes. There are many soundcards for which you can not find the Windows drivers on the Internet, you have to have them installed with the Windows installation with which they were bought. On the other hand, in case you already have a working Windows machine with properly installed sound, it will be far easier to use it as it is than to install Linux. Once the OS is properly set up, (under Windows you might have to install DLLs in case you want to control hardwares such as SDR-14 or the WSE converters while such things are automated under Linux) the proper configuration of Linrad is OS-independent. How to set up Linrad depends on what you want to achieve. Like Alice in the Wonderland. I can not tell you what direction to go if I do not know where you want to arrive. The problem with Linrad (and the strength of it) is that the program itself does not make many assumptions about what you actually want to achieve. It means that you can set it up in many different ways and most of them are inefficient and silly for one reason or another. Linrad does not know that you did not do such things on purpose You asked for the optimum settings for WSJT. Here I have no experience, but what would be optimum may be very different depending on the circumstances. First of all, do you need the Linrad noise blanker? If you do, will it be enough to use the dumb blanker? Maybe you could reduce the noise floor by a couple of tenths of a dB by using the smart blanker also. Depends on the bandwidth of your hardware and your local QRN situation. Secondly, do you wish maximum visibility for weak WSJT signals over the entire bandwidth or do you want to zoom in around a CQ frequency? It may be possible for the Linrad AFC to lock to a sync tone that drifts with frequency in a way that your JT decoder can not handle. If you want to use Linrad to correct for a non-linear and large frequency drift you should invoke the AFC and learn how to master the bandwidth, averaging and time delay parameters that affect its operation. Generally speaking, and this is for all Linrad users: 1) Set Linrad up as you think should be ok according to what you have found at various Internet locations or else found to be reasonable. 2) When you have a situation of any kind where you have real difficulties to copy, press S to save a recording of the difficult signal during at least 30 seconds. Then pack the recorded file plus all the par_ files in your Linrad directory into a zip, tar.bz2 tar.gz file. Then send a mail to me so we can agree in what way you can make the perhaps very large file available to me. I need real life examples to try to find out what might be optimal processing parameters in special situations Such files might also point to problems that could be managed by improved processing algorithms. For the Linux vs Windows discussion: 1) As far as I know there is no difference provided that the computer is fast enough. 2) A computer that is fast enough for Linux may be hopelessly inadequate for Windows, but Pentium IV and above is perfectly adequate for Windows. 3) In case you use USB for the SDR-14 or SDR-IQ, Linux will allow more bandwidth than Windows.(98, 2000 or XP. I know nothing about Vista) 4) Linrad is available as source code for both Windows and Linux. It is extremely easy to install all the free tools needed for either OS and then make changes in for example the user routine that can talk to your transceiver. 73 Leif / SM5BSZ # This message is sent to you because you are subscribed to the mailing list linrad@antennspecialisten.se. To unsubscribe, E-mail to: [EMAIL PROTECTED] To switch to the DIGEST mode, E-mail to [EMAIL PROTECTED] To switch to the INDEX mode, E-mail to [EMAIL PROTECTED] Send administrative queries to [EMAIL PROTECTED]
[linrad] Re: PCM2900 sound chip in Linrad
Hi David, 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. A delay difference between I and Q will cause a phase error that grows linearly with frequency. In Linrad there is a calibration procedure that will compensate for an arbitrary variation with frequency of both phase and amplitude errors. The reason is that anti-alias filters (such as those used in the WSE units) would be extremely difficult to match between the channels. The calibration should take care of the delay so there is no feature in Linrad to treat it as a special case. 73 Leif / SM5BSZ # This message is sent to you because you are subscribed to the mailing list linrad@antennspecialisten.se. To unsubscribe, E-mail to: [EMAIL PROTECTED] To switch to the DIGEST mode, E-mail to [EMAIL PROTECTED] To switch to the INDEX mode, E-mail to [EMAIL PROTECTED] Send administrative queries to [EMAIL PROTECTED]
[linrad] Re: PCM2900 sound chip in Linrad
Hi David,
The PCM2900 has a design defect so that one channel is a clock
tick later on the usb line to the computer.
Sorry I didn't make it clear. I have played with small corrections in
amplitude and phase.
Actually in Winrad, I did the 1 clock shift and the fine adjustments,
and never got the image at negative frequency to be less than 15 db
lower than the main signal.
Have you tried the Linrad calibration procedure? I think it should
take care of this problem - but it will not work at the
higher frequencies. At the Nyquist frequency one clock tick is
180 degrees:-(
Linrad should work and give good balance for the central region, but
at half the Nyquist frequency the phase error will be 90 degrees
and then the phase relation will be 0 or 180 degrees for upper and lower
sideband respectively and I do not know whether the Linrad routine can
handle that. If you care to give it a try I would be interested to
know over how many percent of the passband you can get good image
suppression.
In Linrad you can add a few lines in the code to shift the samples
one position for one channel. For Linux, the read is in
lsetad.c, the function thread_rx_adinput(void) and you should
add something to shift samples in the buffer rxin_isho.
if(ui.ad_device_no 256)
{
read(rx_audio_in, rxin_isho, ad_read_bytes);
}
In Windows, the read is in wsetad.c, the function
winthread_rx_adinput(PVOID arg) and you should also here manipulate
rxin_isho
if(ui.ad_device_no 256)
{
memcpy(rxin_isho,c1,ad_read_bytes);
rxin_isho is a short int array (16 bits) and it contains
ad_read_bytes/2 16 bit words. If your soundcard giver 24 bits,
two words in rxin_isho are used for each sample.
Save the last sample in a local variable, then shift all samples of one
channel one position, fetch the last sample of the previous read
from a global variable and finally copy the new last sample into
the global variable.
73
Leif / SM5BSZ
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