I disagree, your coax suggestion has 32% loss against a good wl installation
which would provide 9% loss.
Use of RF ammeter on each leg can be used to balance the loading via antenna
leg adjustments if required.
A dedicated eg: Johnson matchbox or GQ balanced tuner etc at TX would give
good
I use a fan dipole as well (40, 20 and 10), and IIRC from modelling it,
putting a 17m wire in the mix really messed up the match. You might want to
try removing the 17m dipole and see if there's a better match.
Barry W2UP
--
View this message in context:
Anyone have one of these. I've got a chance to get one for a song.
I'm interested in how they work from
1-1500 miles stateside
I'm not opposed to dx but I'm a ragchewer mostly on 6-2060.
Can contact direct and maybe better since it's off topic.
73
Mike R
Play me some fiddle, but no
Dave, Yes well xyl problems can be very tricky to resolve.
If money was no barrier a remote K0/K3 setup may have solved the aesthetics
issue, and cut the feedline length to small numbers.
Not sure how you measured the loss on the 75 ohm coax?
A ocf dipole fed with a Balun designs 4115ocf balun
Eric
How do I find out where I am in the queue?
I have been checking the shipping status page and it indicates that you are
still processing first day orders which may really be the case
Ariel NY4G
Sent from my iPhone
On Apr 5, 2012, at 1:19 AM, Eric Swartz WA6HHQ - Elecraft
For the k3/10, I'm not exactly sure about high swr per say but I was having a
problem a year ago with the lo power board on the 10w model.
Wayne told me at that time at that time
The low power board had so little problems that he hadn't got around to writing
code for impedance mismatch.
The KX3 owner's manual isn't quite clear regarding switching power
supplies. Yes, many of them are very noisy, especially the miniature
variety with no shielding. But well-designed switchers with good
shielding and filtering are just fine. This includes a lot of the
larger bench supplies
Nice example here;
vk4tux
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Tony Estep
Sent: Thursday, 5 April 2012 1:26 PM
To: Elecraft Reflector
Subject: Re: [Elecraft] Which ONE rig would I buy - BUT somewhat off topic
More shack cleaning here. I have for sale two baluns, both in excellent
condition. I purchased them new and had used them occasionally for some
temporary contest setups, but they have been inside and unused most of the
time. Prices include manufacturer's printed documentation and shipping
Adrian,
I've been looking at putting up an OCF antenna to replace my 102' doublet
fed with ladder line. Can you tell me what frequencies on 80 through 10
meters your OCF antenna is resonant? Also, how much of each band can you
cover with less than 2:1 SWR? I'm interested in the CW portions of
Speaking of balanced lines and tuners, I recently did an experiment that
surprised me.
I have a dipole fed with 600-ohm open-wire line (and some window line indoors).
I usually
tune it with a Johnson Matchbox, a fully balanced link-coupled tuner.
I was lucky enough to get my hands on a
Hi All,
This seems to come up a lot, and I always have to wonder how such a question
can be effectively answered, at least convincingly. The problem is that
everyone has different wants and needs. Also, just about every radio out
there is significantly different in various ways, whether it's
True, when I decided on the Eagle over the K3, I added the price of
similar accessories
that I would want to each radio to determine total cost. The K3 came
out slightly
more expensive, but most of the difference was the sales tax on the
Elecraft.
BTW, I'm ordering a K3 as we speak!
The
Hi,
Is the info page up yet? I can't find it...
73 de Adde, SM0SHG
(K3/0 #0006 and K3/100 #6334
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K3-0-tp7430161p7440962.html
Sent from the Elecraft mailing list archive at Nabble.com.
I was once involved in durable goods retailing --
mid to high end bicycles in this case. It was
not uncommon for customers to get hung up between
the bicycle they wanted to buy and the bicycle
they thought they should buy. This was usually
triggered by price. I told them that unless
Vic,
Where was the frequency of the GDO with respect to the band the tuner
was set to? If it was below the band of interest, I would expect
something like that - the T-Network is a high pass filter.
73,
Don W3FPR
On 4/5/2012 12:28 PM, Vic K2VCO wrote:
Speaking of balanced lines and tuners,
Thanks Don
It was just a slip of the finger on the keyboard. my order was
actually for the k3/100 kit which includes the KPA3
David Moes
VE3DVY
I hope you ordered the KPA3 rather than the KPA100.
