Is it possible to use vfo B to set both the tx and rx freq? I've got an
idea about
using the IF output for mult. searching, which would require using VFO B to
set tx/rx using the sub rx.Alternately can I get to the IF output from
the SUB RX?
Mark n2qt
the K3 is also good in that you can select the power output to be band
specific.
(under CONFIG). So if your amp needs 50w on 15 and 35w on 80, set it once
and don't worry about it anymore.
Mark n2qt
- Original Message -
From: Jim Brown j...@audiosystemsgroup.com
To: Elecraft
when I selected 3 or more handbooks with the USPO Book rate shipping the
shipping cost went to $999.00!
Mark n2qt
- Original Message -
From: Paul Kirley pkir...@fuse.net
To: elecraft@mailman.qth.net
Sent: Wednesday, November 25, 2009 4:00 PM
Subject: Re: [Elecraft] Special offer
I notice that there is a slight power output variation between the two FSK
tones (as seen on an external meter, there isn't enough resolution on the
K3's meter to see it). Is this a result of filter ripple or is something
else
at work here? (since not AFSK not EQ or sound card settings).
Mark
At one time there was some talk (assuming the internal isolation was high
enough)
to allow the subrx to remain active, listening on it's own antenna, while
the K3
was in transmit.
Are there any new developments along this line?
Mark n2qt
This is the board you would have replaced in your K3 when upgrading to the
KAT3 antenna tuner. I'm looking for one to try something on, (not all or my
ideas work so don't want to sacrifice the one in the rig) so if you've got
one,
let me know what it would take to ship it to 24551.
Mark n2qt
during a contest.
Mark n2qt
NR4C wrote:
Now, one more. How much power can I safely use with FSK? I have made
several contacts so far at about 50 watts. Can I use more? there is a
RTTY contest this weekend, and I don't want to damage the radio, but
don't want to start off with a weak signal
reason to do things.
73,
Mark
- Original Message -
From: Guy Olinger K2AV
To: Mark n2qt
Cc: elecraft@mailman.qth.net
Sent: Thursday, September 23, 2010 4:03 PM
Subject: Re: [Elecraft] FSK power
The K3 has the best heat dissipation scheme I have ever seen in a 100W
I know this has been discussed before and the fix is on the list
but after 24 hours of watching the watt meter bounce on the two
fsk tones, is the solution getting closer?
Mark n2qt
(using 5 pole filters which I understand accentuates
(If there was a macro that would execute when
changing
from RUN to SP I could do it that way).
Mark n2qt
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yes I've got that in my TU macro in N1MM, but it seems I manage to tune RIT
and then wander off
to SP without logging someone just before.
WIth low power I seem to be giving up on running quite a bit!
Mark n2qt
-Original Message-
From: Guy Olinger K2AV
Sent: Monday, January 10, 2011 4
after the 62nd recommendation for this headset I have finally ordered one.
http://www.samash.com/p/Yamaha_CM500-Headphones-with-Microphone_-49969751
Mark n2qt
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nice write up on sound card microphones (like in the CM500) at
http://www.hobby-hour.com/electronics/computer_microphone.php
My CM500 just came today, haven't confirmed anything yet.
Mark n2qt
-Original Message-
From: Jim Brown
Sent: Thursday, January 13, 2011 1:37 PM
To: elecraft
(if any) occurrences but figured I'd
report this in case others
have seen it.
Mark n2qt
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a slow for my
application.
Mark n2qt
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times.
Mark n2qt
-Original Message-
From: Mark n2qt
Sent: Wednesday, April 25, 2012 5:05 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] txinh timing??
I've looked but can't find the spec on how long after after initiating TXINH
is the
K3 transmitter at zero power?
(I'm working
It's a little bit quicker, full power in about 7-8ms.
if anyone is interested in the pictures I took of the scope, email me
directly and I'll
send you a copy. (about 800k each)
Mark n2qt
-Original Message-
From: Igor Sokolov
Sent: Thursday, April 26, 2012 2:02 PM
To: Mark n2qt
of the neat digital storage scopes so I could just read
these numbers with
the markers instead of squinting at a picture).
Mark n2qt
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with isolation numbers like this perhaps there is hope for
duplex mode, with transmitting on one band with the
subrx enabled and listening on another??
Hopefully!
Mark n2qt
-Original Message-
From: Mark - G4AXX
Sent: Saturday, April 28, 2012 11:27 AM
To: elecraft@mailman.qth.net
of an electromechanical switch by
as much as 100 times. There are ways around this with the
use of zeners instead of just a diode.
Mark n2qt
-Original Message-
From: Don Wilhelm
Sent: Sunday, April 29, 2012 10:11 AM
To: Gregg Marco W6IZT
Cc: 'elecraft'
Subject: Re: [Elecraft] PR-6 issue when
with mine.
