!
If this latter is actually your case, then a better shielding or a
better balancing of the mixer is in order.
73 Alberto I2PHD
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to implement something using the sound card as a
mike input to deliver I and Q signals ?
Yes, I will, but not with SDRadio. The Tx function will eventually be
in the new software being written now. But first I have to complete
the Rx part.
73 Alberto I2PHD
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--- In soft_radio@yahoogroups.com, i2phd [EMAIL PROTECTED] wrote:
Be sure to download
from Internet (sorry, don't remember the URL) the errata sheet.
I found it. It is here :
http://www.arrl.org/notes/8799/
73 Alberto I2PHD
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is
Software Radio Architecture: Object-Oriented Approaches to Wireless
Systems Engineering, by Joseph Mitola III
but I haven't read it, and don't have the ISBN number.
73 Alberto I2PHD
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I2PHD
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equirement for CMRR is not so stringent, while a low noise israther important. But of course I could be wrong. Let's see ifother forum members have different opinions.I take this occasion to say to everybody Merry Christmas and Happy New Year !73 Alberto I2PHD
SPONS
Alberto I2PHD
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Sorry for the last message (which I have now deleted and banned the
author), which escaped through my surveillance...
Should not happen anymore.
73 Alberto I2PHD
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of the converted signal.
You might find interesting to read the group [EMAIL PROTECTED]
73 Alberto I2PHD
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* Your use
://sundry.i2phd.com/Tayloe_mixer_article.zip
for everybody to download. I didn't put it into the Files section of
this group to not consume space for duplicate info.
73 Alberto I2PHD
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, which
covers my needs.
The IPP can be found here:
http://www.intel.com/cd/software/products/asmo-na/eng/perflib/ipp/index.htm
73 Alberto I2PHD
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time reading could be this one:
http://bdn.borland.com/article/0,1410,21300,00.html
73 Alberto I2PHD
--
bool WavIO::OutOpen(char *name)
{
strcpy(outname, name);
outhandle = FileCreate(outname);
if(outhandle 0)
{ strncpy(riffhdr.riff, RIFF
--- In soft_radio@yahoogroups.com, fanoo [EMAIL PROTECTED] wrote:
Note: forwarded message attached.
[Non-text portions of this message have been removed]
Farhan,
this group does not distribute attachments, they are plainly deleted...
73 Alberto I2PHD
Yahoo! Groups Links
, but it could well be thanks to my email
provider (usa.net) which has very effective virus and spam filters. As
a matter of fact I receive a total of about 150 messages per day, and
on average only 3 or 4 are spam. I don't see a virus in my inbox since
more than a couple of years...
73 Alberto I2PHD
P.S
--- In soft_radio@yahoogroups.com, FRANCIS CARCIA [EMAIL PROTECTED] wrote:
Frank,
I've known I2PHD for a while from another RX net gang. I follow
his great software and enjoy using it. Frank WA1GFZ
Frank [EMAIL PROTECTED] wrote:
Hi,
Since that forum is brand new, I would have to ask
is the meaning of those strange
commands ? Anybody knows ?
73 Alberto I2PHD
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it to you too. Be
warned that you will require the C++Builder V6 compiler from Borland
to compile it. V6 is required, V5 won't do. Just let me know if I
should send the source package to you.
73 Alberto I2PHD
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kHz that sweeps several times from 10 to 14
kHz with a period of ten seconds.
If you play this wav file with, e.g., Real Audio or Winamp and send the
two sound card output channels to your QSE, you can test how it works.
73 Alberto I2PHD
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will pass. If you want to communicate through diagrams
or pictures, please put them in the Photos section of the group,
referencing them in your message. Thanks.
73 Alberto I2PHD
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Ham radio
you will need just one sound card, not two.
73 Alberto I2PHD
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Ham radio
Craft hobby
Hobby and craft supply
the well known problems. 11025 Hz is
a good choice as any other. And if you are intending to build a VFO,
not a synthesizer, you are almost obliged to use the first method, as
it would be a bit difficult to tune a VFO in discrete, all equal, steps.
73 Alberto I2PHD
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is
outside the range of the adjustments. Yes, you are right, a wise thing
to do would be to implement the delay of one full sample on one of the
channels to cope with this kind of problem. I have put it in the to-do
list, thanks.