The KPA100 is for the K2.
If you did actually order the KPA100, just contact
One related question, when speaking of the efficiency of a balanced
feedline + balun and tuner, what would be a best/worst case scenario for
the loss introduced by the balun+tuner? Would loss vary significantly by
frequency for a nonresonant antenna? I'm trying to develop an intuition
about the
All the tests -- signal comparison and noise tests -- were done on the same
band, to which
the tuner was tuned (40m).
On 4/5/2012 12:23 PM, Don Wilhelm wrote:
Vic,
Where was the frequency of the GDO with respect to the band the tuner was set
to? If it
was below the band of interest, I
Hi,
http://www.appleinsider.com/articles/12/04/05/apple_interested_in_wireless_power_for_charging_devices_on_store_shelves.html
Something tells me this is bad news for hams. I've read snippets in the daily
newspaper about this technology. I believe it uses HF. Imagine a world full
of cheap
Most tuner losses occur in the same way as feed line losses - resistive
losses in the conductors. In a tuner, that is usually in the inductance. The
higher the current, the greater the resistive losses.
That's why high impedance feed lines such as open wire line have typically
much less loss than
The efficiency of the T-network can be less than the Matchbox-type tuner or an
L-network
because it is possible to find a suboptimal combination of component values
that will give
you a 1:1 match. I believe that the most efficient match is achieved when the T
inductance
is set to the minimum
Thanks Ron for the great explanation. 73
On Thu, Apr 5, 2012 at 1:41 PM, Ron D'Eau Claire r...@cobi.biz wrote:
Most tuner losses occur in the same way as feed line losses - resistive
losses in the conductors. In a tuner, that is usually in the inductance.
The
higher the current, the greater
The external balun you are using is probably better than the one built into
the tuner. An English ham did research some time back and found using a 1:1
current balun less lossy that a 4:1 or others, despite the line mismatch the
tuner made up for it with tested less total loss.
With a well
Has anyone else encountered HRD turning *off* their AGC? I've had it
happen twice in the past day. The first time, it really had me chasing
my tail until I noticed the K3 display. The second time, I was looking
for it.
I've also had my DATA MD change on me on two bands without me doing it,
My good friend, W8DA has written several apps for Android phones and
Android Tablets, including, Morse Trainer, Morse Decoder, DTMF, DX Cluster,
NCDXF Beacon, Droid PSK, Droid RTTY and now Droid SSTV. These allow you to
simply place your Android Phone or Tablet by the speaker of your
Hello,
Not planning much flying in the future, so I just did 7-day listing of
my David Clarks on eBay.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=200740066303ssPageName=ADME:L:LCA:US:1123
Have used them with Elecraft K3 - they work fine. Set bias=on, adjust
equalization to suit.
Any
Hi Joel,
this is a known issue of HRD. Wayne added some code in the K3 firmware to
suppress that miss-behaviour of HRD so you should update to the latest K3
firmware to get rid of the problem. Good luck!
Vy 73, Olli - DH8BQA
http://www.dh8bqa.de/
- Original Message -
From: Joel
Doh! I just read that too on the reflector in the past week. I
completely forgot about it. Thanks for the reminder.
Joel - W4JBB
On 4/5/2012 4:33 PM, Oliver Dröse wrote:
Hi Joel,
this is a known issue of HRD. Wayne added some code in the K3 firmware
to suppress that miss-behaviour of
The new owners of HRD are also aware of this issue and want to help
solve it from their end. Rick Ruhl, W4PC, is looking for solid,
repeatable evidence of this happening and what seems to cause the situation.
73,
--Ian
Ian Kahn, KM4IK
Roswell, GA
km4ik@gmail.com
K3 #281, P3 #688
On
Since I started using the K3 for PSK-31 contacts, I've noticed
that I have to make many fine tuning adjustments during weak
signal QSOs. I don't remember having to make as many using the
Small Wonder Labs PSK-20 direct conversion receiver. I am using
Data-A mode and a SignaLink USB sound card
On 04/05/2012 05:34 PM, Paul VanOveren wrote:
My good friend, W8DA has written several apps for Android phones and
Android Tablets
/with a simple interface also transmit, PSK, RTTY and SSTV.
You may further investigate his applications by going to:
www.wolphi.com
This is interesting,
It
Mike,
I did not see any on-list responses to your question.
