Beware...
Initially I installed just one felt washer. After a short time I
noticed the tuning knob was binding against the plastic panel.
This can cause scratching of the surface.
I put the other washer in place and that gave sufficient spacing,
however when the knob was turned it made a rubbing
Bud:
I've seen the advice, and it's all excellent, but for someone new to
the art, it might still sound just a bit intimidating (remember to do
this, don't forget to do that), so I'll offer my 2 cents just to try
and make it a bit worse!
Remember that it's only mysterious until you've
Pleased to work a few other K3s in the ARRL DX contest. I was very
surprised after answering VE3EY's 40m CQ that he came back telling me
that my K3 sounded nice! Thank you Nick! Great Elecraft commaradie...
The K3 was superb during the contest especially on 40m with 300 Hz
DSP. I am still
I just had what might be a nice idea for those, who like myself, feel
that the K3 could do with better speech processing.
It might be an idea to allow routing the the front or rear panel
microphone input, after the microphone gain adjustment/control to the
LINE OUT socket and route LINE IN
At 04:28:15 EST on Mon 18 Feb 2008, Toby Deinhardt (DJ7MGQ) wrote ..
... allow routing the front or rear panel microphone input, after the
microphone gain adjustment/control to the LINE OUT socket and route LINE IN
to the normal SSB processing. This could allow one to add an external stage
of
I would put it in the microphone lead.
The most successful method I have come across for improving readability of
signals when SSB is not getting through is to use CW. I would like to be
able to use my morse key in SSB mode without doing anything except pressing
the key. I know I can do this
BTW, what exactly do you envision this black box doing? Is it
implemented in hardware or in software? Might it be better to implement it
within the K3's firmware?
No real idea (yet). Think of it something experimental under the end
users control/development.
vy 73 de toby
While the figures are excellent, I suspect Elecraft will want to do better.
A dynamic range of 101 dB at 2kHz is remarkable.
I am surprised a crystal filter can take the power for a 140 dB blocking
dynamic range. The post mixer amplifier must have been very difficult to
design as I recon it
I wonder if it is physically possible to do anything about the far out
dynamic range beyond 10kHz which is a mere 104 dB.
Take a look at http://www.xs4all.nl/~martein/pa3ake/hmode/:
This is a quote from the conclusion:
It turns out to be quite possible to construct a frontend with a
Hi Bud,
Worry only if you are blind. The fact that you got your order completed
okay tells me that you should be alright. I hadn't wound torroids
before, but the elecraft documentation makes it a simple process.
Dave
VK2NA
From: [EMAIL PROTECTED]
Subject: [Elecraft] K1
To:
My K3 #145 was used casually in ARRL DX this weekend. One thing that really
impressed me was when an extremely strong carrier appeared on top of K1TTT
just as I was about to call - and stayed there. I turned on the manual notch
and tuned it onto the carrier and lo and behold K1TTT re-appeared and
Ah, in the true ham spirit! :) Then for now I'd suggest just
skipping the K3's mic gain stage.
The mic gain stage gives you an easy front panel control and the line
out a defined level for the input of the black box was my thinking...
I thought it was worth floating the idea - maybe
Hi Brett,
Why not just run the mic into the box then the box into the radio and
use the mic gain to match the output of the box to the radio?
One reason would be that one wants use the the K3's TX equalizer
before doing any external processing. It would depend on what's
possible, and how
My K3 was on 40M and for 6 QSOs on 10M from K1RX. We initially had
an interstation interference problem with the 80M station. It was
causing pops and strange behavior with the AGC. We tried to manage
it with antenna orientation and judicious frequency use, but it
didn't seem to help. I
Hi Toby,
The 120db dynamic range is possible with both signals in the passband IF
everything which follows the hybrid crystal filter is very robust and its
noise figure is low, a low noise figure to keep the gain ahead of the filter
as low as possible of course.
