t yourself solution - although there is no soldering
for either one.
At 12 to 15 watts, the K2 plus the KAT2 does a great job - as does the
KX3 (or KX2 with the low power tuner.
As I said, if you need 100 watts, go for the KXPA100 with the KXPA100 ATU.
73,
Don W3FPR
On 6/20/2024 6:43 PM, Larr
serial number will be helpful.
You might also contact Elecraft support, and Dave W8FGU can likely help
as well - he is the official contact for support on the legacy gear (K1,
K2, KX1).
73,
Don W3FPR
On 6/21/2024 2:24 PM, Oscar Castillo wrote:
hello everyone,
Several years ago I bought my
the menu.
73,
Don W3FPR
On 6/30/2024 4:44 PM, Mike Short wrote:
I have a partially assembled 20/40 kit I acquired. The directions say to
have band 1 the lowest frequency but this one is reversed. 20 is band 1 and
40 is band 2. What may be the issues with leaving it like this
n find the full explaination in the full firmware release notes.
It was some time ago,, so I suggest searching the release notes for
PTT-KEY to find it.
73,
Don W3FPR
On 7/4/2024 12:23 PM, Frank Stein via Elecraft wrote:
Just clarify this strange behavior.
I use the Config Menu to set the PTT-
either use TEST mode or simply turn VOX off during the
computer boot time.
73,
Don W3FPR
On 7/4/2024 6:54 PM, Frank Stein wrote:
Don,
Bingo. That, in fact, was the problem. Turning on "Unsafe" solves the
problem. I use cwtype which sends to the com port and doesn't poll
the comm
he K2.
The serial number does not matter - for this procedure they are all the
same.
The mic configuration header plugging can be found in the KSB2 instructions.
73,
Don W3FPR
On 7/6/2024 7:40 PM, Larry Boekeloo wrote:
Hi everyone
I need to look at the microphone settings in my K2.
After reading
stays near zero volts, then one of the drivers to Q9 gate has failed.
73,
Don W3FPR
On 7/13/2024 1:54 PM, Chris wrote:
Hello,
My K2/100 has an issue with the PA KEY (J7). With the key down, it has
about 350k ohms as opposed to the specified 3 ohms. Will replacing Q9 fix
the issue, or can there be
the cable was not damaged during shipment.
That is a good start on getting a handle on the problem. Let us know
the results of your tests.
73,
Don W3FPR
On 7/22/2024 3:39 PM, eric norris via Elecraft wrote:
Hi Gang,
I have a new-to-me KAT100 I'm trying to get working. It is connect
Pete,
That is normally called 'power hunting'. Its usual cause is not driving
the K3 audio to an adequate level. You should have 4 bars solid on the
ALC bargraph with the 5th bar flickering.
73,
Don W3FPR
On 7/26/2024 5:21 PM, Pete Smith N4ZR wrote:
I wonder if anyone else has
Bill,
Not a menu problem. Check the soldering at FP U3 pin 16 as well as all
of U2 and RP1.
What does work? That info will assist in properly diagnosing the problem.
73,
Don W3FPR
On 8/7/2024 2:23 AM, William Santos via Elecraft wrote:
My K2 (SN 04507) with K100, SSB module, etc. seems to
Chris,
Look in the K1 manual (download if you do not have a printed version)
for VFO calibration.
This requires you to spread or shrink the turns on L1. Check the number
of turns on L1 to be certain they are correct.
73,
Don W3FPR
On 8/23/2024 4:24 PM, Chris wrote:
Hello,
I picked up a
Corky,
If you can adjust the power supply output, set it to 14.3 volts and see
if the problems go away.
Measure at the K3, not at the power supply.
Eliminate your power distribution system and connect the K3/P3 direct to
the power supply.
Let us know if that helps.
73,
Don W3FPR
On 9/1
Bill,
If you add the Clifton Labs Z2 buffer amplifier (now sold by DX
Engineering) to provide an IF output from the K2, it will work as a
spectrum display. It will not report the K2 VFO frequency as it does
with the K3.
73,
Don W3FPR
On 1/24/2023 3:03 PM, William Santos via Elecraft
Joe,
The complete syntax for those commands can be found in the Programmer's
Reference.
