Using Spectrum Lab with my on motherboard sound card shows a
persistent artefact at 12 KHz with sometimes one either side of it. This
doesn't appear when listening to typical speech on SSB but tuning to CW
shows it, the signals either side of the 12 KHz one are +/- the tone of
the CW signal,
I've been sharing my findings with M1PAF and we have now both put a RC
Low Pass Filter across the headphone transducer of our Heil headsets but
only in the right headphone so that the left one can still hear the
artifacts for comparison.
I have chosen a LPF with values of R=260 Ohms C=0.2uF
Hi Julian et al.,
I might have found a cheap and easy solution providing a full remote access
to the K3 via a local network and/or via the internet. I tested a wireless
LAN router from Asus (WL500g Premium) at the last weekend. Using a new OS
(Open-WRT with X-WRT) at that router will allow you
Hi Sascha,
For audio there's SKYPE and IP-Sound. Take a look at
http://forums.ham-radio.ch/forumdisplay.php?f=46 for a lot of remote radio
discussions.
I'm currently working on a remote EME system with a nice 10m dish (not
mine), the whole station will be controlled using HRD and my new
The 12 KHz artifact appears to be the audio output DAC clock, with the
demodulated audio forming upper and lower sidebands with it. It's down
considerably, but still is apparently causing issues with those who have
good high frequency hearing response.
The K3's audio seems to have way too
Actually the AGC works quite well, and it is post AGC mod model. I am
merely taking advantage of the fact that the AGC is configurable. I
do not have to make the changes, but due to the radio's flexibility,
I am able to make the changes, and that helps with weak signals.
On the other hand,
I get the daily digest. I am switching to individual posts because I find
myself reading fewer posts. The ones I skip are:
a) Ones that should go to Elecraft Support/Sales/Parts
b) Ones that relate to a topic fully covered in the manual
c) Ones that are covered on the Elecraft website
d)
I agree. One thing that would help in the digest version would be to number
the messages, as many other listserve's do, so that you can quickly go to
the ones you may be interested in instead of having to go through the whole
darn 30+ pages of irrelevant stuff (including the repetitions of
Hi Elecraft,
I have a K3 on order so I'd like to know whether you've been able to
schedule work to begin on Synchronous AM yet please? Just curious and keen
to see this feature implemented.
Thanks,
Shane
VK5ABQ
--
View this message in context:
Hey All,
If someone has successfully used a T-32 mic with a K3, please
contact me off list. I have one and just can't seem to get it going. I
am not that technical but this should not be that hard to do. For those
that don't know, a T-32 is a WWII vintage candlestick mic with three
wires.
Dave,
I certainly agree.
The Elecraft list is often 50 plus topics, most of which are absolute nonsense.
I for one wish it could be limited to dealing with operation problems with use
of the Elecraft products and not ancilliary equipment usage or hookups, i.e.
bandscopes, linear amps.,etc.
The 12 KHz artifact appears to be the audio output DAC clock,
with the demodulated audio forming upper and lower sidebands
with it. It's down considerably, but still is apparently
causing issues with those who have good high frequency hearing
response.
I'm confused ... my measurements
I agree that it's around 70 dB below the normal signal level.
The original poster believes it is the source of his problem.
My ears are not good enough to hear 12 KHz.
Jack K8ZOA
Joe Subich, W4TV wrote:
The 12 KHz artifact appears to be the audio output DAC clock,
with the demodulated audio
Hi,
I've noticed that my power output on 40 meters LSB is a lot higher than
expected. I get four to five bars or more on the peaks in the ALC mode. I
even got a high current reading last night and I then turned the power back
from 12 watts to 10. I get 4 to five bars even at five watts.
Most of these add ons I have no interest in.
BUT I am glad to know that there are there.
Some day I may want to know how to hook up one.
These add ons are an extention of ELECRAFT.
The delete key is used often.
73, Ty, W1TF, K3 $696
___
Jack Smith-6 wrote:
I agree that it's around 70 dB below the normal signal level.
The original poster believes it is the source of his problem.
