Hi Doug,
Can someone explain to me why the above/below results
for these two filters are so disparate at these narrow
spacings?
Let me speculate...
you might want to read the description by PA3AKE, especially the
chapters on his development of his roofers:
Hi Rolf,
I have had this problem about a week ago, my K2/100 would
not talk to HRD or K2 Remote. I checked all cables etc no problems
there. However I found that I had lost the side tone on cw, I then
discovered that the K2 had somehow reset the U8-4 source to the default
U6-25
Barry,
Shortening of characters in QSK is a common issue in many transceivers
though it seems less of a problem in the K3. What you should really use to
combat it is 'Keying Compensation' which you will see in for example Winkey
configuration settings and other external keyers; it lengthens each
Toby Deinhardt wrote on Thursday, November 27, 2008 at 9:17 AM:
you might want to read the description by PA3AKE, especially the chapters
on his development of his roofers:
http://www.xs4all.nl/~martein/pa3ake/hmode/index.html
He talks about, among other things, how important clean surfaces
No one has commented on the apparent shortening of the first dit as
illustrated in the QST review, Figure 1.
My K3 keying does not have that issue as far as I can judge from listening
on a separate receiver.
What is does have is a disparity between keying weighting between MOX
(either
Hi Geoff,
Not to forget that in a design such as the K3, it's the first 20dB to
30dB of stop band attenuation which are really important.
Maybe, assuming that the IMD performance of the roofer and ALL stages
which follow the roofer is good enough at those spacings.
It also depends on
Hi All,
I have to agree with Erik 100% on this. After years of using the K2 I
either use the tip of my forefinger on the edge of the VFO knob to roll the
knob around, or I use it on the outer edge of the front face. Same with the
K3. My K2 knob looks burnished from doing this.
Actually I think
Table 2 of the ARRL review finally answered my questions about the relative
performance of the 2700 and 2800 Hz filters at 1 Hz and 2 Hz spacing. The
results are very impressive. Can someone explain to me why the above/below
results for these two filters are so disparate at these narrow spacings?
After months of using my K3, I am spending time again with my K2. It is set
up as a QRP model, and I recently upgraded it with the DSP option.
I had forgotten what a pleasure it is to use the K2. I know that the specs
are not as good as its K3 big brother, but the receiver is still a thing of
The recommended K2 substitution knob is the main tuning knob from a Yaesu
FT-900, it's much heavier and has a nice feel. I ordered mine from a German
Yaesu dealer.
Hummm think I'll pull it off the K2 and see how it fits K3 S/N 906.
Vy 73, Bob DJ0MBC/WU5T
Hi Lyle,
If you look at the larger values of attenuation (134 vs 115, or 113 vs
93) the result is mostly due to the difference in shape factor of the
roofing filter. Expressed differently, an 8-pole filter is likely to
have a steeper slope in its selectivity curve than a 5-pole filter.
But
Hi lyle the List,
... higher distortion of the Nutzsignal due ...
das Nutzsignal = the wanted signal
Sorry about the German which kinda snuck in.
vy 73 de toby
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Ladies n Gents
I use my Heil Headphones HC-4 most of the time for SSB operation, but I was
wondering what people use for a Desk Mike for the K3. I don't have one if the
Heil set goes bad. I thought I would pick something up. What are you using if
anything?
Lee - K0WA
In our day and
Wanted to trade a Hi-Q-antennas NVIS Hi-Q-3/80 TAD, used twice,
excellent condition for either Elecraft K1, K2 DSP, or partial trade
towards a K3.
Non-military version -- NVIS Hi-Q-3/80 motorized remote TAD
tune-a-dipole on mounting base.
2 Giant Quick disconnects (GQD’s)
2 Whip Quick
Hi Group,
My PR6 pre-amp arrived here today and I've got it connected.
I'm not sure what I'm doing wrong, but I simply can't get it to work.
12v is taken from the AUX supply. (The 12v is good)
The White CTRL lead is connected to pin 11 on ACC
On the 6m band I've set CONFIG: DIGOUT1 to ON
I've
When I first got my K3, I wanted a nice pair of speakers so I bought two
Tivoli Audio extension speakers from their outlet store. They look and sound
nice, although they have gone way up in price lately.
To get the maximum effect from the stereo AFX performance, I placed the
speakers several
I wonder why?? The K3 knob is wonderful the way it is. Nicely weighted
with a dimple and a nice rubber skirt. I think the K3 knob is great.
73
Greg
AB7R
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Bob DeHaney
Sent: Thursday, November 27, 2008 8:03
Thank you Lyle. It never occurred to me that this was purposeful. I adjusted
the filter offsets with the 500 and 200hz filters to more closely center
them.
