If you look for a "no solder" solution, you might find XLR-to-kenwood
cables. They seem to be expensive, like
https://www.ebay.com/itm/111802127327
However, it would be good to know if your mic needs extra supply voltage
("phantom") or not. If your mic is a cheap one, than it is probably no
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The latency is ok with BT aptX. You should look for the BT adapter
supporting it plus the headphones. Sometimes they just say "lower
latency" but this is not aptX. See here for more info:
https://www.aptx.com/aptx-low-latency
73 Gernot DF5RF
The resistance checks are meant to measure at U13 after being placed and
soldered. It is not a component check, but it will check if you have
done the placement and soldering of all the connected stuff correctly.
IAW, a different value could mean you did a mistake somewhere else.
Visually
You could first check if you get stable connection using the
PX3-utility. If that does not work, it could be an unstable power supply
issue (0,5A ~12V required).
Otherwise I suppose there is a loose connection inside of the P3. You
could check the cable from the main board to the display. The
Hi Alan,
ok, two parts now, quite big for some reason. But I guess good enough to
give it a try.
73 Gernot DF5RF
Am 23.12.2020 um 02:06 schrieb Alan - G4GNX:
Hi Gernot.
I'll hold off with the printing for now.
Still very interested to try out a fully working version.
Something I never
Hi Alan,
thanks for the feedback - the uploaded design is not the latest one and
probably won't work. I'll upload an upgrade soon.
73 Gernot DF5RF
Am 23.12.2020 um 00:35 schrieb Alan - G4GNX:
Hi Gernot.
I just downloaded it and will 3D print it as soon as I can.
Looks like a good design and a
Hello Elecrafters,
while we are all waiting for the arrvial of the next beauty, I started
to think what's to improve on my K3 meanwhile. I realized I have always
missed a means to adjust knob friction while tuning. So I sat down and
did the construction and printing (and some iterations of that)
Hi there,
just to let you know, my SHIFT-encoder stopped working a while ago. K3
is 12 years old now . Thanks to the great support of Elecraft it is
working again now. How? They just send me new parts at no charge,
arrived here after 2 weeks and I replaced the broken one. Wonderful!
73 Gernot
Hi everybody,
just to let you know:
while preparing my gear for WWDX I noticed that the P3 started to freeze
the display for about 1 second, than continues to work for 2-3 seconds,
then freezes, and so on. Very annoying to look at.
I disconnected all cables and traced it down to the
On mine its the other way around - there is no CMP on FM, but on
USB/LSB/AM. Makes sense to me.
FW2.9/DSP 1.52
73 Gernot DF5RF
Am 09.07.2020 um 15:43 schrieb K4MT:
I have been searching the manual but cant find my answer.
I can no activate the compressor on any mode but FM. All other modes
Andy,
mni tnx - good ideas! Will rewire my QRM box to the K3 RXIn out to avoid
the extra PTT-relay clicks imposed by the QRM-box. It is the Wimo-QRM
Eliminator. Not as Hi -end as the NCC-1 but a start.
Just looked-up the DXE - now the NCC-2 is out and it now also has the
same extra PTT
Good hint - tnx Frank.
Will try a mini whip or small loop.
73 Gernot DF5RF
Am 29.06.2020 um 19:47 schrieb donov...@starpower.net:
Hi Alan,
The MFJ works very well as a noise eliminator only if the noise antenna
is very close to the noise source, so that the noise is much stronger than
the
Hello all,
In a recent rush to eliminate urban noise I bought an QRM eliminator.
The working principle is to null out signals by shifting the phases of
two antennas (one main/tx and one rx). I can see the effect sometimes,
but it is not the holy grail for all types of QRM. I still don't get rid
Thanks for the idea, unfortunately the problem persists. This makes me a
bit more nervous than before as I have done quite a bit of upgrading
lately (144MHz, Reflock, TCXO) and I had a fault in the tuner (capacitor
blown), and now the refclock is off by 220Hz.
Did anybody else had the problem
Hello,
anybody encountered a problem restoring a previously saved
configuration? The error is "No response to write EEPROM block".
tnx 73 Gernot DF5RF
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Check the outside connections. Where did you connect the W2 to? Does
your W2 has the VHF-coupler connected? Is the dummy load ok for VHF?
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Jim,
you are right, too often we mean counterpoise and say ground.
Hopefully Peter can start doing his experiments based on our wisdom and
I'm curios what will work ok for him.
