Hi Jim
Thanks for the information - possibly you might suggest what the end user
might do to fix the KX3 pin 1 problems on the other connectors?
thanks and Merry Christmas
73 John VE3NFK
--
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http://elecraft.365791.n2.nabble.com/Elecraft-KX3-IQ-out-and-spectral
On Wed,12/24/2014 2:46 PM, VE3NFK wrote:
Hi Jim
Thanks for the information - possibly you might suggest what the end user
might do to fix the KX3 pin 1 problems on the other connectors?
There's probably not an easy way to fix it -- it's established by how
the radio is built, and changing
Ok. This issue has been resolved.
First I want to send a huge Thanks to K9YC for his body of work on RFI, and
bonding , as well as W3FPR for setting me straight where I should be reading on
the pan adapter and soundcard isses. I spent some quality time, along with an
offline email (thanks
On Sat,12/20/2014 11:13 PM, Alan wrote:
The pin one problem normally shows up at RF frequencies because of the
inductance of the internal ground connection. But the issue under
discussion is 60 Hz interference, so I doubt that that's the problem.
Again, PLEASE study the tutorial.
73, Jim
When I first got my LP-Pan and read the manual (doesn't everyone do
this?), I found it strange that the audio outputs had the ability to
lift grounds (apparently to reduce noise/ground-loop issues). I
guess I must be doing something right as I did not encounter any hum
or noise issues with
I've used my KX3 with the Tiny Python Panadapter I
built per the April QST, using an iMic USB audio
card on the I/Q outputs, and it worked fine --
within the limits of the design and the Raspberry
Pi I used. Nowhere near as nice as the PX3 I'm
using now when I operate the KX3:-)
73, Phil
Greetings and happy holidays Elecraft enthusiasts.
I have been putting together a portable contest/dx station using a KX3/KXPA100
combo. What a wonderful little setup. As part of my testing process, I have
setup a laptop computer for rig control. This works great in alot of respects,
Cat
Chris.
I have switched over to Win4K3. It's a total package with spectrum
display, IP connection to HRD, works well with CWskimmer, and now there
is spotting and a log program, albeit the logging function is still
being worked on. It seems to run much more smoothly than NaP3 with LP
[ct...@ewnetinc.com]
Sent: Saturday, December 20, 2014 11:13 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Elecraft KX3 IQ out and spectral display pograms
Greetings and happy holidays Elecraft enthusiasts.
I have been putting together a portable contest/dx station using a KX3/KXPA100
: [Elecraft] Elecraft KX3 IQ out and spectral display pograms
Chris.
I have switched over to Win4K3. It's a total package with spectrum
display, IP connection to HRD, works well with CWskimmer, and now there
is spotting and a log program, albeit the logging function is still
being worked
could be
relied upon, but I've seen otherwise.
Good luck.
73, Terry, WB4JFI
-Original Message-
From: Chris Tate - N6WM
Sent: Saturday, December 20, 2014 2:13 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Elecraft KX3 IQ out and spectral display pograms
Greetings and happy
...@comcast.net]
Sent: Saturday, December 20, 2014 12:42 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Elecraft KX3 IQ out and spectral display pograms
Chris.
I have switched over to Win4K3. It's a total package with spectrum
display, IP connection to HRD, works well with CWskimmer
On Sat,12/20/2014 12:42 PM, Barry LaZar wrote:
From reading your post I suggest that you get a Radio Shack ground
loop isolator.
A far better suggestion for both of you. Download and study this
tutorial. Anyone who uses or suggests a ground loop isolator has some
severe misunderstandings of
Perhaps the problem is due to noise on the computer ground. The PX3 has
differential amplifiers at the I/Q inputs. For the computer-based
panadapter, it might help to connect the grounds of the computer audio
input connectors to the KX3 ground with a short, large-diameter wire.
Another
On Sat,12/20/2014 4:57 PM, Alan wrote:
Perhaps the problem is due to noise on the computer ground. The PX3
has differential amplifiers at the I/Q inputs.
Why? It's an unbalanced interface!
For the computer-based panadapter, it might help to connect the
grounds of the computer audio input
Why? It's an unbalanced interface!
Yes, that's the problem. The power supply in the computer probably has
bypass/filter capacitors between the line and the chassis. So with an
unbalanced connection to the KX3, there will be 60 Hz (and harmonics) AC
current flowing in the cable shields.
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