Mike wrote...
Avoid all the adapter cruft and plug the headset into the rear panel. Nothing
hanging
off the front panel to snag stuff. Set Menu|Mic Sel to rP.h, and turn the
bias on.
For the CM-500, you'd better set it to rP.l because the CM-500 is a hot
microphone!
73,
George T
There's one nice thing about late hardware: the firmware gets better.
Lyle and I just added Dual Watch to the KX3, which works amazingly
well. At present the VFOs can be separated by up to 15 kHz, but in
theory we can go to 30 kHz with the present DSP implementation.
Now I'm looking for my
I'm looking for a KDVR3 voice recorder and the KFL3B 13 kHz FM filter. I
just got my K3 yesterday and thought I'd check here before I ordered
these from Elecraft.
Great little rig, BTW! A very quiet receiver and a strong from end!
Thanks,
Scott, N9AA
Below...
On Thursday, Mar 8, 2012, at Thursday, 12:14 PM, Gary Hinson wrote:
... and thank YOU Jim for your encouraging words. I do have the space
for
several quadrillion radials but not the energy to cut them all into the
ground below sheep/cattle/deer foot level. So I'm waiting
Hi there--
Am considering putting up a g5rv antenna and was wondering what
experiences K3 users have with this antenna. Is an external tuner
necessary? Is internal ATU3 up to the task of taming this wire?
Any hints will be helpful!
--
73 de Dick, ka1oz
Elecraft K3/100
GAP Titan-DX Antenna
Hi there--
Am considering putting up a g5rv antenna and was wondering what
experiences K3 users have with this antenna. Is an external tuner
necessary? Is internal ATU3 up to the task of taming this wire?
Any hints will be helpful
--
73 de Dick, ka1oz
Elecraft K3/100
GAP Titan-DX Antenna
PS:
Jim,
Thank you for the research.
Do you think these two cards will be good candidates for mating with KX3 and
netbook to be used for panadapter and SDR? Are they 96khz or only 48?
73, Igor UA9CDC
- Original Message -
From: Jim Brown j...@audiosystemsgroup.com
To: Reflector Elecraft
Great job Wayne.
30 kHz should be enough for most of the expeditions.
VE7CC IMHO is the best DX spotting software today.
73, Igor UA9CDC
- Original Message -
From: Wayne Burdick
To: k...@yahoogroups.com ; Elecraft Reflector
Sent: Friday, March 09, 2012 10:14 AM
Subject:
Hi Igor,
I don't know enough about the KX3 to have a good guess. They are 48 kHz
units, which is plenty for ham radio use.
73, Jim K9YC
On 3/9/2012 12:35 AM, Igor Sokolov wrote:
Jim,
Thank you for the research.
Do you think these two cards will be good candidates for mating with
KX3 and
I read the KX3 filter option has 1,000 Hz and 3,000 Hz filters that give a
choice of 500 or 1,500 Hz filtering in CW and 3,000 Hz in SSB. An explanation
of how that happens would help.
3,000 Hz filtering is not available in CW and 1,500 Hz is not available in SSB,
right?
It seems to me one
Well, I am pleased to report that this thread has ahappy ending as I finally
succeeded in getting the K3 to send PSK31 with my MicroHAM MKII N1MM!
I received a lot of help advice from this reflector and I'm sure I would
not have succeeded without that help!
Finally, I unplugged, checked and
I don't know if it's the best, but this one is good:
http://www.dxsummit.fi/DxSpots.aspx
GL!
Mike ab3ap
On 03/08/2012 11:14 PM, Wayne Burdick wrote:
[...] What's the best DX spotting web site?
Wayne,
N6KR
__
Elecraft mailing
Wayne,
I like this one: http://www.dxsummit.fi/DxSpots.aspx
73,
BILL
W4RK
On Mar 8, 2012, at 10:14 PM, Wayne Burdick wrote:
There's one nice thing about late hardware: the firmware gets better.