73 Gernot DF5RF
Am 09.06.2020 um 22:42 schrieb Jim Brown:
On 6/9/2020 1:21 PM, g...@gmx.net wrote:
anywhere then you
Hello Peter,
I think it depends on your willingnes to sacrify the shape of your boat.
If you want to get heard anywhere then you either need a long vertical
plus good ground as mentioned already, or a dipole as high above sea
level as possible. The dipole may be sloped but either the feedpoint
Joe,
Have you selected LINE-IN in the MIC-SEL config-menu?
73 Gernot DF5RF
Am 20.03.2020 um 13:40 schrieb Joe N9OK:
I've reached out to Elecraft Tech Support on this issue. With their locale
on lockdown, I think they have their hands full just trying to maintain
some sense of normalcy. So I'm
Mike,
the input circuit "the fuse" is a transformer (T1) and two resistors
(R13, R24). If overdriven, it just goes into saturation and clips the
signal, which leads to distortion. If you have, however, the capability
to put seriously more than 1Vpp into it (like 12V?) I don't know what
Been in the same situation, finally had luck and could buy a used P3 for
a reasonable price. Not fully loaded, but I can second it was worth the
investment. I played with different panadapters and SDR-software in the
past and have given up on this. The integration/configuration is not a
dream.
I admit using FT8 :-)
FT8_ON: MD2;MN053;UP;UP;MN255;PC050;
Selects USB, switches the MIC input to Line-in, reduces power
FT8_OFF:MD2;MN053;DN;DN;MN255;PC100;
Btw, Dave, how did you manage to send commands to the K3? Does the P3
relay those commands over?
73 Gernot DF5RF
Am 11.02.2020 um 22:42
Walter,
thanks for the pointer. Will give it a try. Not sure how to combine the
two, lets see.
73 Gernot
Am 04.02.2020 um 23:52 schrieb Walter Underwood:
You actually have 22 kHz of in-phase signal and 22 kHz of quadrature signal
on the stereo output. You can combine those to get 44 kHz of
Hello,
for a long time I just haven't looked into the details, but now I did
and I'am confused.
When I plug it into a soundcard it appears to show the current station
in the center of the display, to my understanding the center of the
display is the half of the sampling frequency of the sound
Just to add: My K3 draws 1.34A on 2m receive.
Am 15.01.2020 um 00:06 schrieb g...@gmx.net:
Clay,
If you get this message, your GND connection may not be ok. I too had
this problem when installing the transverter on my "old" K3. Remember
the +12V will be delivered by a single wire, the GND
Clay,
If you get this message, your GND connection may not be ok. I too had
this problem when installing the transverter on my "old" K3. Remember
the +12V will be delivered by a single wire, the GND comes from the side
plate of the K3 which *must* be sanded, which was not the case on mine.
Very true. I just tried to get every important missing option and the
upgrades.
I'm asking myself it it makes sense to replace the front panel, as it
seems to be impossible to repair or clean the soft knobs. Or am I
missing something?
Am 13.12.2019 um 18:28 schrieb Bob McGraw K4TAX:
Having
Jim and all,
My K144XV is now alive. So thanks for your great help, also thanks to
elecraft support who helped with a drawing. The old side plate also
missed the blank space, which I spotted on the scans of Jim.
Lucky me, the transverter was also equipped with the REFLOCK board, so I
guess
Ryan,
The traces I can see are signals of other stations. The KX3 (as any
other SDR) has a limited bandwidth to display, so it will shift the
display window while your are tunining out of your displayed frequency
window. So, if the traces you refere to depend on the tuning speed of
your VFO
My serial is 3376, second owner. It seems the first owner made some
interesting mods to it. For example, the backplate BNC-hole for the
2m-Antenna is filled with an external fuse for the KPA3. Does not seem
to be the standard...
Thanks for the info, Dick.
73 Gernot DF5RF
Am 12.12.2019 um 21:14
Hi Jim,
yes, perfect! That's a brilliant Idea!
Looking forward to your scan,
73 Gernot, DF5RF
Am 12.12.2019 um 20:58 schrieb Jim Rhodes:
I happen to have the side panel off of my K3 right now. Would it help
if I scanned it into a jpeg file and sent it to you?
On Thu, Dec 12, 2019 at 1:44 PM
Hi,
I just bought a used K144XV. My K3 side plate does not have the 3 holes
for the holding screws.
Does anybody has the layout of these holes available, so at least I
could drill them by myself? I guess have no other choices.
