by 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 in my
,
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 hard
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
-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
not 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
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
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
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
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
, but 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
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
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 time I've
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
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 J66 block
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
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
of 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
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 several
for 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 is
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 and 15m
ALC starts 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 adjusting
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
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
.
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 KX3 2
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
), but 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
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, Pete Smith N4ZR wrote:
Sorry, Adrian - I
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. Hope
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
, 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 12 VDC
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 noise
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't
,
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
will 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 A
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 recall
l 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 wrote:
F
if 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 just
, your
abnormal settings could be due to conditions present at your QTH.
73,
Don W3FPR
- Original Message -
I needed to open up my K2 serial no. 4168 to tinker with the AGC threshold
setting so took the time to measure what the VCO voltages at R30 were on
160m.
The results
, the 'cure' will be found in the power supply.
73,
Don W3FPR
- Original Message -
From: Dan Barker [EMAIL PROTECTED]
That is very odd indeed.
You should measure at the other end of the wires, to see what the radio is
seeing, but I'm afraid that would make it even worse.
Can you
Tom,
I can't speak for the latest version of Spectrogram, but you can use version
5 (the last free version) for the K2 filter alignment and not have to fool
with all the bells and whistles of the latest stuff. See my website article
on K2 Dial Calibration (Step 3) www.qsl.net/w3fpr
at the same thing - I will leave the proof to the
'student'). An RF probe can also be used to measure the RF voltage, and in
that case the probe shows RMS voltage and the power is calculated as V**2/R.
73,
Don W3FPR
- Original Message -
I wonder if my K2 (Serial # 2424 with latest mods
Tom,
If you have version 2.xx firmware, the 10 meter power limit setting will be
found in the secondary menu. Check the version 2.xx firmware documentation
for details.
73,
Don W3FPR
- Original Message -
I wasn't aware of a menu entry limiting power. I have seen and used Hi
Cur
Ken,
OK, I just checked the docs - you are correct. I do move it up when
checking for max power out because I also do a check on the SSB peaks - I
have done this so often when setting up K2s that it is simply routine for
me. It is not necessary for CW!!
73,
Don W3FPR
- Original
is highly recommended.
If you want more detailed information on aligning the K2 filters, look at my
website www.qsl.net/w3fpr article on K2 Dial Calibration - Step 3 details
the CAL PLL part.
As an added note, I have not yet changed the links to Tom Hammond's new
website, so you will have
, the final output variation is
about 150 watts!!!
I really can't see this as a problem in actual operating practice (there is
little difference in transmitted signal between 1350 watts and 1500 watts),
but it can make meters 'dance' which may be quite disconcerting.
73,
Don W3FPR
- Original
OK Folks,
I found the info that Tom was referring to - it is in a reflector posting
from Wayne Burdick dated 8/5/1999. I have appended the text to the bottom
of this reply.
73,
Don W3FPR
- Original Message -
It IS in the software ALC... reflects the ALC's attempting (at about
turns = 15 uH) - the wire size is not critical, use the
leftovers from your K2 build.
73,
Don W3FPR
- Original Message -
OK, this may be a silly question but... Why do I need
a KIO to run the KPA100 remotely? In my case, I just
want to have the PA in a seperate enclosure to keep
device to practice 'head-copy'.
I built one and I like it!!!
73,
Don W3FPR
- Original Message -
Hi all,
I've mumbled on about this on a couple of occasions on several lists.
I'm trying to bring my Morse up to an acceptable standard.
I've tried a number of approaches but so far
.
Should you desire a bit of information on the transformation properties of
antenna feedlines without delving into the math, take a look at my website
(www.qsl.net/w3fpr) article on 'Antennas, Transmission Lines and Tuners'.
73,
Don W3FPR
- Original Message -
I'm still learning
the audio range that you wish to
demodulate. If you need detail information on aligning the filters, look at
my webpage (www.qsl.net/w3fpr) article dealing with K2 dial calibration -
Step 3 is the CAL PLL section.
