What are the benefits of using Data-A mode for psk31 as opposed to standard USB.
The manual p29, mentions that DATA mode offers several benefits not available
in SSB modes however
other than automatically setting CMP to 0, I can't see much else happening.
Does Data-A route the signal
If you read the reviews, mine is the 2nd from the top. Not a lot of
reviews in the last year or so. I stated there what I think of the rig
so I won't repeat it here.
The K2 is not a typical rig and those who expect a typical rig would do
better with an Ikensu. K2 really optimizes RX
DW:
As one of the Elecraft list members told me some years back, the few
disgruntled users are much more likely to post to eham than the many
happy ones. It does seem to be a watering hole for people whose
favorite sound is that of their own voice raised in complaint. With
over 5000 rigs out
Hi Guys
I found the mistake..
I have a Microham Keyer between the mike and K3
Somehow it messed up my settings so that i have output on 40 and 20
and if i switch to DATA A i have output on the other bands...
So no K3 fault my fault not looking into the routing...
Why it changed dont
Hello,
If you would have read the rest of the E-Mail, I commented that the majority
of the low ratings were for the K2/100 dealing with SSB. That was my
question, not the reviews on the K2 QRP version of E-Ham.
Best,
DW Holtman
WB7SSN
- Original Message -
From: ni0c [EMAIL
Hi Jack. I've been up for awhile ;-)
For those who are interested, the data was taken from the Rx antenna
input to the IF output. The scales are either 5dB or 10dB/ vertical
division, as indicated in the legend at the top of each chart. The
markers are at roughly the -3dB points. The behavior
According to WB7SSN: I went to the E-ham web page
and read some of the reviews. There are a lot of
people who really do not think too much of
the K2. One or two might be some crack pot,
but there are a whole bunch of not happy users.
All of the magazine reviews seem to love it.
Comments on
DOUGLAS ZWIEBEL wrote:
Recently, they guys at Aptos said:
[snip]
The pick-off point for the K3's buffered I.F. output -- right at the
output of the 1st mixer's post-amp stage -- was selected to give the
widest possible bandwidth. Thus there is no filtering of any kind from
here to the
It's probably too early in the morning for Larry, N8LP, to be up, so
I'll mention that he has measured K3 RF filter bandwidth data posted at
http://www.telepostinc.com/K3_Stuff.html.
Jack K8ZOA
[EMAIL PROTECTED] wrote:
Hi Doug,
OK...just how wide is the bandwidth when limited by the K3's
Gee DW - Those who have said in their review that they are unhappy have also
said why they are unhappy. If you want more information on their
evaluation, why not just ask them? Seems pretty simple. Very few on the
reflector are mind readers! '73 -- Don N4HH
SNIP
Hello,
If you would have
I have found it impossible to reliably set my BFO frequency in the proper
place for SSB operation using only Spectrogram. Spectrogram is invaluable
for the first adjustment. I can get close with it, but to have audio that I
like, it's necessary to do the last step recommended in the KSB2 manual:
In case you haven't looked at N8LP's site lately, check out his progress on
the LP-PAN for the K3 wideband IF output. This is really looking great!
Nice work Larry!
73, Bill W4ZV
Here is an expanded list of features...
* Optimized for K3
* Up to 192 kHz display on PC, sound card dependent
I have had opposite experience. I use mine (Serial 8XX) on both ssb and cw. I
have had excellent audio reports and busted lots of pileups with 5-10 watts ssb
due to excellent audio quality. I do have a small preamp on the back of the mic
connector and I use all Heil mics.
I believe a K2
Hi Barry,
Yes it's on receive. It's more than leakage, more like both antennas are
connected during receive.
Ed
- Original Message -
From: Barry N1EU [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Friday, February 08, 2008 6:29 AM
Subject: RE: [Elecraft] K3 Rx Antenna
Dear Mr. Holtman.
The K2 for ssb use is a kit rig that isn't finished when last component is
soldered.
It take some tweeking of filters and on air play to fineadjust this beauty.
Don's approach is a good start.
The mic is of high importance.
Myself wasn't to happy for a long time and I didn't
Very cool!! Now I'd be interested to see what those measurements look like
with the general coverage receive board installed to see how much it truly
doesn't affect performance.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jack Smith
Sent: Friday,
This is a reply to the original message, but since the K2 is a kit,
there are lots of ways to screw it up. And you know how it's never the
user's fault when there are problems.