73 Alberto I2PHD
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there something useful for my purposes.
TNX es 73 Alberto I2PHD
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Ham radio
Craft hobby
Hobby and craft supply
other parts
of the world, (and it goes from 135.7 to 137.8 kHz), but not in the
US. A recent request was rejected by the FCC. US operators can obtain
a special permit to operate in that band however.
But I am sure some US hams can be more precise than me on this subject.
73 Alberto I2PHD
--- In soft_radio@yahoogroups.com, KD5NWA [EMAIL PROTECTED] wrote:
It uses the Intel libraries (the older ones) that are supposed
to be very fast code.
Then I am interested as well in those components...
73 Alberto I2PHD
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Intel is to upgrade to the Intel Integrated
Performance Primitives. But this is an upgrade I don't want to do, as
it is not for free, and given the vast amount of money I make from my
programs, I could not justify the expense :-) Thanks
73 Alberto I2PHD
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ready and willing to switch if I find something better
done and more efficient.
73 Alberto I2PHD
SPONSORED LINKS
Ham radio
Craft hobby
Hobby
r I have the time to do
it), also considering that the failing API (WinKaiser) can be
circumvented with some workarounds.
Thanks to everybody for the interest and for the useful suggestions.
73 Alberto I2PHD
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and adjusting the
decimation ratio. Also the AGC behavior was changed.
Glad that those changes (and the time spent to design and code them)
has produced positive results!
73 Alberto I2PHD
Alberto:
The Beta version of Winrad was good and Winrad 1.0 is even better.
I
better than the Delta 44, and
it will be interfaced with the PC using the Ozymandias board, which
implements an USB 2.0 interface. I am following very carefully that
project, to evaluate if/when adapt Winrad to it.
73 Alberto I2PHD
-
[EMAIL PROTECTED] wrote
to HAM-RADIO 2006 to distribute
in his stand. I uploaded a PDF copy of it here:
http://sundry.i2phd.com/SDR-X_English.pdf
Maybe he has modified it before printing the paper copies he intend to
distribute, but the substance is there.
73 Alberto I2PHD
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to avoid aliasing artifacts at the new, lower, sampling rate.
73 Alberto I2PHD
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specifically to not reveal his name or call sign, as he
would like not to be flooded by emails asking for progresses, info, etc.
73 Alberto I2PHD
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of 4 splitter, also 4 MMIC amplifiers
and 4 transformers ADT4-6T, You can combine the items and do a single
expedition. In the past USPS has worked very well for small items from
the US to Italy.
TNX es 73 Alberto I2PHD
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Please tell me if this is what you wanted to know, or if I did
misunderstand your question.
73 Alberto I2PHD
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of this group. The direct URL for access is :
http://tinyurl.com/zvm3j
73 Alberto I2PHD
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are generated. The lock range is about 40 Hz.
73 Alberto I2PHD
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there, saying that it
is a spy site (meaning perhaps that the site tried to install a
spyware cookie). I don't know where ZoneAlarm got that information
(the site must be blacklisted somewhere), and if there is any way to
overcome it.
73 Alberto I2PHD
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, *I* am in command, not *you* ! :-)
73 Alberto I2PHD
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, possibly one that has been already
tested by somebody else, and you won't go wrong !
73 Alberto I2PHD
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External HD
16X DVD burner
256M Video card
For $650, I'm a happy camper.
Yes, that is a good price indeed. Let's see, 650 USD are about 508
Euro. No, for this price I would have a hard time to find here a PC so
well configured... congratulations !
73 Alberto I2PHD
for the ECSS mode. On Monday I will
replace the package of V1.0 on my Web site. With the error corrected
it should lock better to the carrier of the signal.
73 Alberto I2PHD
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* Your
,
suggestion accepted and implemented. I have just uploaded the
revised V1.00 of SDRadio, with the phase lock bug corrected and the
upper value of the bandpass window limited to 12 kHz.
73 Alberto I2PHD
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of filling of this FIFO, and when I see that it is not optimal
I slightly change the decimation factor to keep it constant.