Lyle and I just added Dual Watch to the KX3, which works amazingly
well. At present the VFOs
On Thu, Mar 8, 2012 at 10:14 PM, Wayne Burdick n...@elecraft.com wrote:
Now I'm looking for my first DX split QSO with dual watch. What's the
best DX spotting web site?
==
Wayne, the gold standard spotting setup is the VE7CC program. Go to
his website and download his application. It is
I am sure that someone has mentioned this before however,
has someone located a good source of matching plugs for the
mic and headphone jack on the KX3? I would like to order
some in advance and start some projects.
73
Gene K1NR
KX3 S/N TBD : -)
On Thu, 08 Mar 2012 21:15:06 -0500
Don
On 3/8/2012 9:14 PM, Wayne Burdick wrote:
...
Now I'm looking for my first DX split QSO with dual watch. What's the
best DX spotting web site?
Here are a couple of sites that I find helpful, both filtering for
20 meter activity:
DX Sherlock
I took my K2 along on a recent cross country ski trip to a century old log
cabin located north of Steamboat Springs. Running 3 watts into a four feet
per side square loop antenna hung from the clothes pegs INSIDE the cabin, I
worked Texas, Idaho and Washington on 30m. There was four feet of snow
FYI another update to this. I had the same audio squeal on #4717 and asked
Gary AB7MY about it around the same time AB3LS's unit was in for repair.
According to Dale K6ZP in Elecraft Service, the fix was:
The KPA3 that is in for this problem has been fixed. The MMT3904 Q7 used
as the 18 Mhz
Wayne,
Well done! Dual watch has been a limitation of
smaller rigs for a long time - that is until now
Here is a list of DX clusters. Pick the one that is
closest to your QTH. Remember the W's are at the bottom
of the list.
73
Gene K1NR
Interesting, especially the decode number. Have you an opinion on the iMic?
73, Mike NF4L
On 3/8/2012 8:59 PM, Jim Brown wrote:
in the last few days I've been evaluating a couple of low cost audio to
USB interfaces for use primarily with digital modes -- RTTY, PSK, JT65,
FSK441. My primary
Wayne,
Try W6RFU in Santa Barbara (UCSB)
128.111.56.240:7300
73,
Tony W7GO
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
My guess is that this was about an hour after sunset in California, and just
before
sunrise in ZS. I have noticed really good conditions on this path and this
time, even with
my low-ish dipole on 40 -- apparently signals arrive at high angles. The
opening is pretty
short, so Wayne must have
Thanks Wayne! I can't wait to get my hands on the radio.
I like to use DX Summit: http://www.dxsummit.fi/DxSpots.aspx
http://www.dxsummit.fi/DxSpots.aspx
You can look at spots per band, do pointed or general searches, etc.
73, Lou, W0FK
wayne burdick wrote
There's one nice thing
If the Elecraft reflector was a Dear Abby Column in the newspaper, my letter
would read:
Dear Abby:
The best of the best ham radio gear manufacturers recently had a letter in
your column stating
We revised the PCB one more time to make it easier to manufacture.
Should have these final (we
Hi there--
Am considering putting up a g5rv antenna and was wondering what
experiences K3 users have with this antenna. Is an external tuner
necessary? Is internal KAT3 up to the task of taming this wire?
Any hints will be helpful
--
73 de Dick, ka1oz
Elecraft K3/100
GAP Titan-DX Antenna
Moe,
The 1.5 kHz roofing filter will still be used for very small splits
(typical of a DX station requesting up 1 or up 2 in CW mode
pileups). Beyond that the roofing filters are turned off.
I'll post a detailed explanation of the filter bandwidths when I get a
chance.
Wayne
On Mar 9,
And when can I order the Elecraft whole house solar kit?
I can be patient for a week or two if necessary.
73,
-
73,
Joe, W8JH
K3 1713, KPA 132
--
View this message in context:
http://elecraft.365791.n2.nabble.com/Understanding-the-KX3-Block-Diagram-tp7353810p7359239.html
Sent from the
I am probably the last person in the world to comment on this but in my. very
limited experience as a ham I have found resonant dipoles to be superior to a
G5RV. I have used properly cut dipoles that I made myself for 20m and 40m and
they worked much better than the G5RV I had. You may want to
I use a G5RV mainly on MARS freqs. From 3.2 MHz to 30 MHz using the k3 and
internal ATU with great success. Never found a frequency it would not easily
tune.