I am confused with your mention of CW reverse in the context of RTTY mode -
CW
www.qsl.net/w3fpr article on K2 Dial
Calibration for the long story - or skip right to that article's Step 3 -
CAL FIL for details on how to properly align the BFOs to give you the proper
demodulated audio range.
73,
Don W3FPR
- Original Message -
I'm still trying to figure out why
the heat sink screws and nuts, I use
the split lockwashers instead because they are not as likely to leave those
bits of aluminum behind when they are removed.
73,
Don W3FPR
- Original Message -
My K2 has been working fine but I decided to fix it anyway...hi.
Well actually I
section of the Builder's Resource
area -- THAT IS the N6KR method that you need. Wayne's original posting
content is on my website too www.qsl.net/w3fpr.
I guess Eric missed deleting the old procedure when the new one was posted.
Forgive him, he has a lot of stuff going on.
73,
Don W3FPR
an older K2 with the 11:3 turns ratio, you might want to give it
a try and let the rest of us know the results.
73,
Don W3FPR
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr
my webpage
www.qsl.net/w3fpr for some examples of my workmanship and skills with
Elecraft gear.
Price list on request (off-reflector please).
73,
Don W3FPR
Life is what happens when you are making other plans
___
Elecraft mailing list
Post
to 10 open collector devices in parallel without a
problem - the actual number will depend on the driving transistor in each
device and just how much leakage current they have (collectively).
73,
Don W3FPR
- Original Message -
From: Lou Roux [EMAIL PROTECTED]
To: Bob Tellefsen
.
73,
Don W3FPR
- Original Message -
Has anyone come up with a good holder for the 808, or seen such a beast?
There must be a better way to hold the tool when not actively in use.
Suggestions?
-Jack Brindle, WA4FIB
___
Elecraft mailing
.
If you haven't done so already, look at the K2 Dial Calibration article on
my website www.qsl.net/w3fpr. The CAL FIL part is covered in depth as 'Step
3'.
The links provided can provide you with a lot of additional information
should you need or want it.
73,
Don W3FPR
- Original
not have
concerns about the tip overheating. Protecting the pipe from contact is my
primary concern.
73,
Don W3FPR
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub
- the adjustable inductors are shared between these
2 bands.
73,
Don W3FPR
- Original Message -
From: Michael J. Linden [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Monday, October 25, 2004 11:25 PM
Subject: [Elecraft] K2: Low 10M Output
I've just completed the alignment procedure for my
the voltage at pin 3 of U6 to ground when Q10
conducts (only during high power transmit) causing VRFDET to be quite low
and the K2 then thinks there is no power out, so it increases power as much
as the circuits will allow.
I certainly cannot explain why this might be band dependent.
73,
Don W3FPR
I had one message rejected by my ISP - just seeing if this gets through
Pardon the bandwidth.
73,
Don W3FPR
Life is what happens when you are making other plans
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber
. If it comes to that, first step is to tell me what test
equipment you have available.
73,
Don W3FPR
- Original Message -
Just finished Part 2 of the basic K2 and having problems with the VCO
Alignment. I set the K2 to 4 mhz and connected a DVM to the left side of
R30 and I read 8.0 v
David,
This is the Weird At One Frequency (WAOF) problem.
Check out Builder's Alert #11 on the Elecraft website and while you are
there, download the instructions for the A to B upgrade which contains
additional steps for dealing with this problem.
73,
Don W3FPR
- Original Message
. In fact,
with a 'scope that sensitive, you could use a signal source of only
one-tenth the 140 mVrms value stated and achieve similar results.
73,
Don W3FPR
- Original Message -
Any suggestions or recommendations for a Sig Generator used for applications
such as tracing
Glenn,
As a quick check on your wiring for the LED indicator, short pin 5 of the
output connector to ground (pin 4) and you should see the LED turn on. A
short at this point will not damage the IC - because it is an open collector
output.
73,
Don W3FPR
- Original Message -
From
www.qsl.net/w3fpr article on K2 Dial Calibration - the CAL PLL procedures
are detailed in Step 3 of that article. Links are provided for additional
information if you need it.
73,
Don W3FPR
- Original Message -
I must be doing something wrong. Have my BFO settings exactly as
specified
, it should be easier to reduce both the receive audio and
sidetone when split is active (break the signal to one channel of the
headphone output).
