Steve Kallal wrote:
For example, early SSB rigs used a balanced modulator that nulled the
carrier. Then a filter selected LSB or USB. I think true SDR would do
that entirely in software. How does the K3 generate SSB?
In software.
--
David Woolley
Emails are not formal business letters,
got my notification of pending shipment from Katie last night
73 de M0XDF, K3 #174
--
Times are bad. Children no longer obey their parents, and everyone is
writing a book. -Marcus Tullius Cicero, statesman, orator and writer
(106-43 BC)
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Katiegram July 2, shipped July 11, Received Priority Mail July 14, 2008.
Ordered May 1, 2007 with K3 #125 kit.
Aloha,
John KH7T
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Lee Buller wrote:
If I am not mistakenyou have to have a filter in the FL1 slot. The K3
has to transmit through the widest filterand I think that should be in
the FL1 slot.
No you don't. As has been pointed out, the filters do need to go from widest
to narrowest. But I had an
Received invoice/notification that KRX3 will ship within next week or 2.
73, Ken K3IU
K3 #202
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Hi Kevin,
Good to hear you on ECN. One change, my K3 is #1208 not 1207. It sure seems
like a very nice radio. I took it to the cabin over the weekend and got in
some nice QSOs. Had to come home early so we could attend my grand
daughter's sixth birthday party Sunday afternoon. So. I missed
My KRX3 kit arrived this weekend, and built it yesterday. Installing it took
quite a few hours, but instructions were clear and it installed without any
issues. Draping small coax links were annoying as they have to be plugged in
to the module, then find a residence that doesn't prevent the
Well, there is no official ARRL position on what is and isn't an SDR, but
there is an FCC definition.
This is part of an article on SDR I wrote for my every-other month beginner
column in QST:
from article text
The FCC has defined the SDR concept in terms of their commercial
certification
http://www.elecraft.com/elecraft_shipping_status.htm
Between now through Friday July 25th we should be shipping K3 orders
received through March 13th.
New K3 orders received are targeted for delivery four months after
order date.
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Hi All,
I have my KAT100 KPA100 in a separate EC2 enclosure. And I have been
QRP for a while.
The feeder to my dipole antenna on the roof was made of two RG-58 cables
with BNC connectors.
The connection between these two cables was not properly made since I
had used ordinary electrical
Steve,
Yes, the 4 MHz reference may have to be set a few Hz different than
exactly 4.0 MHz to calibrate the dial accurately.
The best method I know of is to feed the K2 audio into a computer
running Spectrogram. This method compensates out any difference between
4 MHz and the actual
On Mon, Jul 14, 2008 at 11:41 PM, Steve Kallal [EMAIL PROTECTED] wrote:
Sorry, but I'm not sure I agree. By that definition many radios since the
80s would be SDRs.
Not many radios from the 1980s are SDR, Affordable DSPs from the 1980s
didn't have the bandwidth necessary to sample from the IF,
cloud runner wrote:
I did find that when linked if I tuned
the frequency change seemed to stutter. this may have something to
do with filters not being matched.
This is a problem which Wayne knows about and has on his list to fix. A
workaround is to press DISP and change the VFO B display
Lyle,
My opinion on the subject.
Since you and Wayne hold and write the firmware, in your hands, it is
fully an SDR.
But I believe in the hands of the user, it could be called an FDR -
Firmware Defined Radio.
The Flex on the other hand uses open source code that *can* be modified
by the
To me the K3 is not an SR (Software Radio) but an SDR. Not all the
functionality is implemented in software, but enough of it is so the
software constitutes the lion's share of the rig's functionality. The
software isn't the radio but it defines it. SDR.
- Keith N1AS -
- K3 711 -
Rolf,
If the diodes were blown, there is a possibility that the op amps connected
to them were also blown. In the KAT100 and KPA100 this would be U5 and maybe
U6. U5 provides the FWD and REFL power voltages for the SWR measurement and
U6 provides the RF level signal VRFDET. If any of these
-Original Message-
Lyle,
My opinion on the subject.
Since you and Wayne hold and write the firmware, in your hands, it is
fully an SDR.
But I believe in the hands of the user, it could be called an FDR -
Firmware Defined Radio.
The Flex on the other hand uses open source code that
However, i usually end up in SSB with the previous filter setting,
ie., the narrow CW filter, and of course it's not enough for SSB.
Of course, i only have to press the NORM button to broaden it,
but it's annoying.
I don't have the same problem when QSYing from SSB to CW (the
width is
Rolf,
The display of 20 watts is correct - the firmware limits the KPA100
power to 20 watts when tuning at high power.
The fact that it appears not to complete the TUNE is a potential
problem, but if you have replaced the diodes in the KAT100 and they are
still good, *and* it tunes
Hi Bud,
I dont like using the RIT when running stations as it is easy for me to
grab the wrong knob...VFO B instead of RIT or, if I forgot to engage the
RIT and promptly QSY myself away from my own pileup! Here is what I do
and it works pretty slick in the contest
AB; Hold B SET; Hold
On Mon, 14 Jul 2008 13:53:57 -0400, Don Wilhelm wrote:
DHL uses do a good job, but others will just leave a parcel
most anywhere from the mailbox at the end of the driveway to the
house!
That's the bad one (and their predecssor, Airborne).
