Re: [Elecraft] K-3 4629

[Ralph S. Turk]

Ordered thursday with the discount
> On April 7, 2018 at 6:07 PM Hisashi T Fujinaka  wrote:
> 
> 
> Looks like there's a discount on Fred's book. I think that's a great
> thing to get if you don't have it already. I have two of them (two
> different versions.)
> 
> On Fri, 6 Apr 2018, Ian Kahn, KM4IK wrote:
> 
> > Ralph,
> >
> > If I may suggest, download and read the manual from the Elecraft web site, 
> > if 
> > you haven't already. Also, get a copy of Fred Cady's, K7EX, excellent book 
> > on 
> > the K3. It will help you understand the ins and outs of your transceiver.
> >
> > Also, the two pre-amps are new to the K3S, if I remember correctly. Our 
> > older-generation K3s don't have them.
> >
> > Enjoy your new rig! I love mine!
> >
> > 73 de,
> >
> > Ian, KM4IK
> > K3 #281
> >
> >
> > On 04/06/2018 05:04 PM, Ralph S. Turk wrote:
> >> Just got my K3 back from the factory.  Everything that I have tested works 
> >> correctly.
> >> 
> >> This week I say a email referring to Pre Amp 1 and 2.  I can't find 
> >> anything in the manual
> >> 
> >> so far.  Are there such items or am I not interpreting that email 
> >> correctly.  I should have saved
> >> 
> >> it but I didn't.
> >> 
> >> I also should state that I am very new to the K3.  Have only had for two 
> >> weeks.  Was from a estate
> >> 
> >> sale.
> >> 
> >> 
> >> Thanks
> >> 
> >> Ralph, W7HSG
> >> __
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> >> Message delivered to km4ik@gmail.com
> >
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> >
> 
> -- 
> Hisashi T Fujinaka - ht...@twofifty.com
> BSEE + BSChem + BAEnglish + MSCS + $2.50 = coffee
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[Elecraft] Elecraft CW Net Announcement

[kevinr]

Good Evening,

   The wind has been howling all day but the antennas are still up and 
the power is still on.  So I spent the day watching the Masters and 
practicing CW with my left hand.  After the first week or so it felt 
less strange.  The biggest problem I have is to remember how to send 
each character.  Over the years I have forgotten my lookup table.  It is 
much like typing.  I think about what I want to write and my fingers do 
the work.  I have to look at the keyboard to see where keys are but my 
fingers know where to go without me thinking.  Sending code with my 
right hand is like that.  I really need to think about each character 
when I send with my left hand.


   The paddles are wired oppositely from my working set of paddles so 
the thumb and forefinger are doing the same thing with either hand.  It 
is just there is no lookup table in my head telling me how to send.  So 
I have been working my way through the alphabet and sending random 
character groups; today I sent names from the leaderboard.  The first 
week was quite frustrating but I'm getting better, gaining strength and 
dexterity.  Sending too slowly confused me to no end so I set my 
WinKeyer to about 18 wpm or so.  Once I raised the speed sending became 
easier.  Now it is simply trying to remember how each character is 
formed.  In a few months of practice I should be able to get on the air 
with my non-dominant hand.  I am sure everyone will notice.



Please join us tomorrow on:

14050 kHz at 2200z Sunday (3 PM PDT Sunday)
  7045 kHz at z Monday (5 PM PDT Sunday)

73,
Kevin. KD5ONS

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Re: [Elecraft] K-3 4629

[Hisashi T Fujinaka]

Looks like there's a discount on Fred's book. I think that's a great
thing to get if you don't have it already. I have two of them (two
different versions.)

On Fri, 6 Apr 2018, Ian Kahn, KM4IK wrote:


Ralph,

If I may suggest, download and read the manual from the Elecraft web site, if 
you haven't already. Also, get a copy of Fred Cady's, K7EX, excellent book on 
the K3. It will help you understand the ins and outs of your transceiver.


Also, the two pre-amps are new to the K3S, if I remember correctly. Our 
older-generation K3s don't have them.


Enjoy your new rig! I love mine!

73 de,

Ian, KM4IK
K3 #281


On 04/06/2018 05:04 PM, Ralph S. Turk wrote:
Just got my K3 back from the factory.  Everything that I have tested works 
correctly.


This week I say a email referring to Pre Amp 1 and 2.  I can't find 
anything in the manual


so far.  Are there such items or am I not interpreting that email 
correctly.  I should have saved


it but I didn't.

I also should state that I am very new to the K3.  Have only had for two 
weeks.  Was from a estate


sale.