73,
Don W3FPR
On 2/13/2023 3:04 PM, Joe K2UF wrote:
Not sure if this the correct address for this question. I am trying to send
cammands to the P3 and K3 from a VB,NET program. I tried se
the IRS - those are scam calls, do not
give them any information.
73,
Don W3FPR
On 2/14/2023 5:57 PM, Fred Jensen wrote:
Ummm ... be careful to not overplay this. "Hacked your email" is
usually taken to mean "breaking into your email client." That's not
really what i
William,
At least 20 amps is good, a bit more for safety.
Note that the power cord should be fused for 20 amps (at the PS end).
73,
Don W3FPR
On 3/28/2023 3:09 PM, William Santos via Elecraft wrote:
What is the recommended power supply amperage for a K2 with K100 power amp
installed
us trying to guess from just a subject line.
73,
Don W3FPR
On 4/2/2023 6:31 PM, Jim Campbell wrote:
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post
Dave,
What power is displayed on the KPA500? The KPA500 would fault if indeed
the K3s is putting out that much power. The KPA500 power bar is pretty
accurate, just a bit coarse in its increments.
I think a power calibration is in order for the P3 power indicator.
73,
Don W3FPR
On 4/7
The KX1 serial number should be located inside the top cover - see the
manual.
73,
Don W3FPR
On 4/22/2023 11:05 AM, kx8xx via Elecraft wrote:
please73 de KX8XX Mark
Rich,
Try this -- bend the pins in just a little bit and try it that way. You
don't have to bend them very much and they will straighten out when you
get the job done.
73,
Don W3FPR
On 4/25/2023 10:49 PM, Richard Hill wrote:
I'm installing a new but old KXV3A board into the
current draw will be less.
73,
Don W3FPR
On 5/6/2023 2:30 PM, Bill Gillenwater wrote:
Current setup.
K3 with P3 early serial. Back to factory for complete update. Gold
Pins etc.
Today K3 shut down.
Found blown 15 amp fuse in ground side of power supply cable
Power supply is MFJ 4035MW.
Have
Jim,
At any time did you power on the K2 when the temperature was below 0 deg
C? That is one way to change the CAL TPA value.
73,
Don W3FPR
On 5/25/2023 3:03 PM, Jim KO5V wrote:
This problem my be solved.
I was reading some older posts from Don Wilhelm, and found a reference to setting
Evert,
Contact Elecraft support. At one time (long ago), Eric said that those
concentric knobs would be replaced at no cost to the customer. Perhaps
that directive is still in place.
73,
Don W3FPR
On 5/25/2023 5:23 PM, ev...@pa2kw.com wrote:
Anyone here who knows the Mouser/Farnell/Digi
.
He had mentioned that possibility some time ago, but I don't know if it
materialized.
73,
Don W3FPR
On 6/17/2023 1:15 PM, K4HYJ via Elecraft wrote:
Hey folks.
I want to try and tackle a more challenging kit build. I built my K3S back
in Oct 2018 and it was pretty easy. Same for my
ceramic with both leads spread out to make the
connections.
73,
Don W3FPR
On 6/27/2023 5:59 PM, Allan Forster wrote:
Hi,
I found that the actual power out did not match my setting, eg. I set 10 watts
but power meter reads 14 Watts.
Simple to calibrate the auto ATU or so I thought. While adjusting
board and you
must re-attach R36 on the bottom of the RF Board.
73,
Don W3FPR
On 7/12/2023 5:06 AM, Paul Barlow wrote:
Dear Elecrafters,
I'd like some advice before I go delving into something and making it worse! I have
taken my 4 band K1 out of storage. It is set up for 40m, 30m, 20m an
rts at the 5th
bar, so if they meant set it for no ALC, that may have been what they meant.
Yes, not enough audio will cause power hunting.
73,
Don W3FPR
On 7/20/2023 5:16 PM, Pete Smith N4ZR wrote:
I've recently started operating FT8, and on advice from other K3
users, have been adju
Pete,
Do you have anything plugged into the Line-In jack?
That will disconnect the audio in connection through the USB.
