[Elecraft] Elecraft CW Net Announcement

[Kevin Rock]

Good Evening,
   It was very windy here yesterday.  Then it started raining quite heavily.  
But, by evening the wind had died down and the rain had changed to snow.  There 
has been continuous snow cover here for over a month.  Pat used to tell me of 
snowy winters up here but I did not believe her until we had an especially long 
winter.  The snow was about seven feet deep at one point when the snow did not 
stop falling for two weeks.
   It looks like band conditions are slightly better this week plus we have a 
sunspot acting up with two CMEs in the last few days.  Maybe by spring the 
bands will be back again.  At that point I can move the nets later in the day 
and have a longer break between them.  

Please join us tomorrow evening.
 
1) Hail signs  (first letter or two of the suffix of your call)
2) NCS help (as well as QSP/QNP  help)
 
Sunday 2300z (Sunday 3 PM PST) 14050 kHz
Monday 0100z (Sunday 5 PM PST)  7045 kHz
 
   Stay warm,
  Kevin.  KD5ONS
 
ecn.visionseer.com  for net details
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[Elecraft] K2 Microphone Jack Grounding - Is there a Pin 1 Issue?

[Mike Walkington]

Hi All,

Thanks for getting back to me. I vaguely remember there being some
discussion about a "pin 1
" issue. Should the mic jack be grounded to the pcb or to the  case? Does it
matter?  How is the microphone jack grounded on the K3?

Mike
VK1KCK
K2 #2599

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Re: [Elecraft] Power off at Elecraft HQ - Power off at Elecraft - Aptos

[Eric Swartz WA6HHQ - Elecraft]

Yes, it returned very late last night. :-) 
73, Eric  WA6HHQ


_..._


Don Ehrlich wrote:

Anybody know if  power is back on at the big-E?


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RE: [Elecraft] dipole antenna efficiency

[Ron D'Eau Claire]

John wrote:
b) The antenna will convert a portion of the applied AC voltage and current
into heat energy as a result of resistive losses in the antenna structure.

Unless steel or nichrome wire is used, or electrically poor connections
exist in the antenna structure, losses due to (b) will be low.

-

That's not correct John, and it's the Achilles heel in all small antennas.
We simply do not have conductors that will handle RF with anything like the
efficiency they will handle DC or low frequency AC. That's because all the
RF current 'crowds' onto the very surface of a conductor. 

As we make an antenna physically smaller, the impedance drops. As the
impedance drops, the RF currents and resistive losses go up. Even silver or
gold - the best electrical conductors known - are not nearly good enough for
the sorts of currents we see in small antennas. 

As an antenna is made shorter the resistive losses far exceed any other
losses in the system. Of course those resistive losses occur in the matching
network too. It's not just the antenna itself that converts RF into heat
better than it makes electromagnetic waves. 

Resistive losses are also the primary source of losses in coaxial feed lines
working at high SWRs, for example. If we had better conductors, we'd not
care about running 100 feet of 50 ohm coax at high SWR. Even with excellent
conductors, we know that coax used that way may consume virtually all of the
RF and convert it into heat.

To get around those losses we need a room-temperature RF "superconductor",
and one hasn't been invented yet. 

As much as we might like, Maxwell was right. His laws still stand. 

Ron AC7AC


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Re: [Elecraft] dipole antenna efficiency

[WILLIS COOKE]

This thread started with a person trying to find an
antenna that would work reasonably well that does not
take up much space.  While in theory, you are correct
the practical aspects of making a very small antenna
for low frequencies lead to impossible parameters. 
The radiation resistance of a dipole 2 meters long for
3.8 mHz is about 0.134 ohms.  Since placing such an
antenna in free space would require the assistance of
NASA we need to assume that it is a bit lower.  If we
assume that the person cannot or does not want to
erect a tall mast, probably a height of about 3 meters
would be reasonable to expect.  This would make for a
radiation resistance of about 0.006 ohms and need. 
The capacitive reactance will require 397 microhenrys
to cancel out which in turn will require a coil 4
inches in diameter and about 24 inches long with 160
turns (about 168 feet of wire).  Then you would need
an 8333/1 balun transformer with its associated wire
resistance.  Clearly not a very practical way to make
an antenna that would radiate straight up and would
have a bandwidth less than required for a single
sideband signal.  Now if you have theoretical
inductors and capacitors and  no resistance wire
available to you, maybe you can do better.
(Calculations by EZNEC)

A more practical solution for a ham that cannot afford
or is prohibited from putting up a large antenna is a
mobile antenna attached to a porch rail or rain gutter
or whatever metal that is available.  Better is the
common trap vertical.  If a person has a bit of space
and can erect a 30 or 40 foot mast all sort of
possibilities present themselves.

This has certainly been an interesting thread and can
go on forever if we choose.  Hams have been designing,
trying and debating antenna designs since Marconi
started it all and I don't think it will end soon.

73 to all, Cookie, K5EWJ

   
--- John Magliacane <[EMAIL PROTECTED]> wrote:

> When it comes to antenna efficiency, it is important
> to understand
> that when RF energy is applied to any antenna, three
> things will
> invariably happen:

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[Elecraft] Heil Pro-Set Plus with Icom iC Mic

[John Reilly]

I have a K2 (K3 on order) and Chip Margelli, Heil, recommended this 
combination. I've got the headset, but not the mic connector adaptor, so 
haven't tried it yet.


Question: Has anyone tried this combination? If so, what K2 settings are 
you using for SSBA (gain) and SSBC (compression)?


Thanks,
 - 73, John, W0JFR
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Re: [Elecraft] Test Post

[R. Kevin Stover]

Seems to have gotten rid of the gremlin.


On Sat, 5 Jan 2008 20:39:40 -0600
"Stan Rife" <[EMAIL PROTECTED]> wrote:

>   I unsubscribed and re-subscribed to see if it would fix my posting
> problem. Test.



-- 
R. Kevin Stover <[EMAIL PROTECTED]>
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[Elecraft] Test Post

[Stan Rife]

I unsubscribed and re-subscribed to see if it would fix my posting
problem. Test.


Stan Rife
W5EWA
Houston, TX
K2 S/N 4216

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Re: [Elecraft] dipole antenna efficiency

[Kurt Pawlikowski]

David,

   Actually, if you follow some of the other related articles Lloyd
wrote, the effect of this design seems to approximate a full wave dipole
with a device about 2% of a wave length. That is, a 40 meter antenna
about 3 feel long. He also purports a kind of "folded" antenna for 80
meters at about the same length. Wow. The possibility of a 6 foot long
160 meter antenna that works. I am definitely intrigued!

   Regards,

   kurtt

   Kurt Pawlikowski, AKA WB9FMC
   The Pinrod Corporation
   [EMAIL PROTECTED]
   (773) 284-9500
   http://pinrod.com

David Cutter wrote:
Ooops.  I must apologise for my mistake:  I've read the article in 
more detail and Lloyd is not feeding a small antenna, he is using the 
"feeder" as the antenna by deliberately unbalancing it with a terminal 
unit to obtain maximum current at the far end of the feeder.  
Presumably this would then be elevated to a convenient point for 
maximum effect.


David
G3UNA

Here is an interesting antenna made by Lloyd Butler VK5BR.  It uses 
open wire feeder to a VERY small antenna.


http://users.tpg.com.au/users/ldbutler/ReverseFeedTopLoading.htm

David
G3UNA


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[Elecraft] Power off at Elecraft HQ - Power off at Elecraft - Aptos

[Don Ehrlich]

Anybody know if  power is back on at the big-E?

Don


We are without power today in Aptos due to the major winter storm hitting 
CA..


We're down to one working phone line and our computers are off line. (I'm 
sending this from my cell phone.) We'll probably be down the rest of the 
day.


Our web page and on-line order page are OK as they are hosted at a Silicon 
Valley server farm. I hope the winds die down soon!


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Re: [Elecraft] dipole antenna efficiency

[John Magliacane]

When it comes to antenna efficiency, it is important to understand
that when RF energy is applied to any antenna, three things will
invariably happen:

a) The antenna will convert a portion of the applied AC voltage
and current into electromagnetic energy and radiate it into space.

b) The antenna will convert a portion of the applied AC voltage
and current into heat energy as a result of resistive losses in the
antenna structure.

c) The antenna will reflect a portion of the applied AC voltage and
current back to the transmitter as a result of an impedance mismatch
between the antenna and that of the source.