Thanks

Ralph, W7HSG
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--
Hisashi T Fujinaka - ht...@twofifty.com
BSEE + BSChem + BAEnglish + MSCS + $2.50 = coffee
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Re: [Elecraft] K3 Preamp 2

[Al Lorona]

Hi, Barry,
It's not the signals that determine whether you need a preamp, it's the noise 
level. A receiver should have enough gain to put its internal noise floor below 
the external, atmospheric noise floor, so that it doesn't become the limiting 
factor in hearing weak signals close to the noise. That's what makes a preamp 
necessary.
Certainly, if your noise floor is lower than here in urban North America, there 
may be cases where a preamp does us no good, but is necessary for you.
I think I once posted a case study here a while ago... but I would have to go 
searching for it. The numbers I used were definitely US-biased. Life for a ham 
here has become a really discouraging exercise in trying to copy signals below 
your neighbors' app-enabled pet massagers and internet-controlled wine coolers, 
all fed by those infernal switch-mode power supplies. My two neighbors' homes 
are really just enormous square wave-producing things. This is also why 
everybody you hear is running 1,000 watts or more. It's power inflation. The 
military spends millions on radar jamming equipment... when all they'd have to 
do is do whatever my neighbor Johnny is doing. He must have a phased array 
radar, arc-welding, barrage jamming plant next door. If you ever bring your rig 
over here on vacation, be sure to pack a 60 dB attenuator with it.
R,
Al  W6LX

  From: Barry Simpson 
 To: elecraft@mailman.qth.net 
 Sent: Saturday, April 7, 2018 2:25 PM
 Subject: [Elecraft] K3 Preamp 2
   
I often see posts from US stations questioning the need for any preamp below 
20m and just now challenging the need for preamp 2 on 10m.

That may be all well and good in the land of the huge antennas and the 
thousands of big signals from the US and Europe but let me tell you that down 
here, when you are scratching around for weak signals on 10m and 12m, preamp 2 
makes a world of difference.

Barry Simpson VK2BJ.    

Sent from my iPad
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Re: [Elecraft] Fred's vs Elecraft manuals de KE7X

[kevinr]

I learn subjects more readily if they keep from diving into the 
mathematics on page one.  I don't find the math difficult it just 
distracts me from the broad brush strokes of concepts.  Once I get the 
idea firmly in my head the mathematics helps me dig deeper. But starting 
with the math just means it takes me longer to gain understanding.  
Unless it is a math (or physics) course :)  Show me examples, explain 
the examples, then dig into the equations.


   Kevin.  KD5ONS


On 04/07/2018 04:17 PM, hawley, charles j jr wrote:

That’s a great book, “The Art of Electronics”. Horowitz and Hill, Harvard and 
Rowland institute for Science. Interesting about the math. I learned the math, 
though, in EE courses and found that to be a plus. Math with an application.
Seemed like I was always taking the math course after I learned the math the 
semester before in an EE course.
Anyway, I bought the book when I was already on the job and it was a great 
source of ideas and understanding.
Chuck
KE9UW

Sent from my iPhone, cjack


On Apr 7, 2018, at 3:35 PM, Mike Markowski  wrote:

Many thanks to everyone who responded!  I have a clearer understanding now.

It reminds me of my own EE student days.  I found learning electronics 
challenging because our texts started with math and the useful properties of 
this or that circuit kind of fell out as a side effect or mini-miracle.  Then I 
discovered the text 'The Art of Electronics' which approached it from a 
different angle and things clicked much more naturally for me.

I like Skip K6DGW's description of the two approaches to Elecraft as 
orthogonal.  So I think I get it.  Thanks, all!

73,
Mike ab3ap


On 04/07/2018 03:05 PM, Cady, Fred wrote:
[...]  I found during my 40+ years as an EE prof that there are
various ways that people learn.Some are visual learners and learn by seeing 
diagrams and images, some can gain comprehension just be reading.Others are 
more hands-on learners, needing the “lab experience” to cement their 
understanding of the concepts.[...]
73,
Fred

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Re: [Elecraft] Fred's vs Elecraft manuals de KE7X

[hawley, charles j jr]

That’s a great book, “The Art of Electronics”. Horowitz and Hill, Harvard and 
Rowland institute for Science. Interesting about the math. I learned the math, 
though, in EE courses and found that to be a plus. Math with an application. 
Seemed like I was always taking the math course after I learned the math the 
semester before in an EE course.
Anyway, I bought the book when I was already on the job and it was a great 
source of ideas and understanding.
Chuck
KE9UW