Jack
W4GRJ / AFA4DG
On Mar 9, 2012, at 1:33, Dick Roth raro...@gmail.com wrote:
Hi there--
Am considering putting up a g5rv
If you would like a visual DX Spot/Cluster, check out this one:
http://www.worldwidedx.com/dxspot.php. It taps into the DX Cluster and
maps out the last 25 stations heard. You can click on the map markers to
see more information or look at the list below. Clicking on the callsign
does a
I started off with a normal G5RV and the tuner handled it fine. But, it works
better as an all band antenna with the tuner if you do what I did and eliminate
the matching section (which only matches 20M's) and replace it with ladder or
window line down to a balun or at least a current choke
I was using a G5RV but noticed that it performed poorly on 10 and 15m. I
switched to a nonresonant dipole of similar overall length, fed with 450
Ohm ladder line, which works noticeably better on 10 and 15m (I think this
is due to loss from the 50' of coax I had been using to feed the G5RV).
The
Greg posted these two links on 03/04/12. Other than that they are right
angle plugs, I know nothing about them.
http://www.pchcables.com/hogmrian2mas.html
http://www.pchcables.com/3foan2stmato.html
73,
Don W3FPR
On 3/9/2012 10:30 AM, Eugene Balinski wrote:
I am sure that someone has
good antenna but another choice may be the off center fed dipole
build it or check into the carolina windom
http://www.hamuniverse.com/k4iwlnewwindom.html
and others
Bob K3DJC
On Fri, 09 Mar 2012 01:33:04 -0500 Dick Roth raro...@gmail.com writes:
Hi there--
Am considering putting up a g5rv
I agree and wanted to mention that you can choose any telnet cluster in the
Configuration--Cluster (Telnet) list. I prefer a node that uses VE7CC's
node software, CC Cluster. Telnet clusters are much more configurable than
web clusters and send spots real-time rather that at pre-set intervals.
I have used a number of G5RVs, both with and without balun. I carry one in
my 'go-kit' because it goes up quickly and comes down easily. I have used
duel band dipoles too but found them harder to get set up properly. The
spacers would tend to get snagged in trees and made them harder to coil up
To all who responded to my query, both on and off list, I thank you.
Years ago I built all my wire antennas from the parts bin, but
honestly, I've grown fat and lazy.
This Reflector is one of the best reasons to own an Elecraft product
besides superior engineering and execution. The brain trust
I have used duel band dipoles too but found them harder to get set up
properly.
That's because they're fighting each other! [duel vs. dual, :-)]
I use a six-band resonant dipole for my (portable) operation. That's the
best thing I've found in 33 years of experimenting. But my version works
I have found the easiest single antenna to utilize is the OCF - it is
coax fed, making easy routing of the feedline. The K3's ATU handles it
fine (as does my TS-480 SAT).
Dimensions for the version I use: 88' on one leg and 44 ' on the other
leg. For a center insulator/balun I use the
I guess the subject line says it all - I would like to hear my audio
feedback in the headphones but not through the speaker, so as to not create
distortion/feedback, I wonder if it could be done in the firmware, if it's
possible, I'd appreciate an entry on the todo list :)
Any
the big difference with using the VE7CC pgm to access the VE7CC cluster or
using DXLabs spot collector to access the VE7CC cluster
With VECC pgm
if you click on a spot which has a split info entered in the comment field
in VE7CC the K3 will change VFO A to the spotted frequency
but does not
On Fri, Mar 9, 2012 at 3:50 PM, Bill b...@w2blc.net wrote:
I have found the easiest single antenna to utilize is the OCF...