73,
Don W3FPR
On 8/17/2023 2:13 PM, Pete Smith N4ZR wrote:
I'm trying to be a good guy by giving my club a few QSOs in Saturday's
NAQP SSB. This is the first
73,
Don W3FPR
On 8/29/2023 3:25 PM, ken.k...@gmail.com wrote:
Hi Ray. Either I was unclear in my description, or it was mis-read. According
to the display of the amplifier, it is ALWAYS set for the 60 meter band,
regardless of what band I am actually
,
Don W3FPR
On 9/1/2023 7:42 PM, jerry wrote:
On 2023-09-01 12:55, Michael Carter wrote:
Hi Jerry,
There is no simple access to band data in
the K2 unless you want to reverse engineer
the AUXBUS protocol.
*** Considering that it's probably a low-speed
async protocol, that might not be that
connecting a DL to one end and an antenna
analyzer to the other. Try that instead of random swapping. Toss any
bad cables in the trash.
73,
Don W3FPR
On 9/17/2023 4:53 PM, Pete Smith N4ZR wrote:
Suddenly I've begun getting these messages after transmitting,
especial;ly on 10 MHz. Only change
frequencies are dependent on the center
frequency which can be adjusted during the frequency calibration procedure.
73,
Don W3FPR
On 9/24/2023 6:57 PM, Chris wrote:
Hello,
I have a K2 with its USB off by about 1.9kHz. This K2 was built by someone,
and I am the third owner. How do I calibrate it
rather Q19, but Dave at
Elecraft support can tell you more details.
73,
Don W3FPR
On 9/25/2023 9:19 AM, Allan Forster wrote:
Sorry, made a mistake and used the wrong frequency while attempting to set up
the VXO.
Now the voltage at R30 is 4.3volts and does not change when adjusting L30
Allan,
Just as I indicated in my last post, set L30 slug midway and then adjust
the spacing of the red turns on T5 until you get close to 6 volts, and
then adjust L30 to finish up.
73,
Don W3FPR
On 10/3/2023 6:16 AM, Allan Forster wrote:
Hi,
I received a replacement variable inductor (L30
-RX to see the filters in the main RX and remove the
sub-RX cover to see the filters installed.
73,
Don W3FPR
On 10/16/2023 1:55 PM, Dave wrote:
I recently purchased another K3 that I believe was Factory Reset prior to the
sale. Is there a way to determine which, if any, optional filters are
Jim,
It is doubtful that will work if the K3 has been set to factory defaults
by EEINIT.
73,
Don W3FPR
On 10/17/2023 11:59 AM, Jim McCook wrote:
Dave,
Open the K3 Utility and click on Calibration. Scroll down to
Configure Crystal Filters. The top line shows the various bandwidths
of
upgraded the firmware
to 2.xx. Your K2 likely came with version 2.xx.
Hold any button while powering on and the firmware level will be briefly
displayed.
73,
Don W3FPR
On 10/26/2023 7:25 PM, Dr John Farmer via Elecraft wrote:
Hi All,
I’m re-doing the dial calibration of my K2 #6998 which I built
The K2 firmware level will be briefly displayed if you hold a button in
while powering on.
73,
Don W3FPR
On 10/28/2023 7:57 PM, Michael Carter via Elecraft wrote:
Hi Mike,
You mentioned that you jumped through
all the menu hoops to no avail. Do you
know which version of firmware 2.04 you
Richard,
The K3 (and K3S) does not have capability to operate SPLIT without the
subRX. The Kx3 and KX2 does have dual Receive, but only over limited
range (12 KHz If I recall correctly)
73,Don W3FPR
On 11/5/2023 9:12 PM, Richard wrote:
I am having trouble understanding both the manual and
Dave,
You do not have to return the QSL cards! Yes, even the K2 will run
split. You just cannot receive both frequencies at the same time. I
have the subRX and always turn it on for a SPLIT QSO.
My how one forgets after a bit of non use - it gets worse with age!
73,
Don W3FPR
On 11/5
to
that possibility.
73,
Don W3FPR
On 11/7/2023 10:31 AM, Pete Smith N4ZR wrote:
I send a few characters of CW into my Carolina Windom on 40M and after
a delay (1-5 seconds after I stop sending) the K3 flashes a HI CUR
warning, and the audio gain is reduced significantly. Touch the AF
gain
Doug,
You will have to use a switch that changes all 15 conductors. VGA
switches may not implement all conductors and worse yet, some may be
connected together to common (ground).
