Don Wilhelm wrote:
Giulio,
Can you please describe the distortion? Also, please say whether the
distortion is heard in the sidetone or on a different monitoring
receiver.
Does all this happen when operating into a dummy load? Or is it only
when operating into an antenna?
Is this
I raised the issue some time ago of my K3 front panel temperature being much
higher after installing the KRX3.
At that time Wayne or Eric indicated they would look into a new function of
controlling the fan by the front panel temperature as well as by the PA
temperature. Any progress or
I was going to suggest an LC filter for non-critical work. If Elecraft would
supply replacement carrier boards with the pin sockets either mounted or
available it would be nice.
Inrad has supplied these blank boards at a reasonable price ($10?) in the past
for various radios.
Barry N1EU
I have observed the same with my K3. Although I have never calibrated my FP
temperature sensor, it was usually hovering around 25 Celsius before installing
KRX3. With the subreceiver installed, the FP sensor is now pushing 45C and I
can feel top of the radio's front panel being quite warm to
Last time I looked at one of the filter boards there seemed to be a substantial
quantity of componentsnot a simple carrier as
in the Inrad boards or those for the Kenwood plug-in filters.
The components' function, I think, is to tell the radio that the appropriate
filter is installed for
Giulio,
Do you have anything with a transformer near the K2? Move the K2 at
least a meter away from anything with a transformer and try it again.
If moving it cures the problem, you may either move the device(s) with
transformers or install the VCO Shield Kit in your K2.
73,
Don W3FPR
Hoping for a 8 MHz LC filter with a BW of 13 KHz and good mirror rejection is
like hoping to run a car with a few AA batteries.
A similar idea: the inside of the radio can be hardened by applying 117V to
random circuits for a second!
I hope I am not stepping on any toes - but I found someone
Can we please get back to putting K3, K2, K1 back in the subject lines
of the emails being sent?
If you own a K3 and you want to post about your K3, no matter what's
gone wrong, the first thing in the subject line should be what? That's
right, K3! Same applies for the K2 and K1.
Thank you.
--
When I looked at the feasibility of an LC bandpass IF filter for AM
reception a few months ago, I concluded that it was not feasible with
practical components.
The K3's 2nd IF is 15 KHz, so in order to be effective at removing the
image response, the 8215 KHz centered bandpass filter must be,
Is that hardening voltage AC or DC? :-) (I just *had* to ask -
ROTFL). Afterward I would expect the radio to be very hard (of
hearing). - Don't try this with your K3!
73,
Don W3FPR
Ignacy wrote:
Hoping for a 8 MHz LC filter with a BW of 13 KHz and good mirror rejection is
like hoping to
Jack,
About the only way I can foresee to use LC filtering for a 13 to 15 kHz
bandwidth would be to take the filter input and downconvert it to
something like 455 kHz, run it through an LC filter and upconvert to the
K3 IF. Seems like for the size, effort and potential for problems makes
the
I'm thinking of upgrading my K3 by adding a KRX3 sub receiver. One of the
things I want to try in the near future is diversity reception. Now, I think
I need a matched pair of filters to operate in diversity mode? Or does this
just pertain to the 5 pole filters? Or, if I already have an 8
These are good questions and what kind of problems occur when these filters
are not matched?
Steve Ellington
n...@carolina.rr.com
- Original Message -
From: jeff kb2m k...@comcast.net
To: Elecraft@mailman.qth.net
Sent: Friday, March 27, 2009 9:41 AM
Subject: [Elecraft] K3 sub rx matched
For those who don't mind having the same signal appear at 2 frequencies
30 kHz apart, an 8 MHz LC filter might be a solution - just don't
complain about strange happenings while using it.
The problem is much worse than that.
Why?
The K3 is a transceiver.
So even if *you* are willing to
I think mine is up around 35 to 40 C and no KRX3 yet - I did calibrate
it and the KAT3 temp too.
--
Power is no substitute for Skill.
On 27 Mar 2009, at 11:22, Nick Lekic wrote:
I have observed the same with my K3. Although I have never
calibrated my FP temperature sensor, it was
Jeff,
The filter offsets should be set the same for diversity reception, and
for that to happen most easily, the filters can be matched. You may
notice a wush, wush sound if the offsets are different.