Sent from my iPhone, cjack 

> On Apr 7, 2018, at 3:35 PM, Mike Markowski  wrote:
> 
> Many thanks to everyone who responded!  I have a clearer understanding now.
> 
> It reminds me of my own EE student days.  I found learning electronics 
> challenging because our texts started with math and the useful properties of 
> this or that circuit kind of fell out as a side effect or mini-miracle.  Then 
> I discovered the text 'The Art of Electronics' which approached it from a 
> different angle and things clicked much more naturally for me.
> 
> I like Skip K6DGW's description of the two approaches to Elecraft as 
> orthogonal.  So I think I get it.  Thanks, all!
> 
> 73,
> Mike ab3ap
> 
>> On 04/07/2018 03:05 PM, Cady, Fred wrote:
>> [...]  I found during my 40+ years as an EE prof that there are
>> various ways that people learn.Some are visual learners and learn by seeing 
>> diagrams and images, some can gain comprehension just be reading.Others are 
>> more hands-on learners, needing the “lab experience” to cement their 
>> understanding of the concepts.[...]
>> 73,
>> Fred
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Re: [Elecraft] KX2 go-box

[Ken G Kopp]

What about cooling of the heatsink?

Or is the unit just for "show"?

73!

K0PP

On Sat, Apr 7, 2018, 15:03 John Harper  wrote:

> I thought some here might appreciate the craftsmanship that goes into Hans'
> W1JSB latest creation:
>
> https://www.youtube.com/watch?time_continue=3=1mmoDzQYhms
>
> 73,
>
> John AE5X
> https://ae5x.blogspot.com
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[Elecraft] K3 Preamp 2

[Barry Simpson]

I often see posts from US stations questioning the need for any preamp below 
20m and just now challenging the need for preamp 2 on 10m.

That may be all well and good in the land of the huge antennas and the 
thousands of big signals from the US and Europe but let me tell you that down 
here, when you are scratching around for weak signals on 10m and 12m, preamp 2 
makes a world of difference.

Barry Simpson VK2BJ.

Sent from my iPad
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[Elecraft] KX2 go-box

[John Harper]

I thought some here might appreciate the craftsmanship that goes into Hans'
W1JSB latest creation:

https://www.youtube.com/watch?time_continue=3=1mmoDzQYhms

73,

John AE5X
https://ae5x.blogspot.com
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Re: [Elecraft] Fred's vs Elecraft manuals de KE7X

[Mike Markowski]

Many thanks to everyone who responded!  I have a clearer understanding now.

It reminds me of my own EE student days.  I found learning electronics 
challenging because our texts started with math and the useful 
properties of this or that circuit kind of fell out as a side effect or 
mini-miracle.  Then I discovered the text 'The Art of Electronics' which 
approached it from a different angle and things clicked much more 
naturally for me.


I like Skip K6DGW's description of the two approaches to Elecraft as 
orthogonal.  So I think I get it.  Thanks, all!


73,
Mike ab3ap

On 04/07/2018 03:05 PM, Cady, Fred wrote:

[...]  I found during my 40+ years as an EE prof that there are
various ways that people learn.Some are visual learners and learn by 
seeing diagrams and images, some can gain comprehension just be 
reading.Others are more hands-on learners, needing the “lab experience” 
to cement their understanding of the concepts.[...]


73,

Fred

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Re: [Elecraft] Fred's vs Elecraft manuals de KE7X

[Cady, Fred]

What makes the KE7X Elecraft book different than the Elecraft owner’s manuals?
Let’s start by saying the KE7X books do not have any information needed to 
operate the radios that is not in the Elecraft Owner’s manuals.  Owner’s 
manuals are by design succinct and concise descriptions of the controls and 
features of the radio.  Elecraft manuals are very well done but I found during 
my 40+ years as an EE prof that there are various ways that people learn.  Some 
are visual learners and learn by seeing diagrams and images, some can gain 
comprehension just be reading.  Others are more hands-on learners, needing the 
“lab experience” to cement their understanding of the concepts.  I’m a visual 
and hands-on learner.  When I first got my K3 I had trouble understanding how 
the sub receiver worked and what the different antenna switching options were.  
So I drew it out in a diagram and that made it much more clear to me.  If that 
helped me, wouldn’t it help others?  So the idea of a K3 book was born.  (The 
original title was to be “The Hitchhiker’s Guide to the K3” but I got talked 
out of that!)
The concept that takes these books beyond the Elecraft manuals is support for 
the visual, reading, and doing learning styles.There are many, many 
diagrams.   In the K3S book there are 131 diagrams, 16 on the sub receiver 
alone.  There are expanded explanations (and diagrams) for all radio operations 
and in-depth explanations of topics such as the various controls for the 
receiver’s AGC.  And to top it all off, most topics have a “lab exercise” that 
you can do sitting at your radio to make sure you understand the concept.
The printed versions of the books all have an index and, of course, the pdf 
versions can be easily searched for what you are looking for.
www.ke7x.com has more information on all 12 current KE7X 
Elecraft books with tables of contents and ordering information.


