I
too have had noise peaks pass from left to right across the screen of the
P3 leaving a diagonal waterfall trace. First a small one, then one at +40 dB
above the reference level then another small
one, all moving slowly across the screen. Nothing is heard on the K3 and occurs
even when the
Now that is great news - thank you Wayne, et.al. for listening to those of us
who wanted to do that and going the extra few miles to make that possible.
73 de M0XDF (K3 #174, P3 #108, KX3 #???)
--
A successful man is one who makes more money than a wife can spend. A
successful woman is one who
Wayne Burdick wrote:
Joe Subich, W4TV wrote:
Remember, IMD is driven by total *peak* signal level. The peak signal
level is not simply the scalar sum of the levels ... it is a vector
sum as the individual signals add in phase.
And those peaks could be slightly modulating the AGC loop.
Joe,
You may recall that the subject of K3 Mush was discussed on the K3
Contesters Forum earlier this year, and that I suggested that the Group
Delay Variations introduced by the narrower bandwidth roofing filters might
well be the cause of the Mush problem. The recordings of K3's audio sent
wayne burdick wrote
Hi all,
The K3's hardware AGC time constant is a compromise between recovery
time and IMD due to modulation of the loop. C238, on the bottom of the
RF board near the front, sets this time constant.
We did a little experiment today . . .
I think it would be
Hi Wayne,
I'd be happy to try the modification. I can do it with one K3 and not
with the other.
For reference, here are my configurations and general operation settings
when in C6.
AF GAIN = high. (I'm thinking maybe to set it low)
AF LIM 20
AGC DCY SOFT
AGC HLD 0.30
AGC PLS NOR
AGC SLP 0
AGC THR
Just for comparison and I don't have the K3 that we used unpacked yet so
I don't know the agc settings.
I use AFX all the time. ATT was almost never engaged. I never use RX
equalization. RF gain was used mostly on the low bands.
When I had Bose headphones I noticed that they were quite
Nice idea, Barry, but probably continuously flashing something on the
display should be an easier solution from a firmware mod point of view.
Maybe flashing the 'F' of the AGC on the display, or something similar.
That should be straightforward and doesn't require any physical
modification to
Hi Gents,
I have an early K3 - serial # around 400. Do I need to swap the entire
DSP board out for a Rev D board or is the little mod kit *K3DSPLPF
*that is sold for $40 going to do it for me?
--
Cheers,
Nick NT1A
__
Elecraft
Nick,
The little K3DSPLPF will take care of the high frequency part of the
spectrum just the same as the DSP Board swap, BUT, it will not extend
the low frequency response.
So, the answer depends on what you want to accomplish - if you want both
the high and low frequency changes in your K3,
Hello Nick,
As you will take the trouble to open up the K3 front panel, I suggest you swap
the entire DSP board for a peaceful mind.
Luckily, my hearing is still very good up to 15Khz. To me, it is day and night
difference after the swap. Judging from your serial no, there are quite a
Thank you so much Don. Your answer clarified everything about this
upgrade for me. I will swap out the entire board.
Cheers,
Nick NT1A
On 12/5/2011 9:20 AM, Don Wilhelm wrote:
Nick,
The little K3DSPLPF will take care of the high frequency part of the
spectrum just the same as the DSP
One of the reasons I switched allegiance from Yaesu and Ten-Tec (I was a
dedicated FT-1000D user for ten years and then an early and initially
enthusiastic Orion and Orion II user but lost interest when it became obvious
that both Yaesu and TT could care less about feedback from their users and
I really can't agree with the mush comment. I've just returned from ZF1A
where we put almost 8000 Qs in the log over the CQWW CW weekend. I took my
K3 and was able to evaluate it against the station's existing TS-850 since
we were M/S and rotated positions. In my opinion, the 850 WAS mushy and
I picked up a Ballantine Labs 300E VTVM at a yard sale recently, in sort of
working condition.
I have been unable to track down a manual for it ... struck out at the Boat
Anchor Manual
Archive. Ballantine will sell me a manual for $95, which seems excessive
since I paid $7
for the VTVM(!).
I'm
William Hein-2 wrote
WOW I was bugging TT to add this to the Orion II 7 years ago to no avail)
while the Orion's software/hardware remains static and . . .
I likewise applaud Elecraft's responsive to this and every other issue that
has come to light. But in terms of the static comment, I
Off topic but I hope there are a few Astron power supply experts out there in
the Elecraft community.
I have two Astron RS-35M power supplies. I use them both. One powers my K3
and the other powers a lot of little things on the bench plus my back up rig,
an Icom 756 Pro III. So, both are
K5WA wrote
In this case, K6AM feels like his hearing is
limited to a frequency range of 6-7K while mine is still near 20K. Maybe
that is part of the puzzle.
