Johnny,
Thanks for your efforts to bring the K3 to the attention of the
Chinese-speaking world. The more DX the better (hi).
I wonder if Bernie of Nifty! manuals fame would like to take this
on? He wrote a very nice short-form operating manual for the K3, and
even if he doesn't speak
I may be biased (I designed the K3's knobs, switches, LCD, and
packaging with intent to have everything match, aesthetically), but I
strongly recommend *not* changing the knobs to anything else.
If you're only doing it because you have one that's defective, please
request a replacement from
On my list :)
Wayne
On Dec 3, 2009, at 3:32 PM, Terry Conboy wrote:
Now that the K3 and most options are shipping from stock, these should
be added to the Gift Guide, along with the new Elecraft phone number.
73, Terry N6RY
__
If you can spare a few minutes to give our latest field-test code a
serious work-out in strong-signal conditions, please email me directly
(n6kr at elecraft dot com).
Details:
The K3 now instantly detects situations where the AF output would be
so strong as to drive the speaker or
The PRE icon pertains only to the K3's internal preamp. I suggest
turning it off in most cases when you're using the PR6. Otherwise
you'll have more gain than necessary, possibly degrading dynamic
range. (With the PR6 on -- giving you an MDS of about -144 dBm --
turning on the internal
, so that tapping the RX ANT button doesn't turn on the
internal preamp?
Mike
Wayne Burdick wrote:
The PRE icon pertains only to the K3's internal preamp. I suggest
turning it off in most cases when you're using the PR6. Otherwise
you'll have more gain than necessary, possibly degrading
Hi all,
As we've said multiple times: We immediately replace such knobs on
request. Posting about it on the reflector doesn't count. Please
contacting us directly :)
Tnx
Wayne
http://www.elecraft.com
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Tom,
You can use RIT or XIT in PSK31. We haven't yet added SPLIT for this
mode.
73,
Wayne
N6KR
http://www.elecraft.com
On Dec 6, 2009, at 7:11 AM, cx...@4email.net wrote:
Hello, using K3 #250 here with 3.63 firmware, etc. Today there was a
V5/DJ on 17m on PSK31. He was calling CQ and
Short answer is: not a good idea.
The K3 front panel PC board has top-surface gold-plated landing pads
for each of the pushbutton switches. It might be possible to find
appropriate vias (holes) at which to attach discrete wires to activate
the switches externally. But this could introduce
This is on my firmware list.
Wayne
http://www.elecraft.com
On Dec 7, 2009, at 1:25 PM, Ian White GM3SEK gm3...@ifwtech.co.uk
wrote:
Joe Subich, W4TV wrote:
Ian,
If this area of code is to be revisited, the gap in available power
settings on 50MHz also needs to be addressed.
The
Wes,
The DSP NB causes some artifacts at its higher settings. This is an
unavoidable side effect of signal processing.
The DSP NB is applied after the crystal filter, so the bandwidth is
already constrained, removing some of the inherent characteristics of
noise pulses, including their
Hi James,
The Sienna is an interesting design, and I believe it's available in
kit form. I've met the designer, a very capable engineer.
Given my inherent bias, you can take the rest of my comments with a
grain of salt.
The rig is vastly different from the K3. The K3 has about 20 dB
DSP noise blanking is applied after the hardware AGC, as in all other
rigs I know of that include DSP NB, but I believe it is pre-DSP-AGC.
Lyle may want to comment on this. I know we spent about a year
optimizing the gain balance!
73,
Wayne
N6KR
On Dec 8, 2009, at 9:39 AM, Duncan Carter
K3 beta-test firmware revision 3.66 (with DSP rev. 2.48) is now
available.
AF Output Protection: The DSP now senses when AF output would be so
strong as to drive the speaker or headphone amplifier into the
clipping range. If this happens, AF is muted until you reduce signal
levels,
a means for integrating a keyboard for CW
into
your keypad (like this ? -
http://www.hamgadgets.com/store/product_info.php?products_id=106) as
some of
us are fighting a loosing battle with arthritis - using my
Vibrokeyer or
Bencher is getting tougher every day.
