Hi
Someone pointed out that we all have different 49 MHz oscillators. I guess
that many K3 owners have oscillators without input for the voltage control.
This pin is indicated in the KREF3 shematic as pin 1 (VCTRL) of Z1.
My KTCXO3-1 is manufactured by KS Electronics (part number 1099) and
Don and all,
The 88 foot dipole, and the 44 foot dipole, are examples of an antenna
designed for pattern alone with no consideration of feedline losses or
matching systems.
http://www.w8ji.com/short_dipoles_and_problems.htm
With an 88 foot antenna the 80 meter SWR on a 400 ohm line (most
Ah yes. Thank you Don. Clearly I've been working too far past my bed time.
73,
Joe
On Jun 11, 2010, at 12:21 AM, Don Wilhelm wrote:
Joe,
Cutting the tip off the stem bumper is not drastic at all, and is exactly
what is called for in the instructions. See the first step on page 60 of the
Just a post to tell you about the resolution of my K2 not hearing WWV and
other receiver problems. I was in e-mail contact with Don and after going
through what was going on with the BFO and VFO, he suggested checking the
voltages on U5 pin 7 and there was no voltage there when doing PLL. Which
Back in March, VFO A on my 2 month old K3 froze up. Back to Elecraft for
about 6 weeks, but the shipping seemed to cure the problem before it got
there, and it worked fine when I got it back - until last night.
Turning VFO A knob causes display to flicker last digit but not QSY. Using
RIT knob
One of the reasons I chose the K3 was eventual 10-MHz ext. reference
capability.
Well, then I guess someone will have to come up with a 49.380 PLL
circuit that uses 10-MHz as a reference. I have two such critters
for mw use. One is distributed out of Israel and will be used in
place of my
One of the reasons I chose the K3 was eventual 10-MHz ext. reference
capability.
Hopefully, it's still on the table for development and not permanently
shelved. I can certainly understand the need to prioritize other K3
features and accessories before producing the external 10 MHz Reference
I sent email to N3FJP asking if he had any enhancements coming to better
support the K3 and he answered that he does not. So, it is pretty much live
with the problems or change logging programs.
I've liked N3FJP ACL because I just want a simple logging program that sort
of looks like the old
Gary, my regular HF antenna for 80,40, 18, and 12M is an inverted
vee, fifty foot legs, apex at 40 feet, and fed with open wire line. I
use a tribander for 20/15/10, although I could also use the vee.
The K3's ATU matches the vee beautifully on all those bands, using an
external balun. I've
I'll vote for a K222XV
73
K1NR
On Thu, 10 Jun 2010 22:29:14 -0500
Radio Amateur N5GE n...@n5ge.com wrote:
On Fri, 11 Jun 2010 11:16:31 +1000, Jeff Cochrane -
VK4BOF
vk4bof.elecr...@gmail.com wrote:
Hi Jeff!
I also have the K144XV and find it to be a very good
option. I'm
really glad
Hi Gary,
I use a very simple inverted vee 41' total length which is not resonant on
any band, I have constructed it out of Coated-Flex-150 from qsradio.com
which is very flexible and tangle resistant and works well in trees, fed
with coax and very easy to get in the air and tunes 10 - 80 with the
John,
The behavior you describe sounds similar to the temperature sensitivity
problem (39C) that I had with my recently minted K3. Turned out to be a bad
encoder. Elecraft sent me a replacement, and it is humming along nicely
now.
73, Stan - KR7C
-
Stan - KR7C
--
View this message in
P.B. Christensen wrote:
Hopefully, it's still on the table for development
Eric's statement seemed to me to be as near to a definitive no it isn't as
you are likely to get.
It's a pity. It was a pretty unique selling point for the K3. The only other
transceivers offering this facility that
If you are comfortable disassembling the front panel, you can also check that
the encoder socket is making good tight contact with the encoder pins.
73, Stan - KR7C
-
Stan - KR7C
--
View this message in context:
Hi, Stan - I guess that explains why when the K3 was out at Elecraft, Dale ran
it thru 24 hours of temperature cycling. But that didn't recreate the problem
out there. The shack is in the basement, pretty cool operating conditions and
neither time did the failure occur during a long period of
Hi Chris:
I have a K3 and a BigIR. The problem with using a tuner with any SteppIR
antenna is that you want want to change the SteppIR controller frequency to
match your transmitter frequency which then changes the length of the
antenna. As you know, this is how SteppIR maintains good SWR over
Yes John, it's easy to replace. Even more, it's easy to test if the encoder
is the problem. By swapping the VFO A and VFO B encoders.
73 Val LZ1VB
Hi, Stan - I guess that explains why when the K3 was out at Elecraft, Dale
ran it thru 24 hours of temperature cycling. But that didn't
With the 80 meter coil option on the BigIR, you could see higher SWRs on
15
through 6 meters in the normal 1/4 wave mode. SteppIR recommends using
the
3/4 wave mode for those bands. This may help.