Not likely unless you can hear the 12k artifact (solved with the LPF upgrade
for the DSP). Which reminds me...someone previously
On 12/4/2011 1:08 PM, Fred Jensen wrote:
A group of very narrow noise pulses, not terribly strong, run
through the display at maybe 5 or so KHz/sec, usually from high to low
frequency. I might have heard them once or twice, generally there's no
audio indication. I disconnect my antennas
Hi all,I am looking for an used / very good condx Elecraft xv50 with cristal
heater.73 Stefano IZ3KGJ
mail to visenta9 AT inwind DOT it
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
One of the interesting things about having a panadaptor is being able to
see rather than just hear what's going on in a small spectral region.
I see all kinds of things racing across the screen, noise-floor bumps,
etc. But, now that I can see, I'd never willingly give it up. I can find
holes in
Hi all,
As a mere mortal and a relatively new K3 owner, I would find it really
eductational if someone could post an audio clip of what's being discussed.
Thanks and 73,
Don NA6Z
__
Elecraft mailing list
Home:
I recently ordered a high-performance Kuhne TR 144 H +40 2m transverter for use
with my K3 in an EME station I am building at my new Glade Park CO QTH. Kuhne
recommended that I run their transverter at 14-MHz in lieu of 28-MHz due to
superior K3 rx phase noise at the lower frequency. True?
Better still -- how about a comparison of audio clips between the K3 and a
competing transceiver that is seemingly unaffected by the problem? If not
from this past 160m contest, then perhaps from the forthcoming Stew Perry or
CQ 160m contests.
Paul, W9AC
- Original Message -
From:
Jeapordy contestant #1, I'll take K3 AGC for $2,000 Alex.
Alex Trebec - ANSWER- Mush in K3 audio, with multiple S3 cw signals
Jeapordy contestant #1 - What effect does an active HAGC have on a roofer's
Output Odd Order
Intercepts (in and outside of the filter's passband), and does this
Santa Claus just rang the front door bell. He was disguised wearing a brown
suit. He delivered KPA500 #576.
K2UF is going high power.
Joe K2UF
No trees were harmed in the sending of this e-mail; however, many electrons
were inconvenienced.
I have to agree. It's interesting to see how what I formerly thought was 'just
QRN' is
sometimes a localized (in frequency) burst of RF. There are all kinds of
phenomena that I
had no idea existed which have become visible. It's also helpful to identify
the stations
with key clicks -- maybe
The only time I heard mush on the K3 was when we had worked down the
pileup and only had very low strength guys all calling on the same
frequency (the packet/reverse beacon spotting phenomenon).
Multiple low level signals close in frequency is EXACTLY the situation
that I and at least
I don't think 160m is the place to look for the problem. The upcoming
10m contest would be a much better choice.
Dave AB7E
On 12/5/2011 10:06 AM, Paul Christensen wrote:
Better still -- how about a comparison of audio clips between the K3 and a
competing transceiver that is seemingly
David,
Does turning AGC off (but leaving RF GAIN at max) ever un-blur the
signals?
Wayne
N6KR
On Dec 5, 2011, at 9:39 AM, David Gilbert wrote:
The only time I heard mush on the K3 was when we had worked down the
pileup and only had very low strength guys all calling on the same
I always likened Wayne to Super Chicken: Faster than a speeding pullet.
Gary VE1RGB
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Rick Stealey
Sent: December 5, 2011 1:10 PM
To: elecraft@mailman.qth.net
Subject:
To be honest, I've never tried that very often. The one or two times I
have done so (AGC off, RF Gain at max) have not been pleasant
experiences. The only time I get a pileup of weak signals is working
Europe from here in Arizona, and that means I have to point through some
very loud
Fred's configuration struck me as quite surprising. With DSP at
5-700, his K3 would be using the 1000 kHz roofing filter, so there
would be a substantial frequency range blocked only by the DSP. And
ATT on -- why would this be attractive? I'd think to hear weak
signals close together, you'd
I too am watching the Mush discussion and possible fixes,
if any, with great interest.
I think there is a lot of merit to Eric's assertion of
skimmer spots causing everybody to call on the same exact
zero beat frequency on CW. This just adds to the problem.
So recently I have been toying with
I wonder if the blurring or mush problem is as severe when using Diversity
Reception which is more likely on TB than on the HF bands where the great
directivity of the Yagi seems to null the benefits of diversity reception.
So the Stew Perry may not be such a good test to use.
This is a most
Try fldigi. It works with pskreporter for digimode spots.
It has beam headings in it, and extensive macro facilities.
I have a macro which rotates my antenna and another which sets my steppir,
as I don't use the auto-follow feature.
fldigi runs on Win/Lin/Mac.