My QT crystals are to be
I've had the same thought. I assume that eventually we'll have some software
support with a nice GUI to set/save EQ settings on a PC. But perhaps
recruiting M1-M4 buttons to somehow save/restore 4 RX EQ and 4 TX EQ
settings would be really nice.
73,
Barry N1EU
WB6MND wrote:
I'm a new K3
K3#247 kit arrived 2/13 and on air2/14. top of the
line. thanks elecraft Mark N1rfb
k2 6000 series
k3 247
pro 3
Never miss a thing. Make Yahoo your home page.
http://www.yahoo.com/r/hs
k3 #427 arrived 2/13/on air 2/14 top of the line .
thanks elecraft Mark--N1rfb
series 6000
k3 427
pro 3
Be a better friend, newshound, and
know-it-all with Yahoo! Mobile. Try it now.
Since I got my IC-7000 with the IF DSP, I no longer need the sharp 250Hz CW
filter for the 706MKIIG.
Asking $75 which includes shipping anywhere in the US.
Anyone interested, contact me off list please - [EMAIL PROTECTED]
JIm - W0EB
___
Ron D'Eau Claire wrote:
Very early on Wayne called for two felt washers behind the VFO A knob, but
then dropped one as several people reported your experience.
The K3 Assembly manual has called for only ONE washer to be installed
behind
each VFO knob since at least last October (Rev
- Elecraft K2 Ser No (December 2002) incorporating, 2.03d firmware;
- Official Temp Comp PLL Upgrade mod (E850138);
- KSB2 SSB adaptor;
- K102 AUX I/O Module;
- KDSP2 INTERNAL DSP FILTER and REAL-TIME CLOCK;
- K160RX 160M / separate RX antenna option;
- MH2 Elecraft microphone;
includes,
- EC2
The two most common mistakes associated with these coils involve one too
many. Without care, one can wind up with one too many turns on the coil, and
one too many r's in toroid.
Mike / KK5F
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Yes, dropping the second washer was intentional, David. I forgot about that
brief period last year as we were making a number of changes. There was some
discussion back and forth about whether one or two felt washers should be
used, and I was asked to include two in the manual at one time, but
So, whats the deal now, my Rev C (Nov 15, 2007) manual said one felt washer
under the main knob.
The errata sheet that came with it, Rev C-3 Nov 26, 2007 item 5 had me
change that to Two felt washers.
Please advise
73 de M0XDF / K3 #174
On 18/02/2008 14:16, Bill W4ZV [EMAIL PROTECTED] sent:
Hello,
I posted a quick How-To on this Reflector on 2/16 ... and quickly
realized the info probably needed a more-permanent home so K3 folks
could refer to it without having to search for it.
See the original, plus updates and some extra links, at
Ok, so would you advise removing one?
And no problem on ack of mail, didn't expect on.
On 18/02/2008 17:05, Ron D'Eau Claire [EMAIL PROTECTED] sent:
Yes, dropping the second washer was intentional, David. I forgot about that
brief period last year as we were making a number of changes. There
GW0ETF wrote:
My K3 #145 was used casually in ARRL DX this weekend. One thing that
really impressed me was when an extremely strong carrier appeared on top
of K1TTT just as I was about to call - and stayed there. I turned on the
manual notch and tuned it onto the carrier and lo and behold
112 Qs to 55 countries, using my K2 at 5W to a vertical and dipole.
EU was a complete washout - I heard lots of stations but couldn't
work any, either day. But I got all the other official continents,
plus Antarctica! VP6DX on 20/17/15/10 (but they're easy from the
left coast), several new entity
I started out with one felt washer per the manual. But then I was a little
unhappy with the adjustment/drag and added the second felt washer. I am
very happy with the 2nd felt washer in place.
Phil - AD5X
SN308
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Post to:
I'm going to suggest an engineering change to make the fans
noisier so you don't need to look. 8^)
Doug, W6JD
-- Original message --
From: Don Rasmussen [EMAIL PROTECTED]
The receiver is QUIET, even with narrow filter
settings.