73,

Fred


From: elecraft-boun...@mailman.qth.net  on 
behalf of Mike Markowski 
Sent: Saturday, April 7, 2018 12:04 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Fred's vs Elecraft manuals

Fred and all,

Can you describe in general how your books differ from Elecraft manuals?
  I haven't found Elecaft manuals to be lacking and very much like how
direct and concise they are.  Your books are popular, making me wonder
what you've added?

Tnx es 73!
Mike ab3ap

On 04/07/2018 11:39 AM, Cady, Fred wrote:
> Hi Neil
>
> No never did a K2 book.
>
> Sorry the 15% discount at Lulu doesn't apply to pdf files.
>
> The K3S, KX3, and KX2 hard copy books are only available through Elecraft.  
> Sorry about that too.
>
> Fred KE7X
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Re: [Elecraft] Fred's vs Elecraft manuals

[David Gilbert]

Fred's manuals are more detailed and give more background on how or why 
you might use a particular control instead of just what it does.  I own 
his manuals for both the K3 and the KX2 and they were well worth it.


Dave



On 4/7/2018 11:04 AM, Mike Markowski wrote:

Fred and all,

Can you describe in general how your books differ from Elecraft 
manuals?  I haven't found Elecaft manuals to be lacking and very much 
like how direct and concise they are.  Your books are popular, making 
me wonder what you've added?


Tnx es 73!
Mike ab3ap

On 04/07/2018 11:39 AM, Cady, Fred wrote:

Hi Neil

No never did a K2 book.

Sorry the 15% discount at Lulu doesn't apply to pdf files.

The K3S, KX3, and KX2 hard copy books are only available through 
Elecraft.  Sorry about that too.


Fred KE7X

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Re: [Elecraft] Fred's vs Elecraft manuals

[Fred Jensen]

Fair question.  From my perspective...

Elecraft manuals are well written and follow the pattern of all 
manufacturer's User Manuals.  They are like the "dash one" in the set of 
Air Force Tech Orders for some piece of equipment ... "How to fly the 
airplane."  They describe how to configure cables and other hardware, 
how to use the menu system, and how to operate the radio.


Fred's book approaches it sort of at right angles to Elecraft, delving 
much more deeply into why you would want to choose one configuration 
over another, the practical effects of various configuration options, 
etc.  It gives alternate tables and organization for some of the data 
that gets buried in larger tables in the Elecraft manual.  The Elecraft 
manual will tell you some setting is remembered by band ... Cady will 
follow that through with what it means in operational situations.


They are very much complementary, and I find I use them about equally.  
I have the spiral bound book, it lays flat on the desk and I can make 
notes in it.


73,

Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 4/7/2018 11:04 AM, Mike Markowski wrote:

Fred and all,

Can you describe in general how your books differ from Elecraft 
manuals?  I haven't found Elecaft manuals to be lacking and very much 
like how direct and concise they are.  Your books are popular, making 
me wonder what you've added?


Tnx es 73!
Mike ab3ap

On 04/07/2018 11:39 AM, Cady, Fred wrote:

Hi Neil

No never did a K2 book.

Sorry the 15% discount at Lulu doesn't apply to pdf files.

The K3S, KX3, and KX2 hard copy books are only available through 
Elecraft.  Sorry about that too.


Fred KE7X

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Re: [Elecraft] OE3HKL's Measurements

[Erik Basilier]