73 Alberto I2PHD
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Individual
receiver,
and the other (not released yet, will be shortly) for the I0CG SDR-X
receiver. Other DLLs will be implemented as the case and the
opportunity will present.
73 Alberto I2PHD
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and the blue circled X on pin 1 removed ?
Without those markings I could use your image (rescaled) to produce a
mask for the photo etching of a PCB. Thanks.
73 Alberto I2PHD
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. The Audigy 2 NX is one of them, it is capable of
24-bit 96kHz sampling and playback.
73 Alberto I2PHD
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Andy,
thanks for sharing with us your programs. I haven't tested them yet,
but from the descriptions it looks like they can be very useful.
TNX es 73 Alberto I2PHD
generated by the hardware...:-)
Good luck and
73 de Alberto I2PHD
works with the MME drivers of your Audigy 2 NX card, then my
suggestion is to settle for these drivers, and in the meantime maybe
you could search on Internet to see if Creative has published updated
drivers for that card.
Good luck
73 Alberto I2PHD
one, the best way probably is to look on eBay to see if
somebody is selling a used one.
73 Alberto I2PHD
Merry Christmas and Happy New Year 2007
to everybody !
73 Alberto I2PHD
[Non-text portions of this message have been removed]
frequency limit dictated by some constraints, or
would it be possible to go down to e.g. 500 Hz, as the SDR-IQ does ?
That would be quite interesting both for ELF/VLF/LF reception and for
other uses, like bat detectors, etc.
And, have you fixed any tentative price range yet ?
73 Alberto I2PHD
...
73 Alberto I2PHD
many thanks for your report. I will look at it this afternoon. I am
a bit puzzled, as I did not modify anything in that area, but who knows..?
73 Alberto I2PHD
address.
73 Alberto I2PHD
seem to be able to chosse the best one for my work.
Wolfgang Hartmann
Wolfgang,
that page looks as it is contains very valuable information. It is a
pity I don't read German... I will try with the automatic translator
of Google, but sometimes the results are quite funny...
73 Alberto I2PHD
card.
Make it I2PHD instead of I4PHD, and then you are completely right...:-)
73 Alberto I2PHD
May I remind you all that this newsgroup is meant to discuss the
problematics of the Software Defined Radio architecture and subjects
*strictly* related...
Thanks
Your Friendly Moderator
Alberto I2PHD
-
--- In soft_radio@yahoogroups.com, [EMAIL PROTECTED
was referring to my phrase Your Friendly
Moderator, but instead to the title Your in The Army Now...
Am I correct ?
73 Alberto I2PHD
I2PHD
I have just uploaded in the Files section, I2PHD folder, the new
version of the file Winrad_Extio.pdf, with the specifications for a
DLL meant to support external hardware, interfaced with Winrad.
A few calls have their parameters changed, and some new calls have
added. Only Winrad V1.24
of the volume
slider
* Streamlined the code with a substantial reduction of the Winrad CPU
load
Feedbacks, comments and reports gladly accepted, thanks
73 Alberto I2PHD
Alberto I2PHD
no reasons why implementing that function in
Winrad. If instead you need the raw data, before any processing done
by Winrad, they are obtainable by using one of the new calls added to
the DLL specifications, namely the RawDataReady() call.
73, PE0FKO, Fred
73 Alberto I2PHD
.
73 Alberto I2PHD
of
the return code. This week I am busy with the preparation of my
presentation at 1st SDR Italy Convention next Saturday. Next week I
will issue an amended version of Winrad.
Thanks for the report.
73 Alberto I2PHD
luck with your project.
73 Alberto I2PHD
of their phase relationship and their amplitudes.
Check if one of them is much lower in amplitude than the other.
Those are the most probable causes of what you are observing.
73 Alberto I2PHD
--- In soft_radio@yahoogroups.com, i2phd [EMAIL PROTECTED] wrote:
For what it's worth, I attach here following a snippet of the C++
code I use to drive the I0CG's AD9951 DDS in the SDR-X receiver.
Oh my Godness, Yahoo has all mangled the nice formatting I gave to my
code
So I have just
a factor 4, not only 2 as in
the case of the 1 GHz chip.
73 Alberto I2PHD
Alberto I2PHD
(command line) file that renames all such
files with an extension of .dlo except the one that you want to use.