But being practical, the *difference* between the actual offsets of the
filters will be
Er, no, or we wouldn't have to configure the filters by mode manually
(or use the K3 utility). A glance at the filter schematic for the
KFL3A reveals only filter components.
Bob NW8L
On Fri, Mar 27, 2009 at 6:08 AM, n...@speakeasy.net wrote:
Last time I looked at one of the filter boards there
Don:
Yes, that would work although if one is going to that degree of effort,
you might also fit a Collins mechanical filter as an option instead of
455 KHz LC filters.
It would also require some careful work with the mixers to avoid
degrading the K3's IP3 with two extra mixers, and also
For those who wish to listen AM/SW broadcast, researching the
Reflector is required to find out that the FM filter is the way to go.
I suggest an addition to the 13 kHz filter product description, and
other discussions of filter choice, to say that it is also recommended
for full-bandwidth
About this wush, wush soundDoes this wushing occur as you tune across
stations when in diversity mode or does it just set there and constantly
wush wush? Can't you adjust the compensation for these filters in the menu?
I don't understand why this happens. I had an IC-7800 and played with
~
N2CQ QRP CONTEST CALENDAR
March 28 - April 27, 2009
~
CQ World-Wide WPX Contest (SSB) ... QRP Category
Mar 28, z to Mar 29, 2359z
Rules: http://www.cqwpx.com/index.htm
Terry said:
...Some day, rig manufacturers will just put Ethernet in the rigs and we
will have native control!
I have been thinking about this for a while. What an opportunity for
Elecraft to upgrade the K3 when they release a stand-alone (no PC attached)
band scope. Wouldn't it be great if that
Hi All,
I recently purchased a brand new K3 and after a factory tuneup, it is a very
nice radio.
I discovered a situation using it that I would like to mitigate.
When trying to work a station simplex in a pileup I experienced receiver
blocking. While trying to listen to the DX station
For the past several days I have been seeing a couple of powerful digital
signals, S9+, between 14.018 to 14.032MHz. They seem to be comprised of 4
or 5 discrete frequencies rapidly moving around in a bandwidth of about
2Khz. When working with a narrow filter it is possible to work through
them,
It's peaking at 10 over here at a heading of 130 degrees from SE Michigan.
Dave, K8AA
- Original Message -
From: Kenneth Moorman n...@cox.net
To: Elecraft@mailman.qth.net
Sent: Friday, March 27, 2009 11:44 AM
Subject: [Elecraft] OT: Digital Signals on 20M
For the past several days I
Don Wilhelm wrote:
Supposedly, the 8 pole filters do not have to be matched (they do not
have offset numbers associated with them), but in practice, they may
have a small offset and some ''tweaking of the offset values may be
required to eliminate the wush, wush sound when using diversity.
I've heard, in the last couple of days, that the ARRL Intruder Watch is
looking into this.
~Iain / N6ML
Dave Larson wrote:
It's peaking at 10 over here at a heading of 130 degrees from SE Michigan.
Dave, K8AA
- Original Message -
From: Kenneth Moorman n...@cox.net
To:
Don Wilhelm wrote:
Giulio,
Do you have anything with a transformer near the K2? Move the K2 at
least a meter away from anything with a transformer and try it again.
If moving it cures the problem, you may either move the device(s) with
transformers or install the VCO Shield Kit in your
I've heard these signals for years on 18080 kHz and up.
Perhaps 17M prop is so poor they moved to 20M.
There are at times now three distinct stations on 20M CW.
They are wider than my 2.7KHz filter. Spectrogram shows they are
composed of more than 8 tones, spaced about 200 Hz apart.
I seem to
I've been monitoring these signals for a few days now. They seem to
run for long periods without a break, although I have heard a few
times when they stopped for a few seconds.
I've always seen them in pairs spaced about 15kHz apart. I don't have
the bandwidth to be able to tell if the
I'm sure the Elecraft crew will respond to your post, but
here are my recommendations. Load the latest beta firmware
and try the settings below, in my order of preference. In
all cases, the most important setting is to keep the RF Gain
turned down as low as possible, allowing you to just
I hear them S9+ at 270 degrees from South Central PA.