Unless steel or nichrome wire is used, or electrically poor
connections exist in the antenna structure, losses due to (b)
will be low.

Effects of (c) can be reduced or eliminated by using intelligent,
low-loss impedance matching techniques and low-loss feedline.
(Technically, reflected power isn't a "loss" per se, since
energy isn't dissipated when a reflection occurs.)

That leaves us with (a), the desired outcome of applying RF energy to
an antenna.  Since losses due to (b) and (c) are typically low and/or
easily corrected, it is very difficult NOT to achieve high antenna
system efficiency.

Shortening the physical length of an antenna below that of a
half-wavelength DOES NOT reduce its efficiency provided the
necessary efforts to minimize resistive losses in the antenna
structure and the impedance matching networks are made.

That last statement is so important and so often misunderstood,
it bears repeating:

Shortening the physical length of an antenna below that of a
half-wavelength DOES NOT reduce its efficiency provided the
necessary efforts to minimize resistive losses in the antenna
structure and the impedance matching networks are made.

We could make an 80-meter dipole just one foot long and realize
high efficiency if the proper low-loss impedance matching techniques
are employed.

If we were to apply 100 watts to such an antenna, and we get zero
watts reflected back, and the antenna and matching networks remain
cool, then 100 watts of RF energy is being radiated from that one
foot dipole -- the same as if a full-sized dipole were used.

The penalties for using physically shortened antennas are:

(a) Decreased operating bandwidth
(b) Decreased directivity
(c) Somewhat difficult impedance matching

If we're wiling to adjust our impedance matching networks when we
QSY, then (a) isn't much of a problem since our signals are seldom
more than a few kHz wide, anyway.

Dipoles have 2.14 dB "gain" over isotropic radiators.  As we make
our dipole shorter and shorter (and keep resonating and impedance
matching it in the process), its directivity (b) approaches that
of an isotropic radiator.  If our radiating structure and impedance
matching networks are lossless, an extremely short dipole may be as
much as 2 dB weaker than the signal produced by a half-wave dipole
in the broadside direction.  That's less than half an S-unit!

So, the key to success lies in (c), the impedance matching network.
It needs to have extremely low loss, be capable of matching a very
wide range of impedances, and (unless you're rock-bound) be agile
so the antenna can be operated across a broad range of frequencies.
Ideally, it should be placed at the antenna feedpoint, itself.


73, de John, KD2BD


Visit John on the Web at:

http://kd2bd.ham.org/
.
.
.
.


  

Never miss a thing.  Make Yahoo your home page. 
http://www.yahoo.com/r/hs
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Re: [Elecraft] orion agc vs K3

[Tom Childers, N5GE]

On Sat, 5 Jan 2008 10:01:04 -0600, you sent:

>From: Koppendorfer Klaus [EMAIL PROTECTED]
>>i had the chance to do an A/B comparing
>>between Orion-I and K3 this evening
>[snip]
>>I tried all possible settings for agc on orion.. but could not find
>>a situation where the raugh noise between cw-signals was fine
>>so the only way was to switch off agc

You cannot turn the Orion II AGC off.  I found this little tidbit of information
while trying to peak a noise generator on the Orion II here.  If you watch the
ac voltage on the phone jack or speaker you will see that it never changes with
the AGC OFF.  You will also notice that on an Orion II, when you set the AGC to
OFF the S-Meter still deflects with the signal, indicating that in fact, the AGC
is NOT turned off, it has merely been set to a decay rate of 1000 db per second.
Otherwise it functions as when in the other positions. 

>>and reduce rf-gain - then we found
>>a setting where orion sounds near k3 (by the way K2 sounds very fine under
>>these conds)
>>
>>!!! these was seen only on 80meter evening with heavy European qrm !!!
[snip]

Tom, N5GE - SWOT 3537 - Grid EM12jq

They that can give up essential liberty
to obtain a little temporary safety
deserve neither liberty nor safety.

http://www.n5ge.com
http://www.eQSL.cc/Member.cfm?N5GE

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[Elecraft] Re: my settings, so far -> Winkeyer USB and Elecraft K2

[John Huffman]

Steve, Mike -

I set the Winkey to Ratio 45, Weight 65, Sample (Paddle Switchpoint) 35. 
 Thanks to Mike for the Sample setting.  I have not yet tried the setup 
Steve is using for testing, but this sounds and feels pretty good to me.


73 de K1ESE
John

Steve Jackson wrote:

Howdy John ...

Here's what I have done so far to make the Winkeyer 'emulate' the feel of the 
K2 internal keyer

1.  I stored just my call in the K2 memory # 3, and set the speed to 25WPM 
indicated
2.  I stored the same call in the Winkeyer memory #1, and set the speed to 26 
WPM indicated
3.  I fiddled with the Winkeyer settings so that selecting either memory 
'sounds' identical, or very nearly so

First thing I had to do was to add the 'pipe' character <|> between the letters 
of my call, on the Winkeyer.
Then, I set the ratio to 55, and weight to 65.  I am using Iambic B mode, if 
that matters.

I can switch between the K2 keyer and the Winkeyer now, in either memory mode or paddle 
operation, and they respond more or less identically.  I do still hear a difference, as 
if the K2 is "snappier" but, that's probably the mojo talking.  The Winkeyer is 
nice and even is also PIC-based like the K2, but I don't think it has any mojo.

Or, I perceive it as so, anyway.  Perception can be reality!  I think at this 
point the matter may be subjectivity-limited.

;-)

Now, where is that FJ listening?

73  Steve KZ1X/4
continually improving the World's Most Experienced Elecraft







  

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Re: [Elecraft] REPRISE: As good as it gets...for now?

[Don Wilhelm]

Rod,

If you keep it dry, electronics will store nicely for a good long time.  
Temperature is not a consideration as long as condensation is 
controlled.  If it is at a temperature extreme when put back into 
service, a bit of time to acclimate to ambient before applying power is 
prudent.


Remove any batteries before storing - that has been learned from 
experience :-) , even though I know better, it sometimes happens - 
reminders are good IMHO.


73,
Don W3FPR

[EMAIL PROTECTED] wrote:

Well,

For me yes.

I'm going to put everything in storage for a few years until solar
activity picks up. Pretty much everything is boxed up and stored in
the garage already. But I'm curious about the best way to store my K2
and a few other electronic items for the long term. I thinking a big
zip-lock bag, a little desiccant and a store in the house to minimize
temp/humidity cycling.

Ideas for long-term storage only please--I have no interest or desire
to spend money on station improvements to make operating more
successful/interesting.
--
73, Rod Ai7NN
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[Elecraft] REPRISE: As good as it gets...for now?

[rcerkon]

Well,

For me yes.

I'm going to put everything in storage for a few years until solar
activity picks up. Pretty much everything is boxed up and stored in
the garage already. But I'm curious about the best way to store my K2
and a few other electronic items for the long term. I thinking a big
zip-lock bag, a little desiccant and a store in the house to minimize
temp/humidity cycling.

Ideas for long-term storage only please--I have no interest or desire
to spend money on station improvements to make operating more
successful/interesting.
--
73, Rod Ai7NN
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[Elecraft] K1 # 2476 alive and well

[WA7CS]

K1 #2476 just completed it's first QSO.  Received a 569 on 20 meters from 
WA6UIJ's long wire antenna 10 feet off the ground.  Not bad for QRP from a
ground mounted vertical.

Yee haw!
-- 
View this message in context: 
http://www.nabble.com/K1---2476-alive-and-well-tp14641449p14641449.html
Sent from the Elecraft mailing list archive at Nabble.com.

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[Elecraft] Mac OSX K3 Utility released

[Gary Tuck]

Eric and David-thank you very much !!

This is going to make our lives so much easier.

73, Gary W7TEA
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Re: [Elecraft] Mac OSX K3 Utility released

[DaleJ]

Thankyou very much to all.  I will use it when I get my K3. 

Dale, K9VUJ



Eric Swartz - WA6HHQ, Elecraft wrote:
> 
> We have just released the Mac OSX version of the K3 Utility program for 
> downloading K3 firmware. 
> 
> A big thank you to it author, David Fleming, W4SMT, who put in a huge 
> effort to get it done. Thanks David!
> 
> It can be found at:
> http://www.elecraft.com/K3/k3_software.htm
> 
> 73, Eric  WA6HHQ
> 
> (And the power is back on in Aptos. :-)
> 
> 
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> 
> 

-- 
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Re: [Elecraft] Mac OSX K3 Utility released

[George Cortez Jr]

THANK YOU!
I downloaded it to get my hopes up for delivery of my rig. Maybe February?