The OCF has advantages and can work very well. I have had good success
with several versions, and in fact published an article in QST about
one such setup
Never had any reason to wonder if my MFJ-998 has more than normal loss. It
hasn't let any smoke out of the cabinet yet! I use to run a Drake L-7 thru
it, but now use the KPA500 all the time and have retired the Drake.
/Most of the MFJ tuners tend to rank pretty low in that respect./
Dave, I'd
I do not have a G5RV, but I do have a Mystery Antenna that is
similar. They both have a stub line made of ladder line. The problem
with the ladder line is that it radiates RF so you must must must get it
away from anything susceptible to RF. Mine is not far enough away from
the shack and I
When I got on the air at this QTH in 2006 I installed a Carolina Windom from
Radio Works. It is about 40 feet high and fed with a short piece of RG8X. I
thought it a great antenna and worked some contests and a lot of DX. Later, I
installed a 30 foot vertical with one radial and found it
I didn't mention the RF on the feedline, as I am in the habit of choking
all feedlines coming into the house.
Easy: 10 turns of coax 6 or 8 inches diameter and cable tied just
outside the wall - prior to the grounding panels. Use one of the flex
type cables and it will be easy.
Bill W2BLC
I wonder how those that claim a certain efficiency for a MFJ-998 or any other
antenna matching device are measuring the output power. No watt meter that I
know including the famous and antique Bird can measure power with any degree of
accuracy unless the load is very near the nominal value
I wonder if it could be done in the firmware, if it's possible, I'd
appreciate an entry on the todo list :)
Headphone and Speaker audio share a common source (the same digital to
analog converter). There is no a separate audio feed for headphone and
speakers (K3 Schematics package, pg 28 and
All,
I apologize for asking this but simply cannot find it in the manual or
figure it out.
How does one transfer sound from VFO A in left ear and VFO B in right ear to
both ears (Heil Pro-Set)?
I enjoy using one ear on each when using two VFO's, but would like to hear
same in both ears
If you have access to some space (I hide my antenna in the HOA 'common area'
trees, no one looks up or even uses that area), then what I use may be of
interest to you.
A 340' dipole (170' per leg, ~5/8 wave on 80 meters) fed with window line
through a DX engineering common mode choke (coax to the
These aren't dumb questions.
The K3 configuration menu has an L-MIX-R item that has a bunch of choices.
Play with the choices a bit. You'll want to turn the sub receiver on first.
73 de Dick, K6KR
-Original Message-
From: elecraft-boun...@mailman.qth.net
On 3/9/2012 7:59 AM, Mike wrote:
Have you an opinion on the iMic?
Know nothing about it -- I live in the PC world.
73, Jim K9YC
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
On 3/9/2012 1:50 PM, Bill wrote:
I have found the easiest single antenna to utilize is the OCF
Off center fed antennas are a recipe for noise pickup on the feedline.
While a good common mode choke can help, off-center feed can also burn
up a common mode choke if you're running much power.
On Fri, Mar 9, 2012 at 4:24 PM, WILLIS COOKE wrco...@yahoo.com wrote:
I wonder how those that claim a certain efficiency for a MFJ-998 or any other
antenna matching device are measuring the output power
Cookie, the ARRL labs have some way of doing this, but in their
reviews of
I can think of a few ways to investigate a tuner's efficiency. Google
searching can probably give more.
You can read the inductor and capacitor values selected by the 998 and then
do a circuit simulation of the L network and determine current through the
inductors to find their ohmic losses.
On 3/9/2012 2:14 PM, WILLIS COOKE wrote:
When I got on the air at this QTH in 2006 I installed a Carolina
Windom from Radio Works. It is about 40 feet high and fed with a
short piece of RG8X. I thought it a great antenna and worked some
contests and a lot of DX. Later, I installed a 30 foot
Well dang! Thanks, Jim.
73, Mike NF4L
On 3/9/2012 5:52 PM, Jim Brown wrote:
On 3/9/2012 7:59 AM, Mike wrote:
Have you an opinion on the iMic?
Know nothing about it -- I live in the PC world.