You need to LOOK to see if the
I was hoping that Equalization Memories will be
available in the future.
I'm using headset connected to the front of the radio
and studio MIC on the back.
With my set up it is not practical to use K3 EQ.
Mark
--- WB6MND [EMAIL PROTECTED] wrote:
Date: Sun, 17 Feb 2008 20:19:29 -0800 (PST)
Just a thought...
This question caused me to remember a conversation that I had with Lisa
shortly after placing my K3 order last June. I had just completed my XV50
for use with my K2. I immediately thought about building an XV144 for use
with the K3 that I am expecting in the next few weeks.
It's on the list for one set of TX EQ settings for each FP and RP mic
sources. The correct set would come up based on the MIC SEL setting.
73
Greg
AB7R
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of mark roz
Sent: Monday, February 18, 2008 8:11 AM
To:
It's entirely a matter of personal preference, David. It all depends upon
the feel you like. I had two originally, but now have one. Perhaps I'm not
as critical (and I have not had any tendency for the knob to rub on the
bezel). Then again, I still have at best maybe five or six hours of
operating
No Drifting here, Rig hr is Ts 950sdx..
de Wp4o, Ed, Tampa, Fl
- Original Message -
From: Tom Childers, N5GE [EMAIL PROTECTED]
To: Elecraft Reflector elecraft@mailman.qth.net
Sent: Monday, February 18, 2008 4:30 PM
Subject: [Elecraft] Unstable VFO
The Ducie K3 on 21.025 right now
Greetings everyone,
I just ordered my 1st HF transceiver this afternoon. (K3/100-F)
The modes that I'm primarily in are as follows:
SSB
CW
PSK31
AM - listening, not necessarily transmitting
FM - listening only
I've ordered the following roofing filters:
200hz ( primarily for PSK31 and other
The Ducie K3 on 21.025 right now seems to have an unstable VFO, moving on just
about every TX. Could be the op though...
Tom, N5GE - SWOT 3537 - Grid EM12jq
They that can give up essential liberty
to obtain a little temporary safety
deserve neither liberty nor safety.
--Benjamin Franklin 1775
Dear Bud,
Winding the toroids is easy. Tinning the leads is hard, unless you
have a solder pot or some such. That's where the Toroid Guy
[EMAIL PROTECTED] shines. His are beautifully tinned. Saves
you from potential bad solders onto the boards.
Oliver Johns
W6ODJ
On 18 Feb 2008, at
From the K3 FAQs (see http://www.elecraft.com/K3/K3FAQ.htm)
Q: I'm still not clear on the general-coverage (GC) receive option --
if it is indeed optional or available by default in a minimally
configured radio.
The basic radio, as well as the subreceiver, has a full array of
ham-band-only
Lenny,
nice work with your K2. i enjoyed the event with a
K2/100 (that previously enjoyed similar contests QRP
before its 'upgrade'). the low bands especially are
in nice shape, even for modest stations - and I even
worked VP6DX on 15m from the east coast with only a
vertical.
at least one
I have some of the new solder with the non-toxic flux and no lead. I get what
looks like cold joints regardless of the heat applied many tries, same
result. Anyone else get the same? 73Charles [EMAIL PROTECTED] From: [EMAIL
PROTECTED] Subject: Re: [Elecraft] K1 toroid winding Date:
Good job, Chris.
If you do this well at the bottom of the solar cycle,
think what you'll be able to do when things are
better.
73, Bob N6WG
- Original Message -
From: Chris Kantarjiev [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Monday, February 18, 2008 9:28 AM
Subject:
My first attempt with my new K2. Pretty tough from
here in the Black Hole central Illinois. 50 Q's
with 42 country mult's. Worked about 5 hours. Best
was DL1 on 80 and KH6 on 40. Antenna G5RV up about 30
feet. The K2 continues to amaze me.
Also worked VP6DX on 18 MHZ.