73, Gary NL7Y
wayne
That's why it's a beta release :) We're seeking additional input on
this revision and will make an adjustment to the behavior ASAP.
tnx
Wayne
On Dec 8, 2009, at 1:51 PM, Steve Ellington wrote:
WorksSounds like an old time telegraph sounder clicking away.
Is there any means to disable
Hi Greg,
We'll be adding this function to our K3 Utility program at some
point. We'd be happy to get your input on it.
73,
Wayne
N6KR
On Dec 9, 2009, at 5:24 PM, w4grj wrote:
I am brand new K3 owner, unless I have missed something in all my
research,
cannot find a program to manage
We'll be making a number of improvements to W2 firmware in future
releases (starting in January). Firmware updates are very easy to do
on the W2, and the required serial cable is supplied.
For example, the last LED segment illuminated will be able to show a
range of intensities (from off to
Terry,
With AGC OFF, your first line of defense is to set CONFIG:AF LIM to
something in the 18-24 range so that the limiter will jump in to
protect your ears when a strong signal appears.
The AF output protection feature kicks in at a *much* higher level.
To trigger its muting action,
Once you have the K3 set up the way you like it, you should save your
EEPROM parameters. This will allow you to restore the setup easily.
Normally this would not be necessary, but it's a good idea to have the
configuration file around, just in case.
A K3 configuration file can even be used
We're shooting for next week.
73,
Wayne
N6KR
NZ0T wrote:
Thanks for the update Wayne - do you srill anticipate the first
version of
the PC software to be available this week?
73 Bill nz0t
wayne burdick wrote:
We'll be making a number of improvements to W2 firmware in future
On Dec 10, 2009, at 1:08 PM, Randy Tomer wrote:
1) Is there a way to eliminate the 60 meter band in the band switch
sequence?
Yes; see CONFIG:BND MAP.
2) Is there a way to separate the 80 meter band into 75 m / 80 m
two different bands?
No, but you could use two different memories
K3 beta-test firmware revision 3.68 (with DSP rev. 2.49) is now
available.
This revision primarily affects those who turn AGC off. In the
previous beta release (3.66), the new AF output protection feature was
a bit too aggressive in the AGC OFF case, causing the audio output to
Richard,
The K3's external speaker output requires a stereo plug. Also set
CONFIG:SPKRS to 2.
Hum pickup is a very common problem with some powered speakers,
regardless of what they're used with. You may be able to fix it with
different cabling, moving the DC adapter, etc.
I recommend
The K3 has a lot of overall gain. This is necessary to provide
sufficient speaker output in operating locations with high ambient
noise levels.
But you can adjust the amount of gain, and shape it, to meet your needs.
If you feel that the noise level of your K3's receiver is excessive,
On the list.
tnx
Wayne
N6KR
On Dec 18, 2009, at 6:56 PM, Joe Planisky wrote:
I don't think I've seen this firmware request before. When Wayne and
crew have nothing better to do, I'd like mode-specific monitor
levels. I work CW and digital modes mostly. I most definitely want a
good
The main K3 MCU controls the XV144 via DC signalling on the IF coax
cables. Details later. The manual will be posted shortly.
Wayne
N6KR
http://www.elecraft.com
On Dec 22, 2009, at 10:44 AM, w...@comcast.net wrote:
Hi all,
I've read through the new manual, but I don't see any
Lyle and I will look into this issue when he gets back from vacation.
73,
Wayne
N6KR
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Post:
Yes, we can do this in firmware. On my list.
73,
Wayne
N6KR
On Dec 23, 2009, at 12:07 AM, David Pratt wrote:
That raises the question as to how 146-148MHz will transmit
inhibited as
would be a licensing requirement in some IARU Regions 1 3.
Presumably
this will be possible via the
Hi Phil,
Key out is driven by a very rugged N-channel MOSFET.