73, Jim K9YC
__
Elecraft mailing list
On 3/9/2012 2:24 PM, WILLIS COOKE wrote:
If you need a tuner, your
antenna does not meet this criteria so, what are you using to form
your opinion?
Weigh the tuner, then transmit continuously, measure the temperature
rise, and when it's stable, calculate the heat loss [something to do
with
Works for both Jim. Windows has the drivers. Is very nice.
73, tom
On 3/9/2012 5:52 PM, Jim Brown wrote:
On 3/9/2012 7:59 AM, Mike wrote:
Have you an opinion on the iMic?
Know nothing about it -- I live in the PC world.
73, Jim K9YC
Joe,
On 9 March 2012 22:29, Joe Subich, W4TV li...@subich.com wrote:
]What Wayne would need to do is mute the speaker (shutdown the speaker
amplifier) during transmit - and only for voice (AM, FM, SSB) modes.
However, if you notice the shutdown behavior of the speaker amplifier
it does not
This probably shows my gross lack of knowledge of the physics involved
here, but what does the weight of the tuner have to do with its efficiency?
73,
--Ian
Ian Kahn, KM4IK
Roswell, GA
km4ik@gmail.com
K3 #281, P3 #688
On 3/9/2012 6:14 PM, Fred Jensen wrote:
On 3/9/2012 2:24 PM, WILLIS
All,
If you haven't already seen it, check out Elecraft's new home page. It
looks really sharp and professional. In my opinion, a huge improvement
over what it looked like at about 8:30 AM ET this morning.
73,
-- Ian
Ian Kahn, KM4IK
Roswell, GA
km4ik@gmail.com
K3 #281, P3 #688
It is indeed a fine looking web page.
Just for fun I looked up the Elecraft site during the months before I
purchased my K2. My how time flies :) Great job guys I think you have
come a very long way in the last 11 years. Thank you!
The July 2001 site is located here:
Just received an email from Vicky at Elecraft asking for confirmation of
my P3SVGA order which will ship in the next 3-5 days
Let the good times roll, now wating for the KAT500!!
vry 73 to all
Peter ZL1PWD
Elecraft K Line
LL+64 09 4370956
Cell+64 0221041630
The home page is looking great, but the Frames are gone, but the
horizontal Link bar has the same information as the left column used to
have.
The problem is that once you click on any link to go to somewhere else
on the site, you have to click the back button to get back to the home
page in
I'll take a guess...
You have to know the mass to find the amount of energy converted into heat.
Like Ohm's law, given two values, you can figure out the third. If you know
the mass and know the temperature change, you can calculate the energy.
Ok Fred, am I close?
Rick wa6nhc
-Original
Well said Jim,
There is no way to obtain equal and opposite currents on the feedline
with an offset fed antenna - they are a sure recipe for
RF-in-the-shack. As much acclaim as the Carolina Windom gets, that
fact is still true, one just cannot run high power with such an antenna
- at low
I purchased a used K3 a few weeks ago and the small knobs (shift width) seem
to be a little loose on the shafts. I see that they are push ons. Has
anyone taken one off to check the spring? I can only surmise that I have to
pull them quite firmly to get them to come off? Any help out there?
Good catch. I was there this morning so this happened today.
Looks great. The link to the QSL cards is missing though.
Rick wa6nhc
-Original Message-
From: Ian Kahn - Ham
Sent: Friday, March 09, 2012 3:34 PM
All,
If you haven't already seen it, check out Elecraft's new home page.
Ian,
Weight comes into play in two ways. A heavier tuner will likely have less
loss due to less resistive loss by using larger diameter wire etc. But that
s not the issue in measuring the loss.
As Fred mentions below, power fed into a tuner goes two places. One is out
to the load (antenna)
Larry,
Are they really loose, or is the loose sensation an artifact of them
having a pushbutton function as well.
Is there a chance that the original builder damaged the springs when he
installed the knobs on your K3?
A steady pull will normally remove those knobs.
73,
Don W3FPR
On 3/9/2012
All,
I apologize for asking this but simply cannot find it in the manual or
figure it out.
