You can connect the separate receiving antenna to the K3 internal 144 MHz
xverter by using the "P3 AUX 144 MHz IN" 3 pin connector.
use pin 2 (RF) and pin 3 (ground). This by-passes the K144XV input and diode
TX/RX switching circuitry. Thanks Elecraft for this option,
It's not that easy with rigs
K144XV uses it own dedicated ant input (ANT3), so not sharable with HF bands.
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My example assumes a worst case of 0 dB return loss at all harmonic
frequencies (i.e., the harmonic energy is all reflected). Any radiation
or other loss mechanism at the harmonic frequencies will just decrease
their reflected power and lessen their contribution to the total
broadband reflected
Serial 2148 of KX3 arrived by UPS today. Unboxed (just outer box) and already
took errata sheet to update assembly manual. But, still have to do inventory.
I am curious on whether I got the battery charger and real time clock. I had
heard they were back ordered. It is listed on my order she
WOW
Bob K3DJC
On Wed, 10 Oct 2012 20:32:58 -0400 Don Wilhelm
writes:
> Randy,
>
> What you say is true only if working into a load that is not
> frequency
> selective - like a dummy load.
> If working into an antenna, that will be frequency selective and any
>
> harmonics will increase
Randy,
What you say is true only if working into a load that is not frequency
selective - like a dummy load.
If working into an antenna, that will be frequency selective and any
harmonics will increase the SWR indication.
73,
Don W3FPR
On 10/10/2012 8:17 PM, Randy Farmer wrote:
> It's pretty u
Hi Dominic -
Sounds like you're having a lot of fun out there in paradise. Good
dx too. My KX3 is about a month away, otherwise I'd really
have enjoyed a KX3 to KX3, island to island contact.
Have fun and take care,
73
John
VK7JB
_
It's pretty unlikely you'd see harmonic content on any kind of broadband
power sensor like a SWR meter. Even if the transmitter was really bad
and had harmonic levels only 40 dB down, this would mean for 100 Watts
output you would be getting 10 mW in harmonic energy, which wouldn't
wiggle anybo
The DX Doubler has been sold.
Jim Spaulding W0UO
w...@arrl.net
817 448 8024 (home)
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Mike,
I have the MH3 on my KX3. The reports I have gotten are all
positive. I haven't done a thing with the TX equalizer, but I did crank
up the compressor a bit. With 10 watts PEP, I can get across Europe.
73,
Barry
K3NDM
On 10/10/2012 12:25 PM, Mike Mardis wrote:
> I'm looking for any us
I use an Alpha 87A without any issues with my K3's if that helps any. You
could call RF Concepts and ask about any known issues with that combo if
unanswered here.
73,
Fred/N0AZZ
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Beh
In my opinion, antenna switching should either fully automatic or fully
manual.
I've had both, plus a mix. I've never had a problem when it fully one way
or the other.
But for various reasons as stated in Joe's, it created problems, popped
diodes, what have you. The K3/KAT500/KPA500 can work eith
*Howdy, Folks.*
*
*
*Thanks for correcting the error of ways. The "MON" adjustment did the
trick. *
*
*
*Thanks for all that replied. I appreciate each and every one of the
responses.*
*
*
*Best 73!*
*Jim*
*WA4NTM*
*
*
On Wed, Oct 10, 2012 at 3:14 PM, david Moes wrote:
> Hi Jim
>
> I dont
> Not if the operator isn't stupid.
... or tired, not thinking clearly, in a hurry to work a "new one",
changing the SO2R radio while concentrating on the run rig, or in a
hurry to work a multiplier on a new band, etc. It only takes one
time to forget to "tune" the KAT500 - or have something
Hi all,
Ref:
http://www.ae5x.com/blog/2012/10/10/m1ktakh8-qrp-with-kx3/
My KX3 Serial number is 1082
I'm qrv for one more night 11th October 08:00-18:00 UTC (starting 10 ish hours
from right now) from beach on north shore of American Samoa with a perfect NE
orientation, 800m cliff <200m behind
On 10/10/2012 12:15 PM, Joe Subich, W4TV wrote:
> This only moves the hot switching from the KAT500 to the amplifier.