Igor, are you saying that you could not view the numbers at his website? If 
anyone has difficulty getting to the numbers, let me know and I can repeat them 
here, but for now I will just refer you to the website again.
Here is a short url for that page:
https://tinyurl.com/ycn9kbss
Scroll down to the first handwritten table. The left-hand column lists the 
different radios tested. 3 columns to the right shows test results for 
different pulse frequencies. Presumably, a higher pulse frequency means the 
interference spectrum is more spread out around the wanted signal. However, 
this is not quantified or described in detail. Remember, results of this test 
method are strongly dependent on the design of the pulse generator etc, so the 
if someone would like to duplicate or compare to his numbers, they would have 
to duplicate his exact equipment, or come up with a new similar test setup that 
could be regarded as a standard. For each radio, there are two rows of results 
(for each pulse frequency). The first row represents the radio without 
preselector (but modified to add a roofing filter, except in the case of the 
IC-7300). The second row represents the same radio with the addition of the 
preselector, which is his personal design, also described at the website. 
 If I am not mistaken, the preselector is entirely passive. All the result 
numbers are negative dBm values. This means that a smaller negative number 
represents a stronger interference signal that is in some sense tolerated. E.g. 
-20dBm is a great result, but -50dBm is a poor result. None of the numeric 
results can be translated into, or compared with, numbers published by Sherwood 
or the ARRL. However, he makes a pretty good case that his measurement method 
might be "better" than those conventional measurements in representing the 
performance characteristics that are relevant in practical ham use under heavy 
interference from close-in strong signals. For the ARRL or Sherwood to adopt 
his approach they would likely have to invest in additional test equipment 
including custom-built items, and justify a standard method of doing this kind 
of testing, so I am not holding my breath. The inclusion of the IC-7300 shows 
that the website content is not very old, but other than the K3 
 he has not included any of the several radios on the market today that 
incorporate roofing filters as a standard part of the design. Perhaps we could 
hope that some kind hams in Europe would lend him additional radios for testing 
with his unique test equipment. As to his own conclusions, they should be 
covered by the text I already translated. Are any of his statements (as 
translated) unclear? Remember, no real world radio has a "true" performance 
level even in principle. Every time we look at performance numbers, they 
reflect imperfect concepts developed in our small human minds, whether they are 
considered "standard" or not. A concept such as "better" is usually not an 
objective way of describing things.

73,
Erik K7TV

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Igor Sokolov
Sent: Saturday, April 07, 2018 6:49 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OE3HKL's Measurements

Eric,

Can you possible give a summary of the results of his measurements and 
conclusions he has made?

73, Igor UA9CDC




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Re: [Elecraft] Fred's vs Elecraft manuals

[donovanf]

Hi Mike, 


Fred's K3 manual is much more detailed than the Elecraft manual. 
I rarely use my Elecraft manual. 


My favorite is the pdf edition which is computer searchable 


You won't regret your investment! 


73 
Frank 
W3LPL 

- Original Message -

From: "Mike Markowski"  
To: elecraft@mailman.qth.net 
Sent: Saturday, April 7, 2018 6:04:28 PM 
Subject: Re: [Elecraft] Fred's vs Elecraft manuals 

Fred and all, 

Can you describe in general how your books differ from Elecraft manuals? 
I haven't found Elecaft manuals to be lacking and very much like how 
direct and concise they are. Your books are popular, making me wonder 
what you've added? 

Tnx es 73! 
Mike ab3ap 

On 04/07/2018 11:39 AM, Cady, Fred wrote: 
> Hi Neil 
> 
> No never did a K2 book. 
> 
> Sorry the 15% discount at Lulu doesn't apply to pdf files. 
> 
> The K3S, KX3, and KX2 hard copy books are only available through Elecraft. 
> Sorry about that too. 
> 
> Fred KE7X 
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[Elecraft] XV-144

[NOEL POULIN]

Hello,
Am selling my Elecraft Transverter XV-144.
Never been assembled...bought last August 2017.
New  in the box..
Asking only $450.00 CAN DLS..plus ship...
A real deal
PLease contact me off line...for more details and pics
Noel
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Re: [Elecraft] Fred's vs Elecraft manuals

[Mike Markowski]

Fred and all,

Can you describe in general how your books differ from Elecraft manuals? 
 I haven't found Elecaft manuals to be lacking and very much like how 
direct and concise they are.  Your books are popular, making me wonder 
what you've added?


Tnx es 73!
Mike ab3ap

On 04/07/2018 11:39 AM, Cady, Fred wrote:

Hi Neil

No never did a K2 book.

Sorry the 15% discount at Lulu doesn't apply to pdf files.

The K3S, KX3, and KX2 hard copy books are only available through Elecraft.  
Sorry about that too.

Fred KE7X

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Re: [Elecraft] 15% discount KE7X book Code is FWD15

[Cady, Fred]

Hi Chuck,


The K3S and P3 (full title is "The K3S and P3 -- Getting the Most from your 
High Performance Station") spiral bound hard copy is available on the Elecraft 
website (http://www.elecraft.com/order_form_books.htm scroll down to Fred Cady 
books).  PDF is available at http://www.lulu.com/

(Search for Elecraft).  Table of contents and other information is found at 
http://www.ke7x.com/the-elecraft-k3s-book


The K3 3rd edition book (full title is "The Elecraft K3 and P3 -- Incorporating 
the KXV3B and KIO3B") spiral bound hard copy and pdf versions are available at 
Lulu.  More information and TOC at http://www.ke7x.com/home/guide-to-the-k3.


I know it is a bit confusing so I hope this helps.