Leigh/WA5ZNU
--
View this
Multiple low level signals close in frequency is EXACTLY the situation
that I and at least several others are concerned about. I don't notice
Curiousity is getting the best of me...what transceiver(s) *don't* exhibit this
problem and allow
individual discernment of multiple weak signals near
I wish I had a 700 Hz filter because I like the DSP in the 400-700
region. My reason for this is that when a narrower filter is in use, it
tends to have many signals with about the same tone. At least for my
hearing, I need and like to have a spectra of audio signals. Sometimes I
get the lower
Should we call ordering to have a cap or two sent out?
Fred Cady
fcady at ieee dot org
-Original Message-
From: elecraft-boun...@mailman.qth.net [mailto:elecraft-
boun...@mailman.qth.net] On Behalf Of Wayne Burdick
Sent: Sunday, December 04, 2011 6:59 PM
To: Elecraft Reflector
Is the blurring problem less severe when using a 300 Hz tone which is my
favourite? At 300Hz the differences in audio frequency seem to be more
noticeable. This is personal but I find the tone less harsh and in my case
the RX equalization is set to favour a narrow band of frequencies around 300
On 12/5/2011 10:38 AM, David Gilbert wrote:
If I get the chance during the upcoming ARRL 10m contest I'll give it
another try. I'll also try to record the entire contest to see if I can
come up with a decent sound clip.
That would be really cool, David. My K3 replaced my TS-850 [which I
It's always a good idea to present the lowest-level of RF energy to the
receiver input. If you can hear the band noise, any more gain at the RF is
wasted and can result in various issues with strong signals near or in the
passband. On the lower HF bands, the band noise is usually perfectly audible
Did you try chopping all the lows and boosting the highs in the TX
equalizer? It may not be broadcast quality audio then, but that provides a
lot more 'punch' in the audio, which helps in DXing but not so much for the
local chat nets (then turn on ESSB too). Depending on your voice
No. We don't have a large stock at the factory, as we keep them at our
contract manufacturing site south of here.
I'll post here when we get some in here.
73, Eric
www.elecraft.com
On 12/5/2011 11:50 AM, Cady, Fred wrote:
Should we call ordering to have a cap or two sent out?
Fred Cady
Maybe I'm just a dinosaur waiting for the next asteroid, but as a Novice I
learned it was bad practice ever to transmit on top of another station for
any reason and, when listening for calls, always tune up and down a bit from
the calling frequency.
It's good to see that practice still produces
Ron:
Maybe I'm just a dinosaur waiting for the next asteroid, but
as a Novice I learned it was bad practice ever to transmit on
top of another station for any reason and, when listening for
calls, always tune up and down a bit from the calling frequency.
Its the cluster/Skimmer
Prior to cluster and RBN we would just be listening to band noise and no
callers.. :)
Mike W0MU
W0MU-1 CC Cluster w0mu.net
On 12/5/2011 4:05 PM, Luis V. Romero wrote:
Ron:
Maybe I'm just a dinosaur waiting for the next asteroid, but
as a Novice I learned it was bad practice ever
wayne burdick wrote
We're planning to allow the ATU and transverter to both be installed at
the same time.
73,
Wayne
I guess my quoting didn't work the first round...
In any event, That is great news on the 2m and tuner in the same box. Now I
want one even more! I would be curious
Does anyone have a clear recording of this situation using a receiver
that *doesn't* have trouble separating the signals? Better yet, a
recording made of both the K3 and this other receiver at the same
time. That would really help.
tnx
Wayne
N6KR
On Dec 4, 2011, at 6:42 PM, David Gilbert
Rick:
Did you try chopping all the lows and boosting the highs in
the TX equalizer? It may not be broadcast quality audio
then, but that provides a lot more 'punch' in the audio,
which helps in DXing but not so much for the local chat nets
(then turn on ESSB too). Depending on your
Lu, Rick and others interested ---
Your question seems to relate to SSB operation - as far as I know, the
mush problems that have been reported are for CW signals. It may be
that many SSB signals of similar levels will create a similar effect,
but when one adds the passband, (hi-cut, lo-cut)
Not in my experience, Mike.
I did a fair bit of DX-chasing and contesting in the 60's and, on contest
days, the bands were wall-to-wall signals. True, the scores weren't as high
as today, but we were logging with pencil and paper can actually talking or
using the key to transmit and our ears to
I'm not saying that everyone should do this, but I still prefer to seek
out contacts the
old-fashioned way. While it's possible to get DXCC during a contest,
I'd rather have
the chance to make some effort at communicating with the DX operator,
provided he
was willing.
The one that really
Wayne,
For those of us ordering the cap through Mouser or DigiKey, can you reply
with the SMD/SMT cap dimension code (e.g., 0603, 1608, etc.)
Tnx!
