-IF and I/Q questions
To: elecraft postingelecraft@mailman.qth.net
Message-ID:929717600FA246A7AEA27697ADF1FEB3@BIOSTAR
Content-Type: text/plain; charset=Windows-1252
Whoops, apparently I do not have permission to post to the Google groups,
yet. So it will be awhile before I can.
So, FWIW, I
be a good idea to add as well.
73,
Larry N8LP
On 11/15/2011 11:01 PM, elecraft-requ...@mailman.qth.net wrote:
Date: Tue, 15 Nov 2011 13:21:24 -0600
From: Richard Fjeldrpfj...@embarqmail.com
Subject: [Elecraft] SDR-IF and I/Q questions
To: elecraft postingelecraft@mailman.qth.net
Message
Larry,
I think you are correct. This now makes sense.
Thanks,
Dick, n0ce
_-
Message: 10
Date: Wed, 16 Nov 2011 09:21:58 -0500
From: Larry Phipps n...@telepostinc.com
Subject: Re: [Elecraft] SDR-IF and I/Q questions
To: elecraft@mailman.qth.net
Message
Larry, (Reply to message 12, 16 Nov 2011)
Yes, I have the XG2 generator for portable use, and another gen in a IFR1500 I
can use.
I wrote down the test levels when I tested the SoftRock w/Z10,000 but
I don't remember them. I hope I can find the notes easily.
I found this interesting: (As the
need can be found here...
http://www.telepostinc.com/TRXP.html
73,
Larry N8LP
On 11/15/2011 3:53 AM, elecraft-requ...@mailman.qth.net wrote:
Date: Mon, 14 Nov 2011 12:42:41 -0600
From: Richard Fjeldrpfj...@embarqmail.com
Subject: [Elecraft] SDR-IF and I/Q questions
To: elecraft
Larry,
Thank you for the suggestion. That could be possible. I'd hate to remove the
Z10,000
Buffer/Amp to change out a SMD component, but that may be what I will have to
do.
My Z10,000 is set for 0 dB gain at present. I just e-mailed the Google PSDR-IF
group
a question about an observation
Whoops, apparently I do not have permission to post to the Google groups, yet.
So it will be awhile before I can.
So, FWIW, I will say it here, until then.
I have a K3 with a SoftRock Lite II IF receiver , and I have to use SDR-1000 in
the setup. When I do the Image Rejection Calibration, I
Dave,
I can see your point. One of my earlier posts referred to the problem of
finding an acceptable arrangement to have a pan-adapter for a KX3 using
the I/Q leads, as the IF isn't brought out. I apologize for not making that
distinction in the subject line. That may have thrown others off
What specific shortfalls in SDR applications that don't have images lead
you to conclude they are inferior to the P3?
Also, keep in mind that SDR is not completely defined by
soundcard-based configurations. Have you considered other
computer-based SDR front ends like SDR-IQ or QSR-1 before
To: elecraft posting elecraft@mailman.qth.net
Sent: Monday, November 14, 2011 1:49:59 AM
Subject: [Elecraft] SDR-IF and I/Q questions
I didn't get any responses to my questions asking for info about those who were
successfully running SDR-IF software on a par with a P3, or from those who
were
Well Dave, maybe I am missing something here, but this thread has been
about the anticipated KX3 and having a Pan-Adapter to use with it. As I
understand
it, the I/Q leads are being brought out, but not the IF. So other SDR
receivers, or adapters, are not
needed. Therefore, we are down to
The thread title didn't say anything about being restricted to the KX3,
and your comment simply stated that you were giving up on SDR in general
... hence my comment. Whatever rig you've been having your problems
with (I assume a K3), it certainly wasn't a KX3.
I'm curious which programs you
David
Space diversity with the K3 is an interesting idea.
A variable phase shift could be achieved by adding the raw audio from
main rx to a 90degree phase shifted version of itself. Adjusting the
relative amplitude of the 90deg version will then vary the resultant phase.
Is a phase shift at
Hi,
Lots of people, including myself are using NaP3 with the K3. I haven't seen
an image for a very long time. The automatic image rejection algorithm is
perhaps a little moody if there are next to no signals, which certainly
hasn't been the case recently where it is the most useful, on 10m. The
I didn't get any responses to my questions asking for info about those who were
successfully running SDR-IF software on a par with a P3, or from those who
were not successful.