73,

Fred KE7X



From: hawley, charles j jr 
Sent: Saturday, April 7, 2018 7:22 AM
To: Cady, Fred; Elecraft list
Subject: RE: 15% discount KE7X book Code is FWD15

I was looking for the latest K3S book and don't see it...specifically titled as 
"K3S and P3" as is advertised on the Elecraft site under part number E740243. 
When I click on that part number, there is no Cady book titled as such.
I have also looked on the Lulu.com site and don't see that specific title. I do 
see "The Elecraft K3 and P3" 3rd Edition.
I have "The Elecraft K3" 2nd Edition and was thinking of an updated book for 
the K3S including revision firmware updates.
Is the "The Elecraft K3 and P3" 3rd Edition such a book?

Thank you and 73,

Chuck KE9UW

From: elecraft-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net] on 
behalf of Cady, Fred [fc...@montana.edu]
Sent: Friday, April 06, 2018 8:46 PM
To: Elecraft list
Subject: Re: [Elecraft] 15% discount KE7X book Code is FWD15

Forgot to give it before.



From: elecraft-boun...@mailman.qth.net  on 
behalf of Cady, Fred 
Sent: Friday, April 6, 2018 6:35 PM
To: Elecraft list
Subject: [Elecraft] 15% discount KE7X book

[This sender failed our fraud detection checks and may not be who they appear 
to be. Learn about spoofing at http://aka.ms/LearnAboutSpoofing]

www.lulu.com has a 15% discount going on there for KE7X 
Elecraft books including the 3rd Edition K3 book (doesn't apply for K3S, KX3 
and KX2 books carried by Elecraft).

See www.ke7x.com for more information.

73,

Fred KE7X


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Re: [Elecraft] 15% discount KE7X book

[Cady, Fred]

Hi Neil

No never did a K2 book.

Sorry the 15% discount at Lulu doesn't apply to pdf files.

The K3S, KX3, and KX2 hard copy books are only available through Elecraft.  
Sorry about that too.

Fred KE7X




From: elecraft-boun...@mailman.qth.net  on 
behalf of Neil Zampella 
Sent: Friday, April 6, 2018 9:41 PM
To: Elecraft list
Subject: Re: [Elecraft] 15% discount KE7X book

Hi Fred,

I've got your great KX3 book, and your 'assembling the KX3 line station'
book (from Lulu).   Did you ever create a K2 book, and if so, is it
still available anywhere??

73,

Neil, KN3ILZ


On 4/6/2018 8:35 PM, Cady, Fred wrote:
> www.lulu.com has a 15% discount going on there for KE7X 
> Elecraft books including the 3rd Edition K3 book (doesn't apply for K3S, KX3 
> and KX2 books carried by Elecraft).
>
> See www.ke7x.com for more information.
>
> 73,
>
> Fred KE7X
>
>
>

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Re: [Elecraft] OE3HKL's Measurements

[Igor Sokolov]

Eric,

Can you possible give a summary of the results of his measurements and 
conclusions he has made?


73, Igor UA9CDC


07.04.2018 8:41, Erik Basilier пишет:

Correction:
The sentence:
"However, the improvement from using the preamp shows up only if the
preselector handles large signals at least as well as the rx itself."
Should be replaced by:
"However, the improvement from using the preselector shows up only if the
preselector handles large signals at least as well as the rx itself."

73,
Erik K7TV

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Erik Basilier
Sent: Friday, April 06, 2018 8:28 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OE3HKL's Measurements

Since I do read German, here is my quick attempt to translate the section
("Fazit") where the author summarizes his findings about testing methods and
receiver performance:

