Should be delivered at this QTH today :-)
Ordered with rest of K3 on 2-May-07
73 de M0XDF, K3 #174
--
Hofstadter's Law: The time and effort required to complete a project are
always more than you expect, even when you take into account
Hofstadter's
Law.
On 29 Jul 2008, at 14:01, Jerry T.
Alan Bloom wrote:
The cool (pun intended) way to do it is to use a thermostat wired in
parallel with a resistor in series with the fan. The fan only runs at
full voltage when the heat sink gets hot.
The Astron SS-30 has a very noisy fan that is controlled by a thermal
switch on the
Well David,
You knew that it would take some time. The Hofstetter 's Law is directly under
your message hi! I will try to remember the Law, I ordered my KRX3 yesterday :-)
73 's Steef PA2A
Subject: Re: [Elecraft] K3: KRX3 Shipping?
Should be delivered at this QTH today :-)
Ordered with
For whom is still tracking deliveries
K3/10 Kit, Serial # 1230
KFL3A - 2.8K Filter
KAT3
KPCA-F
KUSB
MH2-R
After a long waiting time, invoiced at 23/05/2008.
Sent to my friend in Holmdel, NJ.
I have picked up from there last week and carried as hand baggage.
Passed through Dullas-Washington
Yes
73 de M0XDF, K3 #174
--
Hofstadter's Law: The time and effort required to complete a project are
always more than you expect, even when you take into account
Hofstadter's
Law.
On 30 Jul 2008, at 00:51, n4lq wrote:
Does Elecraft notify you before shipping to be sure you still want it?
H have had both success and failres downloading firmware using IE6 and IE7 but
I have never had anyproblems at all using Firefox as long as you have the
settings correct.
I have kept a record of all Beta firmware since 1.94 and general releases since
1.96.
If anyone wants a copy of these
I used a 5 volt regulator on my MFJ 4225 to slow down the fan. This allows
the fan to start reliably at any voltage. I have run mine and my K2-100 this
way for at least 5 years with no problem on SSB, CW and DIGITAL.
73
Ken W0CZ
Bill NZ0T Wrote
As I'm not a very technical person I just used a
My K3 appears to have developed a power switch problem - it won't turn
off.
While away on Scout camp last week, I allowed another 2 hams to work
the K3 while I was not present (one is quite young and the other an
adult) - later on, one of them noticed that the K3 had turned itself
on
Hello Lyle,
I personally am not experiencing the low SSB output on any band, but I am
considering going from the 2.7K filters in the K3 and KRX3 (matching filters)
to the 2.8K filters. I may be asking for trouble by doing this. Is there any
indication as far as you know that the filters may
My K3 appears to have developed a power switch problem - it won't turn
off.
While away on Scout camp last week, I allowed another 2 hams to work
the K3 while I was not present (one is quite young and the other an
adult) - later on, one of them noticed that the K3 had turned itself
on
Done that twice now and no difference. I have not experienced any
problems with the 'electronics' before.
--
There is no pillow so soft as a clear conscience. -French proverb
On 5 Aug 2008, at 14:57, Dave Martin wrote:
I'd try reloading the firmware, including the DSP data tables. My
#605
Hi Guys, built my K1 about 4 years ago and still performing like new, but
now on with my K2 serial No. 6563. I have a few queries on the LCD/backlight
installation. I think I understand the manual/errata but just want to make
sure since I have seen a few postings on this issue.
My backlight
Hello all:
I have a three element Telrex 20 meter monoband (Yagi) beam at 75 feet. I
successfully added two 15 meter elements in between the three 20 meter elements
in the same plane and on the same boom as the 20 meter elements. As best I can
measure, the addition of the 15 meter elements
On Tue, Aug 5, 2008 at 1:44 AM, Dave G4AON [EMAIL PROTECTED] wrote:
The difference between TCXOs is 4ppm not 4 Hz. The standard TCXO can be +/-
250 Hz at 50 MHz, the optional one can be +/- 50 Hz at 50 MHz or perhaps +/-
25 Hz once the firmware is changed to allow the supplied calibration table
...Is there any
indication as far as you know that the filters may be a part
of the 10 meter SSB output power problem?