Mark n2qt
-Original Message-
From: Robby.VY2SS
Sent: Monday, May 21, 2012 7:39 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] RCS-12 or Station Master for K3?
I have been using the Elecraft KRC2 for remote switching for several years.
It drives a MicroHAM 10 port switch
enough to hold out hope.
Mark n2qt
-Original Message-
From: Wayne Burdick
Sent: Friday, October 16, 2009 10:32 AM
To: Bill W4ZV
Cc: elecraft@...
Subject: Re: [Elecraft] K3: SO2R-in-a-box
It may be possible to do full duplex with the sub receiver on a
different band and antenna from
are easy to get and
the supplies easy to
fix.
Mark n2qt
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else some time.
Mark n2qt
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Please help
Looking for comments on how well a KX3 does in a rtty contest.
I am thinking of using a kx3 in a SO2R setup at 100w with the hopefully
soon to arrive KPA100, but wondered how it stacks up. I'm currently
using K3's and FT1000 MKV. (that Sherwood report sure got me thinking).
Mark n2qt
aka
(and it looks like the
calibrate routine also
does this.)
Mark n2qt
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ground somewhere
in there.
Mark n2qt
-Original Message-
From: Mark n2qt
Sent: Saturday, September 22, 2012 1:44 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] K3 power output problems
On a new to me K3, I am having problems with power output below 15M. For
example
the power output
, which would
be pretty spectacular. I did confirm the ~100W output power on a W2
wattmeter.
So something is definitely up
Mark n2qt
-Original Message-
From: Dr John Farmer
Sent: Saturday, September 22, 2012 2:01 PM
To: Mark n2qt
Subject: Re: [Elecraft] K3 power output problems
Hi Mark
I'm hoping to use the rig in the upcoming CQWW, so if there anything amiss,
it's sure to show up then.
Mark n2qt
-Original Message-
From: Ian White GM3SEK
Sent: Sunday, September 23, 2012 4:54 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 power output problems
Don
. With rubber feet on the fan, and a screen to keep
wires and fingers out, it works really well for me.
Mark n2qt
-Original Message-
From: Lyle Johnson
Sent: Saturday, September 29, 2012 4:52 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 SHUTDOWN.
In the end
For another approach look at
http://www.pvrc.org/Newsletters/jun12.pdf
and in the files section of the Yahoo K3 user group.
This uses a small preamp from Clifton Labs to provide isolation and some
gain if
desired.
Mark n2qt
-Original Message-
From: Thomas Horsten
Sent: Saturday
In the optional enhancement section, for rx shift = 8
it indicates that FL1 will be flashing but then in the
next section says
Make sure FL3 is still selected
shouldn't this be FL1 since we are offset?
Mark n2qt
(brand new KX3, got it and built it yesterday so I could be confused
this be FL1 since we are offset?
Under future enhancements,
it would be GREAT if external FSK could be implemented, using the CW key input
perhaps???
Mark n2qt
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I am using it happily, but the tones seem inverted (as if the rig is
in USB instead of the standard LSB). Selecting ALT sideband
does nothing to change this, although the LCB icon does show up.
Please let me know if I'm the only one???
Mark n2qt
(Even inverted, it was fun getting
responding
to on/off frequency signals equally.
Wishes
Add FSK transmit (Elecraft says the I/O is wrong to allow this)
Allow other rx filtering selections
Fix the sideband selection in AFSK A
Mute the RX I/Q output on TX
SO not bad for a 2 pound trail ready radio!
Mark n2qt/we4m
an unsolicited shut
down on the same
rig. PA temperatures did make it into the low 50's sending QTCs.
When a fault occurs, to the point of shutting off output power, is the fault
display fleeting
enough that I could have missed it? (I was running SO2R and not watching
the affected
radio).
Mark n2qt/we4m
to MENU and
found the MIC BTN was on but not able to change since I was in CW mode.
Changed to SSB, put MIC BTN off and all was stable.
Mark n2qt
(working the KX3 and letting the K3 cool off after SS)
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the isolation between
the antennas,
but if the radio itself would handle this, I could use the sub rx to tune
the band for
other stations while I am transmitting.
Mark n2qt
(still hopefull)
Posted by: hb9ari hb9...@bluewin.ch asga732000
Date: Sat Jan 21, 2012 1:01 am ((PST))
Hi Mark,
I've asked
Any update on this? Would be interested in doing testing
if that's helpful.
Mark n2qt
-Original Message-
From: Wayne Burdick
Sent: Friday, October 16, 2009 10:32 AM
To: Bill W4ZV
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3: SO2R-in-a-box
It may be possible to do full
must be caused by transients in the tone to tone
switching (ie non zero crossing switching or the like)
Mark n2qt
-Original Message-
From: Ken K3IU
Sent: Wednesday, March 07, 2012 2:18 PM
To: Brian Alsop ; Elecraft Reflector
Subject: Re: [Elecraft] K3/KPA500
Hi Brian:
Just want
I'm also interested in this operation (although for a different
application). Here's the
email exchange so far, looks like maybe after the kx3 if we keep the
question alive.