73,
Don W3FPR
- Original Message -
When operating non-split you would hear the sidetone in both ears. When
in
split mode the sidetone would
, and then refine them
as you wish for whatever audio range you wish to de-modulate (use
Spectrogram and a wideband noise generator).
Additional benefit of the RTTY mode - the setting of the mic gain and
compression (SSBA snd SSBC) are independent of that used for SSB.
73,
Don W3FPR
- Original
) and
then on to the bandpass filters. The output of the BPF then feeds the
Driver and Power Amplifier (sheet 4 of the schematic) and finally goes to
the T/R switch and Low Pass Filters.
I do hope that helps you find the problem.
73,
Don W3FPR
- Original Message -
Unfortunately no reply's on my posting
article on my webpage
www.qsl.net/w3fpr.
73,
Don W3FPR
- Original Message -
I just completed my 2nd K2..I sold the first one (#242) a couple
of years ago. The new K2 (#4502) was completed this morning.
This K2 was built with the KAT2, KIO2, KSB2, K160RX, and KBT2
options.
I seem
.
73,
Don W3FPR
- Original Message -
I've probabaly seen this discussed before, but can't remember ...
I have noticed that the power output on my K2 differs from measures PEP
going to the antenna. Mostly it displays between 14.8and 15.2.
However, when measuring with a wattmeter
- without the KAT2 or KPA100.
You may be able to improve the accuracy by carefully trimming R67 and R68 on
the RF Board. Also you may want to try different 1N5711 diodes at D9 -
there can be some variation from diode to diode.
73,
Don W3FPR
- Original Message -
I have a question concerning
exists or not.
73,
Don W3FPR
- Original Message -
I have just completed the Control board on #3375 and have a question about
the resistance checks. Specifically the check on U4, OUT
The manual says to look for 3-7 k at this pin ... and I measure 2.48 k
with
my DMM. Is this value
on
those bands. The frequencies should be close to those listed in the VCO
Table of the K2 Schematic Key (appendix B of the manual). Also, build the
RF Probe and check the VCO voltage as indicated in page 10 of the
Troubleshooting section (Appendix E).
73,
Don W3FPR
- Original Message
where the problem lies).
73,
Don W3FPR
- Original Message -
From: Marc Glade [EMAIL PROTECTED]
To: W3FPR - Don Wilhelm [EMAIL PROTECTED]
Cc: elecraft@mailman.qth.net
Sent: Thursday, November 11, 2004 2:59 AM
Subject: Re: [Elecraft] K2: No recieve/power out on 20M thru 10M
Well, after
silent
minutes).
There is more information on my WWV zero-beating technique and using the
N6KR method to set the reference on my webpage www.qsl.net/w3fpr - look for
the article on K2 dila calibration.
73,
Don W3FPR
- Original Message -
Just finished the basic K2 and all seems ok
Alas, the K9 is already here - take a look at the K1EL keyers!!!
73,
Don W3FPR
- Original Message -
Then I guess there will be a while until K9 comes out :-)
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must
.
73,
Don W3FPR
- Original Message -
I've just gotten my MH2 working again with a RadioShack 270-090 element. I
have no idea if that's the right part, but it appeared identical to the
Heil
part, and the o'scope says about 120 mV p-p when I talk normally (Measured
at pin 5 of the SSB
Nigel and all,
I hope I have not caused any confusion, BUT ...
I have been refering to the classical filter 'corner frequency' as the -3 dB
point, which does place the upper 'physical corner' seen on the display at
400 to 500 Hz. Perhaps I should change my text to clarify.
73,
Don W3FPR
to the
addition of the K60XV, so perhaps your 160 meter low power problem was
present before the K60XV addition.
73,
Don W3FPR
- Original Message -
Now I could get onto the alignment. I tuned everything but I cannot get
the 160m board within the 1v to 7.5v range and the 60m range is very
low
.
Yes, the advertizing folks sometimes take advantage of differences like this
to make their product look better - called 'specsmanship' in some
engineering circles. You have to read the really fine print.
