Skip,
If you need additional trials for tuning with the KAT2, set the ATU menu
to ALT.
73,
Don W3FPR
On 7/10/2018 9:53 PM, Fred Jensen wrote:
Does the K2 ATU maybe find a better match if you to TUNE again quickly,
or is the first match the bestest it can do?
Does the K2 ATU maybe find a better match if you to TUNE again quickly,
or is the first match the bestest it can do?
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
__
Elecraft mailing list
Home:
Don,
The fan antenna was a lashup in the attic in hopes of having another
antenna, hopefully to use with the K2 upstairs in the office. If it
worked out, great; if not, no big deal. The attic isn't easy to get into
(no pull-down), and not a lot of room to stumble around up there.
The final
On 04/11/2011 04:11 PM, Wayne Conrad wrote:
My radio (K2 with the internal ATU) hasn't shipped yet, but that
shouldn't stop me from putting up an antenna, right? If only I knew
what to put up, that is. That's where I'm asking for help.
(snip)
Thank you to everyone who replied, both
FWIW, see my fan antenna at
http://wilcoxengineering.com/projects/amateur-projects/39-fan-dipole
A bright idea that didn't work out so well!
Cheers, Alan
Alan D. Wilcox, W3DVX (K2-5373, K3-40)
570-321-1516
http://WilcoxEngineering.com
http://eBookEditor.net
On 4/15/2011 3:15 PM, Alan D. Wilcox wrote:
FWIW, see my fan antenna at
http://wilcoxengineering.com/projects/amateur-projects/39-fan-dipole
A bright idea that didn't work out so well!
If I had a dollar for every Gee, it seemed like a good idea at the
time situation I've found myself in, I'd
Alan,
Sorry to hear about your lack of success with the fan dipoles. I have
three of them - one for 80 and 40, another for 30, 17 and 12m, and yet
another for 20, 15, and 10. They work very well.
My secrets - space the wires for each band away from one another - my
80 and 40 antennas are
so often
found on 75.
Ron AC7AC
*Wire fed at the center but not necessarily a dipole - i.e. 1/2 wavelength
long - on any band.
-Original Message-
Subject: Re: [Elecraft] K2 + ATU + Loop antenna in the attic
Alan,
Sorry to hear about your lack of success with the fan dipoles. I
but not necessarily a dipole - i.e. 1/2 wavelength
long - on any band.
-Original Message-
Subject: Re: [Elecraft] K2 + ATU + Loop antenna in the attic
Alan,
Sorry to hear about your lack of success with the fan dipoles. I have
three of them - one for 80 and 40, another for 30, 17
I have had two fan dipole in use maybe 15-20 years ago, before the time of
widespread use of auto tuners. One was a commercial model, with the various
lengths of wire on each side of the center insulator spaced about an inch
apart (spacers were used). I did not have so much success with it. The
That's a sign the dipole is significantly unbalanced or you have common mode
signals getting into the receiver. The balun is supposed to take care of the
common mode suppression, but that often depends upon the impedance it sees,
which varies widely in a tuned feeder system.
A truly balanced
On Fri, Apr 15, 2011 at 7:16 PM, Ron D'Eau Claire r...@cobi.biz wrote:
the efficiency, ease and simplicity of a doublet*
fed with open wire line...
Ron is so right. At the risk of re-re-repeating myself, whether or not an
antenna is resonant, or matches coax, has nothing to do with its
Wayne,
If you have no choice and have to use an antenna in the attic placed close
to the rafters, I would suggest that you do use iinsulators to prevent any
part of the antenna touching a rafter. A fire risk could exist if the
antenna's wire is simply laid on the rafters, especially if using
Wayne :
You got some good advice so far.
I am in agreement that an outside antenna will perform better than one in the
attic but
you can always start with an attic antenna and add an outdoor antenna later.
An attic antenna makes a great backup antenna as it will not succumb to severe
weather
My radio (K2 with the internal ATU) hasn't shipped yet, but that
shouldn't stop me from putting up an antenna, right? If only I knew
what to put up, that is. That's where I'm asking for help.
I want to start out with an loop antenna in the attic. Why loop? Mostly
the very American idea that
...@mailman.qth.net] On Behalf Of Wayne Conrad
Sent: Monday, April 11, 2011 4:12 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K2 + ATU + Loop antenna in the attic
My radio (K2 with the internal ATU) hasn't shipped yet, but that
shouldn't stop me from putting up an antenna, right? If only I knew
what to put
Wayne,
I understand your reasons for putting an antenna in the attic, but that
will offer no additional lightning protection over putting it outside.
An outside antenna will pick up more noise from the house wiring, so why
go to the trouble. Even if you mount your loop antenna on short
On 4/11/2011 4:11 PM, Wayne Conrad wrote:
I want to start out with an loop antenna in the attic. Why loop? Mostly
the very American idea that more wire must be better, plus it's
balanced--I hope to not need a separate RF ground, or counterpoises, or
any of that jazz).
You need a safety
A loop in the attic is asking for coupling to all those nearby conductors. They
will do
the following:
1) Capture and dissipate your precious RF. No-one will hear you.
2) Couple large amounts of electrical noise into your receiver. You will hear
nobody.
3) Pick up even QRP levels of RF and
Wayne, like many members of this list, I've been right in your shoes.
Like the previous posters, I'd recommend getting your wire outside. Here's a
specific recommendation:
While waiting for your radio to come, build a 4:1 unun. Here's a website
with instructions:
On Mon, Apr 11, 2011 at 7:11 PM, Wayne Conrad wrote:
I want to start out with an loop antenna in the attic, etc
Wayne, you've already gotten some pretty good advice on this subject.
May I add my two cents' worth here?