The problem I have been aware of is the LSB/USB power output difference.
That seemed to be confined to 2.7 kHz filters, was related to the
center frequency offset, and
I have the 2.8 filter installed so the problem is not limited to the 2.7.
Mike/aj9c
Lyle Johnson [EMAIL PROTECTED] wrote:
...Is there any
indication as far as you know that the filters may be a part
of the 10 meter SSB output power problem?
The problem I have been aware of is the
G'day,
Had the chance to listen to the Rob Sherwood presentation at Dayton Drake
Forum 2008. Very interesting but he had a couple of rather unflattering
issues with the K3. Looks like the output at both ends of the chain, RF
and AF could be better, particularly the AF.
Looks like my
Hello, all,
I'm about to order a K1, and thought I'd ask your opinions about various
options and configuration choices.
1. I understand the tuning range can be set to either 75kHz or 150kHz.
My inclination is to go with the 75kHz range, for the slower tuning rate.
2. Somewhat related to
Dave:
I have a K1 built it in 2003.
Tuning range, I tried 150 KHz, too fast tuning. I played with it a bit and
come up with about 80 KHz, seems very nice.
Noise Blanker, I have it. Helpful only sometimes.
Battery Holder, I did not get it.
ATU, works very well. Fed the antenna with ladder
Dave
1. I find my K1 a bit coarse on tuning even when set to the 75 KHz
tuning range.
2. Can't help, here in Europe CW only runs from 7.00 to 7.035 or so on 40m.
3. A: KAT1 only has limited range but it is effective when tuning
antennas provided you prune your antenna to suit. It works fine
Come join the NAQCC and help us in our mission to preserve and encourage CW
activity on our amateur bands. The NAQCC (North American QRP CW Club) is for
ALL CW enthusiasts around the world.
Our members include Big Gun contesters, hard-core QRPers, experimenters,
ragchewers and SWLers; young
I'm not exactly sure what it is but with the K1 connected to the RX_OUT jack
then switching to RX_ANT and getting the antenna connected to the K1 I often
find that I prefer the sound of the sigs on the K1 to that of the K3. But
the K3 is a LOT easier to get on freq (I selected the 150Khz
I have the 150Khz range selected and I'm not sure which I prefer. You lose
the ability to get to 10.0Mhz and I sometimes use that to check frequency or
just to generally check the rig and stuff. The 150Khz does make the knob
awfully touchy but I'm into fiddly knobs. I find that many of the
David,
Your problem sounds EXACTLY like the one I had with my K3 (#96). I went
through the same sequence of events as you seem to be experiencing.
Initially, the K3 started turning back on by itself; then later it wouldn't
turn off at all, and had to be unplugged from power to turn it off
David, thank you for that, from other mails, it looks very much like
the KIO3 board - removing it solves the proble, putting it back in and
the problem comes back.
Lyle has suggested just cleaning it might help, but I'd prefer to get
a replacement board since I think the problem would return
Down to the single digit figits - hoping for mine to ship in days.
Wouldn't something like this be affected by equalization?
73, Jim
- Original Message -
From: Brett Howard [EMAIL PROTECTED]
To: 'Mike Harris' [EMAIL PROTECTED]; Elecraft@mailman.qth.net
Sent: Tuesday, August 05, 2008
Hi Lyle,
I do not know if we all might be talking about various ills with similar
symptoms. It might be that more than effect might be behind the various
observations, imho.
What I have, to the best of my memory, observed in various firmware
versions is that there is/was a tendency for the
Hi everybody,
I just finished to assemble my KX1 with autotuner and 30/80 option
and I have one question for you:
As the the manual has been written for 20-30 and 40 meters bands,
the lenghts for a long wire are given for those bands. How long
should it be for having a good compromise even on
I use TX equalisation with my K3 to improve on my deep gravelly voice.