.with everything but wave angle
:-)
On all other bands, increasing the power level goes in 0.1W steps up 12watts
and then in one watt steps above this.
I'm sure this used to happen on 50MHz as well. However, now the power
increases in 0.1W steps to 8 watts and then jumps to 13W before increasing
in 1W steps. So I can't set an
That characteristic has been discussed here Roger. The driver generates
spurious signals between 8 and 13 watts, so the software makes the level skip
these powers until the 100 watt final kicks in at 13 W.
Willis 'Cookie' Cooke
K5EWJ
From: Roger Dixon
Roger,
That is the way it is - at least for the time being. The Low Power
amplifier is limited to 8 watts on 6 meters, as I recall because of IMD
performance.
Wayne has said he will do something to allow the KPA3 to begin above 8
watts on 6 meters, but I have no idea about the schedule for
John,
The disassembly is pretty straightforward. Though, if you didn't build your K3,
it might seem a bit more daunting. The process is just about like installing
the sub-receiver in an already built K3.
I would expect that Dale would have checked the encoder-socket integrity when
he had it
Probably me as I'm somewhat green with the K3. I've spent a good few hours
playing with one and been inside to add a DVR and for a nose around but am
now confused by something I thought should be straightforward.
I just added a DVR to a friend's K3 and having confirmed that as working
have
Don Wilhelm-4 wrote:
That is the way it is - at least for the time being. The Low Power
amplifier is limited to 8 watts on 6 meters, as I recall because of IMD
performance.
The IMD of my LPA is quite bad on 10m as well, at least if my KK7UQ PSK IMD
meter is to be believed. It's worse
I also would like to see this option! As solid state amps become more
prevalent,
more folks will be wanting to be able to adjust the power in that range to make
sure
they do not overdrive their amplifiers. VY 73, Lance
On 6/11/2010 4:26 PM, Julian, G4ILO wrote:
I would really, really like
Did you make sure that you also adjusted the Config menu for the filter
positions and respective widths? You can't just put the filter in without
telling the rig what you have just done. If you don't adjust that, ALL of your
other filters will now be wrong as well.
From:
Hi,
Yes I set the filters up in the config menu to reflect the bandwidths in the
FL1 to FL5 positions after the change.
Martin, HS0ZED
From: The Smiths [mailto:notforc...@hotmail.com]
Sent: 12 June 2010 00:05
To: hs0...@csloxinfo.com; Elecraft Reflector
Subject: RE: [Elecraft]
While disassembly is straightforward, there are a few helps that are
handy, such as removing the screw from the 2D connector on the RF Board,
that one is not intuitive.
Fortunately there a several mod instructions that detail the removal of
the front panel and the DSP board so you can get to
I would really, really like the option to disable this switching out of the
100W PA altogether. It seems to be an utterly pointless extra complication.
Part of the point is that the DAC used to create the signal at 15 kHz,
which is upconverted, is using fewer bits at lower output levels.
That's the same response I've received when asking for updates to his
Field Day logging software.
On 6/11/2010 5:51 AM, John K3TN wrote:
I sent email to N3FJP asking if he had any enhancements coming to better
support the K3 and he answered that he does not. So, it is pretty much live
with
No doubt the recent Es propagation has brought the following behaviour to my
attention...it's only evident on 10m for some reason:-
Screw in a PL259 type dummy load into ANT1 (KAT3) and deselect ATU. Press TUNE
(10w) and the indicated swr on the K3 is 1.7 to 1.8. Change dummy load to ANT2
and
Same here. I switched to Logger32 (a free, well supported, and very
powerful general logger) and never looked back. Importing ADIF contest
files from N1MM into Logger32 is a trivial task, and both applications
interface very well with the K3.
73,
Dave AB7E
On 6/11/2010 11:08 AM,
I'd like to obtain an XG1...might consider XG2 if the price is right.
73,
Dick - KA5KKT
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Post:
Starting to generate cash so I can place my order for the P3. I am selling
my LP-Pan (#354) and E-MU 2020 sound card. I have the original boxes and
all cabling (including 2 radio shack 1/4 to 1/8 interfacing cables). I am
asking $225 which will include shipping to continental US addresses.
I've found that some times the back panels on the K3's have not been masked off
with tape properly when they were powder coated. Therefore what happens is, the
SO239 connector on the back panel is not making a good ground connection, or
ANY ground connection to the chassis of the K3.
Take a
Hi Julian,
We switch the KPA3 out at lower power levels to optimize the drive,
ensuring a high carrier-to-noise ratio at lower-level stages.
In any case, IMD should be quite respectable on 6 m even with the LPA
by itself. If it isn't, we'd be happy to swap LPAs with you so we can
see
I use a Pelican 1060 Micro case. It's big enough to hold the KX-1, the
paddle and a pair of earbuds. It comes with a clear top and a solid top;
get the solid top, it has protective foam inside the lid.