George NE2I




Eric Swartz - WA6HHQ, Elecraft wrote:
We have just released the Mac OSX version of the K3 Utility program 
for downloading K3 firmware.
A big thank you to it author, David Fleming, W4SMT, who put in a huge 
effort to get it done. Thanks David!


It can be found at:
http://www.elecraft.com/K3/k3_software.htm

73, Eric  WA6HHQ

(And the power is back on in Aptos. :-)


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Re: [Elecraft] Q regarding DSP filtering [K3]

[Vic K2VCO]

DaleJ wrote:


Are the DSP filters within the agc loop?  I can't seem to find anything about
this in the manual.  


Yes, the main AGC loop includes the DSP filters. But there is also a 
'hardware' AGC that kicks in on very strong (S9+30) signals that are 
within the crystal passband but outside of the DSP passband. This 
hardware AGC acts before the DSP (but usually does not act at all).


I believe the above to be essentially true but maybe a bit oversimplified.
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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[Elecraft] Q regarding DSP filtering

[DaleJ]

Are the DSP filters within the agc loop?  I can't seem to find anything about
this in the manual.  

Dale j. 
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[Elecraft] K3 Transmit CW waveform

[k2av]

>From the K3 setup in manual pdf posted on the website:

"Rotate VFO A to select a CW transmit filter
(2.7 or 2.8 kHz). Note: Key clicks may result if
a narrower filter is selected for CW transmit."

This seems counter-intuitive. The intuitive guess would be a narrower filter
simply reduces the bandwidth of the transmitted signal, including making
leading and trailing edges "softer" and less liable to "click".  How does a
narrow filter generate clicks?

73, Guy
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[Elecraft] my settings, so far -> Winkeyer USB and Elecraft K2

[Steve Jackson]

Howdy John ...

Here's what I have done so far to make the Winkeyer 'emulate' the feel of the 
K2 internal keyer

1.  I stored just my call in the K2 memory # 3, and set the speed to 25WPM 
indicated
2.  I stored the same call in the Winkeyer memory #1, and set the speed to 26 
WPM indicated
3.  I fiddled with the Winkeyer settings so that selecting either memory 
'sounds' identical, or very nearly so

First thing I had to do was to add the 'pipe' character <|> between the letters 
of my call, on the Winkeyer.
Then, I set the ratio to 55, and weight to 65.  I am using Iambic B mode, if 
that matters.

I can switch between the K2 keyer and the Winkeyer now, in either memory mode 
or paddle operation, and they respond more or less identically.  I do still 
hear a difference, as if the K2 is "snappier" but, that's probably the mojo 
talking.  The Winkeyer is nice and even is also PIC-based like the K2, but I 
don't think it has any mojo.

Or, I perceive it as so, anyway.  Perception can be reality!  I think at this 
point the matter may be subjectivity-limited.

;-)

Now, where is that FJ listening?

73  Steve KZ1X/4
continually improving the World's Most Experienced Elecraft







  

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Re: [Elecraft] K3 serial numbers

[G3SJJ]

Doug, thanks and I am working on the same theory. I have a particular 
figure in my mind (not for discussion) for the 1st Prodn Run volume 
which seems to be tracking reasonably accurately so far and which is why 
I was trying to find some of the serial numbers that may have already 
been released. I am in that run with 50% deposit paid so reckon I can 
guess my serial number to within about 20 or so depending on, as you 
say, the number of 1st run orders without deposits.  Obviously the wx 
situation in W6 land is going to affect the shipping rates from now.


I know you are a contester of renown, so will be with me on the 
importance of planning. Having already had several plans blown away due 
to lack of shipment over the last 6 months I just want to be sure I get 
the next ones right. Guess I had better email my friends and see if I 
can suitably disrupt their weekend!


73 Chris G3SJJ


DOUGLAS ZWIEBEL wrote:

Chris, et al:

Before you get too locked into a plan, remember that the orders being
shipped from Prod Run #1 (so far) are for those "with deposits."  One
could reasonably infer that after those "with" deposits are shipped,
they will circle back to those w/o deposits, but still within Prod Run
#1 (based on date of order).  If that is the case, they will be
restarting with orders placed at Visalia w/o deposit (if any).

I am guessing that many of the apparently unaccounted for serial
numbers on the Wiki are those held by Prod Run #1 buyers who did NOT
include a deposit.  PLEASE be sure to note my use of the word
GUESSING.  I do know for sure of some Prod Run #1 buyers who did not
include a deposit who have yet to be notified of shipment for their
order placed on date X while those who ordered WITH deposit on date
X+Y (Y being a positive integer) have heard from Elecraft with respect
to a ship date (in the very near future).

I sure hope you are correct, but I would not be surprised if your
projected time table is a bit too optimistic.

de Doug KR2Q
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[Elecraft] Mac OSX K3 Utility released

[Eric Swartz - WA6HHQ, Elecraft]

We have just released the Mac OSX version of the K3 Utility program for 
downloading K3 firmware. 

A big thank you to it author, David Fleming, W4SMT, who put in a huge 
effort to get it done. Thanks David!


It can be found at:
http://www.elecraft.com/K3/k3_software.htm

73, Eric  WA6HHQ

(And the power is back on in Aptos. :-)


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Re: [Elecraft] Winkeyer -> K2 ... weighting equality

[John Huffman]

Mike -

I'm using the standalone model.  Is paddle setpoint the same as 'Sample' 
in the WK2Mgr program?


73 de K1ESE
John

Mike Harris wrote:

Hi,

Interesting this.

I struggled for ages with trying to use mHAM CW Keyer (iambic B) until I 
dropped the paddle setpoint setting to 35.  After that it is almost the 
same as the K2 keyer.  Now when using the PC for contest logging I can 
drop to the paddles without making a total hash of what I'm trying to 
send.  I only use the mHAM a couple of times a year.


It will be interesting to see how the K2 and K3 internal keyers compare. 
The two CW instrument ports on the K3 could be the solution.


Regards,

Mike VP8NO


- Original Message - 
From: "Steve Jackson" <[EMAIL PROTECTED]>

To: 
Sent: Saturday, January 05, 2008 4:27 PM
Subject: [Elecraft] Winkeyer -> K2 ... weighting equality


| The internal keyer in my K2 seems to have a different 'weighting' (or 
something) compared to my new K1EL Winkeyer.

|
| I have been playing with the settings on the latter to try and make 
these two devices 'sound' the same.

|
| Frankly, after 8+ years, I've grown to like the K2's rhythm in this 
sense, but don't really care much for the UI of the built-in keyer when 
operating 'fixed.'  And, I needed PC control from several applications, 
anyway.  So I'm converting to the external gizmo.

|
| So far, the subtleties of the set-up have eluded me.  Anyone else do 
this yet, successfully?  Or am I just being very, um, picky?


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[Elecraft] K3 serial numbers

[DOUGLAS ZWIEBEL]

Chris, et al:

Before you get too locked into a plan, remember that the orders being
shipped from Prod Run #1 (so far) are for those "with deposits."  One
could reasonably infer that after those "with" deposits are shipped,
they will circle back to those w/o deposits, but still within Prod Run
#1 (based on date of order).  If that is the case, they will be
restarting with orders placed at Visalia w/o deposit (if any).

I am guessing that many of the apparently unaccounted for serial
numbers on the Wiki are those held by Prod Run #1 buyers who did NOT
include a deposit.  PLEASE be sure to note my use of the word
GUESSING.  I do know for sure of some Prod Run #1 buyers who did not
include a deposit who have yet to be notified of shipment for their
order placed on date X while those who ordered WITH deposit on date
X+Y (Y being a positive integer) have heard from Elecraft with respect
to a ship date (in the very near future).

I sure hope you are correct, but I would not be surprised if your
projected time table is a bit too optimistic.

de Doug KR2Q
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Re: [Elecraft] Winkeyer -> K2 ... weighting equality

[Mike Harris]

Hi,

Interesting this.

I struggled for ages with trying to use mHAM CW Keyer (iambic B) until I 
dropped the paddle setpoint setting to 35.  After that it is almost the 
same as the K2 keyer.  Now when using the PC for contest logging I can 
drop to the paddles without making a total hash of what I'm trying to 
send.  I only use the mHAM a couple of times a year.