Although I'm not sure how directional my beam (Force 12/C3) is.
Interesting.
Mike, N3XPD
It's peaking at 10 over here at a heading of 130 degrees from SE Michigan.
Dave, K8AA
- Original Message -
From: Kenneth Moorman
Giulio,
As far as the transmit path is concerned, TUNE is exactly the same as CW.
The activation path through the microprocessor is different.
You might try setting the keying input to HAND and using only the dot
side of the paddles to see if there is some problem with the keying
algorithms
Hi all,
I'd like to compile of list of microphones folks are using with the K3.
If you have a minute and would like to contribute to the project, please
reply to me with:
Mic model:
Element type: (electret, condenser, dynamic etc)
Bias used? Yes or no
K3 Mic Sel configuration: L or H
Thanks,
Fred
I would be first in line to buy one. That's for sure!
Don K7FJ
I have been thinking about this for a while. What an opportunity for
Elecraft to upgrade the K3 when they release a stand-alone (no PC
attached)
band scope. Wouldn't it be great if that add-on device provided both a USB
and
I find that with the equalization I can make any mike sound good with K3. A $15
computer headset or a $20 Best Buy hand mike need lots of equalization. Heil
HC4 sounds good as is.
One of the great features of K3 beside the equalizers is ability to use
computer microphones/headsets without
The response to my question about interest in KX1 cases
has been surprising. I've received only two, and one of the
two is using a digital camera bag.
I have a KX1 that is loaned by a owner who wants a case,
and I'm thinking of something utilizing a K1 case with a
protective internal pocket
On Fri, 27 Mar 2009 10:18:39 -0700 (PDT), Ignacy wrote:
I find that with the equalization I can make any mike sound good with
K3. A $15 computer headset or a $20 Best Buy hand mike need lots of
equalization. Heil HC4 sounds good as is.
Not ANY mic, but most mics. Professional condensers,
-Original Message-
From: Kenneth Moorman [mailto:n...@cox.net]
Sent: Friday, March 27, 2009 1:59 PM
To: 'N3XPD'
Subject: RE: [Elecraft] OT: Digital Signals on 20M
I don't have a beam, but it looks like it could possibly be coming from
eastern part of Ohio based on these two bits of
For the past several days I have been seeing a couple of powerful digital
signals, S9+, between 14.018 to 14.032MHz. They seem to be comprised of 4
or 5 discrete frequencies rapidly moving around in a bandwidth of about
2Khz. Can anyone let me know what this might be?
The latest IARU Region 1
New K3 Modular Kit received in September 2008 but un-built and still in
original Elecraft packing due to family and other commitments:
K3/100-100watt transceiver modular kit
KAT3 - K3 ATU modular kit
KBPF3-K3 General Coverage RX Module
KFL3A-K3 2.8 kHz 8 pole filter
KXVC-K3 Transceiver
Hello Dave!
When trying to work a station simplex in a pileup I experienced receiver
blocking. While trying to listen to the DX station others were calling so I
narrowed the passband down to 200hz. I was unable to copy the weaker station
very well because the louder stations were
My beam pattern may not be as good as usual because the tower is cranked
down (storm last night), but from my QTH in Arizona the beam heading right
now seems to be about 120 degrees, which might put the location in the West
Indies, Venezuela or Brazil.
73,
Erik K7TV
I don't have a beam, but
That is consistent with my beam heading of 120, assuming I am receiving
China long path.
73,
Erik K7TV
The latest IARU Region 1 Monitoring System report published yesterday
mentions it as a Chinese FSK8 ALE net.
73, Markus
__
Hi Gary,
Heck yeah, I'll post the info for everybody.