Just my guess. My K2 worked like crap because I broke RFC15 (and I have
lots of building experience) but I was able to
G4ILO wrote:
You can select the back sockets for the audio input for that mode,
with a separate mic gain setting, so you don't have to keep swapping
the mic cable over. At the moment you have to change the mic input
manually, but I think one of the things on the list is that it will
remember
It might be that in addition to low ratings caused by improper alignment,
some of the low ratings are from people who push the ALC too hard when using
SSB. One bar just flickering is plenty enough for my K2/100 #3255 which has
none of the 'official' modifications installed.
73,
Geoff
GM4ESD
.
Tim O'Rourke wrote:
I have had opposite experience. I use mine (Serial 8XX) on both ssb and
cw. I have had excellent audio reports and busted lots of pileups with
5-10 watts ssb due to excellent audio quality. I do have a small preamp on
the back of the mic connector and I use all Heil
Hello elecraft list,
I need some help with troubleshooting my K2. I destroyed my finals (twice)
due to a shorted cap (C4) in the KAT2. For troubleshooting purposes, the finals
have been temporarily replaced with 2SC2078's ($0.68 vs. $6-11 for the
2SC1969's). My problem is when I TX at
I ordered the option a few days ago, Brett, but haven't received it yet.
73,
Larry N8LP
Brett Howard wrote:
Very cool!! Now I'd be interested to see what those measurements look like
with the general coverage receive board installed to see how much it truly
doesn't affect performance.
I would like to connect my trusty R-4C as second receiver to the K2 and am
looking for the best way to install a rx-in and a rx-out jack (as in some
Icom transceivers). Together with a 3 db splitter it should be possible to
use both receivers at the same time. Has anybody on the list done that
#355 is now on the air with 10W.
Many thanks to Eric and Wayne and the Engineering staff, those involved in
the manufacturing of it and the logistics folks who all help.
'Tis well documented and went together very nicely.
Chuck Boblenz AD6GI
**Biggest Grammy Award surprises
My K3 has yet to arrive, but, wouldn't this punch come from the voice
equaliser? ie setting the voice band to suit your own voice to peak in the
right place.
David
G3UNA
If I wanted to be controversial (what, me?) I'd say that the K2 SSB audio
is
better than the K3's. The K3 sounds
Trevor Smithers wrote:
What are the benefits of using Data-A mode for psk31 as opposed to
standard USB.
The manual p29, mentions that DATA mode offers several benefits not
available in SSB modes however
other than automatically setting CMP to 0, I can't see much else
happening.
Does
Damon,
First, remove the KAT2 and operate the K2 into a good 50 ohm dummy load,
and use some valid method of monitoring the actual power output.
If the same thing occurs, than look in the K2, but if it behaves
properly, look at the KAT2.
If you have a K2 problem, How much is the power
I agree that the listening tests are essential. My approach without using
Spectrogram was to measure the frequency response of the KSB2 and
transmitter audio circuits combined, without compression, to get a rough
idea as to what the BFO frequency should be. I then 'tweaked' the BFO
frequency
Wolfgang
One way is shown on my web site:
http://www.astromag.co.uk/k2/K2externalRX.pdf
73 Dave, G4AON
--
I would like to connect my trusty R-4C as second receiver to the K2 and am
looking for the best way to install a rx-in and a rx-out jack (as in some
Icom
Hello,
First let me state, I was not trying to run down the K2. Just curious about
the reviews. I own a K1 and I'm on the waiting list for a K3. I would not
sit around and wait months for something if I did not think it is the best
available.
Thank to most that responded both on and off
Personally I wouldn't trust any over the air comments while trying to
adjust my TX audio.
You must have overheard this fiasco on air!
Almost everyone has a different view of how audio should sound, not to
mention how they have you tuned in and their particular preferences. I
really hate that heavy
This is an assembled K3 with 6.0, 2.7 .5 filters; also includes the general
coverage RX module. All seems to work great. Ordered May 3 without deposit.
Thanks to all at Elecraft, including Cody who built the rig. ..73 Steve,
W6HPK K2 5039, K3 365
Perhaps Ed will clarify, but my take is that Ed's post is a different issue.
I believe he is saying that while he's in RECEIVE mode with the RX ANT
selected, there's leakage of the receive signal on the transmit antenna
feedline into his receiver - poor isolation in the receive antenna
Recently, they guys at Aptos said:
[snip]
The pick-off point for the K3's buffered I.F. output -- right at the
output of the 1st mixer's post-amp stage -- was selected to give the
widest possible bandwidth. Thus there is no filtering of any kind from
here to the BNC jack on the KXV3. This creates
Hi Doug,
OK...just how wide is the bandwidth when limited by the K3's BP filters?