It will be interesting to see how the K2 and K3 internal keyers compare. 
The two CW instrument ports on the K3 could be the solution.

Regards,

Mike VP8NO


- Original Message - 
From: "Steve Jackson" <[EMAIL PROTECTED]>
To: 
Sent: Saturday, January 05, 2008 4:27 PM
Subject: [Elecraft] Winkeyer -> K2 ... weighting equality


| The internal keyer in my K2 seems to have a different 'weighting' (or 
something) compared to my new K1EL Winkeyer.
|
| I have been playing with the settings on the latter to try and make 
these two devices 'sound' the same.
|
| Frankly, after 8+ years, I've grown to like the K2's rhythm in this 
sense, but don't really care much for the UI of the built-in keyer when 
operating 'fixed.'  And, I needed PC control from several applications, 
anyway.  So I'm converting to the external gizmo.
|
| So far, the subtleties of the set-up have eluded me.  Anyone else do 
this yet, successfully?  Or am I just being very, um, picky?

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Re: [Elecraft] dipole antenna efficiency

[David Yarnes]

- Original Message - 
From: <[EMAIL PROTECTED]>

To: <[EMAIL PROTECTED]>; 
Sent: Saturday, January 05, 2008 7:28 AM
Subject: Re: [Elecraft] dipole antenna efficiency


In a message dated 1/4/08 4:34:29 PM Eastern Standard Time, 
[EMAIL PROTECTED]

writes:



I've never understood the popularity of the G5RV.  It's
achieved a sort of "cult" following.


It's an ingenious compromise antenna for several bands, that's all.
Actually, just a ~102 foot dipole with a matching system that gives
"low" (but not unity!) SWR on several HF bands, so that a simple
ATU can match it.





Well, it depends on what your definition of "low" is.  The SWR is below 2:1 
on only 1 band--20 meters.  On others it goes to 5:1 or more on most of the 
non-WARC bands, and is almost unusable on 30  and 17 meters.  That is, 
unless you use a tuner!  Use of a tuner is really the big bone of contention 
usually.  This antenna has been described as not requiring a tuner, when it 
really does need one for the most part.  Even Varney anticipated that as he 
has discussed in several articles.


Another problem is that, although Varney described his antenna sufficiently, 
so many variations have been born (but still are called "G5RV's"), in an 
attempt to improve the SWR on one band or another, that the "real G5RV" 
isn't even described that much anymore.  SWR can be improved on various 
bands, but usually at the expense of the SWR on another band.  Cebik 
describes a pretty good variation on his website.  As I understand it, 
Varney's objective was primarily to add 20 meters to an antenna that would 
also load acceptably on 80.  But he never intended for this to be a 
"tunerless" antenna from 80 through 10 meters.


Dave W7AQK



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Re: [Elecraft] K2 #6324 is running

[David Wilburn]

Congrats.  I have had mine on the air for almost a year, and at 100w a
bit less than that.  It is my main rig, and am using it for ragchew, DX,
and contesting.  I continue to find new things to like about it.  I wish
you many joyful QSO's.
-  

David Wilburn
[EMAIL PROTECTED]
K4DGW
K2 S/N 5982


On Sat, 2008-01-05 at 02:46 -0800, Mike, W9QS wrote:
> W9QS

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Re: [Elecraft] Winkeyer -> K2 ... weighting equality

[Jack Brindle]

This is an interesting thread. I've gone the other way. I used a  
WB4VVF Accu-Keyer for a long time. After an overly-long layoff from  
HF, I started using the K2's keyer when I got my K2 (or at least  
tried). I just could not get used to the timing of the built-in  
keyer, finally deciding that my paddle was defective. When the YF  
(KB4TGE) gave me a K1EL USB keyer for Christmas last year things  
changed. The K1EL keyer feels right, and has rejuvenated my use of CW.


As you guys note, it is whatever you are used to...


On Jan 5, 2008, at 12:41 PM, John Huffman wrote:


Steve -

Only had my Winkey for 2 days, but am after the same goal.  I'll  
use the Winkey for both my K2 and my Ten Tec Omni VI (until my K3  
arrives in April).


I've gotten close by making the ratio 45 and the weight 60.  I  
messed with Sample, but ended up leaving it at 50.  I can tell when  
the timing is off what I'm used to, when 'R' or 'K' don't complete  
the last element and come out as 'A' and 'N'.


You might give that a try and let me know off list how it works for  
you.  If we work together we should improve our odds  :-)


73 de K1ESE
John

Steve Jackson wrote:
The internal keyer in my K2 seems to have a different  
'weighting' (or something) compared to my new K1EL Winkeyer.
I have been playing with the settings on the latter to try and  
make these two devices 'sound' the same.  Frankly, after 8+ years,  
I've grown to like the K2's rhythm in this sense, but don't really  
care much for the UI of the built-in keyer when operating  
'fixed.'  And, I needed PC control from several applications,  
anyway.  So I'm converting to the external gizmo.
So far, the subtleties of the set-up have eluded me.  Anyone else  
do this yet, successfully?  Or am I just being very, um, picky?
   
_ 
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- Jack Brindle, W6FB
 
-



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Re: [Elecraft] Winkeyer -> K2 ... weighting equality

[John Huffman]

Steve -

Only had my Winkey for 2 days, but am after the same goal.  I'll use the 
Winkey for both my K2 and my Ten Tec Omni VI (until my K3 arrives in April).


I've gotten close by making the ratio 45 and the weight 60.  I messed 
with Sample, but ended up leaving it at 50.  I can tell when the timing 
is off what I'm used to, when 'R' or 'K' don't complete the last element 
and come out as 'A' and 'N'.


You might give that a try and let me know off list how it works for you. 
 If we work together we should improve our odds  :-)


73 de K1ESE
John

Steve Jackson wrote:

The internal keyer in my K2 seems to have a different 'weighting' (or 
something) compared to my new K1EL Winkeyer.

I have been playing with the settings on the latter to try and make these two devices 'sound' the same.  


Frankly, after 8+ years, I've grown to like the K2's rhythm in this sense, but 
don't really care much for the UI of the built-in keyer when operating 'fixed.' 
 And, I needed PC control from several applications, anyway.  So I'm converting 
to the external gizmo.

So far, the subtleties of the set-up have eluded me.  Anyone else do this yet, 
successfully?  Or am I just being very, um, picky?






  

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Re: [Elecraft] Fw: ADD THE LOW BANDS TO YOUR STEPPIR

[David Ferrington, M0XDF]

Well, I do now, I decided it was time I read QST, at least for a year.

So not only have you written an interesting article, but you've gained ARRL
another member!


On 5/1/08 19:48, "David Ferrington, M0XDF" <[EMAIL PROTECTED]> sent:

> I don't subscribe to QST, but once it's come out, perhaps you could post the
> article?
> 
> 
> On 5/1/08 18:05, "George Badger" <[EMAIL PROTECTED]> sent:
> 
>> - Forwarded Message 
>> From: George Badger <[EMAIL PROTECTED]>
>> To: [EMAIL PROTECTED]
>> Sent: Friday, January 4, 2008 10:30:27 PM
>> Subject: ADD THE LOW BANDS TO YOUR STEPPIR
>> 
>> About a year ago I put up my 3 el. SteppIR. It is a great antenna. To add low
>> band capability I put a loop over the SteppIR in the plane of the SteppIR
>> boom. The addition works like gangbusters on 30, 40, 60, 75/80 and 160. The
>> loop also works as a rotatable 160 RX antenna with 30 dB F/B ratio.
>> The addition is so simple and effective I wrote an article describing it for
>> QST. It is in the current [Feb.] issue.
>> Keep an eye out for the article.
>> 73
>> George  W6TC

-- 
The nice thing about standards is that there are so many of them to choose
from. -Andrew Tannenbaum, computer science professor (1944- )



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Re: [Elecraft] Fw: ADD THE LOW BANDS TO YOUR STEPPIR

[David Ferrington, M0XDF]

I don't subscribe to QST, but once it's come out, perhaps you could post the
article?


