It's becoming more recognized that the improved fidelity of ESSB
has signal-to-noise advantages over the old traditional forms of
narrower SSB
... with the decline of new amateur radio operators to populate
the bands, the wider bandwidth necessary for high quality SSB is
not as much
Fortunately the K3 is quite good on AM transmit, unlike legacy equipment
often used. I don't know about elsewhere, but here in the UK there are
80m AM nets where some of the stations run original AM gear without any
additional audio filtering, one was measured at +/- 12 KHz by a fellow
ham with an
Bill W5WVO wrote:
Hi Don,
i had just come to the same suspicion when I read your email. And we are
right.
My homebrew desktop system (Tyan Tiger dual AMD board) works fine. This is
a
Dell problem.
I will look around to see if there is an updated serial port driver that
fixes
Hi all.
I sent this on to support, but I thought I might archive the issue in the
listserve to help others.
I completed assembly of my K3 up to page 45. Other than the antenna module
connectors being super hard to mate because of insertion firmness, all went
well. The next step was the
I installed the K3IOBUFFKT in both of my K3s yesterday. I removed the 1K SMD
chip very easily with two soldering irons. I don't think it is absolutely
necessary to use two irons, however. Like another person said, I used a small
jewelers screwdriver to hold down the new chip while tacking
You need to login in as administrator then you will have full access
or somehow your anti-virus/security software has locked you out. That
ought to be fun to find.
Bob
KB1FRW
73
Have you tried looking in Device Manager at the properties for the serial
port? On mine, on the tab where you can
Aptos, I have a problem:
I have been working the RTTY contest this weekend and everything has
been working smoothly. 700+ Qs in 13 hours.
This morning after being on the air for about one hour and running a
pileup the rig stopped keying and I got a ERR 12V msg.
Here is the setup:
K3/100 w/55w
Let me build your K2. I have built more than 280 K2's to date. My prices are
reasonable, and you receive a new radio, with the options you want. Please
respond off of the reflector.
73
Alan
W1HYV
There might be 2 distinct problems: a) the bandwidth of the signal you
think you have and b) splatter caused by over-modulating and over-driving.
Starting with a wide-ish signal of say 6 or 7kHz, ie dsb full carrier might
be ok in uncrowded bands, but add badly adjusted modulation and drive to
Try resetting the circuit breaker on the rear panel of the K3. See the
Error Message List in the back of the manual for details.
73,
Lyle KK7P
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
This is how I see the use of ESSB, nobody should have more than 3Khz maximun
bandwith on TX,with less than 3Khz you will be able still to have an excellent
audio quality,normally a radio that has a freq response from 100 to 3100 Hz for
a total of 3Khz BW will always sound great so far mic and
I don't think it can be emphasized enough...when installing or repositioning
the concentric knobs, very LIGHTLY tighten them. The light blocker strips in
my new K3 were not properly blocking the front panel light from showing through
the buttons. To correct this it necessitated removing all
I have my K3- S/N 3278 open on the bench to do this mod.
I find the via holes near C66 not open. They have been soldered from the other
side.
Is this an indication that this mod was down before it ship to me 7/10/09??
Or should I just tack on the resistor/diode to them?
de K2GN/Larry
K3 - S/N
Larry,
One of my K3's had solder in the holes and one didn't. With the one with
solder in the holes I just put the component lead (after trimming and
tinning) in the center of the hole and put the soldering iron tip on the
hole and lead. This melted the solder and the lead pushed into the hole.
Julian, G4ILO wrote:
Have you tried looking in Device Manager at the properties for the
serial port? On mine, on the tab where you can set the baud rate etc.
there is a button marked Advanced Settings...
Yes. The advanced settings have nothing to do with the RS-232 control signals,
Bill, even if you make BIOS changes to a port it won't affect the
port's operation under Windoze, since it's all controlled by a kernel
mode driver.
matt W6NIA
On Sun, 27 Sep 2009 11:18:17 -0600, you wrote:
Julian, G4ILO wrote:
Have you tried looking in Device Manager at the properties for
Thanks for that info, Matt. Did not know that.