I did not find any ground loops in my system, and I still do not know why some
SDR-IF programs run with mirrored
Greetings to Don Wilhelm and others,
I'm a couple Digests behind and I am responding to Vol 91, Issue 13. I have had
responses similar to the following:
.
I believe you are mixing two things (given the last paragraph of your post).
The SDR software
Dick,
The cause of mirror images is normally associated with the two audio
signals not being of equal amplitude and/or not 90 degrees out of phase
when they enter the number crunching part of the software. Yes,
ground loops can cause that, but check your cables for integrity and
be certain
The Infrasonic Quartet card (stereo, 192 kHz) comes with a small applet,
called FREEMIXER Panel, that works outside of the WIN sound management
system. This helper app allows one to independently play with the levels
(not the phase) of the incoming I/Q stream. I imagine other fast cards
come
John, do any of the SDR programs you mention allow you to monitor the
two audio outputs AFTER the inserted phase shift?
Here's why I ask, although it is essentially unrelated to a normal SDR
application ...
I'm convinced that we should be able to use the diversity feature of a
K3 with both
Don, (responding to your paragraph below)
Here is where I have been at for awhile. I have tested the output on the I/Q
leads with a O-scope and they are certainly close. Rocky verifies that, and
shows them within a dB. WinRad shows 90 degree phase, (and no mirror images).
Neither my
Dick,
If there are no images with Rocky or WinRad, but you do get them with
another application, I would suspect the application settings.
73,
Don W3FPR
On 11/11/2011 1:27 PM, Richard Fjeld wrote:
Here is where I have been at for awhile. I have tested the output on the I/Q
leads with a
Thank you, John, for posting this. (see below)
I was going to comment that articles I have read say the software adjusts the
phase of the
I/Q signals in the soundcard to cancel images. You have said it well. WinRad
HDSDR, perhaps
others, are doing it well. It seems to be a weak spot with
To those of you who have been using HDSDR, and commenting on setting the
offsets, I found the little Manager button handy to the right of the LO
frequency on the face of the GUI.
From there, you can select 'USER' and make up a list of your favorite
frequencies with both the LO and the TUNE
Ken,
Yes, and no, I don't believe NaP3 does logging internally, but adding
LP-Bridge to provide virtual serial ports (which emulate the K3 to the
application) can allow loggers, CW Skimmer, etc. to connect through a
single physical serial port (NaP3 would also connect through
LP-Bridge). No
:53 -0600
From: Richard Fjeldrpfj...@embarqmail.com
Subject: [Elecraft] SDR-IF and I/Q questions
To: elecraft postingelecraft@mailman.qth.net
Message-ID:A1A1511B47FF46F7A35DA9C84AFA1D5E@BIOSTAR
Content-Type: text/plain; charset=Windows-1252
This is the new subject title, and needs some
, elecraft-requ...@mailman.qth.net wrote:
Message: 26
Date: Wed, 9 Nov 2011 21:07:38 -0600
From: Tony Estepestept...@gmail.com
Subject: Re: [Elecraft] SDR-IF and I/Q questions
To:elecraft@mailman.qth.net
Message-ID:
CACHwrmPUciYL54oJ+sim8r+xjuaqOt9=1gcy3camkn5v74c...@mail.gmail.com
Content
On Thu, Nov 10, 2011 at 10:16 AM, Larry Phipps n...@telepostinc.com wrote:
Take a look at TRX-Pan, Tony
Thanks, Larry, I will certainly try it.
73,
Tony KT0NY
--
http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352
__
On Thu, Nov 10, 2011 at 10:16 AM, Larry Phipps n...@telepostinc.comwrote:
Take a look at TRX-Pan, Tony
Thanks, Larry, I will certainly try it.
=
This looks like a winner. It has a nice display of both VFOs, mouse-click
tuning, and a few simple controls. It took me 15 minutes
(Linrad) that I am using has this ability
(if proper drivers are available for the radio).
--
Message: 37
Date: Thu, 10 Nov 2011 07:42:12 -0500
From: Don Wilhelm w3...@embarqmail.com
Subject: Re: [Elecraft] SDR-IF and I/Q questions
To: elecraft@mailman.qth.net
Message
Ed,
The SDR-IQ apparently uses the USB connection for both audio stream and
rig control, but the KX3 does not.
