Does anybody use an external ALC voltage shifter with the K3 to provide
negative voltage for an amplifier(and not do the internal modification)? If
so, where can I find information on how to build/buy one?
73, Chris-OE5CSP
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IF I remember correctly, when you choose line out from the mail menu,
the MON pot adjusts the level. It then remembers it.
73 de M0XDF, K3 #174
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Hofstadter's Law: The time and effort required to complete a project are
always more than you expect, even when you take into account
Hofstadter's
Why the mountain Don?
Don Rasmussen wrote:
http://www.zerobeat.net/mediawiki/index.php/Procat_Cool_for_Windows
New features at the bottom. ;-)
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Hello,
a friend of mine found a strange problem with his new K3. His setup:
1.
PSK31 (DATA-A), LINE IN = 5. PWR OUT set to 120 W, measured PWR at
PWR-meter: 5 W.
2.
Then tap A/B. Switch to SSB. Measured PWR=30 W. After about 25-30 sek of
whistling into the microphone PWR out is 120 W.
3.
Per, OZ5ABO wrote:
Mode Switch:
It takes only a very light push to activate the up function. Now,
activating the down/ALT is a very different story as I have to
push/press *very* hard to activate this side of the switch.
This is definitely abnormal. Please contact k3support; they'll help you
Andreas,
thank you very much for the links. Now I got an idea how to build the
interface :)
George,
despite the links Andreas posted, I would be also interested in your
solution, just to get a different point of view.
73 de Roland, DC1RS
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What you describe would indicate a problem. The switches should all operate
with very little pressure and the knobs are all responsive and smooth
acting. I would check your front panel install and make sure that the left
side is installed correctly. In particular the mic and phone and encoder
Thanks Don!
I was planning to make the audio mod anyway. It might help to increase the
output level even a little bit.
The actual output level (or amplification) for some reason is well below the
standard for line outs. Elecraft should address this problem.
Otherwise, I think the K3 is a
Frank,
It looks as if your friend is trying to set the K3 up for PSK31 using DATA
A. If so, I believe he is approaching it the wrong way.
The procedure I would recommend (subject to any correction from the gurus at
Elecraft) is as follows:
1. Set the PWR control to approximately 50 watts. You
VK5ABQ shanewh at gmail.com
Why the mountain Don?
It's named K2 - like the Elecraft radio. ;-)
http://climbing.about.com/od/mountainclimbing/a/K2FastFacts.htm
Don Rasmussen wrote:
http://www.zerobeat.net/mediawiki/index.php/Procat_Cool_for_Windows
New features at the bottom. ;-)
Jim,
Thanks for the information on the mic you are using.
Greg
N3TU
Date: Sun, 14 Dec 2008 20:34:32 -0800
From: ml-user+39520-1102585...@n2.nabble.com
To: connectme...@hotmail.com
Subject: Re: [Elecraft] Microphone Upgrade
On Sun, 14 Dec 2008 18:23:39 -0800 (PST), -.-. --.-N3TU -.-.
I knew there was a reason for K3 - it goes a step beyond the K2 !
Lets nickname it Everest!
--
Cats know exactly how we feel. They don't give a damn…
but they know.
On 16 Dec 2008, at 18:27, Don Rasmussen wrote:
VK5ABQ shanewh at gmail.com
Why the mountain Don?
It's named K2 - like the
Here's a site that will show you K1 thro K8 and some KXs, some connection
with communications :-)
http://www.redphonebox.info/history.htm
David
G3UNA
VK5ABQ shanewh at gmail.com
Why the mountain Don?
It's named K2 - like the Elecraft radio. ;-)
In using my K3 for diversity reception, I use my G5RV antenna on the AUX
subreceiver input, and my SteppIR for the main (transmitting/receiving)
antenna. When I'm transmitting, does the K3 short the input to the
subreceiver AUX input, or otherwise protect the input from damage? I'm
using an
And the ST6 was a RTTY unit from Hal Devices. I just didn't know of the
Cajun links, no wonder they were
great to fiddle around with.
73,
Bob
K2TK
David Cutter wrote:
Here's a site that will show you K1 thro K8 and some KXs, some
connection with communications :-)
Dr. James C. Garland wrote:
In using my K3 for diversity reception, I use my G5RV antenna on the
AUX subreceiver input, and my SteppIR for the main
(transmitting/receiving) antenna. When I’m transmitting, does the K3
short the input to the subreceiver AUX input, or otherwise protect the
Wayne,
To carry this one step more, what about when I am running multiple K3's on
different bands at the same time? Do you recommend to use external receive
bandpass filters on the receive lines if I am using receive antennas on the
Receive Antenna and/or Aux input?
And also use transmit bandpass
Tony, N2TK wrote:
Wayne,
To carry this one step more, what about when I am running multiple
K3's on
different bands at the same time? Do you recommend to use external
receive
bandpass filters on the receive lines if I am using receive antennas
on the
Receive Antenna and/or Aux input?