On 5/1/08 18:05, "George Badger" <[EMAIL PROTECTED]> sent:

> - Forwarded Message 
> From: George Badger <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED]
> Sent: Friday, January 4, 2008 10:30:27 PM
> Subject: ADD THE LOW BANDS TO YOUR STEPPIR
> 
> About a year ago I put up my 3 el. SteppIR. It is a great antenna. To add low
> band capability I put a loop over the SteppIR in the plane of the SteppIR
> boom. The addition works like gangbusters on 30, 40, 60, 75/80 and 160. The
> loop also works as a rotatable 160 RX antenna with 30 dB F/B ratio.
> The addition is so simple and effective I wrote an article describing it for
> QST. It is in the current [Feb.] issue.
> Keep an eye out for the article.
> 73
> George  W6TC
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-- 
What is the purpose of the giant sequoia tree? The purpose of the giant
sequoia tree is to provide shade for the tiny titmouse.
-Edward Abbey, naturalist and author (1927-1989)


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[Elecraft] Winkeyer -> K2 ... weighting equality

[Steve Jackson]

The internal keyer in my K2 seems to have a different 'weighting' (or 
something) compared to my new K1EL Winkeyer.

I have been playing with the settings on the latter to try and make these two 
devices 'sound' the same.  

Frankly, after 8+ years, I've grown to like the K2's rhythm in this sense, but 
don't really care much for the UI of the built-in keyer when operating 'fixed.' 
 And, I needed PC control from several applications, anyway.  So I'm converting 
to the external gizmo.

So far, the subtleties of the set-up have eluded me.  Anyone else do this yet, 
successfully?  Or am I just being very, um, picky?






  

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[Elecraft] K3: Roofing Filter passband specs

[Larry Molitor]

It was my intent to order a K3 when they were
available from stock. Looking at the demand/supply
curve, it would seem I will be long dead and buried
before that will happen so I'm now looking very
closely at those attributes which directly affect the
usability of the radio in my particular environment. 

The roofing filter plots I see published have poor
resolution and it's not possible to determine the
passband ripple from them. I think this has been
addressed on the list in the past, but I don't
remember any better data being mentioned. If there is
better passband data can someone point me to it?

I'm concerned because in the past when I've
characterized INRAD crystal filters, they have had
very poor passband response resulting in degraded weak
signal performance. In their defense, I have not had
the opportunity to look at any recent production
filters so maybe it's not an issue anymore.

Lacking any better data it appears to me the best
roofing filter option for very weak signal CW and data
modes is the standard 5 pole 2.7 kHz filter.

Thanks.

Larry - W7IUV



  

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Re: [Elecraft] [META] Yet another Elecraft archive

[Thom LaCosta]

At 01:13 PM 1/5/2008, G3YMC wrote:


I have certainly found that if I do a google search on my email address the
one (and usually only) place where it turns up is on the qth.net archives
(this list and another there I subscribe to). Clearly there is deficiency in
this area, despite them saying they are protected.


While it's true that qth.net is not as great as they tell us it is, 
your address shows up in a few other placesperhaps they are 
hosted on qth.net?


lists.contesting.com
www.dsergeant.btinternet.co.uk/
dayton.contesting.com
mlblog.osdir.com/

The bulk of the hits I saw in a google search are at lists.contesting.com


My spam seems to have dropped to an all time low of one or two a day, but
maybe I shouldn't say that in case the spammers hear...



Perhaps I misread your post...but your address is in the clear, wide 
open on your web site.


Security by obscurity may not be the best method to combat spam...or 
so I''ve read.


73,
Thom 


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Re: [Elecraft] [K1] New (to me) K1 questions

[Kevin Cozens]

Hank/KE0CU wrote:

1. Based on the serial number and/or original purchase date, is there anyway
to determine whether hardware or firmware upgrades/modifications are
available?


The online Elecraft order form lists a K1 mod kit for S/N 1092 and earlier.

--
Cheers!

Kevin.

http://www.ve3syb.ca/   |"What are we going to do today, Borg?"
Owner of Elecraft K2 #2172  |"Same thing we always do, Pinkutus:
|  Try to assimilate the world!"
#include  |  -Pinkutus & the Borg
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Re: [Elecraft] [K1] New (to me) K1 questions

[Kevin Cozens]

Hank/KE0CU wrote:

2. I am interested in back lighting the display. Does anyone offer a
modification kit for this purpose?


You can order a backlight kit from Elecraft. It is listed on the order form.

--
Cheers!

Kevin.

http://www.ve3syb.ca/   |"What are we going to do today, Borg?"
Owner of Elecraft K2 #2172  |"Same thing we always do, Pinkutus:
|  Try to assimilate the world!"
#include  |  -Pinkutus & the Borg
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Re: [Elecraft] [META] Yet another Elecraft archive

[G3YMC]

David Woolley-3 wrote:
> 
> G4ILO wrote:
>> Wondering why spam has started arriving at this email address, which I
>> set up
>> specifically to use for this reflector, I searched for it on Google. I
>> found
>> the address in an archive of the reflector on Google Groups
>> (http://groups.google.com/group/elecraft-archive). Unfortunately, in this
>> archive, all email addresses are in clear and therefore accessible to
> 
> They are not in the clear.  The tail end of the username is replaced by 
> "...".  On the other hand, the obfuscation on qth.net is so trivial that 
> I'm sure that most spambots de-obfuscate it without any thought these 
> days.  I believe that qth.net is big enough to be worth specific 
> targetting by spammers, although Google is, obviously, a prime target.
> 
> 

I have certainly found that if I do a google search on my email address the
one (and usually only) place where it turns up is on the qth.net archives
(this list and another there I subscribe to). Clearly there is deficiency in
this area, despite them saying they are protected.

As an aside, I am posting this via the Nabble web interface. I wonder if my
real email address gets archived in the qth.net one? And secondly, does this
message actually get to the email list, there have been suggestions that
some of the Nabble ones don't...?

My spam seems to have dropped to an all time low of one or two a day, but
maybe I shouldn't say that in case the spammers hear...

73 Dave G3YMC

-- 
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http://www.nabble.com/Yet-another-Elecraft-archive-tp14630660p14636852.html
Sent from the Elecraft mailing list archive at Nabble.com.

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Re: [Elecraft] dipole antenna efficiency

[David Wilburn]

Absolutely.  Even when you look at Joe's site, www.k1jek.com there is
enough info in what you see to make the antenna.  Rotor cable, ladder
line, a balun and coax.  I personally do not think what he asks for the
on the website is overly much.  He makes the products himself, and
stands behind them.  He actually answers the phone when you call and ask
questions.  My life is a bit complicated, but I could have easily made
one.  I was willing to make the trade of money vs. time and materials.

As an example, I had a quick QSO with AA4AK the other night, so I could
have Maine for WAS LOTW.  I found out the next morning, after finishing
my DL1 and going to play with it, that the rig was set to 8w.  The
antenna must be doing something right.
-  

David Wilburn
[EMAIL PROTECTED]
K4DGW
K2 S/N 5982


On Fri, 2008-01-04 at 18:11 -0500, Thom LaCosta wrote:
> On Fri, 4 Jan 2008, David Wilburn wrote:
> 
> > I understand many G5RV's are getting replaced with these antennas.  I
> > have the Grampy version, that is 100' long on each side, for a total of
> > 300' of wire on each side, all in a 100' on each side package.  Have had
> > good luck with it.  Their shortest is a bit over 70'.
> 
> And should you want to roll your own:
> 
> http://www.hamuniverse.com/cobraantenna.html
> 
> Thom,EIEIO
> Email, Internet, Electronic Information Officer
> 
> www.baltimorehon.com/Home of the Baltimore Lexicon
> www.tlchost.net/hosting/ Web Hosting as low as 3.49/month

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[Elecraft] Fw: ADD THE LOW BANDS TO YOUR STEPPIR

[George Badger]

- Forwarded Message 
From: George Badger <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Sent: Friday, January 4, 2008 10:30:27 PM
Subject: ADD THE LOW BANDS TO YOUR STEPPIR

About a year ago I put up my 3 el. SteppIR. It is a great antenna. To add low 
band capability I put a loop over the SteppIR in the plane of the SteppIR boom. 
The addition works like gangbusters on 30, 40, 60, 75/80 and 160. The loop also 
works as a rotatable 160 RX antenna with 30 dB F/B ratio.
The addition is so simple and effective I wrote an article describing it for 
QST. It is in the current [Feb.] issue.
Keep an eye out for the article.
73
George  W6TC
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[Elecraft] [K1] New (to me) K1 questions

[Hank/KE0CU]

I recently purchased a good used K1 and have a couple questions:

1. Based on the serial number and/or original purchase date, is there anyway
to determine whether hardware or firmware upgrades/modifications are
available?