73,
Wayne
N6KR
On Dec 23, 2009, at 9:01 AM, Phil Hystad wrote:
I noticed from the documentation that the K3 Key out line can handle
up to 200 VDC and 5 amps. I assume this means that when the key out
is closed that it can
Hi all,
As you probably know, we keep a list of firmware features and
improvements to be added as time permits. Many of the most-requested
changes were made over the past several months, keeping pace with the
demands of the fall/winter contest season. (A few that come to mind:
switch
, offset for fm repeater work
This is really basic to radios I have had for over 5 years….anyway,
hope this makes the priority list.
Thanks for a great Radio!
Jack
W4GRJ
From: elecraft...@yahoogroups.com
[mailto:elecraft...@yahoogroups.com] On Behalf Of Wayne Burdick
Sent
Jack,
Transmitting between 7.5 and 9 MHz is not permitted because we have to
enforce a minimum frequency distance from the 8.2 MHz IF (and its
associated IF rejection trap on the KANT3 or KAT3 module). An excluded
first IF region is a fundamental limitation of a down-conversion
design.
Ah, I'm reading my email backwards again :) We might be able to allow
you to go to 7.6 MHz. I have to test this.
tnx
Wayne
N6KR
On Dec 23, 2009, at 1:26 PM, W4GRJ wrote:
Correction to my poor grammer, should have said .Waiting to
hear back
from Elecraft to see if they can move the
Hi Jack,
This is intentional. AM-S uses either the upper or lower sideband of
the AM signal. You can select one or the other using SHIFT to avoid QRM.
73,
Wayne
N6KR
http://www.elecraft.com
On Dec 23, 2009, at 2:47 PM, Jack Hubbard ni...@yahoo.com wrote:
After installing 3.58
It already is. Go into CONFIG:SQ MAIN and tap '1'.
73,
Wayne
N6KR
http://www.elecraft.com
On Dec 23, 2009, at 2:45 PM, Jack Hubbard ni...@yahoo.com wrote:
I would like to see the squelch available for CW and SSB. We could
monitor net frequencies and utility stations (such as 5598 usb
I don't think all such cases can handled in reality. Programs doing
menu manipulation should capture the full attention of the radio. The
user should be instructed to turn everything else off in this case.
Wayne
http://www.elecraft.com
On Dec 23, 2009, at 2:38 PM, Dick Dievendorff
Hi Jim,
We'll clarify this on the web site and in the K144XV manual.
tnx
Wayne
On Dec 26, 2009, at 8:11 AM, Jim Spears wrote:
One thing that I do not see is the minimum requirement for the FM
filter if
one wishes to use the K144XV to transmit FM. I assume that I need
the FM
filter
Thanks for the input, everyone. I've saved all of your suggestions,
and no doubt we'll be reviewing and prioritizing well into 2010.
Probably time to end the thread, too.
Here's to a safe and happy new year!
73,
Wayne
N6KR
__
We're going to make NR per-mode in the next firmware release, too.
This should eliminate the need to hunt for the ideal setting each time
you change modes.
73,
Wayne
N6KR
On Dec 29, 2009, at 5:17 PM, Chuck Guenther wrote:
I've been pleasantly surprised at how well NR works even with
very
We have several built and we're busy with a second round of
improvements (mostly in firmware). We still can't put a date or price
on it, but the engineering team is doing everything possible to get it
into manufacturing.
73,
Wayne
N6KR
P.S. It's really cool. You definitely want to borrow
far.
73
--
Joe KB8AP
On Dec 23, 2009, at 10:02 AM, Wayne Burdick wrote:
As we head into 2010, we'd like to refresh the master firmware list
based on your input.
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Home: http://mailman.qth.net/mailman
What I meant was that you *could* make a transverter for these bands
and interface it to the K3 via KXV3 module. We don't have plans to
offer one ourselves.