How does one transfer sound from VFO A in left ear and VFO B in right ear to
both ears (Heil Pro-Set)?
I enjoy using one ear on each when using two VFO's, but would like to hear
same in both ears
I'd echo remarks of Keith, AG6AZ. I have used resonant dipoles,
folded dipoles, inverted-V dipoles, sloper dipoles, etc. for years
(since 1958). One cannot replace the inherent simplicity of a
half-wave resonant antenna.
Currently, I have a dual-band 80/40m inverted-V (40 foot in center
They do :-) Another way to feed dipoles cut for different bands using a
single feeder which I find to be less fussy, is to configure the dipoles as
Coupled Resonators, with the feeder connected to only one of the dipoles -
usually to the dipole cut for the lowest frequency band. The dipole
I just recieved the replacement parts for my K3.
Thank you ELECRAFT.
The two 6 pin blocks are gold plated but the
20 pin socket and 26 pin socket are tin plated.
Are these the correct parts for repair?
John
__
Elecraft mailing list
Home:
While in RTTY (Data A) I have hte DUAL PB turned on. I am seeing
where VFO B is an alternating BW .25 and BW .50 and then the VFO B
frequency. As BW changes from .25 to .50 the twin band width
indicators change accordingly.
Is this normal?
Tom
KQ5S
Looks like the P3-SVGA boards are shipping as shown on the schedule page.
Got my notice today, time to warm up the monitor!
73,
Roger Gagos, K6EQ
Escondido, CA
__
Elecraft mailing list
Home:
Hi Tony,
When you are using your SUB RX you can of course vary which ear gives you
which VFO (or both) using the configuration variable described by another
responder. It's CONFIG:L-MIX-R but it's kind of out of alphabetical order in
the configuration file. It's with the M's.
You also have
I should have said I am using FSK D.
Tom
KQ5S
On Sat, Mar 10, 2012 at 12:39 AM, Tom nineb...@gmail.com wrote:
While in RTTY (Data A) I have hte DUAL PB turned on. I am seeing
where VFO B is an alternating BW .25 and BW .50 and then the VFO B
frequency. As BW changes from .25 to .50 the
On 3/8/2012 10:26 PM, wb6r...@mac.com wrote:
Hi Jim - I've been using a Griffin iMic for years. Reliable.
Inexpensive. FYI.
Just looked at it. Looks good, and it might be the same as this one,
which W0YK swears by. He takes them to P40X for his record-breaking
RTTY contest efforts. $29. I
Griffin iMIC is a standard USB Audio Class device. Most modern
operating systems support USB Audio Class devices with standard
drivers. The iMic is reasonably well built for a commodity device.
Nothing special positive or negative ...
73,
... Joe, W4TV
On 3/9/2012 6:13 PM, Tom Azlin
QST had an article a while back comparing tuners, MFJ, Palomar, Drake and
several others if I remember correctly.
They had a chart showing the loss per band per each tuner.
They included the old Johnson Viking matchbox in their ranking too. The old
Johnson was right up there
in the top
Hi Tom,
My lower readout is stable, reporting the bandwidth as it was set and not
modifying it then changing to VFO B frequency. I would suspect that your PC
software program is asserting a command. Try it without your software
running or with your RS232 disconnected.
73,
Mike K2MK
KQ5S wrote
The only thing that shows gross lack of knowledge is not asking the
question for which you need the answer. [Cal Poly Physics Professor
whose name escapes me but whose class I remember as a personal struggle].
To know the net rate of heat input [i.e. generation within the tuner]
from the
On Fri, Mar 9, 2012 at 5:30 PM, Ian Kahn - Ham km4ik@gmail.com wrote:
This probably shows my gross lack of knowledge of the physics involved
here, but what does the weight of the tuner have to do with its efficiency...
=
Ian, the idea was to measure the power soaked up by the
haven't noticed that effect on my K3 and actually when just tested it
now I don't hear anything other than a very faint click when the
speaker switches off (I have PF2 programmed to toggle SPKR+PH). Maybe
it's only on some K3's?