The I/Q output of the KX3 is baseband audio, which would need to be fed
to a soundcard. The rig control is separate and will communicate with
the KX3 through the RS-232 serial
). The eme SDR sw (Linrad) that I am using has this ability
(if proper drivers are available for the radio).
--
Message: 37
Date: Thu, 10 Nov 2011 07:42:12 -0500
From: Don Wilhelm w3fpr at embarqmail.com
Subject: Re: [Elecraft] SDR-IF and I/Q questions
To: elecraft
was hoping that the KX3 may end up as a kinda Flex Lite
with access via a program or as a portable field unit
Ohhh its so good !
Bob
On Thu, 10 Nov 2011 17:43:22 -0500 Don Wilhelm w3...@embarqmail.com
writes:
Ed,
The SDR-IQ apparently uses the USB connection for both audio stream
and
Hi,
Many (most?) users of LP-Pan have switched from PSDR-IF to NaP3. Here:
http://www.telepostinc.com/NaP3.html
This software is much easier to set up and has most of the unuseable
features in PSDR removed. It provides audio (two receivers) but does not yet
support the VAC (which is only needed
Thanks, John
I thought maybe it was just me.
Good news. I will feel foolish if I am the last to know this, but I found
Simon Brown at SDR-Radio.com.
He has a nice presentation on SDR that is about 74 Mb. There is hope.
Richard Fjeld, n0ce
rpfj...@embarqmail.com
I'd rather be learning.
Fjeld rpfj...@embarqmail.com
Subject: [Elecraft] SDR-IF and I/Q questions
To: elecraft posting elecraft@mailman.qth.net
Message-ID: A1A1511B47FF46F7A35DA9C84AFA1D5E@BIOSTAR
Content-Type: text/plain; charset=Windows-1252
This is the new subject title, and needs some background, so
Dick and the Elecraft group;
I embrace the new KX3, as it appears to be SDR! (I LIKE the SDR stuff,
as I have had several of the Flex-Radio products, a couple of Tony
Park's Softrock-40 radios and an LP-Pan as well as a Cross Country
Wireless SDR.) In almost all cases, I have been able to
Richard,
I believe you are mixing two things (given the last paragraph of your post).
The SDR software application has no connection with the serial or USB
connection to the transceiver - the I/Q outputs are fed to the soundcard
and those alone can provide a panadapter type display with no
On Wed, Nov 9, 2011 at 5:51 PM, Don Wilhelm w3...@embarqmail.com wrote:
if you want a KISS panadapter display, use Rocky, but if you
want more extended rig control, get involved with the crowd that is
continually asking the authors for additional functions...
==
Somewhere along
Don et al
Don't think it's mentioned on the forum, but does any of the logging software
like wintest etc, interconnect freely with naP3 beta!!
Ken..G0ORH
Sent from my iPhone
On 9 Nov 2011, at 23:51, Don Wilhelm w3...@embarqmail.com wrote:
Richard,
I believe you are mixing two
This is the new subject title, and needs some background, so it will be lengthy
this time.
Some of us use SDR-IF, and the new KX3 will use SDR-I/Q methods for connecting
to a computer running SDR software and seeing the results on a monitor. (The
SDR-IF users must provide a SDR-IF receiver to
Just a short, curmudgeonly, comment from one who has used many
(almost all) of the extant SDR software packages...
These all seem to be excellent examples of software-gone-wild.
Apparently the authors received requests from various sources, and in an
attempt to include something for
On Tue, Nov 8, 2011 at 2:36 PM, Richard Fjeld rpfj...@embarqmail.comwrote:
...Some of us use SDR-IF...
=
Richard, I assume you know about the Google group for PSDR-IF:
http://code.google.com/p/powersdr-if-stage/issues/list
You may get some helpful info there.
The guys who
On Tue, Nov 8, 2011 at 2:36 PM, Richard Fjeld rpfj...@embarqmail.comwrote:
...Some of us use SDR-IF...
=
Richard, I assume you know about the Google group for PSDR-IF:
http://code.google.com/p/powersdr-if-stage/issues/list
You may get some helpful info there.
The guys who
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