2. I am interested in back lighting the display. Does anyone offer a
modification kit for this purpose?

Thanks!

Hank/KE0CU

-- 
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http://www.nabble.com/-K1--New-%28to-me%29-K1-questions-tp14636565p14636565.html
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[Elecraft] Polar Bear N7UN/2 on 40m

[Ron Polityka]

Hello,

A bunch of Polar Bears are on the Appalachian trail in NJ now.

They are at Catfish Tower.

Just worked Guy de N7UN/2 from Catfish Tower in NY.

7040.4 @ 17:24 UTC

Guy said that the others, WA3WSJ, NK1N and NU3E are up at Catfish Tower on 
the other bands.


72 and Thanks,
Ron Polityka
WB3AAL
www.wb3aal.com
www.n3epa.org


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RE: [Elecraft] dipole antenna efficiency

[Ron D'Eau Claire]

Ha, ha! Check the date on the article. 

VK5BR has a parallel tuned circuit (two plates for the capacitor and coil
for the inductance) with the "feed" tapped across a couple of turns of the
coil. 

One could use any parallel coil/capacitor combination with adequate voltage
and current ratings to do that. 

It's all fed with RF from the unbalanced open wire line, which certainly
does radiate a bit. The coil/cap combination will add a tiny bit of
radiation too. 

It reminds me the famous "light bulb" antenna by, if I recall correctly,
Larson E. Rapp, aka Byron Goodman, W1DX (SK) in which a feed line was
connected to an incandescent bulb atop a fence post in a much earlier April
issue of a well-known Amateur radio journal.

VK5BR's antenna might radiate a bit more, due to none of the energy being
converted to photons at visible light frequencies, but Rapp's version
offered a clear visual indication that the antenna was getting RF power.

Rewriting Maxwell's laws is a long-standing, honored tradition in many
electronics journals every April, Amateur and Professional.  

Ron AC7AC 



-Original Message-
Ooops.  I must apologise for my mistake:  I've read the article in more 
detail and Lloyd is not feeding a small antenna, he is using the "feeder" as

the antenna by deliberately unbalancing it with a terminal unit to obtain 
maximum current at the far end of the feeder.  Presumably this would then be

elevated to a convenient point for maximum effect.

David
G3UNA

> Here is an interesting antenna made by Lloyd Butler VK5BR.  It uses
> open
> wire feeder to a VERY small antenna.
>
> http://users.tpg.com.au/users/ldbutler/ReverseFeedTopLoading.htm
>
> David
> G3UNA
> 

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[Elecraft] #187 arrival

[bruce bennett]

Just received my k3 (kit) ordered May 3, 2007. Mailed
4 January. I guess the storm did not slow it down.
Bruce Bennett


  

Never miss a thing.  Make Yahoo your home page. 
http://www.yahoo.com/r/hs
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Re: [Elecraft] dipole antenna efficiency

[Kurt Pawlikowski]

David,

   Actually, if you follow some of the other related articles Lloyd 
wrote, the effect of this design seems to approximate a full wave dipole 
with a device about 2% of a wave length. That is, a 40 meter antenna 
about 3 feel long. He also purports a kind of "folded" antenna for 80 
meters at about the same length. Wow. The possibility of a 6 foot long 
160 meter antenna that works. I am definitely intrigued!


   Regards,

   kurtt

   Kurt Pawlikowski, AKA WB9FMC
   The Pinrod Corporation
   [EMAIL PROTECTED]
   (773) 284-9500
   http://pinrod.com

David Cutter wrote:
Ooops.  I must apologise for my mistake:  I've read the article in 
more detail and Lloyd is not feeding a small antenna, he is using the 
"feeder" as the antenna by deliberately unbalancing it with a terminal 
unit to obtain maximum current at the far end of the feeder.  
Presumably this would then be elevated to a convenient point for 
maximum effect.


David
G3UNA

Here is an interesting antenna made by Lloyd Butler VK5BR.  It uses 
open wire feeder to a VERY small antenna.


http://users.tpg.com.au/users/ldbutler/ReverseFeedTopLoading.htm

David
G3UNA


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Re: [Elecraft] orion agc vs K3

[Tom Whiteside]

From: Koppendorfer Klaus [EMAIL PROTECTED]

i had the chance to do an A/B comparing
between Orion-I and K3 this evening

[snip]

I tried all possible settings for agc on orion.. but could not find
a situation where the raugh noise between cw-signals was fine
so the only way was to switch off agc and reduce rf-gain - then we found
a setting where orion sounds near k3 (by the way K2 sounds very fine under
these conds)

!!! these was seen only on 80meter evening with heavy European qrm !!!


I'd suggest trying a little hang time on the Orion AGC setting and trying
reduced gain also.Then dialing back the RF gain until things quiet down.

I'm sure the Orion's robust front end and AGC performance has netted me a
number of new ones on 160M - it has been a great radio.

But I placed my K3 order yesterday!I'm looking forward especially to
being able to do diversity listening with a real subreceiver - you can sure
hear the difference in artifact junk in big signal conditions between the
Orion's main and sub receivers!   Also looking forward to the narrower
Roofing filter capabilities not possible on the Orion I and also the smaller
form factor and other features.Be on the lookout for a good deal on the
Orion when the K3 arrives!

I've been an Elecraft fan for a long time with K2 serial number 1369.The
K2 also has a darned good front end - mine handled the 20M operation of the
W1AW/5 contest operation back in 2000 and is a favorite at Field Day - One
year, we moved a big ICOM out of the way on the CW station to make some
natural powered QSOs on my K2 which took lots less juice from a guy peddling
hard on a generator set.   And there were howls of protest when put the ICOM
back in line and they had to listen to all the spurious junk from the other
transmitters they were not hearing from the K2

The K3 reminds me of my little VW Turbo-diesel Jetta - I bought that little 
car to
be more efficient but found that it was also really fun to drive.Having 
a radio

with this value and size that is also World class is just too cool

Tom N5TW 


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Re: [Elecraft] Return

[Thom LaCosta]

At 10:20 AM 1/5/2008, Dave Sublette wrote:

Good morning,

After a one year +/- hiatus I am back on this list. I am interested 
in how the K3 is doing. No need to post anything. I will just watch. 
However, if anyone wishes to send me an email off list, I will read 
and respond as appropriate.


You can also find information about the K3 and other topics at

http://www.zerobeat.net/smf/
and
http://zerobeat.net/mediawiki/index.php/Main_Page

Both venues are cooperative efforts of several Elecraft/K3 owners.

73
Thom k3hrn 


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Re: [Elecraft] Elecraft K2 & K3 Covers

[David Wilburn]

Definitely interesting.  I would be interested in some pictures,
especially with the Elecraft logo.  My mojo infection causes me to want
one for each (current k2 and future k3) but the practical side asks when
I would put it on?  

I imagine this is VERY practical for folks whose shacks are in more of a
living space.  I find that I have my rig on often enough, that I would
wonder where to store the cover.  But for traveling and other purpose I
can see uses for it.  When do other members of this distinguished
reflector put covers on their rigs?

Is it essentially 3 sided?  I assume it can be placed on with the cables
and all still running out the back.
-  

David Wilburn
[EMAIL PROTECTED]
K4DGW
K2 S/N 5982


On Fri, 2008-01-04 at 17:15 +, Ken Kopp wrote:
> I believe there used to be a source of radio covers shown on the 
> Elecraft site, but I don't see it now.  Can anyone shed light on this?
> 
> My Lady ... Rose, N7HKW ... has made several covers for my 
> K2 and K3 and we wonder if there's a market for them?  She
> already has several orderes from local friends.  If you're curious 
> we can e-mail a photo.
> 
> She's a master seamstress /quilter and would like to recover some 
> of the investment in her do-everything, compter controlled sewing 
> and embroidery machine.  ( She could have bought three more K3's
> for me.) (:-))
> 
> (We have Eric's OK for this posting.)
> 
> 73/88! Ken & Rose Kopp - K0PP/N7HKW
> [EMAIL PROTECTED]
> or 
> [EMAIL PROTECTED]
> 
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Re: [Elecraft] dipole antenna efficiency

[David Cutter]

Ooops.  I must apologise for my mistake:  I've read the article in more 
detail and Lloyd is not feeding a small antenna, he is using the "feeder" as 
the antenna by deliberately unbalancing it with a terminal unit to obtain 
maximum current at the far end of the feeder.  Presumably this would then be 
elevated to a convenient point for maximum effect.