Guess I'll believe the factory settings from now on!
tnx, Gary W7TEA
This asymmetry is due to the way in which the K3 aligns the
Yo,
I'd like to publicly thank Gary-AB7MY and Katie and Lisa for their
excellent, accurate and prompt service regarding the resuscitation of
my deaf K3 #1561.
The rig developed a problem that I couldn't diagnose or fix in spite of
Gary's email tutelage. I shipped the rig to him while the
Toby Deinhardt wrote on Thursday, November 27, 2008 3:33 PM:
Hi Toby,
It also depends on whether you are talking about signals within the pass
band of the roofing filter or signals in the stop band. I would argue that
within the roofing pass band the K3 does have weaknesses, but if the
With the Elecraft upgrade kit shipped to the UK costing over $20 for a
100 uH choke and two surface mount resistors (yes I know there are 4 in
the kit and two axial ones), I wound a choke and used two surface mount
resistors from my spares/repair kit. For anyone who is struggling to
justify buying
I'd like to echo Lew's experience on a K3 repair. I had a minor problem with
s/n 1417 that I could not track down despite many emails back and forth to
Gary, AB7MY. He even sent parts that I was willing to install myself. When
all else failed, I sent it to Elecraft for service. I sent the
Hi Lee
I am using an Icom SM20 (which I kept when I sold my PRO3). The plug needs a
bit of rewiring but it really performs.
I use it with the low cut on and some emphasis of higher frequencies in
the K3.
I get fantastic reports on the audio.
73
Barry VK2BJ K3 #1397
From:
On Thu, 27 Nov 2008 10:09:10 -0800 (PST), John W2XS wrote:
Maybe it is not a good idea to have the speakers too far away
from
each other.
Yes, it's a speed of sound issue, and the algebraic addition of
sound waves that are arriving at your ears at different times.
This may help you
Hi Geoff,
Which could be taken care of by using a 6dB resistive pad, should the
lower loss become a problem.
A pity to lose any potential improvement in overall noise figure by
doing that, especially on the higher bands!
Yep. It would be nice to avoid the resistive pad but any gain on the
I would like to get a spare K3 main tuning knob. Anyone want to part
with one?
Aloha,
John KH7T
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Help:
I'm having trouble downloading the DSP firmware to the KRX3. Despite multiple
attempts, in the table Firmware Versions for K3 Serial Number 00162 , under
Installed in K3 still lists N/A for DSP2. The KRX3 seems to work
properly, and all other entries in the table seem to properly reflect
Lee,
I use an Elecraft MD2, but you can't get them anymore. I also have an
old D-104 microphone that had a damaged crystal element in it - I
replaced the element with a Heil HC-5 and a bunch of foam some time
ago. The mic plug is wired to mate with the Elecraft pinout. Heil has
a
Yes, I am also convinced that some configuration settings spontaneously
change when upgrading firmware. Unfortunately so far I have not been good at
making notes when this happens, but I will next time.
Joe Planisky wrote:
I seem to recall a few postings to the list where it seemed that
Lee, I use an inexpensive AKG professional dynamic mic (specific model no
longer available) that looks like a knockoff of a Shure SM-58, the pro-audio
standard for wired dynamic mics. These mics are under $50 on sale from
musician stores, e.g. Guitar Center. The output is XLR low-impedance
Dave, G4AON wrote:
With the Elecraft upgrade kit shipped to the UK costing over $20 for a
100 uH choke and two surface mount resistors (yes I know there are 4 in
the kit and two axial ones), I wound a choke and used two surface mount
resistors from my spares/repair kit. For anyone who is
Hello all, I've added some more convenience to K3 operation, how about seeing
the DSP bandwidth without pressing any buttons? That's new. Also added one
click selection at .1, .5, 1, 1.8, 2.4, 3.3, 4.0, and 6.0 khz DSP bandwith. One
click band stacking and analog S-Meter remain standard.
Photo
Just wondering if it would be a SMOC to add the ability to store the
power setting by operating mode, in the same fashion it's currently done
by band (i.e. config option).
I have caught myself calling CQ on PSK-31 at 100w a couple times already...
Steve
AD7OG
On Wed, 26 Nov 2008 17:20:48 -0800, Joe KB8AP wrote:
Has anyone else noticed inappropriate configuration changes after
loading new firmware?
73
No, not after loading firmware, but changes in band mapping can occur
when you stray out of the ham bands. For example:
If you have 80/40/30/20
Right after a firmware change a few weeks ago I noticed that my in-band
(band segment) settings for M1 through M3 had disappeared for all the bands.
Cause and effect not proven.
73,
Erik K7TV
- Original Message -
From: ab2tc [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent:
I just saw this on the Elecraft site.
Newly received K3 orders are now delivered approximately 1.50002 months (or
less) after order date.
It seems to me that the number of months is a little too precise to be
realistic. LOL
Nelson - K8DJC
K3 #560
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