73,
Wayne
N6KR
On Jan 4, 2010, at 10:03 AM, DL5OCD wrote:
Hello Dick,
if i don`t get wrong, Wayne mentioned a new transverter
(Disclaimer: I'm biased, by definition :)
The K3 also has:
- a 2nd receiver option with identical performance to the main, which
allows you to listen to two bands at once, or do diversity receive
(the 7600 has dual-watch, but this cannot provide diversity receive
because both receivers
Giulio,
The load impedance was probably extremely low, and at full power on
this particular band, the power-handling capacity of the 8.2-MHz IF
trap was exceeded. It's possible that the trap was mistuned (too close
to 40 or 30 m). Note that L10's winding is adjusted at the factory and
Hi Tom,
You'll get a lot of opinions on noise blankers, I suspect :)
Here's my 2 cents: The K3's combination of two noise blankers -- one
at the 1st IF and one at the DSP -- can work wonders on all sorts of
noise. But it's especially good with power-line noise (loads of that
at my QTH).
Firmware is finished. K144XV PC utility (for loading firmware) is also
finished. A small number of units have been shipped and a lot more are
about to be.
Early reports have been very positive. I suspect some may show up on
the reflector any day now.
73,
Wayne
N6KR
On Jan 7, 2010, at
On Jan 7, 2010, at 1:54 PM, Matt Zilmer wrote:
I installed a production K144XV recently. It's been in K3 #24 for
about 10 days, and there haven't been any real issues with it.
Mechanical installation went according to plan, and takes about 60
minutes. There is one power pin that needs to
On Jan 7, 2010, at 2:12 PM, Samuel Strongin wrote:
If sensitivity is less -140dbm on 2 meters it is DEAF!!!
Sam kf4yox\
I already posted a correction to this. It's about -144 dBm. Matt
didn't have a signal generator that could go lower than -125.
73,
Wayne
N6KR
I just measured the MDS of a production K144XV: -145 dBm. This is
with the module installed in a K3. It'll probably vary slightly from
one unit to the next.
73,
Wayne
http://www.elecraft.com
On Jan 8, 2010, at 2:44 AM, Geoffrey Mackenzie-Kennedy gm4...@btinternet.com
wrote:
Hi Phil,
A few questions about the K144XV...
1. I noticed from the manual that the chassis stiffener that comes
with the K144XV seems to be the same one that I already have in my
late model K3 (3799). Is this true?
The modified chassis stiffener has been phased into production. In
Yes.
Wayne
N6KR
On Jan 8, 2010, at 10:22 AM, pd0psb wrote:
A totally different question:
Is support for coarse tuning in European VHF frequency rasters (6,25
12,5kHz) somewhere high on The List?
73'
Paul
PD0PSB
wayne burdick wrote:
Hi Phil,
A few questions about the K144XV
The K144XV module's specifications include an input noise figure of
about 1 dB. This figure should be used when comparing the K144XV to
external 2-meter transverters such as the Elecraft XV144 (which is
about the same). This is the traditional way transverters are specified.
When the K144XV
K3 beta-test firmware revision 2.72 (with DSP rev 1.98) is now
available. Anyone who has the KDVR3 (Digital Voice Recorder) installed
will need this revision to use the DVR. We'll be making further
improvements to DVR functions in later releases. Full details appear
below.
Please send any
I'm taking lots of notes for the next revision :)
Wayne
On Dec 10, 2008, at 12:48 AM, David Ferrington, M0XDF wrote:
Which playback? Message playback or the RX loop? I would guess you
mean Message playback and I would like that to stop if XMIT or a PTT
line is keyed too.
Can this be added
K3 beta-test firmware revision 2.73 (with DSP rev 1.98) is now
available. See release notes below.
Please send any problem reports to k3supp...@elecraft.com. For
instructions on how to load beta firmware, please see:
http://www.elecraft.com/K3/k3_software.htm
73,
Wayne
N6KR
* * *
MCU
I've read all the mail on this and will try to duplicate it (and fix
it). Thanks for the input.