73,
Don W3FPR
- Original Message -
Not sure where the -3dB comes from, maybe
Dan,
Don't throw that resistor away yet!!! Yes, I agree that Acrobat Reader is
useful for stuff like that, BUT ...
Check the 3rd step on page 15 of your Rev F manual - you will see that R22
82k is placed into the holes marked 'D3'.
73,
Don W3FPR
- Original Message -
No r22
Glad you found it Ian.
That again substantiates the advuse to builders who encounter a problem -
check soldering, and then re-check soldering. Then when you have finished,
check the soldering!!! Remember, the circuits do work as designed and
component failure is rare.
73,
Don W3FPR
with spark plugs threaded into
a heavy grounded copper bar, but at $19.95 doing the metalwork involved may
not be worthwhile unless you have a home shop.
73,
Don W3FPR
- Original Message -
In a painfully slow, round-about way, I'm getting a Cebik 44' doublet put
up. I'm curious
if
you are looking for an inexpensive 2 meter beam.
73,
Don W3FPR
- Original Message -
I also don't know anything about the Cerbik doublet
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post
are on
the Elecraft website and can also be found in the K2 dial calibration
article on my website www.qsl.net/w3fpr.
73,
Don W3FPR
- Original Message -
From: Jason Marten [EMAIL PROTECTED]
I've come to the Alignment and Test, Part II. I think I'm having a
problem under the BFO test
. Get
some extra tips while you are at it so you have a variety for different
puropses - the tips last a long time with proper care, I just replaced my
first tip today after building about 25 or 30 Elecraft kits (I've really
lost count).
73,
Don W3FPR
- Original Message -
Can anyone
at the receiver.
For my $0.02 worth, I would not predict any improvement.
73,
Don W3FPR
- Original Message -
Hi all,
I noticed that the KIO2 option uses a standard conversion chip like the
Maxim 232, but does not use optoisolators. I guess the optoislators would
not help when the KIO2
.
Also check all other components in the PLL reference oscillator area for
proper values and proper soldering. Look at the schematic to identify the
components (RF Board sheet 1 of 4, upper left corner).
73,
Don W3FPR
- Original Message -
just completed my K2 to the Alinment
Brian,
I am not certain, but I will venture a guess that C83 will handle more
current when mounted with its leads bent over and soldered to the pads. The
other thing I can think of is that the leads present a smaller inductance
when mounted that way.
73,
Don W3FPR
- Original Message
if it is not
required. It can just lay on top the heatsink, moving air upward. If it is
a DC fan, you can put a resistor in series with one power lead and slow it
down considerably for less noise.
73,
Don W3FPR
- Original Message -
From: James T. Jim Rogers [EMAIL PROTECTED]
To: Elecraft
the Low PAss Filters and the antenna jack, but the unsoldered
connection could be most anywhere.
73,
Don W3FPR
- Original Message -
I just finished K2 #4498. it was running all test in good condx and Rx and
Tx where in the specs.
I let it in stand by this morning on 7 Mhz and sudenly I
station anyway, the NG-1 wideband noise
generator is a useful tool for setting up the filter alignment on the K2
(but alternatives are available), and you may find the balun useful if you
will be feeding antennas with parallel transmission line.
73,
Don W3FPR
- Original Message -
I am
to that point.
In addition, Elecraft kits with their quality PC boards containing
thru-plated holes are much easier to solder than many others without
thru-plated holes.
73,
Don W3FPR
- Original Message -
...
Will I ever build a Elecraft kit I got to be honest I still have
to
hone my
than another signal. The real 'proof of the pudding' is the 'R' in the
RS(T) report which indicates how well you can read the other station - and a
properly aligned K2 can dig them out of the mud, and !!!that!!! is what
really counts.
73,
Don W3FPR
- Original Message -
Howard
- but
do make gentle bends (radius of a large coffee can) if you cannot run it
straight.
The characteristics of a quarter wave wire apply - high voltage RF on one
end and zero volts on the other. The zero volts end is a good RF ground
point - connect it directly to your KAT100.
73,
Don W3FPR
1 - 100 of 652 matches
Mail list logo