73,
Don W3FPR
On 11/13/2023 3:18 PM, Doug Millar via Elecraft wrote:
I am trying to use my K3 and a Yaesu
wn my expectations. When the number got over 10, I became
anxious and tried to get them out as soon as possible, but not
compromising my goal of making all repairs complete and tested when done.
73 and have a great Christmas (0r Happy Holidays if you prefer),
Don W3FPR
On 12/15/2023 5:46 PM,
longer available.
It does have the KAF2, but not the KDSP2.
If it will go to a radio museum, it will be donated - otherwise make an
offer. Money back within a month if you are not satisfied.
73,
Don W3FPR
On 12/26/2023 5:58 PM, Wayne Burdick wrote:
Season's greetings from the Left Coast.
, and they will send them to you.
73,
Don W3FPR
On 3/26/2024 10:21 AM, Joel Black wrote:
My K2 VFO knob spins a little more freely than I'd like. I took it off and
looked at the felt and it appears pretty thin and worn.
I really thought about using the felt rings that you can get for 1
wire it point to point with only a board (or cardboard)
to hold the components. I built one with no board at all (Wes Hayward's
Micro Mountaineer style), and it works fine.
73,
Don W3FPR
On 3/30/2024 4:41 PM, Bruce Rosen wrote:
I see that Elecraft no longer sells the N-GEN wide band
A 1.5 KW external wattmeter is much less expensive than a major KPA500
repair - I would not risk it.
73,
Don W3FPR
On 4/3/2024 6:15 PM, Mike Murray wrote:
If a KPA500 is in standby, can it be used to determine power output from
another amp by feeding the signal thru the KPA? I don&#
,
Don W3FPR
On 4/4/2024 4:21 PM, ev...@pa2kw.com wrote:
I changed the PTT-KEY setting in my K3s (K3+KIO3B) to DTR-RTS, but powering off
it returns to OFF-OFF.
Can this be stored permanent or am I missing something?
__
Elecraft mailing
ramp up and produce
"power hunting" at the output. More than that, you will go into
distortion (ALC Compression) which will not produce the cleanest signal.
The Fred Cady books also agree on that.
73,
Don W3FPR
On 4/6/2024 3:03 PM, Fred Jensen wrote:
Hmmm ... I thought that the ALC
Bob,
5th bar flickering is no ALC, but 5th bar solid indicates ALC action.
ALC starts at 5th bar solid.
73,
Don W3FPR
On 4/6/2024 3:41 PM, Bob McGraw wrote:
Fred et al:
Based on Don's information, 4 bars on solid, 5th bar flickering, 6th
bar is beginning of ALC. Also I seem to reca
f the internal 144 transverter is still
available, but the TRN menu will properly select and activate an
external transverter.
Yes, the new synthesizer is a very worthwhile investment, you will not
be disappointed.
73,
Don W3FPR
On 5/3/2024 6:25 PM, Justin Mann via Elecraft wrote:
FOlks,
I’ve
+30 dB will give you
trouble, lesser signals not so much.
This was discussed in detail many years ago after the K3 was
introduced. You may want to comb the K3 archives to learn more about
the roofing filters and what they accomplish.
73,
Don W3FPR
On 5/3/2024 6:25 PM, Justin Mann via Elecraft
of the connector.
73,
Don W3FPR
On 10/22/2024 6:56 PM, Mark Cohen wrote:
Hi folks,
I recently purchased a Yaesu SSM-17A
<https://www.amazon.com/Yaesu-Standard-Microphone-SSM-17A-Replaces/dp/B089YW2BP9>
speaker microphone hoping to use it with my KX2. I don't need the up/down butt
The P3 (not the PX3) can be used with either the K3 or K3S.
The P3 has an IF input, but the PX3 has IQ (audio) inputs.
73,
Don W3FPR
On 9/24/2024 4:56 PM, Michael Needham wrote:
Can someone enlighten me ,can a PX3 be used with a K3 (just a regular K3
not the s verson just one stage below the
ne and the antenna itself. Often compromises must be made. In
the case of the AX1 antenna, the radiator not only is a short length for
the operating frequency, but also has potential loss in the coils in the
base of the antenna.