Jim
Well, I actually like the toggle feature when trying to work DX split. The
RIT switch is easy access to toggle between the DX's transmit and receive
frequency.
But once the second receiver arrives I won't need this feature as I will be
able to listen to both frequencies at the same time.
73,
Chris
Is this simply an issue of RF being picked up by the antenna connected
to the output of the linear, which it would see as reverse RF whenever
you transmit directly from your K3 on another antenna?
Also you can measure the RF from ANT2 when transmitting on ANT1 fairly
easily... On my
I don't see this with Logger32 . But I had to add some lines to the .ini
file
so the program would change the filter to what I specified - 700 Hz on CW,
2.7 KHz on SSB and 1.0 KHz on Data.
If the program does not tell the K3 how to set the filter when you change
band and / or mode it will
I made some measurements of the isolation between ANT 1 ANT 2 on
my K3.
There is little difference between ATU BYPASS. Unable to do
50MHz.
1.9MHz 58.1dB
3.7MHz 51.9dB
5.1MHz 49.2dB
7.0MHz 47.1dB
10MHz 44.7dB
14MHz 42.5dB
18MHz 40.8dB
21MHz 39.2dB
One other thing to check if you haven't already solved this issue is
the FLTX parameter in the CONFIG menu:
FLTX{md} Default: FL1 (all modes)
Used to specify which crystal filter to use during TX. {md} =
CW/SB/AM/FM. Choose filers with bandwidths as follows: SSB, 2.7 or 2.8
kHz (also applies
Don,
I finally got to within 10 to 15 Hz at 10 MHz now. I decided to use MixW
for the 500/600 Hz WWV tones. It works really well for that part of the
calibration.
I had misread your web site. You do endorse the N6KR method. I did find
the WWV Signal Format web page. Out here on the west
Steve,
When you can receive WWV and WWVH at the same time, that is handy
because there is a tone both at 500 Hz and 600 Hz on each minute. WWV
and WWVH do not transmit the same tones at the same time.
Glad to hear that you are now up and running and are about as close as
you can expect.
Hi all
Having sols my KPA100/KAT2100 and my XV-5-,144 and 432, I have for sale:
KAF2 built and aligned at 600hz 25.00 = shipping.
Top cover, front panel and 1 bottom plate for a EC-2 + a couple 2D fastners.
10.00 + shipping.
K-2 # 5423 with the following:
KAT2, KIO2, KDSP2, KSSB2, KNB2,
Hello Dick et al. On noting your K3 Serial Number, and wishing to understand
the radio and the company much better, I am puzzled by Serial Number
chronology. My K3 rolled off the production line approx 21 days ago and its
Serial Number is 1054, yet I am seeing numbers out there that are in the
Hi John,
I am not sure how Elecraft is issuing serial numbers. I thought I read
somewhere that there could be differences in the sequence of kits versus
assembled units, but I cannot find anything on that. Maybe I was dreaming,
again.
Maybe someone else can enlighten us.
73, Dick, W0NTA
I am not an insider, so I don't know but I get the
impression that when they sell an assembled K3 they
first assemble a kit and then have one of their techs
build and test it. If they assign the serial number
when they assemble the kit this would throw the
assembled units a few weeks later than
On July 3rd, Eric had posted the following reference serial numbers in a
message titled KRX-3:
We are shipping in two parallel groups: kit and built K3s. Since -F
built K3s are built to order, and because the kit and built versions are
built on different production lines, the s/n sequences will
Thanks David. I knew I saw something about serial numbers somewhere. I just
used the wrong search parameters when I went looking.
73, Dick, W0NTA
Greeley, CO
David King-11 wrote:
On July 3rd, Eric had posted the following reference serial numbers in a
message titled KRX-3:
We are
Brian - you asked about modifying the Heil ICM microphone for use with
the K2 so it'scompatible with the Elecraft MH2 microphone.
You need to make changes to the ICM plug. There are only 4 connections
in the plug. You only need to change two of them.
1) The audio on pins 1 and 7 do NOT need
Hi All--
The last you heard from me, I had just replaced the front panel to cure
a balky radio (wouldn't turn on). Well since replacing the front panel
this rig has proven to be very reliable...no unpleasant surprises.
The whole package really seems to me to be a great value. I just love
I've been using HRD and DM780 for a few months now on my new K2. It
has worked wonderfully. Suddenly I can no longer connect to the
radio.
I have checked and rechecked settings and connections. I'm using a
USB to serial adapter, but its the same one I have always used and it
works on other
Jim,
It could be either the computer (and serial adapter), or it could be the
K2 itself.
The best way to proceed is to check using the simplest configuration -
try the communications tests outlined in the KIO2 manual. It would be
best if you can try it with a computer having a real serial
Either way you have the toggle feature as you can just use the RIT
button instead. Both ways work. I'm not partial to either. Its just
one of those things you get used to.
On Tue, 2008-07-15 at 09:25 -0700, N2TK wrote:
Well, I actually like the toggle feature when trying to work DX split. The
This is likely. When Elecraft made an error and shipped me a kit
K3 instead of the factory-assembled one I had ordered, I sent it
back to them, they built it, and they sent it back to me. Same
serial number (888) as the kit I originally received.
Bill W5WVO
- Original Message -
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