If you look at Pelican's different size cases, you might be tempted to get
the 1040 Micro
http://www.flickr.com/photos/ak5x/sets/72157624253942974/
This is a collection of photographs from HamCom 2010 in Plano, Texas. It has
one more day to run Saturday June 11, 2010.
That new 500 Watt amplifier is impressive.
Bill Hammond-AK5X
wham...@aol.com
a...@mac.com
a...@sbcglobal.net
K3
Wonderful pictures, thank you! I'm excited for the new amplifier. I've
sold my 2 amps, paid off my ham credit card and waiting to order. Yes, I
know it will be a long time but...
Phil
Philip LaMarche
LaMarche Enterprises, Inc
p...@lamarcheenterprises.com
Stewart,
The K3ANT does not do a hard bypass. Instead it sets the
tuner to the memorized 50 Ohm : 50 Ohm position.
Since the tuner memories are by band and by antenna - plug
the dummy load into the ANT 1 position, enable the tuner and
hit the ATU Tune button. That will teach the tuner the 50
Hi Julian
The ADAT web page has not been updated in 2 years. Their marketing is almost
non existent. One would assume it is just an experimental platform like
HPSDR. Who is really going to sink 6000 dollars into an experimental project?
After the German magazine review identified spurious
Excellent photos Bill; just the best yet. Hopefully the P3 will be shipping
in a little over a month. We're really looking forward to it.
73, Fred, AE6IC, K3 2241
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Ok so I've never done RTTY via true FSK only audio modes... I have to
put in a fence this weekend so I won't be able to play this weekend but
I'm trying to get ready for FD...
So I've made an interface that consists of a couple opto couplers (one
for FSK and one for PTT)... I've got the radio
Hi Brett,
You might want to look at EXTFSK/COMFSK ... it's generally known to
work well with USB adapters...
http://mmhamsoft.amateur-radio.ca/pages/mmtty/ext-fsk.php
Also make sure no other application has the COM port open, and that
your FTDI adapter really is COM3!
~Iain / N6ML
On
When I got my K3, I was hot to get it set up on FSK. Somebody here
convinced me to try AFSK, and I was blown away by how simple it is, and
less complicated to set up. AFAICT, FSK offers no advantage.
73, Mike NF4L
Brett Howard wrote:
Ok so I've never done RTTY via true FSK only audio modes...
Brett
Go into device manager and change the COM number to something unused and
other than 3. As you know, many computers reserve or use COM3 in the
background for such things as modems.
73
Greg
AB7R
On 6/11/2010 3:54 PM, Brett Howard wrote:
Ok so I've never done RTTY via true FSK only
There have been several recent messages relating to
the K3's power output in the power range where the
radio switches between the exciter and the PA with
no change in power output. ... sort of a flat spot. (;-)
I wasn't very interested at the time and have deleted
them. If anyone has them,
installed it todayit works great
If you don't change direction you WILL arrive exactly where you're
headed!! Susan Meckley, Skipper W7KFI-mm AFA9SM USSV
DHARMA
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Iain actually pointed me in the direction of using the EXTFSK .dll
interface as the FTDI interfaces don't support any speeds less than 300
bps. EXTFSK uses the media timers to generate the baud rates at slower
speeds. Kinda stinks that you've gotta use windows timers as that was
the main reason
- Original Message -
From: Jim Miller KG0KP jimmil...@stl-online.net
To: Ken Kopp k...@rfwave.net
Sent: Friday, June 11, 2010 7:53 PM
Subject: Fw: [Elecraft] K3: incrementing Power level
- Original Message -
From: Wayne Burdick n...@elecraft.com
To: Ian White GM3SEK
I'm one of those guys that is a glutton for punishment... To me the
fact that FSK is more complicated and I've not done it before is the
actual advantage. I do see FSK as a method that is slightly less prone
to TX distortions. I built my interface using opto couplers and then
put in a few
Hi All,
A bit of a strange one here..
Short story, I have just built and installed a KPA100 internal amp for my K2.
All is going well with the set-up and I have been using fine with a multiband
vertical I have at home.
Problem is I put up an end-fed 1/2 wave vertical to use in a local contest
OK, to add to my last,
I've just tried with a different antenna on 40m. Again, once I engage the
KPA100, I get high SWR, power overshoot and a blown fuse. So it doesn't seem to
be antenna related but seems to be band related. 30m-10m is Ok. I don't have an
antenna for 80/160 so can't check.
David,
Is this a new KPA100 from Elecraft, or did you purchase the kit from a
previous owner.
What I am getting at is -- do you have the latest T/R switch components
installed in this KPA100?
Blue toroid cores at RFC1 and L16. If the toroid core at L16 is red,
you have the older T/R switch
Dave,
I was typing a reply when Don's message appeared, which
is likely the correct information. I can only add that the
parasitic oscillation is probably out of the range of your
antenna as indicated by the high SWR. The dummy load
doesn't care / know if the RF from the PA is on a correct
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