73,
Wayne
N6KR
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I was able to confirm and correct both of these problems, and both will
be fixed in the next beta firmware release.
If either of these is an inconvenience and you'd like to try the latest
field-test code (which includes the changes), please e-mail me directly
(wayne at elecraft dot com). I'll
Tom Whiteside (N5TW) wrote:
I'm wondering if this new ADC reference calibration affects any other
calibration settings. Are there other parts of the calibration
procedure we should repeat after changing this setting from the
default?
Hi Tom,
At present only the PLL voltage and supply
Per, OZ5ABO wrote:
Mode Switch:
It takes only a very light push to activate the up function. Now,
activating the down/ALT is a very different story as I have to
push/press *very* hard to activate this side of the switch.
This is definitely abnormal. Please contact k3support; they'll help you
Dr. James C. Garland wrote:
In using my K3 for diversity reception, I use my G5RV antenna on the
AUX subreceiver input, and my SteppIR for the main
(transmitting/receiving) antenna. When I’m transmitting, does the K3
short the input to the subreceiver AUX input, or otherwise protect the
Tony, N2TK wrote:
Wayne,
To carry this one step more, what about when I am running multiple
K3's on
different bands at the same time? Do you recommend to use external
receive
bandpass filters on the receive lines if I am using receive antennas
on the
Receive Antenna and/or Aux input?
And
w...@comcast.net wrote:
As an add-on, we have used a pair of K3's at K8GP multi multi VHF
station on 6m. Our 5 element and 7 element antennas were only several
hundred feet apart and we didn't hear the COR come on and we could
actually copy stations 20 KHz away from our transmitter running
Jerry Flanders wrote:
At what approx. RF voltage level sent back into the rx from the second
antenna do we need to worry about additional protection like external
switching or shorting?
The short answer is: the voltage resulting from input power high enough
to trigger the COR (probably 0.5
Ed Gray W0SD wrote:
What about Snow static on the main antenna and danger to the rcv? It
is fairly high voltage and I assume not much current? I had a bunch
during the 10 meter contest. Those of us in the north country hear it
snapping in the antenna switch quite regularly if not grounded
Mike, W9QS wrote:
I have a K3/10 on order. I have used my K2 for over a year and find
the filters to be very good. I operate 90% on the time on QRP CW.
I'm looking for opinions on which roofing filters I might include.
Mike,
If you operate CW at all, you'll almost surely want at least
Lance Collister, W7GJ wrote:
I got the 6, 2.7 (standard), and 1.8 KHz filters in my K3. I realize
that a narrower filter will be good for crowded CW with strong
stations, but was waiting for the release of the variable filter
mentioned on the website. Is there any more recent information on
Hi Steve,
The AF mods are worthy, but the disappearance of the power-on noise may
be coincidental. I had to fix this in firmware, and we haven't declared
that revision as beta-ready yet.
73,
Wayne
N6KR
W0SZ wrote:
For what it's worth, I noticed some power-on noise with my K3 which
was
Hank (K8DD) wrote:
Hmmm . Strange
Support tells me it's normal for the readings to flicker/change
numbers...
This normal for the SCN ADC menu entry. I didn't try to do averaging
or hysteresis on this reading because it would be overkill (it's
strictly for test purposes). Each switch's
ab2tc wrote:
For the record, my readings are perfectly stable on one number even if
I do
my best to tease the button press.
Not relevant to Hank's problem, though. The A-to-D converter has an
inherent +/- 0.5 count ambiguity, and you just got lucky :)
73,
Wayne
N6KR
---
Sometime when you're cruising through the K3's menus, wondering what
some of the entries are for, try tapping DISP. This will show help
information for the current menu entry.
For example, if you're in CONFIG:SMTR PK, tapping DISP will show:
(OFF) PK-READING S-MTR
If a value in
So, you think the CONFIG menu doesn't have enough entries? That means
you probably have CONFIG:TECH MD (tech mode) set to OFF. Set it to ON
and stand back ;)
Which brings me to ask Why wouldn't one just leave his K3 in TECH MD
all the
time? Is there a disadvantage to this?