Mark n2qt
copied messages below
From: Gary Surrency
Sent: Tuesday, February 07, 2012 12:46 PM
To: Mark n2qt
Subject
firmware to verify if
my memory is correct. Since the
160 contest is tonight, I'll just pull the TXinh and live on the edge.
Mark n2qt
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to transmit.
Adding the resistor makes everything ok again...
Mark n2qt
-Original Message-
From: Mark n2qt
Sent: Friday, January 25, 2013 5:23 PM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] K3 LONG delay in TX after TXINH removed
I have TXinh sent to my K3 to ensure it doesn't
, it looks
like it helps.
With the ever increasing popularity of rtty contesting, improvements like
this helps
us all.
Mark. N2QT/WE4M
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right.
Mark n2qt
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I've used a kx3 as the third radio in a so3r configuration. I was low power
but did not
see any additional issues with using a kx3 rather than a k3. You may find it
necessary
to use the 8 kHz offset to reduce the zero if bleed through if you don't have
enough
inter band isolation.
Mark
I have two K3s, SN in the 3XXX and 4XXX range. I notice that over time I can
see a leading
edge spike on first character of cw. If I redo TxGain calibration it goes
away. It seems like
I need to redo the TxGain cal about every year.
Is this what others see?
Mark. N2QT
more checking.
FW 4.81/2.83 and TX Gain Cal done recently.
Mark. N2QT
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, and play with it. While it doesn't have
real callsigns you can
quickly get the sense of how it operates.
If this gets picked up by the various contest logging programs, it is maybe a
way to make the
discussion of cr/lf moot.
Mark n2qt
Yes I'd found that. What I was hoping for is a readout in watts, with a
bargraph,
like that provided with the W2 or the remote app for the KPA500.
Mark. N2QT
On Jan 23, 2015, at 8:05 PM, Don Wilhelm w3...@embarqmail.com wrote:
Mark,
The OPERATE tab of the KAT500 Utility shows the VFWD
Is there an app to take the fwd/ref information from a KAT500 to display on a
computer
monitor?
Mark. N2QT
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one of these thing new would be price prohibitive, but one was found on
eBay (sans
power supply) for a 'good price'.
Mark. N2QT
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could hook things up and go.
Mark. N2QT
On Jul 7, 2015, at 11:50 AM, Tom tom...@videotron.ca wrote:
Hmm, that's interesting. Have you tried a powered USB hub? I would think that
should work.
73 Tom
va2fsq.com
Sent from BlueMail
On Jul 7, 2015, at 10:57 AM, Mark N2QT via Elecraft
functionality.
The unit is sold by Best Buy under the Unbranded name.
Anyone have luck powering such a tablet without losing the USB data capability?
Mark. N2QT
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with the latest PC upgrade).
Mark. N2QT
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.
A great way to improve the performance of 12v 100w rigs.
Mark. N2QT
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This came up as a possibility a couple years ago. I was wondering with the k3s
new RF
board and synthesizers if there is a chance for full duplex operation with the
2nd RX.
Would make for an interesting possibility of single radio "SO2R" operation....
o write software (not me.. .I just use it).
Is there any chance that we could have a 'compact' version of the W2
software display just like we have for the KPA500?
Just a thought.
Mike va3mw
Mark. N2QT
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Is it normal for the 6M output to be about 10 watts less than indicated (i.e.
90w for 100w
setting). If I do the 50w wattmeter cal on 20 M all bands but 6 are pretty
much right on.
Conversely if I cal on 6 then all the lower bands are (not surprisingly) 10
watts high.
Mark. N2QT
Just to confirm my reading the schematic, preamp 2 is not available for the sub
RX
when it is using the Aux input.
I am trying to compare two 6m antennas using the main and sub RX on AUX.
Mark. N2QT
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Thanks Don,
I was especially worried about the very gradual drop of voltage as the
unpowered
power supply’s caps discharge. I guess in the long run I’ll need to come up
with a way
to command the rig off. The computer will have a commanded power off via the
UPS.
Mark. N2QT
> On May
Is there much danger of issues caused by just turning off its power supply
rather than
doing a commanded off for a K3?
I’m looking at remotely operating an unattended k3.
Mark. N2QT
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Thanks Bill,
I’d not thought of using the Elecraft Utility. That’ll work for me
Mark. N2QT
> On May 12, 2021, at 8:15 PM, Bill Rogers W3UL wrote:
>
> I use two techniques to turn off my remote setup.
>
> 1 - I run Win4K3 on the remote computer to control some of
on 40M (which has an
external
antenna tuner) and 20M which has a resonant antenna.
Suggestions?
Mark. N2QT
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