Since I installed the latest software on KSB2 I realize frequently low
batt message at the diplay of my K2.
Anyone got the same problem or have an idea?
Ser.Nr. 1020,
Greetings out of the snowy cold northern Bavaria.
73 de DG9NCL
___
I am next to embarrassed to ask this one!
I have just completed building my KAT2 for K2 SN4519. I have one
resistor, R6, left over and upon several rereads of the manual I cannot
find a definite instruction to install it. I know where it goes, of
course, but is it assumed that you install
Find installation of R6 as follows:
Page 17, last step before the paragraph: Power Calibration (R1 and R2)
Congrats and good luck.
73, Joe, aa4nn
I have just completed building my KAT2 for K2 SN4519. I have one
resistor, R6, left over and upon several rereads of
... recently I gave GU4WRP some tips on building his new
K2 kit so that it looks really smart ...
... on seeing it, I must agree that it looks fine ...
... especially the GOLD-PLATED wire which he used for
the test-point ground connections ...
... I've no solid-gold wire handy, so there's NO
I expect there is really nothing wrong.
It is most likely that you bumped the 'display voltage' slide switch on the
top of the Control Board during the firmware install. Check and move it
back to the INT position. I believe it will 'cure' the problem.
Newer K2s (3000+) have a jumper instead
William,
Re-check the PLL range on SN 4513 as instructed in the manual. From the
data you provided, I believe your range is too small - the minimum range
should be 9.8 kHz, and yours appears to be only 4.05. Yes, the first thing
to try is changing L31 to 12 uH. Also check to be certain you
Some ask for more info.
With the probe in TP2 and CALL on FCTR the reading jumps fast around 4.620 mc
Then the voltage on RP6 is stable reading 6,48V
Pressing BAND -
The readout is 4,917 mc and stable but the voltage on RP6 has jumped to 8,0V
I have a K2 rig here for repair and this baby has
Hi Yall, has anyone copiled a commplete list of the K2 push buttons. Lets
call it PB 1. TAP, PUSH, PUSH, or it may be in another order. or just plain
PUSH. I have a memory span makes Jupiters orbit seem speedy. I do remember
to get to meals on times. The almighty does take care of some
I recall using Rhode Schwarz test-sets for filter
alignment, also Tektronix tracking-generator and
spectrum analyzer combos. Further back I recall
similar devices called wobbulators used for IFs.
- when was the technique of using wideband noise
followed by audio or video spectrum analysis
I just finished up Assembly Part II, getting ready to start Alignment and
Test Part III. When I turn on my K2 the display shows Elecraft and then
flashes between PO 1 and SPD 15. NO INFO messages, the dummy load gets
warm. No Smoke so I guess I can count my blessings. I will be searching
the
Peter,
My guess is that there is a bad solder connection somewhere in the BFO area.
The fact that things stabilize when you touch something in the area strongly
suggests something wrong with the soldering.
Pressing BAND+, BAND- when in CAL FCTR should swing the voltage between 0
and 8
I know we must all thank N0SS for suggesting this
tecnique using the Spectrogram program for K2 filter
BFO setting, and also for providing a circuit and
pcb for a suitable noise generator. -- A LOT better
than the other methods I mentioned above.
I may have come up with using the noise
KFL1-4 surplus to my needs. Completely built and aligned covers 40-30-20-15
meters. Comes with crystals for 10MHZ WWV RX and 17 meters, manuals and
instructions. I will ship to CONUS for $110.00, can accept PayPal or money
order.
73, Wayne K8FF
Don and all
I did carefully removed L33 and both crystals. Replace L33 but with room to
solder both
crystals on the solder side. When solder 1 crystal at the time they both give
the wanted
reading and they are stable. But when both are solderd its jumping around.
My guess is that there is
I will pass this along for what it is worth.
First a bit of background.
a) The MFJ breaks the audio path from the sound card to the mic unless
PTT
is activated. This is a good thing.
b) The MFJ provides an optically isolated CW keying circuit. This too
is a
good thing.