Fred
Fred Cady
fcady at ieee dot org
From: Gary Hvizdak [mailto:garyhviz...@cfl.rr.com]
Sent: Friday, March 27, 2009 11:06 AM
To: Cady, Fred
Cc: fc...@iee.org
Hi Wayne,
Another minor quirk to report regarding the cross band A/B switching. If
the B VFO is on another band, pressing the A-B button causes a minor
pause in the audio. No relays clicking but a definite pause in the
audio. No big deal at all, but when A and B are on the same band, this
Having finished my KX1 spring tune-up I took Don Wilhelm's suggestion of
trying the new PA rather than tweaking toroids for a minuscule amount of
power increase.
Here are the results as shown by the KX1 (DISP:BAT) at 12VDC (my battery for
backpacking) and 13.9VDC (in the shack for maximum
Thanks to all who replied, I will give some of the suggestions a try.
Best 73
Dave Anderson, K4SV
Tryon, NC
828 777-5088
www.K4SV.com
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Help:
I used my K3 with 3.03 Beta during the Russian DX Contest last weekend.
During the contest, I had
the opportunity to play around with the AGC settings in the beta
firmware 3.03, and what seemed
optimal to me is right in line with what Dave K6LL recommended.
First Choice: AGC Off, RF gain
The observations remind me of my battles with the Orion AGC.
Orion had AGC-F AGC-S and AGC-Prog
All three allowed you to set your own parameters and the AGC-Prog
(Programmable) gave you the option of a custom AGC setting for contests or
whatever.
K3 doesn't have that flexibility and
Having to engage the sidetone (steady tone) in order to adjust the level is
annoying.
Example: When using headphones, I have to crank up the sidetone to about 40.
If I unplug the headphones and hit the key, the sidetone almost blast me off
my chair. Wakes up the XYL too! Most rigs let you
Hi Steve,
FWIW
I'm a CW only guy and use phones and speaker about
equally.
I fiddled with the sidetone level a few times when I first put
my K3 (S/N 56) on the air, and haven't touched it since.
I -think- my hearing is normal, and the level is set at 30.
I just tried both ways of
K3 doesn't have that flexibility and has no Programmable AGC setting.
How
about a Programmable AGC setting and the ability to set up your own AGC-S
and AGC-F settings?
AGC settings are programmable through the menu on the K3.I have already
programmed my PF keys to allow for NOR/SOFT
Ken
Different headphones require different sidetone level. I use QSK 100%. Band
noise conditions dictate various ST levels too. I'm always messing with it.
I like it loud so it overrides the background noise. When the XYL is asleep,
I turn it down. I can't imagine leaving it set at 30 all the
For CW mode: The mon level is the default. It simply controls the sidetone
volume and can be adjusted while sending (no steady tone).
Good idea. I've also become accustomed to CW side-tone that tracks with the
AF volume control. In doing so, the MON control still sets the side-tone to
Rx
On 20 meters, I get the following error message:ERR TXF. The manual
indicates that the crystal filter selected for TX is either too narrow
or too wide, and states the one must specify a filter that is 2.7 or 2.8
KHz for ...SSB. My K3 only has two filters: the 5 pole 2.8 that came
standard and
I updated the firmware to 3.04 last night. Today, after I tune, I get no or low
power out indicated on the RF meter in SSB. Keying down momentarily restores
power in SSB.
Are others experiencing this?
Jim
W6VAR K3 1644
--
View this message in context:
I updated the firmware to 3.04 last night. Today, after I tune, I get no or low
power out indicated on the RF meter in SSB. Keying down momentarily restores
power in SSB.
Are others experiencing this?
Jim
W6VAR K3 1644
--
View this message in context:
Jim - W6VAR wrote:
I updated the firmware to 3.04 last night. Today, after I tune, I get no or
low power out indicated on the RF meter in SSB. Keying down momentarily
restores power in SSB.
Are others experiencing this?
Yes, I've had the same problem, especially when operating split on 40
Try your local drugstore in the MP3 accessory section.
You'll probably find an external speaker with a stereo plug on it, like
this one:
http://wa5znu.org/log/2007/05/kx1-speaker.html
They're $5 or so and run on one AA.
Leigh/WA5ZNU
__
Hi All: Pleased to say that I made some necessary adjustment, and the
problem has gone away...Phew!! Thanks one all.
Bill Wade, Ai4pf
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