Toggle SPKR+PH with audio (e.g. WWV) at normal listening level.
It is not changing when going to VFO B. I stay on VFO A and am
getting the alternating BW .25 and BW.50 where the VFO B readout is.
Tom
KQ5S
On Fri, Mar 9, 2012 at 7:59 PM, Mike K2MK k...@comcast.net wrote:
Hi Tom,
My lower readout is stable, reporting the bandwidth as it was set and not
THANKS for the new web site home page etc. It is so much easier to navigate.
Best Regards to all at Elecraft.
Ron WB4OOA
K3 604 and 6175 P3 88 KPA500 127
__
Elecraft mailing list
Home:
The internal contact points on the socket are actually gold. Just the
external legs that solder into the pcb are tin.
73,
Eric
---
www.elecraft.com
On 3/9/2012 4:37 PM, John wrote:
I just recieved the replacement parts for my K3.
Thank you ELECRAFT.
The two 6 pin blocks are gold plated but
The QSL card link is still there with the links for 'Other
Manufacturers' at the bottom of the main webpage.
73,
Eric
---
www.elecraft.com
On 3/9/2012 4:14 PM, Rick Bates wrote:
Good catch. I was there this morning so this happened today.
Looks great. The link to the QSL cards is missing
This is a work in progress and we will be adding the top header with
navigation to all the pages over time. We wanted to get the new main
page up asap this week.
for now use the back key or click on the home page link at the bottom of
most pages.
73,
Eric
---
www.elecraft.com
On 3/9/2012
The internal contact points on the socket are actually gold. Just the
external legs that solder into the pcb are tin.
73,
Eric
Thanks Eric.
73.
John.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
I've been making tuner loss measurements for an upcoming QST review of some
remote autotuners. My set-up is similar to the ARRL lab, but I've made a
few changes. I have two different load boxes. One is a resistive load box
that lets me measure loss with loads from 12-800 ohms. The second
OCF antennas, under miscellaneous names, have been working fine, just fine,
just about as long as radio.
We just have 50 ohm coax and SWR meters on the brain, and have a terrible
time seeing outside the rather narrow 50 ohm coax/low SWR box. And we're
boxing ourselves in further with single-Z
On Fri, Mar 9, 2012 at 7:48 PM, Guy Olinger K2AV olin...@bellsouth.net wrote:
OCF antennas, under miscellaneous names, have been working fine...
=
Of course. Please note that the Elecraft product line was originally
designed to be used with an end-fed wire (the ultimate in off-center
Another style 80/40m dipole was made using a 3-inch spacer of nylon
rope to disconnect the outer part the 80m dipole from the center 40m
dipole. A plain old alligator clip was used switch bands. Unclip
for 40m and reconnect for 80m...Makes a great portable antenna for two
bands (a lot
All,
As I said, question shows my lack of knowledge of physics. :-)
Thanks, everyone, for the explanations!
73,
--Ian
Ian Kahn, KM4IK
Roswell, GA
km4ik@gmail.com
K3 #281, P3 #688
On 3/9/2012 6:30 PM, Ian Kahn - Ham wrote:
This probably shows my gross lack of knowledge of the physics
Bob,
One can construct a link coupled tuner that will have even greater
efficiency than the venerable Johnson Matchbox. It will have plug-in
coils, and the antenna will connect to taps on the coil rather than
using a differential capacitor - that tuner will have a greater matching
range than
I am rebuilding the power cord from my RM35M to the K3.
Questions.
1. Do you need fuses to be in both the positive and negative lead? Or, since
I
am a fixed station, can I get away with one fuse in the positive lead?
Currently, I have both leads fused.
2. What length should the
OK Guys, I have a Physics Degree too, but realistically, if the tuner uses real
coils and air capacitors like the Matchbox it is really efficient. If it uses
link coupling like we did in olden days it is probably a scotch (technical term
meaning a little bit) better than the more common T
1 - 100 of 121 matches
Mail list logo
