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Hello Om’s
I am the happy owner of a K2 and I need some advices on the alignment
procedure. My K2 is off frequency by about 300Hz. (I'm using an Orion for
the test)
I start from “4MHz Oscillator calibration” using an external counter. On TP3
the frequency on the internal counter is abt 12078
There is another way of looking at it-- how many additional contacts
would potentially be available by utilizing an increase of just 3db?
I don't know the answer but there is a somewhat analogous situation in
astronomy having to do with the brightness of stars. They are also
measured on a
Adi,
The PLL range has no relationship to the adjustment range of C22.
How confident are you that the external frequency counter is accurate?
That is an important consideration.
An alternate (and better) method is to tune the K2 to a station that you
know the broadcast frequency with
Commands with the ! or @ prefix are Direct DSP control commands, not
commands that are executed by the main control processor in the K3.
These commands are not supported by the macro facility within the K3 at
this time. They are only supported by K3 Utility. See Important
Restrictions on
It is pretty widely accepted in contesting that an improvement in
*either* receive or transmit capability of 1 dB will yield a useful
increase in the number of QSOs over a 48-hour contest, even if it has an
indiscernible effect on 99.5 percent of your contacts.
73, Pete N4ZR
The World Contest
Adi... further to the message by Don W3FPR, the Russian standard
frequency transmitter which is very strong in Europe is RWM. For their
frequencies and schedule see: http://www.irkutsk.com/radio/tis.htm
73 Dave, G4AON
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There's a saying among VHF / UHF'ers in reference
to coax and connector losses that every .5db counts.
73! Ken - K0PP
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Help:
I received shipping confirmation for my kit yesterday. Have patience!
Jerry AI6L
-Original Message-
From: Jim Brown [mailto:j...@audiosystemsgroup.com]
Sent: Monday, June 06, 2011 10:41 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 Kits
On 6/6/2011 8:27 AM, Rob May
The 10W output of the KX3 can be increased to 100W via the amplifier for
mobile and portable operation. To increase the output from 10 to say 30W
will greatly restrict the battery life and I don't see any real advantage.
Either the KX3 is a QRP radio or notadding another 10-20W available on
But bear in mind this is at 9996kHz, 4 kHz away from 10MHz. I thought
the way the K2 PLL worked meant you had to calibrate at exactly 10MHz,
so calibrating against RWM may not give correct tracking on all
frequencies. It also transmits a pure carrier only for a few minutes
each hour, making it
Dave and all,
Actually the frequency of the station makes no difference at all. The
secret is that the difference between the VFO and BFO frequencies (in
LSB or USB only) is equal to the frequency of the station you are tuned to.
With 10 (or 15 MHz) WWV, the subtraction is easy since all but
I read Jim Brown's very informative article on RFI and want to use his method
to construct a K2/PC control cable using some CAT5 cable I have laying
around. Hopefully Jim or someone knowledgeable about this cable can answer
two questions:
For UNSHIELDED twisted pair CAT5:
The K2 instructions use
I can understand the advantage of even 1 db to a serious contester over
the period
of a lengthy contest but for my needs, and keeping in mind maximizing
battery power,
the 10w of the KX3, and even 5w, is fine. I have other rigs that are
capable of 100w
in the shack, but now that I'm retired I
True at UHF/VHF. The world if HF is quite a different place for most of us.
If your purpose is to find that sweet second or two where a very brief
exchange might be confirmed on HF, a difference of a few dB might count, as
Pete notes.
But for communications involving a lengthy exchange of
If I hit the Oper/Stby buttons on the KPA500, the K3 displays a message and
selects the proper power drive level. However, I've enabled BAND CHG to
STBY, which switches the KPA500 to STBY whenever I change bands. It does
that, but going to STANDBY by changing bands does NOT send the STBY message
Brian,
Jim may chime in here, but these are my considerations:
Beware of pin 1 - it is ground ONLY only for the K2. At the computer
end, the shell is chassis ground (if it exists at all).