73,
Don W3FPR
On 9/30/2024 6:11 PM, Rick nk7i wrote:
Jim,
I sta
want
to build one, order it, and you will have a state of the art transceiver
at a decent price. The addition of a KXPA100 will bring it up to 100
watts (with the ATU) will give you a great 100 watt station rig.
Bottom line "support is different than ability to repair".
73,
Don W3FP
tton after the change was the most common - powering down
after making the change with no other actions would result in the same
behavior.
73,
Don W3FPR
On 6/14/2025 2:27 PM, Paul Ecker wrote:
I recently acquired a K2, serial #04028. This K2 has MCU 2.04P and IOC 1.09
When it arrived the sidet
, tap the DISPLAY button to change
between U6-25 and U8-4. Exit the menu when you hear sidetone.
Your sidetone source must be U8-4 since the KPA100 is installed.
Upgrading the 2.04R firmware will cure it for all time.
73,
Don W3FPR
On 6/29/2025 5:05 PM, Terry via Elecraft wrote:
Hello All
ready been done.
73,
Don W3FPR
On 6/30/2025 4:00 PM, ars.k...@gmail.com wrote:
I dusted off the old K2 for FD (S/N 2619) and tried using the internal
keyer. The InP setting is for PdLn but I only get a solid tone when I use
my paddle. I used my WinKeyer for FD with the K2 setting on Hand and it
that same page, you will
see a bold information note stating "Do not attempt to pre-install parts
supplied with the K60XV option. The K2 must be completed and tested first."
73,
Don W3FPR
- Original Message -
I'm at the module pre-installation step of my K2 and am confu
part of the standard Elecraft KSB2 for new builds
(but Elecraft specs it at 2.3 kHz at -6 dB), and I would recommend that
filter for more voice power in the passband (and it is a bit flatter than
the 'original' filter from Elecraft).
73,
Don W3FPR
- Original Message -
My K2
r computer screen.
Apologies to those who really want to press 'real' buttons (and that
includes me - I am quite hardware oriented. but I don't think that a 'BIG'
K2 panel is feasible anytime soon).
73,
Don W3FPR
- Original Message -
I wonder how much of
to review until you find reasonable answers.
73,
Don W3FPR
- Original Message -
On the recent topic of SSB audio reports, I got report of "off frequency"
and "too low" on 17M USB today and have not found the problem yet. RIT
and XIT were off and 15MhHz WWV was within
your IF center frequency is off to one side of the average.
73,
Don W3FPR
> -Original Message-
>
> I have enough BFO range as described in the manual and am able to reach
> 4912.97 on the low end. Unfortunately, while that is low enough for me
> to center the RTTY filters on 1
would control the input level
to the transverter when the low level output is selected.
73,
Don W3FPR
> -Original Message-
>
> On a related subject, ff you have a KAT100 (not likely if you are using
> a transverter) the Vrfdet line from it takes precedence over the KAT2 or
>
dB = 10 log (P2/P1)
For your example of 5 watts to 100 watts, is an increase of 13.01029996 dB -
pardon the rounding but that is all the digits my calculator shows :>).
73,
Don W3FPR
> -Original Message-
>
> How would one calculate the amplifier gain (in dB) required to g
half turn away.
73,
Don W3FPR
> -Original Message-
>
> I'm in the process of aligning the transmitter on my K2 #4778.
>
> The manual says to peak pairs of slug tuned coils and variable
> capacitors on the various bands, with the power control set to 2.0
> watts.
t they are
related under fault conditions.
73,
Don W3FPR
> -Original Message-
>
> One of the relays in my KAT2 is stuck or a relay contact is shorted. When
> you select antenna 1 it is ok. When you select antenna 2 both
> antennas are
> selected (bad), and the indi
/minus the modulating frequency.
73,
Don W3FPR
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Behalf Of Gerhard Schwanz
> Sent: Friday, April 01, 2005 4:25 AM
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] K2 SSB problem
>
>
> Hi
load can be easily checked with an antenna analyzer, or even a
simple 50 ohm SWR meter.
73,
Don W3FPR
> -Original Message-
>
>
> I just finished building the KAT2 internal auto antenna tuner for my K2.