First, you did not make it clear at all if your attic antenna is a
The base loading coil is nearly identical in design to the toroidal
coil of AD5X, linked below. I do intend to find 160 80m tap
locations for the antenna.
FYI - The maximum power I've run with my 43-foot vertical and matching
system is 1200 watts with no problems experienced for several
over 1300-miles away (not in the prime DX season).
73, Ed - KL7UW
--
Message: 15
Date: Sat, 5 Jun 2010 18:26:41 -0500
From: Bob Naumann w...@w5ov.com
Subject: Re: [Elecraft] K2 ATU and 43-ft Vertical
To: elecraft@mailman.qth.net
Message-ID: 017001cb0506$8e203850
The base loading coil is nearly identical in design to the
toroidal
coil of AD5X, linked below. I do intend to find 160 80m
tap
locations for the antenna.
I hope you have serious top loading.
I have a video of a base loading coil throwing a two inch
long arc when running 500 watts on
I happened to be down at Harbor Freight yesterday and noticed they have
20-foot telescoping aluminum flag poles on sale for $55. That should
make a good vertical on 40-10 meters (almost 5/8 wave on 10) with maybe
a little bit of top-loading needed on 40. It even comes with an
American flag. :=)
Does anyone have any experience with trying to match one of these 43-ft
verticals, that are being offered by several manufacturers, using the K2s
internal ATU? Is it able to find a match on 80-meter CW? Are there any
particular brands of 43-ft verticals that you like or don't like? Most of
Paul, the K2 internal tuner is a wide-range device and should be able to
match the 43 ft vertical from 10 thru 80 unless you happen to pick an
unfortunate length of feedline. The impedance seen by the tuner will depend
on the feedline length.
All of the available 43 ft verticals should work
Paul,
That is not an easy question to answer, and for your particular case, we
do not have enough facts.
It would be necessary to know the configuration of the radial field for
that vertical, then plug that information into an antenna modeling
program to find the impedance at the feedpoint to
Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Paul Huff
Sent: Saturday, June 05, 2010 5:20 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K2 ATU and 43-ft Vertical
Does anyone have any experience with trying to match one of these 43-ft
, June 05, 2010 6:20 PM
Subject: [Elecraft] K2 ATU and 43-ft Vertical
Does anyone have any experience with trying to match one of these 43-ft
verticals, that are being offered by several manufacturers, using the K2s
internal ATU? Is it able to find a match on 80-meter CW? Are there any
Does anyone have any experience with trying to match one
of these 43-ft
verticals, that are being offered by several
manufacturers, using the K2s
internal ATU? Is it able to find a match on 80-meter CW?
Are there any
particular brands of 43-ft verticals that you like or
don't like?
To Don and everyone else who encouraged and helped me build my K2 I
would like to say thank you, after sitting in a box for about 8 months
due to a move at home, then a move at work, I officially moved into my
new lab today and got my mitts on a power meter, and finished the ATU
cal, now that I
Hello group,
I'm needing a tuner for use with my K2, and wanted to know the pros
and cons of the KAT2 vs. the T1. Is the only difference that the T1 is
stand-alone and the KAT2 is internal? Thanks in advance for your advice.
73,
Kristina KE7LUC
Kristina,
The KAT2 has a much greater tuning range, handles 2 antennas and
remembers the last tuned settings for each band on both antennas.
Communication between the K2 and KAT2 is automatic and quite painless.
Of course, if you need a remote tuner (mounted at the antenna for
example),
piece of engineering in the whole
K2 options line.
Good luck and 73
Bob N6WG
- Original Message -
From: Kristina Wright [EMAIL PROTECTED]
To: Elecraft Reflector elecraft@mailman.qth.net
Sent: Tuesday, November 13, 2007 11:06 AM
Subject: [Elecraft] [K2] ATU
Hello group,
I'm needing
There is a RF cable from the ATU to the mainboard. The auxbux is detecting
the ATU so that's connected, but the RF most likely is not. The RF cable
plugs into the main board at RF-P6. Do not connect it to RF-P3, the battery
connector!
Dan / WG4S / K2 #2456
snipneither Ant jacks 1 or 2 seem to
Tim,
Even when the KAT2 is attached, you can still hear signals through the
base K2 antenna jack - that is NOT a problem.
If you cannot receive through the ANT1 or ANT2 jacks on the KAT2, the
problem must be with the KAT2. Since I presume it worked before, look
for the easy things first,
I have a problem which I am sure is my own error, but for the life of me I
cannot seem to find the fix. I just switched the K2/100 module with regular K2
cover which has the K2ATU. The menu shows ATU as auto, but neither Ant jacks
1 or 2 seem to function, The regular BNC that is not connected
I am disappointed that I received no reply to my query re the KAT2.
Perhaps I did not ask the question clearly.
I would like to read the UNMATCHED Forward and Reflected power on the antenna.
This information would help me trim the antenna to resonance. I think that I
can see the UNMATCHED
Jerry,
See page 18 of the KAT2 manual (and the chart on page 21) for the full
details, but the 'CALS' setting will bypass the matching network and I
believe that is what you want to accomplish.
73,
Don W3FPR
-Original Message-
I am disappointed that I received no reply to my query re
G'day,
I'm using an indoor wire antenna for all bands except 30m, where I'm
testing a
home built mag loop. The wire antenna is connected to ant #1, the mag
loop to
ant #2. The mag loop is resonant and doesn't use the ATU, while the wire
antenna needs the ATU.
Now each time, I change to
On Tue, Sep 14, 2004 at 07:24:58PM +0300, Ben Dalfen wrote:
No problem. Just use PF1 or PF2 for switching your ATU between active and
CALS modes. Takes 2 seconds.
Is it possible to program PF1 or PF2 to switch the ATU between modes? All I
have managed was to program these keys to select the
42 matches
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