I use this method, even more brutally, doing the rename by hand...
73 Alberto I2PHD
a better card. My Delta 44 was bought on eBay a couple
of years ago for the equivalent of about 100 USD.
73 Alberto i2PHD
of
the LO with respect to the wanted signal, now that interfering tone will
be at 500 Hz, which may or may not be of less disturbance to the
listener's ears, depending on the personal preferences, the frequency
response of the headset/speaker used, etc.
73 Alberto I2PHD
, though), and a
Janus and a Ozy on order... does this tell anything about what my
intentions are ? :-)
73 Alberto I2PHD
P.S. But there is a but... the interface code for the USB port of the
Ozy board has been released under the GPL licensing scheme. So I
cannot use it, not at least until
I2PHD
there is the possibility to have
separate windows for the various parts of the program, movable
independently and with the possibility to hide those not immediately
needed. But, as said, that is a long term plan
73 Alberto I2PHD
,
could you please be more specific about the changes that you would
like to see on the AGC ? I suppose you want it faster in AM and slower
in SSB. Is this true ? Thanks.
73 Alberto I2PHD
I2PHD
there
are still some bugs in Winrad, so for the time being I prefer that
everybody is running the latest version, with the exception of those
who have Windows 98, and hence are forced to stay with the latest
version that runs under Win98.
73 Alberto I2PHD
this night or tomorrow the User Guide to fully explain
how to use this function.
As soon as the weaksignals site will be reachable again, I will update
that too. For the time being, please use the mirror, thanks.
73 Alberto I2PHD
with a hardware that is reasonably
balanced by itself.
73 Alberto I2PHD
days. I have been
told that it has a non-standard ASIO driver, at least as far as
channel numbering is concerned, so I will see what can be done to
convince it to work with Winrad:-)
73 Alberto I2PHD
Alberto i2PHD
for that. Some time ago I made some changes to that page, and
inadvertently broke those links. Tomorrow I will fix them.
In the meantime please use http://www.weaksignals.com
Thanks
73 Alberto I2PHD
to be acceptable under this point of view.
Products like the AD9954 (much valued by some because it has I and
Q outputs) are *terrible*. They produce a forest of spurs, which can
only partially be taken care of via software tricks.
73 Alberto I2PHD
, but more than the 9912.
Dave - WB6DHW
Dave, yes, I had the AD9854 in mind when typing that message, but my
fingers weren't much in synch with the brain... sorry.
73 Alberto I2PHD
, mirroring it
in a complex conjugate way, then do an IFFT with produces a real signal,
which is the demodulated audio.
I hope to have dissipated some of your doubts on how a SDR works.
73 Alberto I2PHD
wrote 9954 but I had in mind the 9854.
73 Alberto I2PHD
of.
73 Alberto I2PHD
worked at least as well as the RA6830 sync
detector and maybe slightly better.
So AM and HPSDR interface would be my dreamfrank
Frank,
thanks for the report. Sometimes the KISS (Keep It Simple, Stupid)
principle pays off.
73 Alberto I2PHD
will make that user selectable, together
with the frequency step associated at each wheel movement :-)
73 Alberto I2PHD
I2PHD
---
macks0 wrote:
Hi Alberto hi all my name is Massimo,i hope to make sense of well in
English even if I preferred in Italian because from the name I believe
you are Italian but here i see all in english. I possess a vr500 and
listening all the frequencies but I
/marzaglia.html
73 Alberto I2PHD
an exact number, but I seem to recall that the
bandwidth occupied is in the order of 150 kHz.
73 Alberto I2PHD
please !
Hi Andy,
some good stuff on the subject here :
http://www.sm5bsz.com/digdynam/practical.htm
73 Alberto I2PHD
or what prevents you from adding a proper
stereo card ?
73 Alberto I2PHD
P.S. In any case Windows has no problems in having multiple sound
cards active at the same moment. Only that you cannot use them as you
described.
a progress
in the SDR field, but, lacking further explanations or evidences, I am
convinced that it can't work.
But, as said, let's hope that Phil himself would give more
explanations instead of thinking about exploiting commercially that
idea, as he said he was intending to do...
73 Alberto I2PHD
I2PHD
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