My ears are not good enough to hear 12 KHz.
My hearing is good to 18Khz and I don't hear it on my K3. I see it clearly
on the spectrum
subject lines could be standardized or grouped . K3 or K2X
ie: K3 wish list , ( includes redesigning the K3 because it
works fine now )
K3 filters
K3 alc
that would help those who can only see the subject line
bill
At 09:42 AM 9/9/2008, Ralph Tyrrell
I think this plot explains why.
http://n2.nabble.com/file/n1078026/capt0809091710.jpg capt0809091710.jpg
It is a sequence from my GB3RAL 70MHz beacon sending JT65B. The high
frequency alias is quite clear. It is inverted which might be why it sounds
so strange. So for example 900Hz is
The amplitude appears fairly consistent. I think a simple low pass filter
is
all that is needed and a cut off of maybe 7 kHz would be appropriate.
Maybe
even lower as this 4kHz ESSB plot with the FM filter shows, the audio
response is limited above 2.5kHz.
Mike:
You may want to revisit that
Hey All,
Thank you to those that replied. It seems that I will have to
replace the carbon element with an electret. I got a bag of these from
Mouser to redo some D-104's so I'll give one of them a try. Thanks
again. 73.
In His service,
Jim Cundiff KB3GFC
K3 1264
You are right, I had set the width as high as I could, which was 4kHz. I
didn't move the centre frequency to 2kHz. I have just done it again but
this time with the centre frequency set to 2kHz and I see 4kHz width. The
highest I can get it up to is 300Hz-4.2kHz.
But, I found something else. I
On Mon, 8 Sep 2008 15:30:35 -0400, hank k8dd wrote:
It would be good to be able to adjust WIDTH during transmit, too.
YES! And the RX Antenna switch.
73,
Jim K9YC
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a
And speakers (via PF keys):
http://n2.nabble.com/K3:-PF1-ends-transmit-in-DATA-A-mode-td675108.html
Leigh/WA5ZNU
On Mon, 8 Sep 2008 15:30:35 -0400, hank k8dd wrote:
It would be good to be able to adjust WIDTH during transmit, too.
YES! And the RX Antenna switch.
73,
Jim K9YC
What I do believe is that there is an artifact or artifacts and I
can hear them.
I put the LC filter as mentioned before on my headset and the so called
artifacts are gone.
It's very simple, I can't hear them with my ears if i have the LC filter
in irrespective of expensive equipment dB
I fixed this in my headphones with an LC filter that takes the 12Khz
trash down an additional 12dB
I can easily hear the 12Khz stuff on good headphones at normal operating
levels, even though it's at 60 to 70dB down on the desired audio.
Because it's non-harmonically related it's impact on the
Just for those that are following this thread, Wayne said
This is on my firmware list, but I can't put a date on it. Quite a
list of requests/improvements now!
So he's aware of our wish and has sad he will do it sometime. I think
we all understand about his priorities. I don't see the point
Awesome. That is good enough for me. It will get here, when it gets
here. Thanks.
David Wilburn
K4DGW
l
David Ferrington, M0XDF wrote:
Just for those that are following this thread, Wayne said
This is on my firmware list, but I can't put a date on it. Quite a list
of
Those who absolutely want to use the K3 in a bug mode for CW might try
this-- at your own risk.
Single lever paddles only.
1) connect paddle dit side to the keyer jack dit side
2) connect paddle dash side to key jack
3) ground to paddle common.
Dual lever paddles can short 1) and 2) together
For those who want the bug mode, plug your bug into the key jack, select the cw
mode and get with it. It works for me!
Willis 'Cookie' Cooke
K5EWJ
--- On Tue, 9/9/08, alsopb [EMAIL PROTECTED] wrote:
From: alsopb [EMAIL PROTECTED]
Subject: [Elecraft] K3 bug mode there (sort of)?
To:
And the K1s and KX1s?
I agree with those who advocate keeping threads on list, since there are
always more interested people out there with the same question or who may
not have thought to ask but for whom the answer is of interest.