No controls in the BIOS anyway. I'll just have to live with it I guess.
Fortunately, I can use VOX for TX control and don't really need to use the
RS-232 control signals.
Bill W5WVO
Matt Zilmer wrote:
Bill, even if you make BIOS changes to a
Hi,
i found in the archives a thread where the K3 DVK is controlled by N1MM.
start recording and playing messages works very well. It should be also
possible to stop the Playback by pressing ESC. Not for me and i found
nothing on N1MM.
I got info from N1MM Mailing list there is no CAT command
Jim,
You do not need to worry about having 3.30 on your K3. The beta versions
are being used by many K3 owners regularly and have been exceptionally solid
in my experience. I do not have the sub receiver and I don't have multiple
external transverters, so it might be that I am not stressing
Larry, use solder wick to clear the hole first. It makes a neater job
and reduces the risk of excess solder dropping through the other side of
the board when soldering a component in.
73 Dave, G4AON
K3/100 #80
==
I have my K3- S/N 3278 open on the bench to do this mod.
I find the via
I don't understand why some people like to limit other peoples activity, or
choices.
It seems to me like there is very little important communication going on in
ham radio, so why stress the narrow bandwidth? Would it block some critical
or important communication?
Ham radio just seems like a
I don't know N1MM, but to cancel the DVR you have to tab the REC key. While
in K31 mode, you have to send SWT37;
I hope this helps.
73 de Tom, DL2RUM
Oliver Grossmann wrote:
Hi,
i found in the archives a thread where the K3 DVK is controlled by N1MM.
start recording and playing messages
On Sat, 26 Sep 2009 13:41:09 -0600, Bill W5WVO wrote:
I have always used VOX for WSJT keying
I have always used VOX for both SSB and data modes, even when doing
serious contesting. Works GREAT, simplifies control circuitry. Not a
cough in a carload. The K3 has a particularly good VOX system.
On Sun, 27 Sep 2009 14:31:19 -0400, Brett Gazdzinski wrote:
I don't understand why some people like to limit other peoples activity, or
choices.
Human society DEPENDS on limitations on other peoples activity. To name only a
few simple ones, we have traffic lights, speed limits, lane changing
Dave -
I experience the same issue and Elecraft indicated that the FSK mark/space
power fluctuations are caused by the transmit filter's passband ripple and
where the transmit signal falls within the filter's passband. I'm using the
standard 5 pole 2.7khz filter. They indicated the 8 pole
On Sep 27, 2009, at 1:31 PM, Brett Gazdzinski wrote:
I don't understand why some people like to limit other peoples
activity, or
choices.
Because, like everything else, ham radio is tribal. And we always
want to limit other's activities (ham radio, architectural committees,
political
Bill,Is there any way in diversity mode to have different BW in diversity
and REV? It seems any change to bandwidth in REV also carries
to the main frequency.
BTW, FT5GA lists you on 80 but not on 160m? Is this a mistake?
Ignacy
On Mon, Sep 21, 2009 at 6:13 AM, Bill W4ZV (via Nabble)
On Sep 27, 2009, at 10:40 AM, K5WA wrote:
You do not need to worry about having 3.30 on your K3.
__
My K3 shipped with 3.25 about a month ago. I had one or two noise
burst incidents and moved to 3.3 even though I had not intended to
change FW unless it was a production release.
No
Alex,
Can you please be specific about which HW mods you installed? Are they all
published by Elecraft? I don't recall any 1st and 2nd Mixer mods being
published. If not, can you please share them?
Are the software mods in the current beta FW, i.e. 3.30?
Thanks.
Chuck, AE4CW
Alexander
Brett Gazdzinski wrote:
N2DTS: I don't understand why some people like to limit other peoples
activity, or choices.