You are a ragchewer, and that usually means you will be working locals
as well as distant stations (1 to 1500 miles), so you may not want a
vertical antenna at all.
A vertical antenna (any of them) typically have a low angle
On 4/4/2012 10:27 PM, Vic K2VCO wrote:
Have you used the birdie removal feature? It has that effect.
No, at least not intentionally or even knowingly. Is there a birdie
un-removal feature?
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2012 Cal QSO Party 6-7 Oct 2012
-
On 4/4/2012 9:10 PM, Hisashi T Fujinaka wrote:
Do you have a DSP? Is it noise that's different?
It's a K3, permanent DSP. And yes, it's on background noise. I can't
tell any difference on the signals, but then, this *is* CW, not much to
change on my end.
73,
Fred K6DGW
- Northern
So far as I know, I've never removed a birdie. I don't know how to do
it, so if I did, it was unintentional and accidental ... not totally
unheard of for me. :-)
I'm usually a sucker for anything that someone describes as pretty
cool but so far I haven't seen anything like that on the P3 :-(
I've seen several audio interfaces which are based on existing Bluetooth
accessories for cellphones. YOu can use either a Hands-free car kit, or an
ordinary Bluetooth headset.
Matthew Pitts
N8OHU
From: ron ronc...@verizon.net
To: elecraft@mailman.qth.net
Wise Group people, I must have something set wrong because when trying to
work split with the K3 sub receiver, I get the DX station in the left ear
but do NOT hear the pileup in the right ear (no audio in right ear). I have
read the manual and the extra book but cannot figure out what is wrong.
Interesting! The balun I made is just a basic core type current balun
modeled after the one listed here (but made with high temp wire inside
teflon tubing):
http://vk5ajl.com/projects/baluns.php#current
On Thu, Apr 5, 2012 at 2:15 PM, Adrian vk4...@bigpond.com wrote:
The external balun you
Yes. To undo any birdie removal for the band you are on, select SIG RMV in the
menu and
then tap CLR.
On 4/5/2012 4:18 PM, Fred Jensen wrote:
On 4/4/2012 10:27 PM, Vic K2VCO wrote:
Have you used the birdie removal feature? It has that effect.
No, at least not intentionally or even
Bill,
I would suggest that The other station is drifting is the best answer.
The drift of either the 1ppm or 5ppm TCXO is based on temperature, and
not on other factors - the 1% TCXO is better, but it is all with respect
to temperature, not any other considerations.
The 5 ppm TCXO vs the 1ppm
Hi I have a nearly new Elecraft P3 panadapter that I would like to trade
towards a Tec Tec EAGLE transceiver. Not interested in a sale right now, just
working out a trade.
73 de Dave K1OPQ dbper...@gmail.com
__
Elecraft mailing list
Mike -
Everything Don says is true... but since the Hy-Tower is designed for 80,
40, 20 15, 10 meters, you should not need a tuner on those bands (I did
not), but 60, 30, 17 12 will very likely need one.
Dave
K9FN
On Thu, Apr 5, 2012 at 6:56 PM, Don Wilhelm w3...@embarqmail.com wrote:
Mike,
I do not know anything about Bluetooth, in fact I do NOT even own a Android
phone, however, I know that QST will publish in May issue and article about
W8DA, Wolfgangs' apps for the Android Phone and Tablet, in fact the front
cover picture will be about the interface for the phones I believe,
Hi Julie,
You probably have SPKRS=1. With that setting, and the Sub ON, you get
mixed main and sub audio in the left earphone only and with the sub off,
main in the left only.
Try setting SPKRS=2.
Cheers and 73,
Fred Cady
The Elecraft K3: Design, Configuration, and Operation
www.ke7x.com
fcady
On 4/5/2012 4:53 PM, Vic K2VCO wrote:
Yes. To undo any birdie removal for the band you are on, select SIG RMV in
the menu and
then tap CLR.
OK, truly no idea how this got there, but in that 100 Hz segment,
Shft=-2. I set it to zero, all is well. I may not update my firmware
again, it
Thanks for your answer Don. I guess I'll put the KTCXO3-1 lower
on my wish list.
Fortunately, with a little care cocoaModem automatically
preserves the transmit frequency. I also help it by using the
second receiver to retune the signal leaving the transmit
frequency unchanged. Being able to
Consider this one:
http://www.gammaresearch.net/hps-1a.html
Jim ab3cv
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