For what it's worth...
A quick and very dirty attempt to simulate one of the filters using
Elsie 2.12 (free version) gave me in the 10m band filter a -3dB width
of roughly 2.7MHz, after some tuning - 40pF
I agree. Most of the reviews are from SSB operators, and the complaints on
filters are probably because they are not adjusted correctly. The problems
listed are alignment issues. I use my K2 with a Heil HM-5, and get great
audio reports with the standard SSB bandwidth.
Mike
AI4NS
Hi,
I havemeasured the standby current of the K3 at around 7mA.
Is this typical ? Might be aproblem for floks wo leavethe
radio connected t oa 12 car battery for extended periods?
Bob ZD8RH
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Yes.
Minimizing the transmit bandwidth improves the signal/noise ratio for a
given output power, whether it's done with an I.F. filter, as in the K2, or
an audio filter system such as an equalizer in the K3. As the transmit
bandpass is reduced, the position of your voice audio spectrum in that
Note what Don Wilhelm W3FPR is telling you about the SSB performance of the K2,
it is excellent
in my opinion.
I use SSB exclusivley primarily to work DX and almost always get the DX station
on my first call, so
something must be right with the audio in the K2. Do as he suggests, properly
set
A feature to remember the MIC SEL source by mode is in the firmware now
being tested by the field test team.
73
Greg
AB7R
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Bill W5WVO
Sent: Friday, February 08, 2008 10:24 AM
To: elecraft@mailman.qth.net
I have had my K2 with SSB, DSP, Noise Blanker, and KP100 for about a year.
I had a few problems of my own making while building it, and Don/others
helped get things straight. I work mainly CW. I use SSB only when that's
the only mode for desirable DX; my mike is a Heil HC4 plugged in directly
The tuner has been ruled out as a cause to the problem. The K2 will show
the same behavior into a dummy load either with out without the internal tuner
installed. The radio itself did work for about a week with full (15W) output.
My best guess is the initial problem happened as a result
If you don't do AFSK RTTY with a K2, you won't be interested in this.
Getting ready for WPX RTTY, it has taken me two days to solve a problem
I don't remember ever having before ... the solution might help someone
else.
My RTTY setup is minimalist: Sound card line-out goes to the mic
The CQ RTTY contest starts in a couple of hours and runs Sat/Sun GMT. This
is a great opportunity for all those new K3's to strut their digital stuff.
I won't be hugely active, just exercising the K3 and the rest of the station
on a mode that is (re-) new to me. Hope to hear lots of you on.
73,
Serial number 367 received, ordered May 15th, no deposit, arrived Feb 8th de
Jim KE4WY.
UPS gave me a scare. The guy pulled up and was spending a lot of time in the
truck so I walked up to his truck and he said, Looks like it's not on the
truck.
Since it is Friday lots of fireworks such
I am unable to get the XVTR port to work on receive (haven't gotten to
transmit yet)
I have the menu items set up for transverter use, and I can get input to the
radio just fine into the antenna or the RX IN port, but nothing on the XVTR
IN port.
I'm sure it's a setup issue, any thoughts?
Thanks
Hi Phil,
I'm not a transverter user, but seems like you have the XVn PWR setting to
Hxx instead of Lxx. The L setting activates the Xverter IN/OUT and the H
settings uses ANT 1/2. Its recommended you use the L setting to avoid
transmitting high power into the transverter.
From pg. 36
XVn PWR
Bob,
I'm assuming you mean when it's off. I think most car batteries
are at least 100 AH. It can run some 14,285 hours or 595 days or 1.6
years to drain the battery entirely (if that's possible!). Anyway, I
think you'll find that, if you measure drain on your car battery with
everything
It's here - a Cool new program for the RS232 user
interface of your Elecraft K2 and K3.
It's called ProCat (the series of CAT that I have been
maintaining for various HF transceivers for over 10
years) and Cool because it's for K2 and K3.
The program is meant to provide a simple visual
Hello Gary,
Friday, February 8, 2008, 9:16:59 PM, you wrote:
GH Eventhough you resolved your problem you might be
GH interested in the reply belowfrom Elecraft.
The problem seems to be in the EEprom.
Somehow it got RF on his belly and stopped funktioning normally
I did all the stuff down
My K2 is excellent on SSB.
Care in alignment is necessary.
John KH7T
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Listening to one's own speech via another receiver, to optimise one's own
transmit settings still gives a subjective result, *on average*, no better
than another radio listener. Inevitably, it will be a question of personal
taste, unless you have special training. It is true that radio
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