Not if the operator isn't stupid. A smart operator will do as I have
described -- a short burst of RF to let the KAT determine operating
frequency and recall settings. And with
I am selling my beautiful K2/10. Has the following installed: KSB2, KNB2,
KAF2, KAT2. Working perfectly with no issues and complete with original
Elecraft construction/operation manual. Currently wired for Kenwood
compatible microphone. I was using a Kenwood MC43s with it, but need to hold
on to th
Some here may be interested in how QRP can sound when coupled with an efficient
antenna.
Here's an audio file of how Dom sounded in SE TX as he operated as KH8/M1KTA
from American Samoa with his KX3:
http://www.ae5x.com/blog/2012/10/10/m1ktakh8-qrp-with-kx3/
John AE5X
_
*Ollie,
Correct.
I might add the advantage of using AUXBUS on the KAT500 (for me at least)
is on receive, changing bands to 'check' another band, there is no need to
Tx a DAH to effect a change from say ANT1 to ANT2 if that is the antenna
assigned to that band.
Without AUXBUS connected one has t
Hi Jim
I dont believe that there is a menu item for separate level control for
the headphones relative to the speaker volume.
to adjust the transmit monitor level for sending either CW or phone
hold in the power control knob for half a second and it will now adjust
monitor level tap it to
Anyone using a 77SX or 77DX with their K3 & know of any issues I need
to address?
Thanks,
Gary
KA1J
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> This is prevented by the requirement that PTT be "looped through" the
> KAT500. When the KAT500 is tuning (or switching), PTT to the amp is
> interrupted.
This only moves the hot switching from the KAT500 to the amplifier.
Whilst the KPA500 can handle hot switching due to its PIN diode T/R
I use a Band Decoder Card from Unified Microsystems to drive my antenna
relais.
http://www.unifiedmicro.com/decoder.html
73 de Jan SM5FQQ
-
Elecraft K3 #2054, Butternut HF9V
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If you hold the Rate/kHz button for a few seconds, it will lock the VFO.
73, Matt VK2ACL
On 11/10/2012, at 3:23 AM, Mike Mardis wrote:
> Among a few other small "would like to see" items. How about a VFO lock. I
> have, what my wife describes as, big nubs. I tend to bump the VFO often. A
> m
Folks, do -not- criticize the appropriateness of other postings on the
list. Criticism of this type is specifically outside of the list
guidelines and only adds to list clutter and consternation.
Also, please keep ALL postings friendly as if you were talking face to
face with close friends in y
There are several causes for varying SWR readings with power level:
1) Poor diode linearity -- diodes are less sensitive at low levels, and
reflected power
may be very low at QRP levels. This effect shows as a low indicated SWR at low
power
levels, which then becomes more accurate past a given
Hi Mike,
Hold the KHZ switch for about 3 seconds. The VFO A lock symbol will
come on.
For more details see page 11 of the KX3 Owner's Manual.
73,
Wayne
N6KR
On Oct 10, 2012, at 9:23 AM, Mike Mardis wrote:
> Among a few other small "would like to see" items. How about a VFO
> lock. I have,
VFO LOCK is already implemented. Just hold down the RATE button for
about 5 seconds and you'll hear the beep and see the padlock icon
appear on the display. Moving the VFO knob then has no effect. To
remove VFO LOCK, just tap the RATE button.
Hope this helps.
73,
BILL GERTH, W4RK
Jefferso
I have for sale a DX Doubler with three cables, one K-3 homebrew, one K-3
modified from ICOM, and one ICOM. $135 including shipping by priority mail.
Jim Spaulding W0UO
w...@arrl.net
817 448 8024 (home)
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I'm looking for any user experienced hand mic's for my KX3. Suggestions?