You only use 2 of the 4 pairs in the CAT5/6 cable - one for TXD and one
for RXD.
So for unshielded
To try to put some meaningful numbers on the value of a few extra dB I
looked at some recent contest scores. Actually not at the scores
themselves but the number of Q's made. There is of course wide
variability in this. A lot appears to depend on whether it is
primarily a NA contest or
It all depends how close the desired signal is to the noise level.
Check out
http://www.ab7e.com/weak_signal/mdd.html
However, the original argument that 20 watts is better than 10 watts
seems pretty silly to me since you can carry that flag all the way up to
power levels that create their
IMHO it's the need to shout louder than the other guys in a pile-up!
I've been DX and heard the roar!!
I know many a contest station that would and have spent $1000's
for an extra 3db. There must to a reason.
--
Dave G KK7SS
DN06ig Richland, WA
'59 Morris Minor 1000
'65 Sprite - in process
Aye, and there's the rub of the matter.
I just spent 20 minutes surfing the web looking for the definition of
QRP. Of the half dozen or so well known sites I visited, in the
US and abroad, the definition of QRP is 5 Watts CW and 10W SSB MAX. Not
20 if you got it, not 30 if running on an outboard
You must have been number one in line! Grats!
On 6/7/2011 9:37 AM, Jerry T. Dowell wrote:
I received shipping confirmation for my kit yesterday. Have patience!
Jerry AI6L
-Original Message-
From: Jim Brown [mailto:j...@audiosystemsgroup.com]
Sent: Monday, June 06, 2011 10:41 AM
I was told that I was #40 in line and I ordered two hours after it became
available on line.
Sent from my IPhone
On Jun 7, 2011, at 12:36 PM, Mike Fatchett W0MU w...@w0mu.com wrote:
You must have been number one in line! Grats!
On 6/7/2011 9:37 AM, Jerry T. Dowell wrote:
I received
Excellent point about seeing 3 times more stars with a gain of 1 magnitude
(although 1 magnitude is 2.5 times brighter, so a little more than 3 dB).
Also an excellent point about 1 dB yielding meaningful results in contest
score even if no difference is discernible in an individual contact. I
In the interest of minimizing list overhead and noise, let's end this
and related threads for now. This topic, like pro/con CW requirements
etc., reoccur endlessly on most discussion groups.
73, Eric
Elecraft List moderator
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Let's end the power/QRP discussion.
73, Eric
List moderator
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I've seen this kind of calculation before, and for some events, like
Field Day, it's clear that QRP can compete on scores quite
effectively. But that's using CW, and probably also PSK31. Dave's
numbers suggest that it might also be different for North American
contacts (for those of us within
Interesting analysis Dave. Assuming everything is logarithmic, a 33%
increase in contacts for a 13 db power increase implies 7% more contacts
for 3 dB more power:
10^[(3/13) * log(1.33)] = 1.07
And 100% more contacts for a 25 dB power increase implies 8.7% per 3 dB:
10^[(3/25) * log (2)] =
Well when I was in to EME on 2m I was hunting for
every .1 dB I could find.
/Jim SM2EKM
--
On 2011-06-07 16:42, Rose wrote:
There's a saying among VHF / UHF'ers in reference
to coax and connector losses that every .5db counts.
73! Ken - K0PP
I have just updated my website www.w3fpr.com article dealing with K2
Dial Calibration with the procedure provided by EA3ADV. This added
information is an adaptation to the N6KR method for setting the 4 MHz
reference, but details the use of RWM at 9996.00 kHz instead of 10 or 15
MHz WWV.
If
On 6/7/2011 6:14 AM, Pete Smith wrote:
It is pretty widely accepted in contesting that an improvement in
*either* receive or transmit capability of 1 dB will yield a useful
increase in the number of QSOs over a 48-hour contest, even if it has an
indiscernible effect on 99.5 percent of your
Jim,
It was possible to hear whistlers from storm centers long before you
could hear the thunder.