Toward that end, there are a lot of on-going threads here,
I have a factory built K3. I have been downloading firmware updates
when ever a new one comes out, mostly without issues. Occasionally I
would have to do the upload again to get the DSP1 upload to work.
Recently after uploading MCU 2.38, FPF .02 and DSP1 1.9 I have a problem.
When I bring
I solved my problem.
I kept uploading until the DSP1 took, must have taken 10 times to get it
done, weird.
Rich - N5ZC
Richard Thorne wrote:
I have a factory built K3. I have been downloading firmware updates
when ever a new one comes out, mostly without issues. Occasionally I
would have
Ron:
Ok, here's a K2 question.
My K2 tuning knob intermittently thumps, both as an audible sound,
and as a mechanical bump that I can feel in my fingertips as I rotate
the knob. It does not always do it at the same knob position. It is
nearly impossible to replicate with consistency, but it
On Tue, 09 Sep 2008 10:37:53 -0500, Bill NY9H [EMAIL PROTECTED] wrote:
subject lines could be standardized or grouped . K3 or K2X
ie: K3 wish list , ( includes redesigning the K3 because it
works fine now )
K3 filters
K3 alc
that would help those who can
K3 MCU firmware rev. 2.38 (and DSP firmware rev 1.90) is now officially
a regular production release. We encourage all K3 owners to download
this revision.
Many important changes and additions have been made since the last
production release (2.02). Here are some highlights:
* Complete
Ron,
Of course, the K3 is the latest rave. Be assured that those KX1ers are still
alive and well. The challenge for me is to deploy the best and most efficient
antenna for portable (or near portable) work with the best operating techniques
I can devise. The KX1 is about as good as it gets
You might also like reading via Nabble, on the web.
http://n2.nabble.com/Elecraft-f365791.html
Or visit that page and click on Forum Feeds at the bottom and drag the
Topics one to your Live Bookmarks in Firefox 3 or Internet Explorer 7
and get one-click access to the list of active topics.
During my short time with the list (K2 5982 / K3 766) it has been a
technical list. These folks are not your average hams. They will dig
into a piece of equipment and understand what makes it tick. It is an
amazing think tank of information that I enjoy reading everyday.
That being said, I
Still have K2, 5982 on the table. Need to get back and play with it.
I want to setup a vertical loop as a second antenna, so I can run
both the K2 and K3 at the same time. But first I need to build a new
launcher. Wrist-rocket bit the dust.
Picked up a o'scope earlier in the summer, and
Wow. Interesting! You can hear it and feel it. Have you tried a different
knob? The Elecraft supplied knob has large brass weight built in. I wonder
if the weight is loose and moving somehow.
Ron AC7AC
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
This is great procedure, but the huge failing comes from
the significantly poor use of the subject line, very often
too vague and even misleading about the actual content of
the message FOR EXAMPLE: K3 Topics but at least
that sez K3. Until the engineers among us learn to use
the
Charles,
Sorry, but engineers and good, clear, concise writing do not typically
run together.
Way back in engineering school, I had a 'Western Civilization class
professor who was bold enough to tell his sophomore class of EE students
that *his* class was the most important in the curriculum.
When I've tried this in the past I found that it has a very different
feel than a mechanical semi-automatic key paddle (bug). I found it
basically impossible to send good-sounding code. YMMV
Al N1AL
On Tue, 2008-09-09 at 15:08, alsopb wrote:
Those who absolutely want to use the K3 in a bug
Next stupid question,
What is the output level of the IF out on the transverter?
Do I have to turn on something to get it to activate?
I am trying to connect a K3 Softrock V6.2 to use as a panadapter and cannot see
any output on my scope (techtronics 475) from the IF output connector on the K3.
Subject: [Elecraft] K3 - IF out
Next stupid question,
What is the output level of the IF out on the transverter KXV3 option?
Do I have to turn on something to get it to activate?
I am trying to connect a K3 Softrock V6.2 to use as a panadapter and cannot
see any output on my scope (techtronics
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