You might want
Gary Smith wrote:
As to CW the K3...
I use iambic paddles. I Always used keyers based on the Curtis 8044
like the Ham Keyer HK5A. I still do. I remember the TenTec internal
keyer was a different kind of logic and I had a terrible time with
it. If I remember correctly, it had an issue with
We strongly recommend the use of an anti-static mat when doing assembly
of any kit, and when working on equipment in general.
In our tests of the ESD mats we found that if we walk across the room
and then touch the mat, we draw an arc. So, the mat must be conductive,
though very high in
Thanks for your observations on this, Todd.
Just to be safe, we recommend using a stereo plug even when only a
single external speaker is being used. This is discussed in detail in
the owner's manual (page 20 in the case of revision D). Just use the
TIP contact of the plug for the speaker,
Hi David,
Lyle, KK7P (who designed the KIO3 board set) will create an application
note and post it as soon as possible.
The short version is: put 1/8-W (or larger), 470-ohm resistors from
each speaker output to ground. (The actual value isn't critical;
anything from 330 to 1000 ohms would
Randy Downs wrote:
Thought I found the problemTHEN I put the top back on. It failed
when the fp temp got to 37 deg c. If I leave the top off it won't
fail. The fp stays at 34 deg c. It's thermal whatever it is.
Randy,
Coincidentally, I just e-mailed you tentative instructions on how to
Stewart Baker wrote:
My thought are, to get the best VCO temperature tracking that the
CAL should be carried out at the mid point of operating
temperature range.
Is this correct, or doesn't it matter ?
Hi Stewart,
In general, it's good practice to calibrate equipment after it has
warmed
This is on the firmware list. I'll include a menu entry so it can be
turned off if desired.
73,
Wayne
N6KR
On Dec 22, 2008, at 1:28 PM, Dave G4AON wrote:
One point to watch: If you accidentally move the coarse tuning you will
find it hard to return to the original frequency with rounding
Steve wrote:
...I need to set Proc=0 and Mic=0 just before transmitting in MT63, and
after the transmission I need to reset Proc=10 and Mic=15 so I can
immediately start talking on the radio.
Hi Steve,
The most recent releases of code include both mic gain (MG) and speech
compression (CP)
You can find the synthesizer modification I described earlier on our K3
mods page:
http://www.elecraft.com/K3/k3_app_notes.htm
This mod involves adding one resistor. It should eliminate ERR PL1, ERR
PL2, or ERR VCO error messages that you see during operation or
calibration. If not, please
Is this the 2000-milliwatt QRPp power booster I asked you not to reveal
to anyone??
:)
Wayne
N6KR
DOUGLAS ZWIEBEL wrote:
Got your attention? :-)
RE: KPA800 and KPA1500
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Post to:
Robert Klein wrote:
I hope this isn’t too elementary for you folks, but I have not been
able to get my K3 to come close to accurately reading CW and data RX.
Hi Robert,
The CW and PSK31 decoders works best with a narrow bandwidth (50-150
Hz). Once you have this dialed in, turn on CWT and
K3 beta-test firmware revision 2.76 (with DSP rev 1.98) is now
available. See release notes below.
Please send any problem reports to k3supp...@elecraft.com. For
instructions on how to load beta firmware, please see:
http://www.elecraft.com/K3/k3_software.htm
73,
Wayne
N6KR
* * *
MCU
Hi Phil,
The K3 was optimized from the ground up for high dynamic range (which
we achieved). Sensitivity is very satisfactory on the HF bands
(typically -135 to -138 dBm). But on 6 meters, where a low MDS is
critical for some types of operation, an external, ultra-low-noise
preamp may be
Christopher Kovacs wrote:
I too still suffer from the notorious pop when powering on. I would
be interested if this change may help.