> I don't yet have access to an external wattmeter, or RF probe, so
visible
after the bottom cover is on anyway!)
73,
Don W3FPR
> -Original Message-
>
> On Fri 01-Apr-05 at 1152 EST, Mike Markowski wrote:
> > [...] must put tape over the prewound L33 toroid to prevent it from
> > contacting the chassis. [...]
>
> On second though
k the connection of your probe to the Control Board -
the shield should be closest to the left side panel - should you have it
backwards, it will behave as you have described.
73,
Don W3FPR
> -Original Message-
>
> OK, I got to p.60. Plugged in the freq. probe, got it
> to TP3, did t
er to put the
lockwasher next to the standoff on the conrol board rather than 'fiddlin'
with a lockwasher between the standoff and the board when putting the
assembly together.
73,
Don W3FPR
> -Original Message-
> KAT2 manual, Rev D, March 22 2001:
>
> Page 6 instru
are correct, measure the sources of 8R and
8T at the collectors of Q1 (8T) and Q2 (8R) on the Control Board. If both
are near 8 volts at the same time, you have a problem with the controlling
circuit in the base of Q1.
Let us know what you find and we can proceed from there.
73,
Don W3FPR
the
holes at Q10 on the RF board later. I beileve that will fix your problem.
73,
Don W3FPR
> -Original Message-
>
> Thanks for the reply, Don.
>
> D6 and D7 are oriented properly.
>
> I am measuring 7.94 volts on the collector of Q1 and 7.15 volts on
. You can
usually scrape up a bit of the corner with a fingernail - if you prefer to
use a tool, be careful not to scrape the hard plastic (glasslike) LCD front
surface.
73,
Don W3FPR
> -Original Message-
>
>
> I am building K2 04858 and have arrived at the display
> inst
que before
acquiring other habits, you will be further ahead than the point at which I
am stuck (and likely will never extract myself).
73,
Don W3FPR
> -Original Message-
>
> I have completed K2 # 4670 - thanks for the help.
>
> I can now listen to W1AW code and work on ge
Thom,
OK, I may be dense, but I opened the page you referenced and nothing hit me
in the face about 'unpleasant surprize' and '30 meters'. Can you be more
specific - I just don't have the time to look through all the links on that
page to find what you seem to be
Jack,
Yes...
Take a look at the 'Switchbox for digital modes' article on my website
www.qsl.net/w3fpr for some ideas that may be applicable to your situation.
You should be able to expand on that to suit your individual needs.
73,
Don W3FPR
> -Original Message-
Andrew,
The K2 firmware attempts to maintain the pitch of a tuned signal, but is
limited to an accuracy of about 10 Hz due to the resolution of the D-A
conversions in the K2.
73,
Don W3FPR
> -Original Message-
>
> When I use the K2's XFIL button to change the filter
Eric,
The best explaination I know of can be found on the Elecraft website in the
Builder Resources section - 'A Detailed Example of the mechanics behind CAL
FIL' - or for a direct link
http://www.elecraft.com/Apps/new_fil_docs/CAL_FIL_mechanics.htm.
73,
Don W3FPR
> -Ori
-
with the dial indication at the low end of the 12 meter band, the VCO should
be producing a signal at 19975 kHz (read the frequency in CAL FCTR mode with
the counter probe in TP1). If the frequency is incorrect, the problem will
be found in the VCO area and not the BPF.
73,
Don W3FPR
bably just ignore that spike too.
73,
Don W3FPR
> -Original Message-
>
> I used Spectrogram to set up my K2's filters. When lining up the
> frequency peak with the marker for my preferred sidetone (650 Hz in my
> case), the typical display shows the usual bandwidth s
Lee,
The crystals are the same - either will work, but don't use both - save the
other for a spare. Other than that, there is no relationship between the 2
mods.
73,
Don W3FPR
> -Original Message-
>
> K2 Temperature-Compensated PLL Referencec Upgrade
> and
> BFO
Brent,
I have information about the Yaesu FT-900 knob on my website
www.qsl.net/w3fpr, but the phone number is wrong again - I just can't keep
up with Yaesu parts - look them up with a Google search - as of 2 weeks ago,
Yaesu parts were handled by Vertex Standard, 10900 Walker Street, Cypres
Folks,
It did not take long to deplete my stock of knobs and tires.