David
G3UNA

Here is an interesting antenna made by Lloyd Butler VK5BR.  It uses open 
wire feeder to a VERY small antenna.


http://users.tpg.com.au/users/ldbutler/ReverseFeedTopLoading.htm

David
G3UNA


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[Elecraft] Return

[Dave Sublette]

Good morning,

After a one year +/- hiatus I am back on this list. I am interested in 
how the K3 is doing. No need to post anything. I will just watch. 
However, if anyone wishes to send me an email off list, I will read and 
respond as appropriate.

73 and HNY,

Dave, K4TO

K2 S/n 4??? (I forget)
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Re: [Elecraft] 2SC2166 Driver replacement?

[WA7CS]

 My new K1 seems to have a replacement final as well.  I'm going to make a
leap of faith and solder in the undocumented 2SC5739 in place of the
specified 2SC2166.

Carl
WA7CS

PS:  K1 serial Number 2476 is alive and listening - Transmitter installation
underway!



Don Wilhelm wrote:
> 
> 
> Put the 2SC5739 in the Q6 position - it will be just fine.
> Sorry about the lack of an update for the Errata sheet (we can probably 
> blame it on the K3 preparation and resulting overtime at Elecraft).  If 
> I can guess a bit, the change was part of the switch to RoHS compliant 
> devices, but that is only a guess.
> 
> 73,
> Don W3FPR
> 
> Matt Palmer wrote:
>> Again I invoke the elecraft gods, i dont have a 2sc2166, mine is a
>> 2sc5739, checking the data sheets these are the same except they have
>> lower voltage, current and power dissapation rating, is this a
>> documented replacement? I would have expected it to show up in errata
>> somewhere... Just want to make sure its still ok before i tag it down.
> 
> 

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Re: [Elecraft] posts not showing up

[Leo Bricker K5LDB]

Ed K1EP wrote:
It has nothing to do with the list.  It is a "feature" of gmail.   It 
discards or just archives the mail that you posted.
That kind of sucks. I just looked at options and there's no way to 
change that either, unless I'm too blind to see it. Well, at least now I 
know what's the problem/reason. Thanks and 73.


Leo

--
73 K5LDB
--
Support the entire Constitution, not just the parts you like.

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[Elecraft] K3 QSO

[H. Cary III]

K3-100's #176 (W0SZ) and #178 (K4TM) stumbled upon one another at 14.213 
yesterday afternoon. Steve and I spent the time raving about our K3's and how 
much we have yet to figure out!
It is a Happy New Year!
73,
Cary, K4TM
K2-100 #5266
K3-100 #178
"I love my K2 and  K3!"

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[Elecraft] WB3AAL on the AT on 5 Jan 2008

[Ron Polityka]

Hello,

Unfortunately I have to cancel my Appalachian Trail today.

One of our pet is very sick and I have to take it to the veterinarian at 
15:30 UTC and I have no idea when I will be back home.


I will be going out on 19 Jan 2008 for the PBMME. www.polarbearqrp.org

72 and Thanks,
Ron Polityka
WB3AAL
www.wb3aal.com
www.n3epa.org/

K1 - SN 01011
K2 - SN 01392

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Re: [Elecraft] dipole antenna efficiency

[N2EY]

In a message dated 1/4/08 4:31:49 PM Eastern Standard Time, [EMAIL PROTECTED] 
writes:


> The most expensive thing is ground to install
> them where antenna restrictions don't bring down the
> wrath of the taste police. 

AMEN!!

(I have been trying for
> 
> over 50 years to convince the world that antennas are
> beautiful, but without success) 

Me too. 

I've always found it odd that the very people who want the convenience of 
modern technologies often consider the technologies themselves to be 
unattractive, and want things to look like a time when life was much more 
difficult. 

73 de Jim, N2EY


**
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shape.
 
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Re: [Elecraft] dipole antenna efficiency

[N2EY]

In a message dated 1/4/08 4:34:29 PM Eastern Standard Time, [EMAIL PROTECTED] 
writes:


> I've never understood the popularity of the G5RV.  It's
> achieved a sort of "cult" following.

It's an ingenious compromise antenna for several bands, that's all.
Actually, just a ~102 foot dipole with a matching system that gives
"low" (but not unity!) SWR on several HF bands, so that a simple
ATU can match it.

  The original design
> 
> was for a 20M -ONLY- antenna, 

Not true!

I have PDF's of the original articles by G5RV himself, and from the very 
beginning it was a multiband design. He had a small garden ("back yard" to us 
Yanks) and wanted to get on the air easily, quickly and simply. For his 
application, it worked.

But it must be remembered that when G5RV designed the antenna, the ham bands 
were somewhat different than today. 30, 17 and 12 meters weren't ham bands at 
all. 9-/75 meters in G land was 3.5 to 3.8 MHz only, and 40 meters was 7.0 to 
7.1 MHz.

Most important of all, the rigs in use were capable of matching "reasonable 
levels of SWR" - meaning 3 or 4 to 1 wasn't considered to be worth worrying 
about for the bands and short lines being run.  

and somehow has
> 
> morphed into a do everything hoax.

Not a hoax, but there's a lot of misunderstanding about the antenna.

The biggest misunderstanding is that too many folks expect to put up a 
G5RV-like antenna and get 1:1 SWR on all parts of every HF band from 80 thru 10 
meters, automatically. And work the world with the same ease as folks with big 
aluminum. 

That's just not going to happen. It's just a dipole with an ingenious feed 
system, not magic.

> I do antenna talks at conventions and hamfests, and
> I always ask; "How many of you use a G5RV"? The
> hands go up and it's usually about 50% of the audience.
> I say; "Gosh, I'm sorry", and try to show them how much 
> easier and more efficient it would be to simply use the
> open wire feeder portion of the antenna and a balun at/in
> the (required) tuner.
> 

It's easier to do it that way *IF* you can make the feedline and antenna 
length such that the balun doesn't have to deal with very high, very low, or 
highly reactive impedances on the bands of interest. Or if you can run the 
balanced 
line all the way to a true balanced tuner that can handle the impedances 
presented to it. 

> Some years ago the "Carolina Windom" had the same
> sort of following
> 

And for the same reasons - with the same limitations.

The G5RV and Windom antennas can be useful solutions in many cases. The main 
thing is to understand how they work and what their limitations are.

---

Comparing HF antennas can be very misleading because of all the vagaries of 
propagation and expectations. For example, suppose two hams with identical 100W 
output rigs put up identical dipoles, but Ham A's dipole has a feedline/tuner 
system that is 88% efficient and Ham B's dipole has a feedline/tuner system 
that is 22% efficient.  

Ham A loses only 12 watts in the feedline/tuner system - that's about as good 
as it gets on HF. Ham B loses *78* watts in the feedline/tuner system - 
almost six times the loss of Ham A! 

Yet at the receiving end, the difference is only one S unit - 6 dB. Slight 
differences in propagation could easily mask that and make Ham B's antenna 
appear to be as good or better than Ham A's.

A lot of hams will say a particular antenna "works great" for them. But what 
does that really mean? I remember one multitransmitter Field Day, some years 
ago, when a variety of antennas were tried out by the various station teams. 
All reported their setups "worked great" when notes were compared a few hours 
into the contest.

But for one team, that meant they were able to average 40-60 QSOs/hour, and 
for another team, it meant 10-15 QSOs/hour!  Their expectations were completely 
different. (And compared to truly competitive setups, neither was a 
world-beater).

73 de Jim, N2EY


**
Start the year off right.  Easy ways to stay in 
shape.
 
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Re: [Elecraft] dipole antenna efficiency

[David Cutter]

Here is an interesting antenna made by Lloyd Butler VK5BR.  It uses open 
wire feeder to a VERY small antenna.


http://users.tpg.com.au/users/ldbutler/ReverseFeedTopLoading.htm

David
G3UNA 


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[Elecraft] K3 Serial numbers

[G3SJJ]

Looking for some clues on serial numbers. Last noted one is 178, yet K3 
Wiki says first 200 units have been produced but doesn't say shipped.


I am planning some contests over the next two months which will involve 
my K3. According to the latest info, orders received up to 9th May will 
be shipped by end of next week, so I am thinking that 10-14th May orders 
will be shipped by week ending 18 Jan. That would be perfect as my 14th 
May should be with me by 25th and up and running, hopefully, to slot in 
my SO2R system for weekend of 1/2/3 May. I sold my K2 back in June last 
year in anticipation of K3 delivery in July and now just have the FT1kMP 
so no SO2R capability. There is no great panic but without the K3 I 
would probably ask the owner of a big contest station, so obviously the 
sooner I can advise him to see if his domestic arrangements will allow 
this the better.


