Hello All,
Here's another question for the antenna gurus. I would like to use a balanced
feeder feeder for a multiband dipole. The problem is that my shack is in a
steel shed and we all know running a balanced feedline near metal objects is
a no-no. So, is there a way of getting a balanced f
That brings up a slight nit -- if you go into CW TEST mode the C blinks,
but as you point out, you can't do that from another mode. That's ok,
but when you go to another mode, it doesn't blink anymore, and TUNE
won't work, so it sometimes leads to a bit of headscratching. (Plus, if
you try to
In CW mode, I hold MODE to put the K2 in TEST mode when I'm not operating.
That completely disables the TX in the event the key is bumped.
Ron AC7AC
-Original Message-
No, it stays low if your power is below 2W. I turn the power down when
I leave the RX on and leave the room (don't wa
On Mon, 19 Feb 2007 18:44:25 -0800, Rod Ai7NN wrote:
>Precisely what I'm looking for. (not sure way some posters
>thought I was after something illegal, I thought my request was
>clear.)
With all due respect, Rod, you DID say "LPFM". That has a
specific meaning to us regulatory and broadcas
Does anyone know the status of the KPA800 and KPA1500 amplifiers? When will
they be available?
Roy Morris W4WFB
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Thanks Jim,
On 2/19/07, Jim Brown <[EMAIL PROTECTED]> wrote:
On Sun, 18 Feb 2007 15:19:28 -0800, Rod Ai7NN wrote:
>Anybody have a suggestion or two for a decent quality
>rig that couples to an MP3/CD-player, stereo...etc. Only need to get
>the signal 50-100ft or so.
A visit to places like Fry'
A very nice piece of work Jack! Thanks for sharing it. I really like the
photos - kind of like I was right there.
I can confirm all of your conclusions based on my day job work. One
additional thing to mention that some might not be aware of is that it is
also good to parallel multiple capacit
On Mon, 19 Feb 2007 17:54:25 -0500, Don Wilhelm wrote:
>3 bands is about my limit.
Yes -- beyond that, they get both electrically and mechanically unwieldy.
>One other point - do not try to combind bands that are close to the 3rd
>harmonic of the lower one on the same coax - that too will drive
No, it stays low if your power is below 2W. I turn the power down when
I leave the RX on and leave the room (don't want to be a stuck ditter)
but have fotgotten to turn it back up. Tune doesn't work then. Bit I
have also had QSOs with it left all the way down. I stuck the dummy
load on it a
I've added a new page to my web site presenting measurements of the
effectiveness of various capacitor and capacitor/ferrite bead bypassing
strategies. The page may be viewed at
http://www.cliftonlaboratories.com/bypassing.htm
Jack K8ZOA
K2 SN 5689
www.cliftonlaboratories.com
_
In a message dated 2/19/07 7:00:22 PM Eastern Standard Time,
[EMAIL PROTECTED] writes:
> A "fan dipole" is a single-band affair. It's is a way of broadening the
> bandwidth of a single-band dipole by simulating a "fat" wire using multiple
> wires. Typically the wires join at an apex at the cente
Dave,
I would believe you are experiencing ground loop problems rather than
feedback - yes, groundloops can introduce feedback of a type, but here in
ham corcles we usually relate feedback to the RF type. Check by operating
into a dummy load - if it persists, it is ground loop problems and not RF
What you are propsoing is the SAME as using a triband yagi or quad
with a common feed. Nobody ever "worries" about 'extra noise" due to
using tribander!
:-)
de Doug KR2Q
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HI all:
K2VCO has come closest to answering the question actually asked.
I suspect that you "heard" this from contesters (like me) during
serious Multi-Op/Multi-transmitter operations.
Since these M/M stations operate all bands all the time, if a
"multiband" antenna is used anywhere, it will be
For sheer inginuity, I just love the clothes line dipole in QST a few years
ago. If you have the facility to slide the feed point back and forth using
a full loop (folded dipole), perhaps with a remote controlled motor, one
feedline and one loop of wire will do a lot of multi-banding for you an
just testing - . ... -
kn6bi
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I have a Heil Clearspeech speaker and it specifically recommends a
separate power supply for the speaker, do not run off the same supply as
the rig.