Thanks,
73 Gernot DF5RF
Make sure you have no equalizing in the audio output somewhere (that is
important for any transceiver, btw). Also check the SSBA and SSBC
options in the menu, maybe the selected compression ratio is not ideal
for FT8. See KSB2 manual regarding "PowerControl and ALC".
You could test this with
If anbody has a spare KTCXO for the K3 to sell, pse let me know.
Tnx, 73 Gernot, DF5RF
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I'm doing lots of QRP, but my joy of ham radio comes from the freedom of
choice.
As an example, on June 28th I worked ZL4TT on 20ms with QRP on my second
call, and five minutes later I heard ZL3IO, but I gave up QRPing after
some fruitless calls. I enjoyed both QSOs very much.
Just my 2
Hi Conrad,
Select Input->Sound Card
Options->RF-Frontend: SDR on IF
Input, IF = don't care, Global
Offset=depends on the SDR-RX. I use Softrock with a modified clock, so
mine is -1.6kHz.
73 Gernot, DF5RF
Am 21.07.2019 um 23:36 schrieb Conrad PA5Y:
I have a Perseus and I wonder if anybody is
My fav NR setting is F1-4.
In addition to Bobs excellent explanation about noise levels and
sensitivity, also consider adapting the AGC settings. Don's article
about AGC is very helpful: http://www.w3fpr.com/K3_AGC.htm
In some situations I even turn AGC off.
gd dx!
Gernot DF5RF
Bruce,
I built mine in 2001, and as far as I remember I had the same situation
with the options. Since you have the options, sneak-preview into them
and read what and how the parts have to be removed. Then you get an idea
how to install them in a way you can removed them without putting harm
James,
a widely used design is to wire the sources together via some resistors,
and get some gain by a following OP-amp. The resistors could be made as
pots to adjust volume.
I built one for my guitar amp, if you look into DIY guitar electronics
you'll find plenty of design ideas.
here is
John,
the issue with SO2V is that you want to stay on your run frequency, but
be able to slightly tune up and down to hear callers which are not
exactly on your TX freq. RIT comes in handy here, as you just press RIT
or CLR after the QSO is finished. I don't have a K-POD, but if it would
let
Scott,
I looked at the programmer ref manual and realized there is only one
RIT/XIT, which is controlling VFO A. I guess there are two choices left:
- either you press A/B to switch to your CQ VFO.
- or you try to mimick RIT of VFO B via FBxxx; commands with the help of
an external control
Don,
ok, thank you. That clarifies the issue. Would be nice to hear from the
Elecrafters if there are any firmware changes possible to improve the
IF-message timing.
If not: I already had the idea to implement a frequency counter which
measures the VFO's frequency, connects to the RS-232
Hi all,
at the WinTest-reflector people asked why the K3 does not appear
"smooth" in the band map as another vendor's TRX.
I made some tests and found out the following, see below.
Now my question: will the new USB-Interface change that timing behavior?
tnx, 73, Gernot DF5RF
I just
Dan,
Make sure you don't have installed U7 (the EEPROM) in the wrong way.
Check where pin 1 is located and that is the IC side with the notch.
Also check U8 for reversal, this could pull down the I2C lines to the
EEPROM. Do this check also for U4 and U5 on the RF board, they also
share the
FWIW, I did find I can use a virtual port
with it # "10" If I assign any other
numerical value it will not work. Won't
work with Win 7, I tried for hours but
with this computer & Win 10, WSJT-X works
on virtual port 10. All the other software
works on whatever virtual port I tell it
to work on.
Hi List,
my KX3 shows new behavior; dunno since when and what I could have touched.
here is what I do: Mode CW, SUB-RX on, send a dit or dah, go back to RX,
now there is a tone in the audio path like a "pling" which is decreasing
in volume within about 1.5-2 secs to zero. This seems to happen
Just for the records: The PIC-Chip was defective and is changed now,
thanks to the super fast help of elecraft support Gary and Vic!
73, Gernot DF5RF
Am 08.10.2017 um 01:13 schrieb g...@gmx.net:
Don,
ok will do that. Thanks for help!
73 Gernot DF5RF
Am 07.10.2017 um 02:16 schrieb Don
Don,
ok will do that. Thanks for help!
73 Gernot DF5RF
Am 07.10.2017 um 02:16 schrieb Don Wilhelm:
Gernot,
You either have a malfunctioning U1 or you have a bad relay at K1.