It sounds far better than my TS-480 with a similar microphone on both
transceivers (Kenwood MC-43S on the K3, stock mic on the '480), the
TS-480 has limited equalisation on TX but even with that it's well below
the quality
Toby Deinhardt wrote:
Hi Lyle,
I do not know if we all might be talking about various ills with
similar symptoms. It might be that more than effect might be behind
the various observations, imho.
What I have, to the best of my memory, observed in various firmware
versions is that there
You know I was thinking that the K1 would have a much narrower AF bandwidth
and if I remember right I think I remember seeing some caps in the feedback
loop that would cause some stuff like that. But then in the K3 there are
all the IF filters and DSP IF filters that should be doing that same
I forgot to mention one thing that I found is that running the Dual PB
filter actually helps make the K3 sound a lot better in my opinion. The
audio on the K3 seems to get kinda harsh at the narrower bandwidths as all
the static is all centered into a relatively narrow band of frequencies.
But
Dave,
A comment on your item #2 - while the VFO in the K1 can be modified to
have the bands begin 25 kHz up from the lower band edge, if you do that
for one band, then all bands will start up 25 kHz. That is a problem
with 30 meters where the normal tuning range begins at 10,100 kHz, and
Friends,
maybe we have to sort problems with SSB power level to permanent
problems and temporary problems.
Permanent lower level is possible to cure via VCE gain setting (I
suppose hope).
Temporary problems are more complicated. I remember my problems with
miliwat output levels via KRX3 vith
i have for sale unbuilt kits for use with k2
1 x k2/100 integration kit kpa 100
1 x 150w auto atu kat100-1
1 x host control aux. i/o
all these kits are new unopened
and untuched
cost from the states $737+ shipping inport vat
my price £420 inc postage
contact chris
[EMAIL PROTECTED]
tel.
mob
I have a built and working KDSP2.
If you have an unbuilt or built/working KAT2 and $60 (the kit price
difference), I would like to trade.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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Hi Dave,
In the presentation the TX element was not necessarily TX audio quality,
rather the less than stellar intermod figure, however, I believe this has
been accepted as typical of a low voltage 100W output PA.
The RX audio issue, which is probably more important, comes up in the last
Hi Sante:
Congratulations on your new KX1 ! If you are talking about a 'random length'
long wire antenna, I'm betting you could get away with 66 feet if you lay a
66 foot counterpoise on the ground. The other idea I have is a 135 foot
center-fed doublet fed with window line - the small stuff for
Would be interesting to know the detail of what Rob Sherwood said, but I
agree with you, Dave. The tx and rx audio on my K3 sounds cleaner, brighter
and clearer to me than my now obsolescent FT1000MP Field even before
applying any equalisation. I use either a headset or a couple of small
Temporary problems are more complicated. I remember my problems with
miliwat output levels via KRX3 vith certain version of F/W,
correction - should be KXV3
my waiting for KRX3 is so intensive
:-)
L. -dst-
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I just completed K3 1162 and am interested in setting
its NR to an optimal value for combating summer QRN.
I am currently using F 1--4 with some success, but
would like to hear about the settings others prefer.
Any other advice on other ways to reduce QRN and back
ground noise with K3 features
Hey guys,
I posted on my blog ( http://blog.kotarak.net/ ) some text and pictures of
KPA100/KAT100 in EC2 modification I did a few years ago.
I installed a couple of LCD meters on the front panel of the EC2. This is a
fun project and easy to do! Its been working just fine all those years.
73
If you listen to Sherwood's presentation, you'd hear him state that
the distortion problem he discusses occurs only when driving a low
impedance (speaker) load. If driving a high Z load like, say, powered
speakers, or using headphones, there is no problem.
So that might explain your observations.