I didn't see the reason for that, so I hooked the speaker up to the same
supply I used for the K2. It sounded pretty good a low volume, but when
I
Jim's another OT like me when all the HF Ham bands were
harmonically-related. Paralleled dipoles worked quite well in that setup
although there was a fair bit of interaction, especially from an 80 meter
dipole on a paralleled 10 meter dipole. I still recall one summer day
running my antenna up and
Scott:
I use several fan dipoles. Both use two elements. One operates on 40
and 30 meters (and I get 15 meters, 3rd harmonic of 40, free into
the bargain, but the SWR is a bit above 2 on 15 m, and I must use
tuner to match it to the K2. ). The other antenna operates on 80 and
20 meters (and
I have a significant feedback problem with my K2/KPA100. When
transmitting there feedback (sounds as clear and as loud as a PA system)
through an attached external speaker. The only partial solution I have
found is to use a sea rate power supply for the K2 and NOT connect the
power supply to
Hello all,
If anyone has a Yaesu FT-2600M 2m rig or other VHF/UHF rig with a DB-9
Pin port for packet on it and you want to sale it, please email me. I'm
looking for such a rig for a portable WL2K EmComm station.
72,
Ed,WA3WSJ
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Elecraft mailing l
Here is what L.B. Cebik says on the topic of all-band folded dipoles.
http://www.cebik.com/wire/wbfd.html
73,
John Gibson, no8v
>A lot of them have been replaced by the now-ubiquitous B&W All
>Band Folded Dipole - the same antenna that I use in an open-V
>configuration. It works equally f
If paralleled dipoles for different bands on a single feed line are called a
"fan dipole" it's a misnomer that can cause a lot of confusion. Sometimes
folks pick up short-hand term by accident, like assuming that a dipole is
always fed at the center to be a "dipole" when, in fact, a dipole is a
hal
In a message dated 2/19/07 4:45:23 PM Eastern Standard Time,
[EMAIL PROTECTED] writes:
> have been told
> lately that the unused antennas on the setup would pick up additional
> noise.
If so, it will also pick up additional signal.
> Has anyone ever done any testing with multiple antennas on
Frank,
Yes, I have several ideas:
Check it first on a 50 ohm dummy load to see if the power output as measured
with your 'scope (or RF Probe) agrees with that displayed by the KX1.
Your antenna is connected to the output of the tuner, and the displayed SWR
is read at the input of the tuner. Wha
[EMAIL PROTECTED] wrote:
Has anyone ever done any testing with multiple antennas on one
feedline to see if they really do pick up extra noise?
Hm, nobody answered this. My feeling (and it's not based on experiments)
is that it would normally not be a problem. For example, if you have an
80 a
On Mon, 19 Feb 2007 22:41:24 -, Ken Kopp wrote:
>Picture two telephone poles (or towers) with the support
>points for the individual dipoles several feet apart vertically
>along the two poles/towers.
>Such an arrangement is sometimes seen at a National Guard
>armory or Civil Defense center.
Hi all,
I love my K2, and need to use it for ecomm work if ever there is an
emgergency down here. It is a good excuse to bring it to the EOC, so it
doesn't dissappear when the island I live on dissappears in the next
Katrina. I have finally gotten on HF Pactor I with my K2. This endeavor
has tak
Hi all,
Does anyone have any idea about the possible cause of the low power
reading by the KX1 ATU?
Thanks,
Frank
Hi,
After having been off the air for about a year (moving house; other
interests) I have recently fired up my KX1 again. When tuning up a
random length of wire, I noticed that
Boy I got a problem know. While building #006013 at alignment and test, part 11
i've had a problem with first step the counter changing rapidly. checked prob,
and solder and parts . get a 4 MHz signal on a receiver at 4.000 MHz While
checking VDC on control board Q1 - U7 I must have shorted
Larry,
The toroid cores are non-conductive, so if the bare wire of the end turn is
tinned it is not a problem, BUT if you also bared the wire of an adjacent
turn so you could have a one turn shorted to another on the winding, that is
not good and you will have to rewind.
73,
Don W3FPR
> -Ori
Scott,
I use 'fanned dipoles' fed with a common coax - yes a balun is highly
recommended.
The secret to fanned dipoles is to get the ends as far apart as possible so
they do not interact. Expect some interaction in any case, and tune them
from the lowest band first.
I have tried 5 bands - in a
I happen to have pictures of just such a beast at
http://www.craigr.com/coppermine/thumbnails.php?album=35. It's cut for
40/20/10 meters and works nicely on 15 of course. The KAT100 tuner makes it
work on the WARC bands and even on 80m though not very well.