Since you were able to get K1 to operate and select 60 meters, I
suspect U1 is the problem. Request a replacement
Hello,
I recently decided to upgrade my K2 to 60m and ordered the K60XV.
After building and installing the module and all the mods, I could hear
signals on 60m, but very very weak. Using the XG3 showed a difference of
8 S-points compared to all other bands. I tried to isolate the problem.
I
Solved: PIC16C72A was defective.
I had the chance to get a second K2 for reference testing. The KSB2 of
that K2 works perfectly in my K2, but not vice versa. The error is
isolated to my KSB2, but now I'd need to seek for the culprit.
I noticed a strange behavior at U1.16, which drives the
Hello again,
Thanks to Volker, DL4ZBG, he replied directly with the following link:
http://www.qrpproject.de/Media/pdf/ZusammenfassungMods.pdf
It is a nice description of many improvements that can be made for the KSB2.
However, I believe that I do have a fault in the KSB2 (Rev. D) or K2,
Hello list,
I recently tried to use my K2 on SSB. To my suprise, there was very
little output. Even with full power it only showed the first bar. I did
some SSB QSOs during the first years...
Digging deeper, I found the DSB signal showed a Vpp of ~1V, but after
the filter the SSB signal was
Terry,
I was in exactly the same situation you described. I decided to look for
a used K3 with the SUB-RX included, as well as narrow filters (400Hz)
and ATU. I was lucky enough to find one within my budget limits.
The main advantages among the many features of the K3 -at least to me- are:
-
Hello list,
I bought a used PR6-10 and realized it does not provide any gain on 10m
but does so on 6m. I already checked the DIGOUT1 configration per band,
as well as the jumper setting (off) inside the PreAmp.
Anything else I should look for?
tnx es 73 Gernot DF5RF
Bill,
thanks for pointing out to option (1). After reading all the suggestions
I will very likely do the KSYN3A upgrades only.
Regarding the USB/Sound card - I had to insert ground insulation for all
the Audio/USB to PC connections to avoid ground loops.
Does anybod know if this one is already
Bill,
Good to know there is a DSP Update - didn't recognized it yet. Rev C is
installed so the only difference to Rev D is the 4 kHZ Audio LPF. Did
you encounter situations with a noticable enhancement using the LPF?
73 Gernot, DF5RF
Hello list,
I've purchased a used K3 S/N in the 3ks, and plan to apply some of the
K3S upgrade options.
Any experiences, hints or do's and don'ts to tell for me?
I'm using the K3 mainly for HF contesting, VHF with an external
transverter and some DX chasing.
tu es 73
Gernot, DF5RF
Jindra,
yes, just keep us posted when your done!
73
Gernot
PS: I guess you wanted to reply to the list.. you have to be careful
most email programs reply to the sender by default.
Hi Gernot,
That could be it... I am afraid I was expecting something like 40 chars
and did not bother reading
Jindra,
check the KYn; response for error / success. See manual re. the KY
command. Might be a buffer overrun ? The buffer is limited to 24 chars
according to the specs.
73
Gernot, DF5RF
Am 26.09.2015 um 20:18 schrieb Jindřich Vavruška:
Hello,
I am programming yet another utility to control
Hi Olli,
yep, this might be the case ... but I did not check during the contest
using other receivers than those mentioned - I was quite busy :-)
73, Gernot DF5RF
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Don,
thanks for the hints. The K2 is almost original with some simple mods
that had been published during the early days.
I pulled out my XG3 and tried to reproduce the problem. But I could not
hear a clean 2nd or 3rd signal, but a lot of hard noise nearby.
I guess the XG3 is just not clean
Hello everybody,
during the WPX contest I noticed some weird sounds in the K2 when tuning
to strong (S9+20db) stations.
The sound was distorted, kind of ripple, but it did not sound like
typical ringing.
I also noticed LZ9W booming in on 80m with S9+40db, producing 3 images
in the K2 and the
Today, I completed my 1st RTTY QSO using the KX3! One call to EA8MT, done.
However, I have the same problem Ron had (or still has?)
I wanted to use the CW paddles, but couldn't succeed. I used the KX3
Utility to make the QSO.
Any idea on what can be wrong with my paddle (works in CW, of
Since I couldn't find anything in the manual, I downloaded the latest
manual from the elecraft web site.
Voila - here we go: CW-to-data cannot be used in CW hand mode - which I
used in the setup with the microham keyer...
Problem solved!