Norbert Roedel wrote:
Since I installed the latest software on KSB2 I realize frequently low
batt message at the diplay of my K2.
Anyone got the same problem or have an idea?
Ser.Nr. 1020,
Did you accidentally bump the slide switch S1 near the top of the control board
when you had the
KX1 Srl 904 with 30m, ATU and Paddle option all fitted.
I built this in late October to take with me to Bermuda.
It tested flawlessly first time at all stages.
In two weeks of very casual operating from VP9 it made 95 contacts -
including 5 JA's LP on 30m.
It is absolutely pristine with no marks
On Sun, 16 Jan 2005 14:27:51 +, Steven Gibbs wrote:
I recall using Rhode Schwarz test-sets for filter
alignment, also Tektronix tracking-generator and
spectrum analyzer combos. Further back I recall
similar devices called wobbulators used for IFs.
- when was the technique of using wideband
Has anyone designed and made an Un-module for the KDSP2 or KAF2? KE1L's
site does not list one.
http://w5big.home.comcast.net/K2_Un-modules.htm
I need to do some troubleshooting and want to avoid removing/replacing board
parts when I remove KDSP2 out of circuit. Tnx.
73/Gil NN4CW
K2
Thanks guys!
(not only) Jim wrote
Make sure that the Voltmeter switch (S-1) located on the top left side of
the Control Board is in the INT(12V) position. It is very easy to bump it
into the EXT position while installing the KSB2.
73
Jim Younce K4ZM
K2 SN: 18
What a crazy
Earl
Try _http://www.niftyaccessories.com/Elecraft_RefGuide.htm_
(http://www.niftyaccessories.com/Elecraft_RefGuide.htm)
Dan NØTK
Highlands Ranch, CO
K2 #3652
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Earl, W7TK wrote:
Hi Yall, has anyone copiled a commplete list of the K2 push buttons. Lets
call it PB 1. TAP, PUSH, PUSH, or it may be in another order. or just plain
PUSH. I have a memory span makes Jupiters orbit seem speedy. I do
remember to get to meals on times. The almighty does
My initial CQ on twenty meters was quickly picked up by none other than
another KX-1 ! Thanks to Dan and his mighty attic dipole, KX-1 nr 959 logged
its first QSO -- thanks OM!
The rig works beautifully despite this op's goofy mistakes ;) Somehow, after
being s careful, I still managed to
Good Evening Steve,
I cannot remember reading anything about the use of a noise generator for
tuning filters, but back in the early '50s we used to use a noise
generator plus spectrum analyser to align 30MHz IF strips used in radar
receivers. Also during the design of filters etc. We simply
-Original Message-
In my case, I want to think of the birdie living in my K2/100 as a
substantially bigger one, a turkey (with the K2100 enabled -power 11w) at
28.266 (USB).
--
This birdie is an image of the 18432 KPA100 oscillator since 18432 + 2*4915
= 28262.
Gil,
The 'un-module' consists only of 2 wires - pin 1 of J1 connects to pin 1 of
J2 and pin 2 of J1 connects to pin 2 of J2.
I just use 2 bent wires (component leads) between the 2 headers. Of course,
a piece of PC board with pins in the correct places would be more
convenient - perhaps I
I would like to take an opportunity to offer an apology to all on the reflector
for my rant of a week or so ago concerning my inability to get this K2 to work
as it should. The rant was totally out of line. So with that being said I
decided to take some time off from the K2 and come back when I
I was wondering if anyone on the reflector had tried building the
Calibrated Noise Source described starting on Page 25.27 of the 2005 ARRL
Handbook. If so, has anyone tried aligning a K2 with it?
The Handbook noise source looks like it would be more expensive and harder
to build than the
Evening Sverre,
Agree with what you say, but I get a strong birdie at 28.276 without the
KPA100 on. This one I think is LO + BFO , that is 23.361 + 4.915 = 28.276,
nominal freqs. Being first order it is also strong. Other products + mLO +/-
nBFO also converge here, but are not a problem in my
The ice storm has abated here in Oregon. I am not sure what the valley
folks are experiencing but the icing conditions have given way to rain at
2000 feet. My antennas are clear and still in the air. They are also
working on 10 and 15 meters this morning. 10 has since gone away but 15
Hello.