Craig
NZ0R
K2/100 #4941
K1 #1966
KX1 #1
Yes, you CAN put multiple dipoles on one feedline.
It's commonly done in the government and/or commercial
world. It's often referred to as a "fan dipole". The feedline
can be either coax or open wire/TV twinlead.
Picture two telephone poles (or towers) with the support
points for the individual
Hi, Sergio/Paolo.
Sergio asked:
what kind of antenna do you use for pedestrian mobile?
You can find full details of my pedestrian mobile antenna here:
http://web.ncf.ca/fj620/contests/fybo2007/
Paolo Said:
What I have for antenna is a 24 feet length of small wire, plus another 15 feet
as
Hello everyone,
On the 160M module, toroid L1 .I managed to burn off just a little too much
enamel insulator from 26ga. wire.Bare copper into the 1st 1/2 turn on
the toroid.
Am I o.k.? Or should I rewind?
Tnx
from new guy ,just starting out.
W1EGJ
Larry Wright
_
Hi
This is a little off topic, but I don't know of a better place to
find someone that would know the answer to my question.
Many years ago I used one coax to feed three different inverted V
antennas all for different bands. At the time I thought they worked
just fine. Worked all kinds of dx with t
Hi,
My KX-1 has the internal tuner option. What I have for antenna is a 24 feet
length of small wire, plus another 15 feet as a counterpoise. I attach a big
bolt (actually a nut) to the wire ant throw it up a tree, ten toss the
counterpoise in the opposite direction. I have a tiny paddle connected
~
N2CQ QRP CONTEST CALENDAR
February 21 - March 22, 2007
~
80 METER FOXHUNT (QRP CW)
EST/EDST: EACH Tuesday 9 PM to 10:29 PM
Info: http://www.qrpfoxhunt.org/
~~~
Hi Don,
Yeah, it's strictly a wish list item...far from a deal
breaker. I turned the power way down during the
contest when I was changing bands and didn't want any
Hi Current messages popping up. I was also intersted
to see how little power was required for the T-1 to
work.
Naturally, there
Ken,
The power reduction algorithm is in the K2 firmware, but it is not active
unless the KAT2, KAT100 or KPA100 are installed. It would take a firmware
change to limit the power with all TUNE operations, and those of us who
repair and align K2s would miss the ability to dial in any power level w
Martin Gillen wrote:
Hi,
I've been finding that the keyer memories in the KX1 are a bit too
small for my basic CQ call when I'm pedestrian mobile. I'd like to be
i have to ask...
what kind of antenna do you use for pedestrian mobile?
--
___
peace,
sergio
photographer, journalist, visionary
w
Hi,
I've been finding that the keyer memories in the KX1 are a bit too
small for my basic CQ call when I'm pedestrian mobile. I'd like to be
able to call "CQ CQ CQ CQ CQ CQ DE VA3SIE/PM VA3SIE/PM K". Sometimes
when conditions are poor maybe another 3 or 4 CQs too! I have to
resort to loading t
There must be, and somebody more knowledgeable than me
is bound to jump in and tell you how to set it up!
8-)
I found that my K2 (without me doing anything) was set
up for what I would consider to be full break-in,
i.e., I could receive between each of the dits and
dahs I was sending! It's a bit
Does that mean that when I use the tune button the tx goes all the way up to
two watts?
...ah! a _real_ QRP operator
I honestly don't know. Is there enough RF for the tuner to work at
lower output levels? Would anyone build a system that _raised_ the
power when doing a tune cycle? Guess we'll
Hi Mark and Leigh,
I'm using an Elecraft T-1 external tuner, which I also
use (less and less) with an FT-817. It would still be
a nice feature for those who use an external tuner. I
didn't know about its ability to reduce power for
internal tuner operation because I don't have one.
I wonder i
Tune Button – How about making it so that hitting Tune
automatically reduces transmitter output to just a few
watts for the tune operation, then returns the K2 back
to it's previously set output when tuning is complete?
Running an Elecraft tuner? The K2/100 drops down to 20 watts when
running th
Hi All,
Just spent this past weekend in the ARRL International
DX Contest (CW) with my K2. I haven't spent more than
a few minutes in front of it despite getting it back
in August '06 so this was a good opportunity to become
acquainted with it.