"No IP3 value can be derived from the results of this measurement technique
using broadband pulses with a crystal-based notch filter. However, the
results do show the resistance to interference generated from summation of a
broadband interfering spectrum, which seems crucial to me when it comes to
evaluating the interference handling of an SDR with the ADC at the front.
In any case, the listed signal levels (for +10 dB (S+N)/N) provides a very
good way to compare the relative performance of the tested receivers; the
higher the listed signal level (dBm), the better the better the performance
in handling strong signals.
Roofing filter quality can be observed by proper selection of pulse
frequency for close-in measurement (use e.g. 2 kHz). This is in contrast to
what can be done with two-signal testing (even using many different
frequencies).
In particular, the pulsing measurement technique illustrates how the use of
a preselector influences receive performance. Earlier one could only rely on
subjective impresisons in practical use. Our results show that use of a
preselector always makes sense, even when used with the very best
receivers!!! Even with the RX-OE3HKL receiver design which by itself can
handle levels that are up to 26 dB higher, improvements up to 9 dB from the
preselector are seen. Notable is the performance of the IC-751A with
preselector and roofing filter: Results are almost as good as those of my
own receiver design. However, in contrast to the situation when using the
2-signal method of testing, when using the pulse signal, without the
preselector, the roofing filter doesn't yield much improvement. Apparently
the reason is that the broadband signal quickly overloads the front end
circuits. Without using the broadband pulse signal it would not be possible
to reconcile lab measurements with real-world reception results seen when
using the 2x120m V-antenna! However, the improvement from using the preamp
shows up only if the preselector handles large signals at least as well as
the rx itself.
The K3 is by far the best of the commercial units, and without having to be
modified. This result is confirmed by practical experience in reception
testing using the 120m-V-beam during a contest. Results improved by another
2-4 dB after a firmware update was performed (see the red corrections).
The IC-7300 clearly performs more poorly than the analog radios with roofing
filters, in practical reception as well as in lab measurement. When the
preselector is added, it partly outperforms the FT-1000 Field with
preselector and roofing filter. Based on this result, I conclude that an SDR
with the ADC in the front end, when used with good antennas and in the
presence of sftong signals, should if possible only be used in combination
with a preselector.
I would like to establish that the here described test setup with its
broadband discrete signal is a better proxy for real-world interference
signals than is the stochastic noise signal used in Noise Power Ratio
testing. Furthermore, by varying the pulse frequency, one can vary the
intensity of the interference in a way that is clearly quantified by
observing spectrum analyzer output. In contrast, the noise level in NPR
measurement is defined by the high ratio of peak value to rms (10 to 11). In
this scenario t would likely take very expensive equipment to perform
measurements with sufficient accuracy for comparison purposes.
I would also like to mention that NPR measurements at 3dB (S+N)/N will not
be sufficient to take into account the effect of higher-order IM products.
To achieve that, one must increase input levels to the point that a further
increase of 1 dB will lead to a 3 dB increase at the output (3rd order).
This is what it takes to get results from the NPR method to agree with
results from the pulse signal method."

My apologies in advance to OE3HKL for any misinterpretation I might have
made.

73,
Erik K7TV


-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Erik Basilier
Sent: 

Re: [Elecraft] 15% discount KE7X book Code is FWD15

[G4GNX]

FWIW you don't het the Lulu discount on the pdf, only on hard copy.

73,

Alan. G4GNX

-Original Message- 
From: j...@kk9a.com 
Sent: Saturday, April 7, 2018 2:30 PM 
To: elecraft@mailman.qth.net 
Subject: [Elecraft] 15% discount KE7X book Code is FWD15 


I looked for the K3S book a while ago on Lulu during one of these sales
and for some reason only the PDF was available. I wanted a physical book.
It is probably still that way.

John KK9A

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[Elecraft] 15% discount KE7X book Code is FWD15

[j...@kk9a.com]

I looked for the K3S book a while ago on Lulu during one of these sales
and for some reason only the PDF was available. I wanted a physical book.
It is probably still that way.

John KK9A


hawley, charles j jr wrote:


I was looking for the latest K3S book and don't see it...specifically
titled as "K3S and P3" as is advertised on the Elecraft site under part
number E740243. When I click on that part number, there is no Cady book
titled as such.
I have also looked on the Lulu.com site and don't see that specific title.
I do see "The Elecraft K3 and P3" 3rd Edition.
I have "The Elecraft K3" 2nd Edition and was thinking of an updated book
for the K3S including revision firmware updates.
Is the "The Elecraft K3 and P3" 3rd Edition such a book?

Thank you and 73,

Chuck KE9UW

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Re: [Elecraft] 15% discount KE7X book Code is FWD15

[hawley, charles j jr]

I was looking for the latest K3S book and don't see it...specifically titled as 
"K3S and P3" as is advertised on the Elecraft site under part number E740243. 
When I click on that part number, there is no Cady book titled as such.
I have also looked on the Lulu.com site and don't see that specific title. I do 
see "The Elecraft K3 and P3" 3rd Edition.
I have "The Elecraft K3" 2nd Edition and was thinking of an updated book for 
the K3S including revision firmware updates.
Is the "The Elecraft K3 and P3" 3rd Edition such a book?

Thank you and 73,

Chuck KE9UW

From: elecraft-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net] on 
behalf of Cady, Fred [fc...@montana.edu]
Sent: Friday, April 06, 2018 8:46 PM
To: Elecraft list
Subject: Re: [Elecraft] 15% discount KE7X book Code is FWD15

Forgot to give it before.



From: elecraft-boun...@mailman.qth.net  on 
behalf of Cady, Fred 
Sent: Friday, April 6, 2018 6:35 PM
To: Elecraft list
Subject: [Elecraft] 15% discount KE7X book

[This sender failed our fraud detection checks and may not be who they appear 
to be. Learn about spoofing at http://aka.ms/LearnAboutSpoofing]

www.lulu.com has a 15% discount going on there for KE7X 
Elecraft books including the 3rd Edition K3 book (doesn't apply for K3S, KX3 
and KX2 books carried by Elecraft).