73,72
Mike, W9QS
EX:
I'm listening to VP6DX on 21.025 right now, and there doesn't appear to be
any drift at all here. IC706MKIIG with 500Hz filter. They are staying
right solid where I set them in the filter.
W0EB
Beware the man who only has one gun. He probably knows how to use it!
Hi Bill,
You need the KBPF3 filter if the BBC is not broadcasting in or near a
Ham radio band. The BBC generally does not do this.
You also need the KBPF3 if you want to listen to medium wave.
You need the 6kHz filter to listen to AM with good fidelity.
Conclusion: Imho, you will want to
On Mon, 18 Feb 2008 16:37:51 -0500, you wrote:
No Drifting here, Rig hr is Ts 950sdx..
de Wp4o, Ed, Tampa, Fl
[snip] It doesn't drift. It is being moved. It may be the operator moving the
VFO. It's almost as if he is calling CQ and then tuning to the frequency of the
answering station.
Hi Bill,
The standard front end filters are tuned to the Ham bands only. Far
enough outside of our bands the receiver will loose a lot of sensitivity
because of this. To cover the regions used e.g. by broadcasters you need
the KBPF3. This has nothing to do with the roofing filters.
I am feeling pretty good about the numbers Rob Sherwood, NC0B, has come up
with. That is my radio he is testing and so now I know exactly the
specifics of that particular radio, SN 00149. It was a kit radio that I
built, Elecraft checked it out, finished the calibration procedure, returned
it
Charles,
I have tried some of that no-lead solder and found the same thing as
you. It requires a higher soldering iron temperature and does not
conduct heat through itself very well. It is doubly difficult to
de-solder a thru-plated hole that has been soldered with that stuff.
Unless you
Good news indeed about the K3 being at the head of the performance list -
Congrats to the Elecraft folks! Thought I would mention that Rob Sherwood
will be giving a talk tomorrow (Tuesday) nite at the Boulder Amateur Radio
Club. The subject is Measuring Receiver Performance and DSP. I don't
I probably had the fewest contacts, but the location had was nice. We were on
a two week vacation on Kauai. I brought my KX1 and wire antenna. Friday
night and Saturday morning I through the wire over a tree at the edge of the
ocean in front of our condo. We left Saturday afternoon, so I
Yes that is what it does. It will always crust over and have a matte almost
corroded look to it. I've been working with the stuff for a few years now
and there are all sorts of fun issues that you run into with the hotter
solder profiles and making the plastics on your connectors brittle and
Agreed its best done with specific equipment for using this solder. Mainly
you need higher temperatures and slightly larger tips. I noted that the
boards that came with my K1 were all RoHS compliant and so I decided to go
ahead and build the thing lead free.
I used the RoHS solder station we
I originally wrote
I am feeling pretty good about the numbers Rob Sherwood, NC0B, has come up
with. That is my radio he is testing and so now I know exactly the
specifics of that particular radio, SN 00149. SNIP
I received the following private message from NN4X:
I'm curious as to why there
Does the KBPF3 go into the RX module or the main board module? Ie do you
need two if you have the dual receivers? You probably wouldn't need dual RX
out of band but just a wonder I guess the band passes would have to be
on the RX modules or you wouldn't be able to get the two RX modules
I'm a little confused as to what the KBPF3 is
really providing.
Bill - the stock K3 band pass filters will greatly
attenuate signals that are more than 1 megacycle from
a ham band. The KBPF3 will resolve that problem.
Still, the only roofing filter that comes with the
stock K3 is the 2.7 khz
Lately I have really become very interested in AM on both 75/80 and
160 meters and I recently read a review of the K3 stating that it was
a TRUE double sideband AM. Is this true? Any comments, feedback or
thoughts in this regard would be greatly appreciated.