Previous transceivers I have owned were an HW-101,
I'm not quite sure how to ask this, and perhaps it's covered somewhere
else (again, not knowing how to ask leaves me having trouble finding
it in the archives) :)
Anyhow, in a fast paced contest such as this weekend's ARRL DX CW, I
found myself wishing that the time between finishing transmitting
I agree with Arie, the K2 is not a technically challenging build. The
fact that the build is broken up into many smaller steps really helps
make it easy to sit down, work on it for a couple hours, then go and
do something else.
The engineering that went into this, and attention to detail, is supe
Hi everybody!
Wanted to give everybody some advance notice of our
next contest. This contest is BRAND NEW and a contest
format that was suggested by QRP-ARCI Members.
However, since it was new, it missed the deadline for
QST. Please feel free to publish it to any lists you
may be members of.
The
Chris,
I have built a HW8 (30 yrs ago), a K2 (2006) and several other kits and
projects during my ham life.
The K2 is just as easy to build as a HW8. Just follow the instructions
and take your time. As for engineering, I was most impressed by the K2
kit. No long wire cables atc.
I loved building
Hi -
The beauty of building the Elecraft K2, as compared to
the many Heakkit kits they sold - there is no wires,
or point-to-point wiring and bundled cables - like one
often found in various places in Heathkits. I think I
built 6 or more Heathkits. They all worked - very
little if any "alignment"
On Sun, 18 Feb 2007 15:19:28 -0800, Rod Ai7NN wrote:
>Anybody have a suggestion or two for a decent quality
>rig that couples to an MP3/CD-player, stereo...etc. Only need to get
>the signal 50-100ft or so.
A visit to places like Fry's Electronics or Best Buy will yield several
VERY low power FM
--- Chip Hood <[EMAIL PROTECTED]> wrote:
> I am trying to get a feel for the difficulty to
> build a K-2 (w/SSB and tuner options) compared to a
> Heathkit HW-9: difficulty, time to complete,
> troubleshooting, etc.
It's been a while since I built an HW9 and the "little
grey cells" seem to be
Chip Hood wrote:
I am trying to get a feel for the difficulty to build a K-2 (w/SSB
and tuner options) compared to a Heathkit HW-9: difficulty, time to
complete, troubleshooting, etc.
My last kit was a good while back - an HW-9 with band pack. I'd like
to build the K-2 myself but don't want to
Hello to the group,
Sometime ago someone posted a specification for a long wire antenna for use
with the K1, 80m to 15m. I remember the length as being 110 feet, but do not
remember what was stated for the counterpoises.
I have been looking at the elecraft mailing list, but have not found the t
It is called a "Bias T" and you will need two of them to accomplish your
goals. One at the shack end and one at the antenna end. A sample of a
commercial bias t can be seen here.
http://www.mfjenterprises.com/products.php?prodid=MFJ-4116
Hope this helps..
/joe
-Original Message-
From:
Chris,
I have no experience with Heath Kits, but understand that they were an
important part of amateur radio and electronics history for the masses.
However, there is always one description of some of the Hkit projects,
perhaps an exaggeration , that has always stuck in my mind: "Grief Kits".
Ron,
I just finished a basic K2. I built it a couple hours at a time over a couple
months. I will make a wild guess that it took me about 20 hours. This is a real
rough number, but should give you an idea. Lots of fun and only a couple
difficult things to do.
The assembly instructions are fabu
I have not built a Heathkit. I have a background in electronics, I
have done plenty of soldering, but I have not built many kits. The
directions, the way the parts are stored, and the support makes a big
difference with this kit. Plugging components in, soldering them, and
following the ins
much easier than the heathkit.
You will notice the parts are smaller, has no point to point wiring,
and almost no mechanical assemblies involved like the tediuos
assemblies in HW 9. The alignment (for K1) is easier too.
Many find it enjoyable to build and usually sell them so they can
build
Well ... the K2 has a lot of parts, but it is built one part at a time.
Have you downloaded the K2 manual from the Elecraft website? Reading
the manual should give you a good feel for the difficulty in of
building the unit, and the troubleshooting information available.
Of course if you do have
I am trying to get a feel for the difficulty to build a K-2 (w/SSB and tuner
options) compared to a Heathkit HW-9: difficulty, time to complete,
troubleshooting, etc.
My last kit was a good while back - an HW-9 with band pack. I'd like to build
the K-2 myself but don't want to bite off more t
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