Hot on the heels of my previous report, here comes the next one relating
to the first test phase.
Executive summary: it works! Unit came up with E10 as expected, display
brightness and timeout setting are ok and led shines pretty brightly.
Digging a little deeper, however, there are
Mostly everything works fine, but...
1) Still appears to be a problem with the AGC/S-meter calibration because the
S-meter is continuously pegged on rightmost LED.
The RF Gain control appears to have no effect although I've confirmed that R4
(front panel RF Gain control) seems to function
Since I'm primarily using my KX1 in the shack, has anyone devised a nice
stand for it? I'd like to be able to look at those cool red LED's...
Seems like a simple stand might do the trick and wonder if anyone has come
up with the perfect solution? Like maybe the KXS1 :)
Since I use an external
Ken H wrote:
While setting up a dipole antenna tonight a question come up while discussing
the tuning with myself: Which is the most effective antenna -
understanding it will be matched with a antenna tuner, either the internal
autotuner or an external manual tuner - a dipole type antenna with
Morning Sverre,
OOOPS How stupid can I get. Of course you are 100% correct about VFO + BFO.
Thank you for the information about the KPA100 modification.
I fear that I am going to have to take a better look at the spurii here as
some are quite intrusive, and some have changed since my last quick
Gary,
AGC/RF Gain problem:
With the Front Panel, Control Board and RF Board assembled together, check
the resistance to ground from Control Board P1 pin 6 to ground. It should
read about zero ohms with the RF gain at full clockwise and somewhere in the
vicinity of 4 to 5 K with the RF gain
Ed Palmer wrote:
On the RF board on my K2 in the 20/30 BPF area I can inject a signal on 20
meters either side of C22 and between C22 and C24. I'm not however able to
inject a signal between C24 and C25.
C25 is shorted to ground on bands opther than 20 or 30 by K4B. Perhaps the
relay is
Ed,
BFO problem - be certain you have the correct capacitors at C173 and C174,
then check the varactors D37 and D38 - they should be the smaller ones -
1SV149 type. As a check on the voltage swing being applied to the
varactors, monitor the voltage at Control Board U10 pin 14 while in CAL
While setting up a dipole antenna tonight a question come up while discussing
the tuning with myself: Which is the most effective antenna - understanding
it will be matched with a antenna tuner, either the internal autotuner or an
external manual tuner - a dipole type antenna with a resistance
Tom,
The 'problem' has already been fixed - the later K2s use a jumper instead of
the switch. For those having older K2s, simply removing the switch and
adding a jumper will disable the switch function. I don't think many folks
use the external voltmeter function of the K2 - but I have not
Ken,
I would rather deal with the antenna having the higher 'R'. The reactance
can be easily tuned out with a capacitor or an inductor, but the return path
losses (usually ground loss) on the antenna with the low resistance become a
higher percentage of the total, and the antenna having the
On the RF board on my K2 in the 20/30 BPF area I can inject a signal on 20
meters either side of C22 and between C22 and C24. I'm not however able to
inject a signal between C24 and C25.
With the antenna connected I can get a signal across C24 by either jumping
across its leads on top of the
Don wrote:
A calibrated noise source is not necessary for aligning the K2 filters -
most any source of noise will do. I have even heard that some folks were
successful with a bit of wire placed close to a lighted flourescent lamp.
-
Ordinary background QRN on 80 or 160
-Original Message-
Agree with what you say, but I get a strong birdie at 28.276 without the
KPA100 on. This one I think is LO + BFO , that is 23.361 + 4.915 =
28.276,
nominal freqs. Being first order it is also strong. Other products + mLO
+/- nBFO also converge here, but are not a
I wonder if anyone HAS NOT accidentally bumped this switch. Anyone have a
solution for future versions? This seems to a be fairly simple problem to
fix, but its certainly happened to quite a few of us.