Paul, W9AC
- Original Message -
From: Wayne Burdick n...@elecraft.com
To: Elecraft Reflector elecraft@mailman.qth.net
Sent: Sunday,
I have an Elecraft K3/10 getting great reception on AM using attic dipole
on 7.290 mHz. Does this mode transmit well for QRP? (I use digital modes
and do not own a mic.)
Thanks in advance.
--
Frank KD8FIP
__
Elecraft mailing list
Home:
Got it. Thank you. De WA6NHC
-Original Message-
From: Don Wilhelm [mailto:w3...@embarqmail.com]
Sent: Monday, December 05, 2011 4:09 PM
To: lrom...@ij.net
Cc: 'Rick Bates'; 'Elecraft'
Subject: Re: [Elecraft] Mush and Manufacturers
Lu, Rick and others interested ---
Your question
0805.
tnx
Wayne
On Dec 5, 2011, at 4:31 PM, Paul Christensen wrote:
Wayne,
For those of us ordering the cap through Mouser or DigiKey, can you
reply
with the SMD/SMT cap dimension code (e.g., 0603, 1608, etc.)
Tnx!
Paul, W9AC
- Original Message -
From: Wayne Burdick
My wife is asking for the timeframe in which the KAT500 tuner will be available
for ordering if that is known. I'm suspecting she's planning on that being my
Christmas present this year (even if it won't arrive in time to put under the
tree I'm sure.)
Jim - W0EB
Fred,
I am not certain whether your question is serious or in jest.
First, an AM station on 7.290 kHz is a commercial; broadcast station,
and likely has no reception capability - so why would one want to
transmit in AM on that frequency with any transceiver.
Yes, the K3 can transmit AM *if*
Hi,
Clearly, audio clips are needed if Elecraft is going to have any chance of
getting to the bottom of this. If this problem is real, somebody ought to be
able to produce objective evidence of it with comparable evidence of other
receivers not having the problem.
AB2TC - Knut
wayne burdick
Jim,
May I suggest that she gift you with a card that says KAT500 when
available.
I certainly don't know any details, but the card should be able to be
placed in a conspicuous place under the Christmas Tree.
Yes, the real thing is not likely to be able to be placed under anyone's
Christmas
Actually, it's certainly worth trying. Not a Vik II or 500, but for goodness
sake, try it out. Look also for local weekend morning round tables on 75 if you
can get any kind of an antenna there. The power of the K3/10 isn't all that
different from many mobile rigs in the 50s/60s, and all the
http://www.youtube.com/watch?v=V-PTEKc3fnIfeature=uploademail
The KPA500 will be reviewed in the February 2012 QST.
Zack
N8FNR
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
Now that 10 m AM is back, I have started firing up my Globe King 500 on
that band/mode. AM is truly not a QRP mode. But, if you want to try, go
for it. As has been pointed out, only half the power goes into the AM
sidebands. The carrier is discarded, so offers no communications ROI for
the power
7290 KHz is used for amateur AM activity. As for qrp AM, check out
smallwonderlabs.com for the retro-40 that was added to the product line.
Must be a fair number of hams that think QRP AM is a good thing!
73 - Mike WA8BXN
---Original Message---
From: Don Wilhelm
Date:
Back in my college days my '47 Studebaker was equipped with a Lysco 10 meter
transmitter and the ubiquitous Gonset converter feeding my car AM radio for
receive. The antenna was an 8' whip mounted on the rear fender ('Highway
Patrol' style).
The Lysco put out perhaps 12 watts at about 80%
I Love it! A sense of humor!
Regarding SuperChicken, You know the job was dangerous when
you took it was always his slogan when handed the
supersauce from Fred.
Fits Wayne *AND* Eric!
-lu-W4LT-
Message: 8
Date: Mon, 05 Dec 2011 14:31:42 -0400
From: gary bartlett
On 12/5/2011 8:03 PM, Lu Romero wrote:
Regarding SuperChicken, You know the job was dangerous when
you took it was always his slogan when handed the
supersauce from Fred.
and I always objected to the use of Fred in this context. Bassett
Hounds. Flintstones. I am s tired of this
I think Mr. Harper has hit the nail squarely on the head
with this comment:
I think our expectations of the K3 are based largely on
what we migrated to the K3 from.
Its the same expectation that I have for transmit audio
punch. It took me six months to feel comfortable with my
audio settings on
Hi all,
We originally planned to include the KX3's battery holders (8 AA) and
associated hardware with the internal NiMH charger option. The idea
was that anyone who needed the batteries would also want the charger.
However, the KX3 will put out more power from higher-voltage cells
, version of virus signature
database 6686 (20111205) __
The message was checked by ESET NOD32 Antivirus.
http://www.eset.com
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http
71 matches
Mail list logo