I doubt the whistlers you heard was from a storm that was close enough to
hear the thunder:
Very low frequency (VLF) radio waves shoot past the ionosphere and into the
next region of space, the
On 6/7/2011 9:06 AM, Brian - N5BCN wrote:
For UNSHIELDED twisted pair CAT5:
The K2 instructions use Pin 5 for the signal return lines. Using K9YC's
method, would I connect the return lines to the DB9 chassis, and then bond
Pin 5 (or Pin 1, or both) to the chassis also?
Do not use pin 5 for
These threads were closed earlier this morning. Please take the
discussion off-list.
73,
Eric
List moderator (Really! )
On 6/7/2011 11:26 AM, Jim Brown wrote:
On 6/7/2011 6:14 AM, Pete Smith wrote:
It is pretty widely accepted in contesting that an improvement in
*either* receive or
Jim,
I could not assure anyone that the Signal Ground (pin 5) is connected to
the shell of the DB9 in each and every computer or USB to RS-232
adapter. In fact I am holding an adapter right now that has no
continuity between pin 5 and the shell. That adapter will not work with
your
Jim,
I could not assure anyone that the Signal Ground (pin 5) is connected to
the shell of the DB9 in each and every computer or USB to RS-232
adapter. In fact I am holding an adapter right now that has no
continuity between pin 5 and the shell. That adapter will not work with
your
This is a timing problem in the communications, and will be fixed in the next
firmware release.
Jack Brindle, W6FB
Elecraft Engineering
On Jun 7, 2011, at 10:05 AM, John K3TN wrote:
If I hit the Oper/Stby buttons on the KPA500, the K3 displays a message and
selects the proper power drive
At SeaPac I had a few folks ask about controlling their PW1 from the K3. As
you know the K3 uses BCD data that is compatible with the Yaesu Quadra. So
I did some research today and found this nifty program call DDUtil.
I set the connection port to one of the LP-Bridge virtual ports and they
Sorry for the bandwidth
73,
Don W3FPR
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On 6/7/2011 12:13 PM, Don Wilhelm wrote:
Jim,
I could not assure anyone that the Signal Ground (pin 5) is connected
to the shell of the DB9 in each and every computer or USB to RS-232
adapter. In fact I am holding an adapter right now that has no
continuity between pin 5 and the shell.
I ordered about 2 hours after the window opened online also. No tracking
number was given with my confirmation, and my debit card has not been
billed, so perhaps the fat lady has not sung yet!
Jerry AI6L
Bill Hammond wham727 at aol.com
Tue Jun 7 13:54:19 EDT 2011
I was told that I was #40 in
K3 Hi Cut Low Cut granularity bug?
Lately I've been running a number of digital modes (JT65A, PSK31 RTTY) on the
HF bands. The K3's APF and dual PB filters really help to copy weak RTTY
signals, especially when there is QRM. When using the JT65A mode, signals even
weaker than -20 dB can be
I do not doubt about Jim's advice, but I sense that only a few are
willing to replace those computers or USB to serial adapters that are
classified by Jim's definition of bad equipment with good alternatives
(BTW, I agree with Jim on the bad equipment. Many DO need a signal
return
Hi all,
First off, i cant say enough good stuff about the k3 kit i recently bought and
built. Thank you Elecraft!
I am interested in remoting my k3 but am hung up somewhat on the requirement to
stop transmission if the radio is keyed for 3 minutes straight. I've dug
through the config
Just found out that my kit has not shipped. False alarm. I added an item to
the order and was sent a copy of the revised invoice, which showed a
shipping date of yesterday. Indeed, no kits have shipped yet. Sorry for
raising false hopes!
Jerry AI6L
Wow...I can't believe the numbers of responses I received with so many
really great suggestion!
What a GREAT group!