Tom
WB2QDG
K2 1103
-Original Message-
From: Vic Rosenthal [EMAIL PROTECTED]
To:
Tried a couple of times to check in on 14.050 but no go.
When Tom, N0SS, first checked in he was 599. When it was turned back to
him later in the net he was in the noise.
Kevin..you were 579-599 at times I was hearing you via 2 paths...kind of a
self-QRM.
W0CZ and WU5X were both 599 here in
Don:
Thanks,
Steve
At 08:23 PM 1/16/2005 -0500, you wrote:
Steve,
A calibrated noise source is not necessary for aligning the K2 filters -
most any source of noise will do. I have even heard that some folks were
successful with a bit of wire placed close to a lighted flourescent lamp.
Ken:
Couple of points to consider:
1) Is the complex impedance measured at the antenna feed point, or at the
transmitter end of the transmission line? As you are no doubt aware, as you
move along the transmission line from the load to the source the impedance
of the transmission will roll
Andrea wrote:
I have a KX1, not a K2, however the point is taken. Nicola told me that
meter was low-voltage and okay for solid state. How do I verify that
it is so? And, most importantly, how do I check whether any damage was done?
Ok, I'll quit worrying about the resistance values and get a
Bill,
The part numbers and Yaesu phone number is on my website www.qsl.net/w3fpr -
look at the article dealing with an FT900 knob on the K2. The price for the
knob was valid at the time I wrote it - but may have changed.
Just one other thought - If you only want the rubber tire, the FT900
In a message dated 15/01/05 23:36:15 GMT Standard Time, [EMAIL PROTECTED]
writes:
I know there was a recent discussion in the forum about this birdie singing
at the low end of the 10m band, but did not recall seeing any definitive way
to kill it.
In my case, I want to think of the
IMPORTANT!!! Please, do not use an analog multimeter for testing resistance
unless it is specifically designed for solid state. You didn't say so, but
many meters, including those that use a simple 1.5 volt battery for the Ohms
tests, can destroy a great deal of the solid state components in your
A friend of mine has an FT900 know on his K2.
Great change!!!
Anyone know where I can get one or what the part number is?
tnx
72
Bill
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Since the Tsunami in the Indian Ocean, my KX1 has become the centerpiece of
discussions with non-hams here in Forest Grove (we're about 17,000 people in
a typical western town dating back to the late 1800's, about 30 miles west
of Portland).
We live in a region threatened by tsunami's,
Steve,
A calibrated noise source is not necessary for aligning the K2 filters -
most any source of noise will do. I have even heard that some folks were
successful with a bit of wire placed close to a lighted flourescent lamp.
If you have other needs for a calibrated noise source, you can
Good evening,
Both nets were productive this evening. 20 meters was very quiet and
40 meters was too. 20 was open from Nova Scotia to Georgia to Texas to
California to North Dakota and Minnesota. Colorado and Missouri had
representatives also. A couple folks had their new K2s to show
To those of you who use the searchable archives at
http://www.ac6rm.net/mailarchive/html/elecraft-list/
If you experienced about an hour of unavailable archives this afternoon,
I apologize. I just moved it to a bigger, meaner box. It was also
upgraded to a new version of the software.
If
No pitfall that I can see, Steve. The noise bridge should be FB! All you
want is a noise source that is constant in level over the range of a few kHz
that is strong enough to see on your display.
The kits are a great convenience. Convenience always cost a little extra
G. One time when I got
My new site is http://www.hamsoftware.org
Should be a much faster and more stable website.
I have a vanity callsign 'on order' from the FCC. When that is approved I
will have to change the old site.
73,
Mike AB6CV
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Hi John,
i use a 3M C-45 Post-It Note Tray holder for my KX-1
It has a 10 degree angle.
The shallow 10 degree angle allows use of the KXPD1.
Paul w0rw
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