And
As an add-on, we have used a pair of K3's at K8GP multi multi VHF station on
6m. Our 5 element and 7 element antennas were only several hundred feet apart
and we didn't hear the COR come on and we could actually copy stations 20 KHz
away from our transmitter running 1500w!!!
I'm sure this
Hi Wayne
At what approx. RF voltage level sent back into the rx from the
second antenna do we need to worry about additional protection like
external switching or shorting?
Also, what do I hear when the COR activates? What sound? Is this a reed relay?
I operate SO2R and occasionally need to
w...@comcast.net wrote:
As an add-on, we have used a pair of K3's at K8GP multi multi VHF
station on 6m. Our 5 element and 7 element antennas were only several
hundred feet apart and we didn't hear the COR come on and we could
actually copy stations 20 KHz away from our transmitter running
Jerry Flanders wrote:
At what approx. RF voltage level sent back into the rx from the second
antenna do we need to worry about additional protection like external
switching or shorting?
The short answer is: the voltage resulting from input power high enough
to trigger the COR (probably 0.5
I got chance to try the fix recommended by Aptos today
As there is virually no lead length between the end of the windings and the
connections to the pcb, it was a challenge to move the end turns, but by
spreading the turns between the end turns the err vco 00374 no longer
happens
Dave
Wayne,
What about Snow static on the main antenna and danger to the rcv? It is
fairly high voltage and I assume not much current? I had a bunch during
the 10 meter contest. Those of us in the north country hear it snapping
in the antenna switch quite regularly if not grounded during the
Ed Gray W0SD wrote:
What about Snow static on the main antenna and danger to the rcv? It
is fairly high voltage and I assume not much current? I had a bunch
during the 10 meter contest. Those of us in the north country hear it
snapping in the antenna switch quite regularly if not grounded
Is something wrong with my K3? Can the AF stage upgrade help me with
that? According to the K3 project, what is the nominal line level
output of the K3?
On my K3, with the AFMODKT changes in place on the KIO3 board, and
driving an open circuit, I get up to 600 mV p-p of audio output if LINE
Has anyone had a problem with RF getting into the paddle input of the MKII ?
Problem is reduced somewhat by careful adjustment of the router `Winkey`
page, but essentially series of Ds likey to turn into Ms and Gs (!); fine
with K3 on test so has to be RF based. MKII keys clean with no problems
AAA of course. Thanks Don.
I think the jury is still out as to whether the K3 deserves the praise
Everest. Maybe but we've all got our K3 feature or modification wish list.
-
Shane
K3/10: S/N 2127, KBPF3, KFL3B-FM, KFL3A-6K, KFL3A-2.8K, KFL3A-400, KTCXO3-1
KXV3.
--
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Well, K1 is in some parts of the world know as a martial arts fighting
sport: http://en.wikipedia.org/wiki/K-1 .
Especially in Japan it is hugely popular. K1 is a sport not for the faint
hearted.
The K2 is very well know as the second largest mountain in the world. To
climb the K2 is not for the
Hello,
It was a very historic day on Sunday December 14, 2008. Who would ever
think
way back on March 4, 2000 that I would still be going out once a month on
the Appalachian Trail (AT) and setting up an antenna just to make a couple
of contact with a QRP radio. Yes, I have been doing this once
On Tue, 16 Dec 2008 13:16:28 -0800, Lyle Johnson wrote:
On my K3, with the AFMODKT changes in place on the KIO3 board, and
driving an open circuit, I get up to 600 mV p-p of audio output if LINE
OUT is set to 100 while listening to a moderately strong signal with
AGC
activated. This of
Jim,
It will replace a IC756Pro3 at the main position. I have a
MicroKeyer MK2 which outputs CI-V frequency information which
is needed by both the SteppIR and the IC-PW1 amp.
Has anyone integrated a combination like this? And are there
tips you can pass on to speed up the
Well, seeing how they use high quality headphones and boom
microphones, they are clearly contesters. Works for me.
de Doug KR2Q
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Hello,
I have been beating my head trying to figure out why the MDS on my K3
(serial 2002) was so poor. I've been using the receiver sensitivity test
plan from the Elecraft XG2 RECEIVER TEST OSCILLATOR, and getting a (preamp
ON) MDS of -123dBm.
Tonight I decided to run this to ground to see
Consumer line level ins and outs are designed to handle levels
corresonding to a sine wave of at least 1V. 1.4v peak, 2.8v
p-p. 600mV p-p is 13 dB below that. So yes, I agree with the
guy who says that the Line Out level is pretty low. Sorta like
a hot mic level. :)
Unfortunately,
FWIW, standard Line Out is 1Vp-p at 600 ohms line impedance.
matt
On Wed, 17 Dec 2008 01:01:51 -0500, you wrote:
Consumer line level ins and outs are designed to handle levels
corresonding to a sine wave of at least 1V. 1.4v peak, 2.8v
p-p. 600mV p-p is 13 dB below that. So yes, I agree
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