See www.ke7x.com for more information.

73,

Fred KE7X


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[Elecraft] K3S in split mode

[Stewart]

Is it possible to configure the K3S to show frequency, in VFO B window, 
during transmit and decode during receive while operating in split mode?


Stew ke4yh

Dunedin, FL


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Re: [Elecraft] [OT] Tektronix 475 Oscilloscope

[George Danner]

Phil,
Almost worth the trip from Georgia - my very favorite roll-around when in 
broadcasting.

The 475 at the transmitter could display the carrier on channel 12.
I get nostalgic when I see test equipment from my younger days.
73
George AI4VZ

-Original Message- 
From: Phil Hystad


I have a Tektronix 475 Oscilloscope that is available to anyone in the 
Seattle area who would be willing to drive to Kirkland to pick it up -- no 
charge.  This is a 200 Megahertz analog scope.


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Re: [Elecraft] K3S Enable Preamp 2 Without Preamp 1

[John Stengrevics]

I have recently been using the 6m ARR GaAsFET Preamp ahead of my K3S.  I also 
find that it has lower noise and perhaps more gain.  The proof is that I have 
been able to work moonrise/moonset EME with it (no elevation on my antenna).

John
WA1EAZ

> On Apr 6, 2018, at 11:16 PM, Jim Brown  wrote:
> 
> On 4/6/2018 5:58 PM, j...@kk9a.com wrote:
>> I have operated from several countries using my K3S and I am never so
>> fortunate to have a noise floor low enough use preamp 2. Most of the time
>> preamp 1 is also off.
> 
> I've had the opposite experience. MDS of the original K3 was woefully poor 
> above 15M, even with the preamp switched in. As luck would have it, I have a 
> very nice ARR GAsFET 6M preamp on the shelf that I'd used in Chicago that I 
> inserted at the RX antenna patch point; I found that it improved the MDS all 
> the way down to 12M. I would have missed a LOT of QSOs without that preamp. 
> Of course, like everyone else, sometimes my noise level is lower than at 
> other times, and a solar system 500 ft from my main antenna raises it by 10 
> dB on 10 and 6 when the sun is hitting it.
> 
> When the K3S was introduced, I quickly replaced the Synth boards and the 
> Transverter board to get that improved preamp, simplifying my RX antenna 
> switching. I do find, though, that the GAsFET preamp has a slightly lower NF, 
> so I continue to use it during the 6M season.
> 
> 73, Jim K9YC
> 
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[Elecraft] K3S Enable Preamp 2 Without Preamp 1

[j...@kk9a.com]

I have never used my K3S higher than 10m. I imagine that 6m (or 2m like
the original poster is using) is a different animal than HF and the higher
gain preamp would be useful.

John KK9A



Jim Brown K9YC wrote:

> I have operated from several countries using my K3S and I am never so
> fortunate to have a noise floor low enough use preamp 2. Most of the time
> preamp 1 is also off.

I've had the opposite experience. MDS of the original K3 was woefully
poor above 15M, even with the preamp switched in. As luck would have it,
I have a very nice ARR GAsFET 6M preamp on the shelf that I'd used in
Chicago that I inserted at the RX antenna patch point; I found that it
improved the MDS all the way down to 12M. I would have missed a LOT of
QSOs without that preamp. Of course, like everyone else, sometimes my
noise level is lower than at other times, and a solar system 500 ft from
my main antenna raises it by 10 dB on 10 and 6 when the sun is hitting it.

When the K3S was introduced, I quickly replaced the Synth boards and the
Transverter board to get that improved preamp, simplifying my RX antenna
switching. I do find, though, that the GAsFET preamp has a slightly
lower NF, so I continue to use it during the 6M season.

73, Jim K9YC

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Re: [Elecraft] Elecraft Digest, Vol 168, Issue 6

[Dave B via Elecraft]

Wayne.

Google's automated translation system does a very good job with that site.

Just copy that link in the left side box at :-  https://translate.google.com

Let it autodetect the source language (it seems to detect German) and
leave the default "English" set above the right side box, then click on
the link in the RIGHT side box, where upon, you'll go to a translated
version of that site.

Even the menu links on the right side of the pages are translated, as
are the contents of said pages.

73.

Dave G0WBX.


On 06/04/18 19:44, elecraft-requ...@mailman.qth.net wrote:
> Here is the correct link:
>
> www.oe3hkl.com
>
> Still looking for an English translation of the Funkamateur article, or at 
> least a summary.
>
> 73,
> Wayne
> N6KR

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