The AF noise burst that is eliminated by the latest firmware was
caused by the AGC being turned off until about 2 seconds after
power-up. If you had been
It's been awhile since we've publicly thanked David Fleming, W4SMT, who
created and maintains our Mac and Linux versions of K3 Utility. In
addition to doing a great job with the actual implementation, he works
closely with Dick (K6KR) on new K3 Utility concepts and ongoing
improvements. (Their
Far left side of the RF board (top, not bottom). They're leaded caps
about 1/2 in diameter. Blue, as I recall :)
73,
Wayne
N6KR
David Lankshear wrote:
What better time than the final hours of Christmas Eve to apply the
mod, recently described by Wayne, that prevents damage to the audio
Joachim wrote:
I've just installed MCU 2.76 and find that the diversity auto config
no longer works. Anyone else notice this?
Hi Joachim,
I just tested this and it appears to be working. What you may be
noticing is that in diversity mode (*long* hold of SUB), VFO B is no
longer linked to
Eivind L. Reiersen wrote:
Any reason for not implementing squelch in other modes (especially
SSB) ?
- I really miss it.
This is on the list, Eivind. It will be announced when we get it into
the firmware.
73,
Wayne
N6KR
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Trevor wrote:
... wondered if a dedicated Elecraft K3 panadaptor is still on the
development schedule.
Yes, definitely, unequivocally. (To use the vernacular: youbetcha :) I
can't give you any timetable, and I can't reveal any details yet, but
it will be highly integrated with the K3, and
Ralph Tyrrell wrote:
I hope your panadaptor does not need a computer connection.
It will work either way.
73,
Wayne
N6KR
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Julian, G4ILO wrote:
The 1PPM TCXO of the K3 is supposed to support the ability to be
calibrated
over a range of temperatures so it doesn't need the rig to be on all
the
time to improve stability. Unfortunately, unless I missed it in one of
the
updates, the firmware support for this is still
KM5Q wrote:
For AM SW listening be sure to get the FM filter (13 kHz). It gives
you the width you need for the audio bandwidth you expect. The normal
SSB filter (I have the 2.8) is too restricting for AM.
However, I find that switching mode from AM to SSB reduces severe
fading and
Michael E Fox (N6MEF) wrote:
My factory-assembled K3 is reading 1.0 SWR while my LP-100A and tuner
both agree on about 1.4-1.5.
The KAT3's stray impedance (in bypass mode) may impact the SWR as seen
by the K3's bridge, since this bridge is between the ATU and the LPFs.
This effect would be
Stewart Baker wrote:
The K3 output was from ANT1 using the internal ATU. The ATU was
automatically tuned to 1:1 on all bands.
The results I got for 2:1 VSWR are as follows:-
LP-100 K3
160 1.991.8
80 1.99
Lyle and I will team up on this as soon as possible.
tnx
Wayne
N6KR
On Jan 2, 2009, at 5:31 AM, k...@verizon.net wrote:
With the K3's RTTY decoder function enabled so it displays running
text on the front panel, intermittent distortion is introduced into
the TX AFSK audio...
---
DOUGLAS ZWIEBEL wrote:
Somehow, competing head to head with a big radio doesn't seem to
fit the Eric/Wayne approach.
It does now :) We (and the K3) are in it for the long haul, and we
don't think of it as a niche radio.
There are no plans for a K4. We'll continue to refine the K3 as a
WILLIS COOKE wrote:
Wayne, for those who complain that the K3 is not heavy enough I
suggest that you sell a battery box to attach to the bottom with a 100
amp hour gel cell. That should make it heavy enough to give anyone a
hernia.
This is left as an exercise for the reader :)
OTOH, we
On Jan 3, 2009, at 1:02 PM, Leigh L. Klotz, Jr WA5ZNU wrote:
There's a thread on a related topic (PSK TX IMD) on the Elecraft K3
list at Yahoo Groups.
Rich VE3KI posted some measurements done with the PSKMeter that show
poor IMD above about 50W.
Greg, AB7R, was unable to duplicate this.
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