Sherwood's talk is at http://www.sherweng.com/
click on the one at top left (
Roofing Filters, Transmitted BW Receiver Performnce,
Dayton Drake Forum 2008, Slide Show with Audio). It is a wmv movie of
his talk.
Jerry W4UK
At 06:29 PM 8/5/2008, Geoffrey Downs wrote:
Would be interesting to
I have previously documented the SSB power drop problem to elecraft and
understand it's on Wayne's list to resolve. I used the 2-tone test and
adjusted the 2-tone peak power to equal CW TUNE power (using an LP-100A). I
found three things trigger the SSB power drop: 1) a power change even if you
Sante,
Although you may be able to load a small antenna on 80 meters, the
efficiency will diminish as the antenna gets physically smaller (one
cannot defeat the laws of physics).
I would suggest that you carry along extensions.that you can clip on to
extend the physical length of your
I find for weak CW sigs that most of the settings over 1 are a bit
much... I find that 1-1 and 3-1 are my two favs.
On Tue, 2008-08-05 at 19:18 -0400, Vic Abell wrote:
I just completed K3 1162 and am interested in setting
its NR to an optimal value for combating summer QRN.
I am currently
Pre Firmware 2.20 I uses AGC SLP 4 and AGC THR 8 to
make the K3 sound like the K2 AGC. At least on CW.
And used NR F2-4. That worked great at Field Day.
Since Firmware 2.20 I cannot find a setting that accomplishes
two things
Sounds like a K2 and the audio level for NR on off is about
I have noticed something strange happening with both of my K3s that I think
is a firmware issue. I can reproduce it on both K3s. Currently I am
running v2.16 in both but I have tried v2.20 and the problem is still
reproducible. NOTE: It is reproducible, but not 100% of the time.
Problem:
Its kinda tough for me to give a good A/B comparison. I had the rig for
a while then had to ship it back for a bit of work then when it came
back I upgraded... I remember the NR working better before I got it
back
On Tue, 2008-08-05 at 21:23 -0400, hank k8dd wrote:
Pre Firmware 2.20 I uses
Even though I'm about as old-fashioned as one gets about reading a real
printed book, I find that downloading a copy of an Elecraft manual PDF and
storing it someplace I can click on it works out best. I can do SEARCHES in
the PDF, which allows me to find all references to a control or
Dave - You wrote:
1. I understand the tuning range can be set to either 75kHz or
150kHz. My inclination is to go with the 75kHz range, for the slower
tuning rate.
I like the slower tuning rate and even that is a bit fast for my taste.
2. Somewhat related to 1), will I be better off with
When is the KTCXO software ready for my TCXO in the K3?
Ron VK4KDD
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I was using PSK31 in DATA A mode and wanted to enable the speakers,
which I have set to PF1.
I pressed PF1 and it ended the transmission, but my PSK program was of
course unaware that this happened.
So I had to abort TX from it and start over.
Might it be possible to have the PF keys abort
I just finished putting together a K3, I've looked at the
manuals, and I have a question.
I have identical filters in the main and second receivers.
Stock filters plus FL2 2.1kHz and FL3 400Hz.
How do I know the roofing filters in the KRX3 are being
selected? Are they automatically
I just finished putting together a K3, I've looked at the
manuals, and I have a question.
I have identical filters in the main and second receivers.
Stock filters plus FL2 2.1kHz and FL3 400Hz.
How do I know the roofing filters in the KRX3 are being
selected? Are they automatically
Hi Tom,
I don't have a KRX3 yet (it's backordered), but I've been using a
K3 for a while. If you've gone into setup for each filter, told
the software what bandwidth filter is in each filter position, and
turned each filter on, as you slowly turn bandwidth control you
should hear an audibly
Yes, I expect a voltage regulator would work better than a resistor to
drop the voltage. Since the fan motor draws more current at startup
than when it is running, a contant-voltage source should give
more-reliable startup at a lower voltage.
But you probably still want to use a thermostat or
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