Again early March sees another contest where SO2R is ideal. The rate is 
painfully low, about 10 an hour for us in the UK, but mults are vital so 
searching other bands becomes key to building a good score.


If shipping has gone out again it may even benefit me as I am consider 
visiting states in mid-March, in which case I could have the K3 
delivered to me there by some unsuspecting N0 or N6 (!!), and maybe I 
could even partially assembly it so i don't bring the bog box back. VAT 
saved would pay most of my air fare!


Not looking to antagonise the Stars and Stripes waving guys but I am 
trying to do some realistic planning and tracking serial numbers is helpful.


Chris G3SJJ


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Re: [Elecraft] K2 Microphone Jack Grounding

[Don Wilhelm]

Mike,

Do it - it certainly will harm nothing even if it does not cure any problem.
It can be done without disassembling the front panel - remove the left 
side panel, scrape a bit of the solder mask off the ground plane next to 
the microphone jack and solder an 'L' shaped wire to both the mic jack 
and the ground plane.  It takes a lot of heat (and more time than a 
normal connection) to make the solder flow, so use a higher temperature 
on your soldering station or pull out the 'big gun' for this task


73,
Don W3FPR

Mike Walkington wrote:

Hi,

Just wondering what the definitive advice is on doing the K2 Microphone Jack
Grounding modification. I note there is no mention of doing this in either
the K2 or KSB2 manuals?

Mike
VK1KCK
K2 #2599 


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Re: [Elecraft] K2 Microphone Jack Grounding

[David Pratt]

VK1KCK de G4DMP

Mike - Details of this are at
http://www.elecraft.com/Apps/k2_microphone_jack_grounding.htm

I carried out this mod on my K2 as a matter of course. I felt that it 
only was right that the 8-pin microphone connector should be earthed. I 
have to say that I am surprised that this mod, dated 17 November 1999, 
has not yet found its way into the K2 assembly instructions.


73

David G4DMP

In a recent message, Mike Walkington <[EMAIL PROTECTED]> wrote

Just wondering what the definitive advice is on doing the K2 Microphone Jack
Grounding modification. I note there is no mention of doing this in either
the K2 or KSB2 manuals?

--
David G4DMP
Leeds, England, UK
--


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Re: [META] [Elecraft] Yet another Elecraft archive

[David Woolley]

G4ILO wrote:

Wondering why spam has started arriving at this email address, which I set up
specifically to use for this reflector, I searched for it on Google. I found
the address in an archive of the reflector on Google Groups
(http://groups.google.com/group/elecraft-archive). Unfortunately, in this
archive, all email addresses are in clear and therefore accessible to


They are not in the clear.  The tail end of the username is replaced by 
"...".  On the other hand, the obfuscation on qth.net is so trivial that 
I'm sure that most spambots de-obfuscate it without any thought these 
days.  I believe that qth.net is big enough to be worth specific 
targetting by spammers, although Google is, obviously, a prime target.


Spammers also subscribe to legitimate lists.  Although that is mainly to 
spam through them, I'm sure they capture email addresses whilst they are 
doing it.


The other big threat, and possibly the biggest threat in this case, is 
that another member of the list will have had their PC compromised, in 
which case you can assume that all the addresses in their address book 
will be known to spammers; many email clients automatically add new 
addresses, and the actual mailboxes can also be trawled.


Unless you only communicate with a closed circle of PC security experts, 
you should work on the principle that the spammers will find you, 
sooner, or later.



spambots.



--
David Woolley
Emails are not formal business letters, whatever businesses may want.
RFC1855 says there should be an address here, but, in a world of spam,
that is no longer good advice, as archive address hiding may not work.
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[Elecraft] K2 #6324 is running

[Mike, W9QS]

My K2 Serial #6324 is complete.

First contact was with the California Fox on 40. 
There is no comparison between the IC718 and the K2 on
the receive side.  Love both filters.

Many thanks to Gary Surrancy for his guidance and
patience in helping me find the HI-CUR problem.



73,72

Mike, W9QS
EX: KN6TBP (1956), K1DGQ, DL4KM, K5LJN, W9FRR, W9KVF

K2, OHR500, OHR100A, SP1


  

Looking for last minute shopping deals?  
Find them fast with Yahoo! Search.  
http://tools.search.yahoo.com/newsearch/category.php?category=shopping
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[Elecraft] K2 Microphone Jack Grounding

[Mike Walkington]

Hi,

Just wondering what the definitive advice is on doing the K2 Microphone Jack
Grounding modification. I note there is no mention of doing this in either
the K2 or KSB2 manuals?

Mike
VK1KCK
K2 #2599 

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[Elecraft] NOAA: Start of New Sunspot Cycle

[Toby Deinhardt]

=



NOAA Confirms Start of New Sunspot Cycle

12 hours ago

WASHINGTON (AP) — A new solar cycle is under way. The National Oceanic 
and Atmospheric Administration said Friday that the first sunspot of a 
new 11-year cycle has appeared in the sun's northern hemisphere.


usw. usw. usw.

=



NOAA: Sunspot is Harbinger of New Solar Cycle, Increasing Risk for 
Electrical Systems


January 4, 2008

A new 11-year cycle of heightened solar activity, bringing with it 
increased risks for power grids, critical military, civilian and airline 
communications, GPS signals and even cell phones and ATM transactions, 
showed signs it was on its way late yesterday when the cycle’s first 
sunspot appeared in the sun’s Northern Hemisphere, NOAA scientists said.


“This sunspot is like the first robin of spring,” said solar physicist 
Douglas Biesecker of NOAA’s Space Weather Prediction Center. “In this 
case, it’s an early omen of solar storms that will gradually increase 
over the next few years.”


usw. usw. usw.

=



SOLAR CYCLE 24 BEGINS:  Solar physicists have been waiting for the 
appearance of a reversed-polarity sunspot to signal the start of the 
next solar cycle. The wait is over. Yesterday, a magnetically reversed 
sunspot emerged at solar latitude 30 N, shown in this photo taken by 
Greg Piepol of Rockville, Maryland:


For reasons explained in a recent [EMAIL PROTECTED] story, this marks the 
beginning of Solar Cycle 24 and the first step toward a new solar 
maximum. Intense solar activity won't begin right away. Solar cycles 
usually take a few years to build from solar minimum (where we are now) 
to Solar Max (expected in 2011 or 2012). It's a slow journey, but we're 
on our way!


usw. usw. usw.

=



New Sunspot Cycle Begins
By The Associated Press

posted: 4 January 2008
5:30 p.m. ET

WASHINGTON (AP) — A new solar cycle is under way.

The National Oceanic and Atmospheric Administration said Friday that the 
first sunspot of a new 11-year cycle has appeared in the sun's northern 
hemisphere.


usw. usw. usw.

=



vy 73 de toby
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Re: [Elecraft] If you can't get a K3 second choice?

[Simon Brown (HB9DRV)]

Kenwood TS-480SAT.

Simon Brown, HB9DRV

- Original Message - 
From: "Larry Putman" <[EMAIL PROTECTED]>



Just wondering what Rig would be your second choice if you can't wait 
forever to get a K3?


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Re: [Elecraft] TS-480SAT or ProIII

[Simon Brown (HB9DRV)]

- Original Message - 
From: "K6AX" <[EMAIL PROTECTED]>





480 for a temporary solution. (Best radio under $1K)



Seconded, especially the TS-480SAT (100W, ATU). I have two of these fine 
radios, it's my radio of choice (I use the K3 as a receiver mainly).


Simon HB9DRV 


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Re: [Elecraft] posts not showing up

[Leo Bricker K5LDB]

G4ILO wrote:

That depends on whether you set the "Receive your own posts to the list?"
option in the subscription options.

-
Julian, G4ILO K2 s/n: 392  K3 s/n: ???
G4ILO's Shack: www.g4ilo.com
Zerobeat Ham Forums: www.zerobeat.net/smf
  
Thank you for the suggestion. When I read it I thought that must be it 
but found I was set to receive own messages yes so I should be getting 
them. I guess this is one of the 8 wonders of the internet world.


--
73 K5LDB
--
Support the entire Constitution, not just the parts you like.

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