Am 24.09.2014 22:53, schrieb g...@gmx.net:
Today, I
Mark Olli,
VFO NR reduced indeed the tuning noise. On a real antenna faintly
audible w/o PREAMP.
Great!
The RXSHFT has to be set to NOR according to the manual, which I did.
Thanks for the hints.
73
Gernot, DF5RF
Am 21.09.2014 03:01, schrieb Mark Forsyth:
Did you turn VFO NR ? It's a per
Hi folks,
received my 2M module this week. Assembly went fine, everything as
described in the instructions.
TX works great, I can drive my PA with 1.5W.
RX is also quite sensitive. Worked 2 stations via TR 400km, both were
running less power than I did.
But: The tuning noise problem which I
Matt,
I have asked the same question to Eric at the HamRadio fair in
Friedrichshafen. From what I understood, you don't need the mod because
you can either operate on VHF or on HF. The mod makes sense if you have
another VHF radio which you like to operate in parallel to the KX3.
73, Gernot
Talked to Eric at the HamRadio show in Friedrichshafen - he said about
September.
Elecraft also presented the new PX3 - really cool!
73
Gernot, DF5RF
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Indeed, 2 Cells were completely dead, but after increasing the supplied
voltage to 14V the charging started. Hopefully all cells are still alive!
Alan, where did you get that valuable information re 14.5V from? I
couldn't find anything in the manual.
Thanks for all the suggestions!
73
Gernot
I get an bat Err message if I want to charge my battery pack on the KX3.
The battery (NiMh) seems to be very low, as the KX3 doesn't start with
them. The LEDs light up shortly then nothing.
But if powered externally, I'd expect I get my battery recharged.
What can I do?
Tnx,
Gernot, DF5RF
Marco,
I had the idea of using some CAT-command to do so, but couldn't find a
specific one in the manual.
There is, of course RX; and PCxx;, which would have to be sent
frequently. The VOX state command is commented as GET only, SET is
planned.
In Win-Test, for example, you could assign a
Hello,
I'm so glad Elecraft found the real cause of the tuning noise. Removed
the pins today. In comparison to the measurements I took last year,
absolutely nothing to hear with antenna connected. Same setup as
described below.
If I disconnect the antenna, the only band presenting very weak
Arno,
I both own the K2 and the KX3. maybe you saw my recent post about using
them in the WPX CW contest.
The great thing about the KX3 is that Elecraft is constantly working on
software improvements.
You can disable FM and AM - just checked SSB cannot be disabled at the
time but my be thats a
Hello everybody,
I used the KX3 with FW 1.47/DSP 1.19 during WPX CW quite a lot. About
500 Qs on the KX3, 400Qs using the K2.
The KX3 features which outperform the K2 (and many other radios likewise
:-) are IMHO
- no noise clicks when changing filter bandwidth is a great plus to
avoid missing
Sorry for the typo - I meant DSP Version 1.18
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Bob,
thanks for pointing out to the diagnostic commands. Played a bit and I
get the impression there is nothing wrong, basically.
My ATU does this click whenever SWR becomes bad and switches between
AK105001 and AK145801. Not a bug, but a feature as it seems, to keep
SWR low.
The K2 ATU does
During ARRL-DX - running 5 watts - I noticed a faint click in the KX3,
occassionally. I tried to reproduce but couldn't. Later I noticed the
ATU-sign was blinking briefly after the click.
I checked SWR, but KX3 says 1:1, and a quick ATU- tune confirms the 1:1.
I'm a alarmed now - I don't
I can only second that. The announced built-in 2m module is a must for
me to complete the KX3 as a portable and mobile radio.
Anybody else? Maybe Eric and Wayne would reconsider the 100W priorities :-)
73 es HNY!
Gernot,
DF5RF
Am 28.12.2012 15:56, schrieb Robert Vargas (KP4Y):
Does anyone
Rick,
with PREAMP off and AGC-Fast the noise is measured as follows (peak
values), depending on band (quiet ) and antenna:
on 10m, on a vertical: 1.1 dbV, on the beam: 1.8 dbV
on 12m, on a vertical: 3 dbV, on the beam: 2 dbV
on 12m, on a vertical: 2 dbV, on the beam: 1 dbV
To get an idea how
Hi Mark,
I've recognized this noise after running the KX3 for 2 month or so, made
more than 400 QSOs before I noticed it.
Now that I know it is there I'll always hear it ! I asked Elecraft
support and they confirmed it exists.
I measured the noise on 10mtrs using the built-in audio dbV feature
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