AB7E: So it's OK for me to hold a keg party on the street in front of
your house late at night?It isn't about arbitrarily wanting to limit
the activities of the
I experience the same issue and Elecraft indicated that the FSK mark/space
power fluctuations are caused by the transmit filter's passband ripple and
where the transmit signal falls within the filter's passband. I'm using the
standard 5 pole 2.7khz filter. They indicated the 8 pole filter
Hey Brett,
Congrats on a point-on and reasoned argument concerning ESSB.
I get a kick out of some of the contest crowd implying that through
limitations to others people's activity, everyone else's interests are
secondary to theirs.
Over my 30 years on the air, I've observed more rude,
Can´t understand why we cant have access to the documentation for close
inspection. The complete unit is promised to be delivered in half a month
from now so the full basic documentation of the design ought be ready
and available today!
Jan, SM6TUW
Jan,
Could you understand that a major 'player' in finishing the
documentation is also the designer who may be up to his 'eyeballs'
trying to get it ready to go out the door in a couple weeks?
73,
Don W3FPR
SM6TUW wrote:
Can´t understand why we cant have access to the documentation for close
K5WA wrote:
You do not need to worry about having 3.30 on your K3.
__
My K3 shipped with 3.25 about a month ago. I had one or two noise
burst incidents and moved to 3.3 even though I had not intended to
change FW unless it was a production release.
No noise bursts with 3.3. Then I
Of course ... that's what happens when you have literally thousands of
enthusiastic participants scrambling for limited space on the band, most
of whom are trying their best to fit into the smallest possible slice of
it.So what part of that represents justification for taking up more
If you use the
standard 2125 Hz / 2295 Hz mark/space convention, this would make the
signal appear fairly close to the filter's transition band, assuming
there's no center frequency offset applied in the transmit path.
The roofing filter IS offset to put the RTTY tones (Data | Pitch)
in
The roofing filter IS offset to put the RTTY tones (Data | Pitch)
in the center of the filter.
Good to know. That's how I would have done it I were the designer.
I'm surprised I can see a difference between the two tones through
the flatter filter 8-pole filter. It's just enough to see on the
Tune the radio to WWV so that you can synchronize the clock, and then leave the
clock displayed and leave the rig tuned to WWV.
Now, operate the ALT key over and over to switch back and forth between LSB and
USB. After about twenty operations of ALT, note the K3's time compared to WWV's
time.
Eric what everyone at Elecraft has done has been incredible to say the least.
I would love to see these added features or upgrades to the K3.
1. I would like to see a squelch that works on SSB Voice and not be so
sensitive in other modes. In other words sometimes I really have to play
with it
The official K3 Assembly Manual is available as a pdf download from
Elecraft's web site. Why wouldn't that work?
73,
Dave AB7E
Richard Jones wrote:
5. For us who have purchased the K3 assembled it would be great if there
was a manual that would show you how to take it back apart with
Hey Dave,
I guess the Assembly Manual would be a place to look/start. Is what I am
talking about is a Manual that does not have all the other stuff in it.
For example if you need to get to a certain Board it would be nice if
there was a Manual that showed you how to do it. Please do not take
Rick,
So far when I've had to get into the K3 for options mods, the
instructions that came with the option or mod explained very carefully
and clearly how to get into the specific area of the K3.
Mark
On Sun, Sep 27, 2009 at 10:03 PM, Richard Jones r...@prismnet.com wrote:
Hey Dave,
I
I understand. I just thought that maybe you didn't notice the assembly
manual was there.
For the most part, though, following the assembly manual backwards
probably is the safest bet. It gives step-by-step instructions,
complete with cautionary advice you'd be wise to follow anyway. It's
We kept our frequency on 14.314 MHz again today to try to dodge some QRM
that has been persistent on 14.316 for some people. We had 14 participants
including net control and ran for 14 minutes. The discussions were about
difficulty getting stereo out of the headphones for one station and help
The QRM on 14.316 is unlikely to go away, ever. This is the 4th
harmonic of 3.579 MHz, the TV color burst frequency, and a popular
choice for oscillators in all sorts of consumer and office devices (not
necessarily TV receivers). This has been a problem on 20 meters for at
least 30 years
46 matches
Mail list logo