Thanks
After assembling my K3 over the last three days I'm
very impressed with the manual, the fit of the boards
and the construction and fit of the chassis. At this
point, I have not put the radio on the air. ( I'm
waiting until the XYL hits the hay tonight so I can
stay up as late as I want to. - She
I don't operate the two higher frequency WARC bands, but decided to try
out the K2/100 with the KAT100 using my low band sloping Vee. At
18085.66, I have a moderately strong steady carrier that tunes in
jumps rather than smoothly like real signals. My guess is the
jumps are maybe 150 - 200
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
I read somewhere (I believe it was the ARRL Handbook) that you can,
sometimes, find bad components by touching them with your finger while
the circuit is active.
If that's true, then I've found that the U2 (a NE602) and the T2 on the
RF board
Jim - I've noticed the same thing. Didn't know if it was them or me as I've
noticed it before on a few signals! -- Don N4HH K3 #83
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jim Sheldon
Sent: Monday, February 18, 2008 4:56 PM
To: 'Elecraft
Just downloaded the latest my 1st firmware update and all went without a
hitch.
MCU 01.68
DSP1 01.53
Jim
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Please email me off-line
fraz1 at bellsouth.net
73 John
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I'm not on a 2nd floor, but I use 2 wide copper strap.
It comes from a sheet metal shop, which cuts it with a
sheer from the side of a 4' x 8' sheet.
The strap is run along the back of my desk with brass
1/4 x 20 bolts soldered at 12 intervals. I use brass
wing-nuts on the bolts.
73! Ken
We've just posted a new revision of K3 firmware on our web site (both
MCU and DSP). Please see the release notes below.
73,
Wayne
N6KR
* * *
MCU 1.68 and DSP 1.53, 2-17-08
* MIC Source is now saved independently for voice and data modes. For
example, you
could set MAIN:MIC SEL set to
Please use this link for the full story.
http://lists.contesting.com/pipermail/3830/2008-February/150860.html
or for just a quick summary:
Single Op, All Band, QRP
Summary:
Band QSOs DX Countries
---
160:5 5
80: 3827
40: 15459
20: 34278
Poof! As much as K3 owners have been having fun with the new Elecraft
invented mode of CW to RTTY now there is yet another new mode in amateur
radio!
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Bob,
I used my Collins 75A-3 with the 6kc filter to adjust the microphone gain on
AM. AM is definitely double sideband and sounds very good. I have made
several AM contacts on 160,75 and 6 meters. I found that setting the speech
compression to 0 gets the best results using an MH-2 microphone.
HI all:
I am re-doing all my 20 year old connections here in the shack, which
is on the 2nd floor of my house.
Can anyone point me to a resource for the best way to ensure a
proper RF ground from the 2nd floor? I have lots of holes in the
walls going outside (rotor cables, control lines, many
I was able to update to MCU 1.68, but the DSP update failed.
I am using Vista and the usb to serial adapter.
Any thoughts?
Thanks
Al
AD9P
--
View this message in context:
http://www.nabble.com/Update-failed-tp15550818p15550818.html
Sent from the Elecraft mailing list archive at Nabble.com.
I was not going to add to all the one washer or two comments
but
heres my two washers
er, cents worth.
I replied over the weekend, off list, to Barry, N1EU. I had the same
difficulty that he described
an uneven tension on the main tuning knob
through the 360 degree rotation. It was
Hi All,
I just wanted to let everyone know that their K3-on-order is the best ham radio
purchase they have ever made, IMHO. It's well worth the wait, and everything
good that current owners have said about the K3 is true.
I've had # 384 up and running for the past two days, and made lots of
#430 K3/10 kit delivered tonight. Ordered May 25th but I screwed
things up so there was about a week delay. Hope to get the inventory
done tonight and build starting tomorrow. Still had fun with the K2
(not counting using the SoftRock40 on 80/40m at 1 watt) during the
ARRLDX. Even worked the
Hi Al,
Are you using the latest drivers from the Prolific site? I had a
similar problem that I fixed with a driver refresh.
Raj, N2RD
--
Rajiv Dewan, N2RD
[EMAIL PROTECTED]
FN13fc
--
On Feb 18, 2008, at 7:59 PM, AD9P wrote:
I was able to update to MCU 1.68, but the DSP update failed.