Thanks to everyone who replied!!
de Doug KR2Q
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If/When a 144 Transverter is in the design stage could you look into giving
it a BroadBand receive range? On the upper end I would like to see it go to
the National Weather Service at 165.xxx mhz, and on the lower end I would
like to get to the NOAA LEO sat's at 137.xxx (Wide Band FM if you
On 6/7/2011 2:30 PM, Don Wilhelm wrote:
sense that only a few are
willing to replace those computers or USB to serial adapters that are
classified by Jim's definition of bad equipment with good alternatives
(BTW, I agree with Jim on the bad equipment. Many DO need a signal
return
Having purchased amateur radio stuff from 20 or so different suppliers,
I am surprised to have to report that, after a recent order, Elecraft
has become only the second with which I am not completely satisfied (the
first being Andrews Communications in Sydney.) It appears the legendary
Elecraft
Paul,
The buck stops with myself and Eric. If you have a complaint about our
customer service, please contact us off-line and we'll deal with it
immediately. I can assure you that our CS department's response time
and commitment to solving problems has not wavered.
Example: I was doing a
Hi Ian,
Saw your sale on ebay.
Will you allow for pick up in Pleasanton so this doesn't need to ship?
Thank you.
Saraj
KU6F
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K3-100-Loaded-for-sale-tp6443172p6451601.html
Sent from the Elecraft mailing list archive at
Paul,
These guys own, build, use and test everything. That is one of the very few
signs of the best, successful companies in the US or anywhere. There are
few other vendors where find that commitment! I have been a customer since
1999 or thereabouts and I know what I am speaking as I deal with
I wonder if some people are looking at the DB plastic housing and not
realizing there's a metal shell around the pins/sockets.
In many cables these are left floating, sigh!
Ron AC7AC
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Also, when the SHIFT granularity (CONFIG:PB CTL) is changed from 50Hz
to 10Hz, the Hi Cut and Low Cut controls do not work at all! Is
this a BUG ora FEATURE? I'm presently using K3 firmware update MCU
4.36 .
Feature ... as documented every since the 10 Hz steps for shift/width
was first
So I did some research today and found this nifty program call DDUtil.
In spite of extensive research, I have yet to see DDUTIL working with
any rig other than Flex/PowerDSR. There was certainly no support for
using any transceiver/protocol other than the Flex/PowerDSR when I last
reviewed
Paul,
Talk to Wayne or Eric direct. I am using a lot of Icom gears and a demanding
customer as well. I have no complaint about their services so far.
I trust they will solve your problems. 73 Johnny VR2XMC
Sent from my iPhone 4
Paul Saville elecr...@zl3in.net 於 2011年6月8日 上午6:26 寫道：
Now that you all understand the situation between Jim and I, you have
to make some choices.
Do you throw away the bad equipment and get good? or do you try to make
the best of what you have?
Doing as Jim has suggested will reduce common mode (RF feedback)
problems, but in some cases will not
I was just thinking that might be a source of confusion. The supply houses I've
bought components from call the plastic cover the shell.
73,
Mike NF4L
On 6/7/2011 7:37 PM, Ron D'Eau Claire wrote:
I wonder if some people are looking at the DB plastic housing and not
realizing there's a metal
I have the following K2 modules available for sale:
KNB2 $40 shipped
KSB2 $95 shipped
KAT2 $140 shipped
All are completely assembled, tested, working ready to install including
documentation
Please reply off list
John
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Seems to me there some on this reflector that do not know the difference
between doing business with a Company and a Corporation. The guys at Elecraft
know that success is a journey not a destination. Try to do the best
always..you bet they do. Go visit them at their facility you see it first
As I said this was not tested since I do not have a PW1. But here is what I
did:
In LP Bridge (I imagine other virtual port programs would work as well) I
set a VCP (COM 13).
In the first port field in the DDUtil ports tab I entered COM 13. DDUtil
immediately picked up the K3 frequency
Joe,
I'm aware of the SHIFT granularity being settable from 50 Hz to 10 Hz. What I
was questioning is why, when this change is made, that the K3's HI CUT and LOW
CUT controls are disabled. After you set CONFIG:PB CTL to 10 Hz, when you press
either HI-CUT or LOW-CUT. nothing happens and you
It would appear that ZL3IN immediately deleted his email address after
he posted his rather petulant message. It's a dead address now.