Mike Mardis
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Among a few other small "would like to see" items. How about a VFO lock. I
have, what my wife describes as, big nubs. I tend to bump the VFO often. A
minor fix has been tightening the VFO A friction. But a lock would be great
while filtering out some QSO's.
Mike Mardis
On 10/10/2012 7:59 AM, Joe Subich, W4TV wrote:
> Most relays have significantly higher "carry" ratings than "switch"
> ratings and will not survive repeated switching at full power.
> While the KAT500 may be fast enough to switch during the "ramp up"
> time at the start of a transmission, that is s
Just a few questions
1. Can the calibration be done in any order?
2. I am doing Reference frequency calibration ( using my XG2), transmit bias
calibration, transmit gain (using Elecraft utility) not doing KXFL3 as it was
done at factory. Is there any other tests or calibration that has to be done
> A band data connection allows the KAT500 to switch when you change
> bands on the K3, before you transmit. That saves a few hundred msec.
> So far, I've not seen the need for it.
A band data connection allows the KAT500 to switch *before* RF is
applied rather than hot switching *after* RF begin
On 10/10/2012 5:53 AM, Jim Miller wrote:
> I notice the KAT500 has three antenna ports. Is it programmable to
> auto-select the port from band data?
Yes. And it doesn't even NEED band data -- like the KPA500, it
auto-detects the transmiitted frequency, recalls settings for that
frequency, and sw
As per information given by Elecraft and the field testers: YES.
73, Olli - DH8BQA
- Original Message -
From: "Jim Miller"
To: "Elecraft Reflector"
Sent: Wednesday, October 10, 2012 2:53 PM
Subject: [Elecraft] KAT500 Antenna Selection?
>I notice the KAT500 has three antenna ports. I
I notice the KAT500 has three antenna ports. Is it programmable to
auto-select the port from band data?
73
jim ab3cv
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P
I like the Six Pack also and use one at K0PP's for SO2R and one at home.
At home I added a W9XT Band Decoder and High Side Driver to
automatically switch antennas on one of the ports. Haven't gotten around
to adding the second side. Incidentally the band decoder is optoisolated
and doesn't load the
Some of this effect hqs to do with the reflected power diode.
Depening upon the sense circuity, the reflected power diode may not see
enough voltaqe to be fully conducting. Thus it reads less current in
the reflected position and hence lower SWR that at higher powers.
Also the type of diode use
Good morning Don, Thanks for the reply and the only reason alarm bells went
off regarding these washers there were only 2 shipped and then seemed a
little oversized and unique. So that made me wonder if they were to go
somewhere on the KX3 build or not. It was not like there was 6 of them and 2
lef
On 10 Oct 2012 at 4:14, Fred Smith wrote:
> I had also looked for quite some time and finally found one that fit very
> well in my station and 2 radios a SO2R. It is the Array Solutions Six Pack
> it has been working very well for over 2 months and a lot of features so no
> foul ups. But the nic
Jim,
I have an Ameritron RCS-12 conntroller driving an RCS-10L switch, and
AFAICT, it meets all your requirements. I'm very pleased with it.
73, Mike NF4L
On 10/9/12 9:36 PM, Jim Miller wrote:
> I'm adding a KPA500 and KAT500 to my station equipment. The only coax to
> the shack will be a run o
My theory in these cases is that it's nothing to do with bad antenna
connections, but more due to the rig putting out a higher harmonic content at
higher power levels. The SWR meter sees a bad SWR at the harmonic frequency so
the reading is slightly worse.
73
Tom G3OLB
N3OI wrote:
<*One observ
I had also looked for quite some time and finally found one that fit very
well in my station and 2 radios a SO2R. It is the Array Solutions Six Pack
it has been working very well for over 2 months and a lot of features so no
foul ups. But the nice part is that it is so simple to install and use.
7
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