I just updated with Utility version 1.1.1.28 and Vista Home Basic @ 4800
baud and it worked fine. I do have a problem with saving a configuration
though. The utility crashes at the end when it tries to save the config
file. A file is saved in the directory but I have not tried to upload it yet
Hi Doug
Congratulations !
I worked 103 QSOs, 25 mult on 20m with K3/5watts QRP.
I am sorry but I cud not hear you during the contest.
73 de aki ja1nlx
- Original Message -
From: DOUGLAS ZWIEBEL [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Tuesday, February 19, 2008 10:06 AM
I have one more report of this as well. I'm on the road right now and won't
be home until Thursday. I'll dig into it ASAP when I get back.
If the file has the CRC-32 line at the bottom, it's complete and should be
OK for restore. I pass the file twice during restore, once to verify that
it is
Looking for a working KAT100, let me know condition and price including
shipping to 23901.
Thanks!
Kyle
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Filter has been sold
JIm - W0EB
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Help:
Argh! I agree with the others that multiple TX EQ settings are
a must. Even with the Mark V, I've discovered that it's often
very worthwhile to change transmit bandwidth, turn off/on the
EDSP modulation and select from among the built in EDSP EQ
based on conditions or operating style. A
Joe,
Agree. But this is a good start. Now EQ is useless.
Mark
--- Joe Subich, W4TV [EMAIL PROTECTED] wrote:
From: Joe Subich, W4TV [EMAIL PROTECTED]
To: 'AB7R' [EMAIL PROTECTED],
elecraft@mailman.qth.net
Subject: RE: [Elecraft] K3 Equalization Memories -
Missing?
Date: Mon, 18 Feb 2008
In addition to its requiring a higher tip temperature for hand soldering,
one of the vendors we use where I work is into using liquid nitrogen to
flash cool the stuff so that it gains a glass-like quality at a molecular
level. Apparently this makes it much more durable.
K2 serial no. 231, expertly assembled.
Comes with KAT2, KNB2, KAF2, dimple added to knob, 3 fold out stand,
FW upgraded to 2.03d.
Asking $550 shipped in CONUS.
73,
Casey, NA7U
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Charlie,
I am sorry to hear that Rob Sherwood's K3 test was performed on a
rig that may or may not be representative off all K3's. It would have been
best if Elecraft had not done any work on it or made any adjustments to it
once it was built by you. Chances are what they did to it
The problem you face is getting a non-reactive connection from the rig to
the ground.
Any conductor connected to the earth at the ground level will be grounded at
that point and will be above RF ground at the other (rig) end. If you
happened to have a 1/4 wavelength wire between your rig and
In a message dated 2/17/2008 8:20:51 P.M. Pacific Standard Time,
[EMAIL PROTECTED] writes:
- Original Message -
From: Ron D'Eau Claire [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Sunday, February 17, 2008 8:44 PM
Subject: RE: [Elecraft] My Lisagram arrived!
As a native
I was informed, quite vehemently in fact, that American does not only apply
to people who live in the US but to those in all of the Americas. My classmate
from Colombia was proud of the fact that he was an American. Thus Americans
might speak only one language but their mother tongue may
I am sorry to hear that Rob Sherwood's K3 test was
performed on a rig that may or may not be representative off
all K3's.
Why would you say that? The K3 that Sherwood tested would certainly
be representative of the factory built units. Further, if as claimed,
user alignment ca
To arbitrarily dismiss this test as non-representative smacks of a
troll.
No it doesn't. This is exactly the reason why the ARRL buys a rig and
doesn't accept product from manufacturers to test. If you know what is
going to be tested for you can make sure to tweak and tune for those specs
It would be good for the wider amateur community if someone could make a
recording of that.
David
G3UNA
Good news indeed about the K3 being at the head of the performance list -
Congrats to the Elecraft folks! Thought I would mention that Rob Sherwood
will be giving a talk tomorrow (Tuesday)
90 matches
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