You can still get them from Yaesu (see below)
> -Original Message-
>
> I have information about the Yaesu FT-900 knob on my website
> www.qsl.net/w3fpr, but the phone number is wrong again - I just
>
impedance is the value I usually use for an effective chokeing action.
73,
Don W3FPR
> -Original Message-
>
>
> I made a simple 1:1 receive-only balun for 160 meters by winding
> 9 bifilar turns
> of no. 24 enameled wire on an FT37-77 toroid. I connected a
> 50-ohm res
> -Original Message-
>
> In the K2, the tuning indicator is usually installed such that it will
> blink the 10th LED of the S-meter LED to indicate when you're
> tuned to the
> other guy's signal. Don Wilhelm, W3FPR, tells me he prefers to use a
> separa
facturer's data sheet says they are good up to 30 ma., so
greater brightness could easily be achieved with a lower value resistor -
chose your resistor and take your pick.
73,
Don W3FPR
-Original Message-
>
> In the K2, the tuning indicator is usually installed such that it will
&g
may want to
experiment by changing the turns ratio of T7 a bit to see if it improves.
73,
Don W3FPR
> -Original Message-
>
>
> Vic and Stewart, Tanks for answering
>
> well, the ripple on the CW filter at 2kHz BW is abt 8db p-p.
>
> the gain difference when th
toggle the AGC
off/on by pressing AGC and PRE/ATT buttons together. Adjust the AGC
Threshold just below the point where no change in noise is observed. Be
certain the set CAL S Lo and CAL S Hi after changing the AGC Threshold
setting.
73,
Don W3FPR
> -Original Message-
>
> I
#x27;final' adjustments - better to wait
until you have the K2 completed and then repeat the settings for AGC
Threshold, CAL S Lo and CAL S Hi.
73,
Don W3FPR
> -Original Message-
>
> May be I'm to critical but lets try once more. After finishing the AGC
> Threshold sett
-beat' WWFV very closely) to properly set the K2 dial calibration is on
my website www.qsl.net/w3fpr. 600 Hz is WAY off - 20 0r 30 Hz might be
expected after doing the calibration.
A note on observations in CW mode - be certain of how the receiver used to
observe the K2 transmitted frequency hand
Rich,
My 8 year old grandson grasped the resistor/capacitor color code in about 15
minutes of sorting resistors. Buy one of those resistor 'grab-bags' and
sort them - when you are finished, you should have a good recall of the
color code.
73,
Don W3FPR
> -Original Message
Merlin,
Yes, I would suspect a faulty solder connection before anything else. Since
it is confined to 40 meters and happens with a dummy load, I would look in
the 40 meter low pass filter area first - especially for poorly tinned
toroid leads.
73,
Don W3FPR
> -Original Message-
>
plastic film.
73,
Don W3FPR
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Behalf Of randt
> Sent: Saturday, April 09, 2005 11:15 PM
> To: Elecraft@mailman.qth.net
> Subject: [Elecraft] K2 LCD (Protective Film On Backside)
>
>
> #48
ne with no problem.
After tuning the antenna, you can drop the power back if you wish to run
QRPp.
OTOH, since you indicate that the same thing happens with a dummy load
(hopefully with no tuner involved), you should still look at the KPA100 low
pass filter - and possibly the LPF in the base K2.
73,
Bob,
First check your power supply and the cable connections between the Power
Supply and your K2. The conditions you report are classic for a low voltage
at the K2 power connector and/or a high resistance (loose connection) in the
power supply path.
73,
Don W3FPR
> -Original Mess
atures or has it adjusted improperly.
Unfortunately, there was no data presented without the transverter, so it is
difficult to judge whether or not the K2 used was properly adjusted. ARRL
test lab results indicate the base K2 has a very good receiver.
73,
Don W3FPR
> -Original Message-
>
see them - the problem is that the colors are not as clear and
distinct as they used to be.
73,
Don W3FPR
> -Original Message-
>
> Maybe I missed it, but I didn't see anyone mention that the K2 resistors
> are packed in the correct order from the "factory".
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