Dave AB7E
On 6/7/2011 3:40 PM, Wayne Burdick wrote:
Paul,
The buck stops with myself and Eric. If you have a complaint about our
customer service,
If I have read correctly between the lines...
K3 software should be able to control the KX3 (same command structure).
My question: Has anybody ported the K3 software to Lunix (Ubuntu or SUSe)?
Marotte will not do as it uses the K2 protocols.
Dave G. KK7SS
DN06ijRichland, WA
What I was questioning is why, when this change is made, that the
K3's HI CUT and LOW CUT controls are disabled.
You will need to ask Wayne the reason but I suspect it is because the
Hi/Lo Cut don't match the shift/width steps when PB CTL=10 Hz.
Is this an undocumented feature?
No, it's
Providing HI CUT and LO CUT when SHIFT is configured for 10 Hz
increments would require a substantial rewrite to the K3 firmware. If
you'd like to use LO and HI CUT, for now you'll need to use 50-Hz steps.
73,
Wayne
N6KR
On Jun 7, 2011, at 6:51 PM, Rich - K1HTV wrote:
Joe,
I'm aware of
It's not a bug, it's a documented limitation.
Actually, it can be a feature: if it's set to 10 Hz and you tap one of the
knobs, it
displays the shift or the width without changing the control's function!
On 6/7/2011 6:51 PM, Rich - K1HTV wrote:
Joe,
I'm aware of the SHIFT granularity
Hi all,
I will be moving shortly and have to trim down my radio gear..
For sale is my KX1 in a Pelican 1060 case, includes:
KX1 With KXAT1 (Tuner, Internal), KXB30/80 (30/80m + wide band rcv), KXPD1
Paddle, CW Spot Indicator (N0SS). Two KX1 Nifty Quick-Reference Guides
Note: 30/80 module CW
Thanks to Don and Jim for their input on building a RFI resistant control
cable.
I've been informed by another poster that it's recommended to use stranded
CAT5 or 6 verses solid wire. The poster believes stranded wire would be
more resistant to flexing, plugging, unplugging, etc. than solid
When I was doing that kind of work the premises wiring was done with
solid but all the jumpers and anything that was plugged and unplugged
regularly was stranded. The solid was more prone to breaking at the
plug than the stranded was.
Our practice was to have the return of a circuit paired
George,
A VHF receiver with a broad front-end opens the door to inter-mod from Paging
transmitters and other local VHF services. I would rather have a ham-band only
unit and then add an inexpensive portable scanner if you need the additional
frequency coverage.
Just my opinion...
73,
Brian,
Treat the drain wire the same as the shield. It is just an extension of
the shield.
73,
Don W3FPR
On 6/7/2011 11:31 PM, Brian - N5BCN wrote:
Thanks to Don and Jim for their input on building a RFI resistant control
cable.
I've been informed by another poster that it's recommended
That appears to be so - my private email to him bounced. As a result,
I move him to my personal troll category.
73,
Don W3FPR
On 6/7/2011 9:52 PM, David Gilbert wrote:
It would appear that ZL3IN immediately deleted his email address after
he posted his rather petulant message. It's a
Hello Don
Thanks for the replay and all the useful info’s. It was quite easy to find
another counter (don’t know how calibrated) and now the difference is around
40Hz which is a great improvement from 300Hz.
Anyway I will try to use the RWM station signal also. Thank you everyone for
your
I don't see this as a limitation because I only use HI CUT and LO CUT in SSB
where 50 Hz steps is just fine. For CW and RTTY, the 10 Hz steps of SHIFT
and WIDTH are great.
Ed - W0YK
N6KR wrote:
Providing HI CUT and LO CUT when SHIFT is configured for 10
Hz increments would require a
Hmmm, his QRZ details may be enlightening...:-)
73's
Gary - now back to the DX
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Elecraft Equipment
K3 #679, KPA-500 #018
Living the dream!!!
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