[Elecraft] K3 and general coverage

2007-05-15 Thread wayne burdick

Bob Nielsen wrote:



That lead to a question I hadn't considered before.  How is general 
coverage in the vicinity of the first i.f. achieved?


Bob, N7XY


Hi Bob,

As Greg (AB7R) mentioned, it isn't possible for the K3 to provide 
coverage in the vicinity of our first I.F., 8.215 MHz. We felt that 
this was a small price to pay, given our primary goal of offering an 
excellent ham-band transceiver. However, all other bands of interest 
for general coverage from 0.5 to 30 MHz can be tuned. If you have the 
KBPF3 option installed (on either or both receivers), its filters will 
automatically be switched in to cover the gaps between the narrow 
ham-band filters. But even without the KBPF3 you'll have useful 
sensitivity in shortwave broadcast segments near ham bands.


73,
Wayne
N6KR


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[Elecraft] Re: HF Bandpass filters

2007-05-15 Thread wayne burdick

Ken Kopp wrote:


For the several who have asked ...

My bandpass filters are made by I.C.E.  ...


I ... and most users ... place them in the antenna port of the 
transceiver


Ken,

I just wanted to reiterate that the K3's KXV3 option module facilitates 
the use of these filters. Simply connect them between the RX ANT IN and 
RX ANT OUT jacks. Then, whenever you select RX ANT from the front 
panel, the in-line band-pass filter would be switched in.


Of course we hope that you'll find the K3's dynamic range high enough 
that such filters are not needed as often  :)


73,
Wayne
N6KR


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[Elecraft] K3 Pictures Please

2007-05-15 Thread Simon Brown (HB9DRV)
Looking forward to many good quality, high-resolution pictures of the K3  
Elecraft stand from FDIM and Dayton.


I can always put them in a gallery irrespective of size - just send to 
[EMAIL PROTECTED] if needed.


Should we start a sweepstake on the number of K3 orders that Elecraft take 
at Dayton?


Simon Brown, HB9DRV 


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Re: [Elecraft] Re: HF Bandpass filters

2007-05-15 Thread dj7mgq
Hallo,

 Of course we hope that you'll find the K3's dynamic range
 high enough that such filters are not needed as often  :)

High power bandpass filters also reduce the wide band noise which any PA will
produce. To be effective in this role, the filters must be in line while the TX
is doing its thing.

This does not really have anything to do with the dynamic range of the RX but
with the noisiness of the transmitter.

vy 73 de toby
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Re: [Elecraft] K3 and general coverage

2007-05-15 Thread Julian, G4ILO
What will the ATU do in general coverage mode? I guess the best thing would 
be to switch straight through, but would you have to go into a menu and do 
that manually whenever you tune to a non-ham band?

Julian, G4ILO

wayne burdick wrote:

Hi Bob,

As Greg (AB7R) mentioned, it isn't possible for the K3 to provide coverage 
in the vicinity of our first I.F., 8.215 MHz. We felt that this was a small 
price to pay, given our primary goal of offering an excellent ham-band 
transceiver. However, all other bands of interest for general coverage from 
0.5 to 30 MHz can be tuned. If you have the KBPF3 option installed (on 
either or both receivers), its filters will automatically be switched in to 
cover the gaps between the narrow ham-band filters. But even without the 
KBPF3 you'll have useful sensitivity in shortwave broadcast segments near 
ham bands.


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[Elecraft] RE: K3 Pictures Please

2007-05-15 Thread Per Brix

 Should we start a sweepstake on the number of K3 orders that Elecraft take at 
 Dayton?


I have no doubt lots of K3's will be sold at Dayton. Being burnt by a FT-2000 
(which I sold quickly) I have been lurking here for a while. Then yesterday I 
saw that 1st production batch was sold out. New orders are planned for 
production/delivery in September. So I decided it was time to place my order 
before Dayton as I want my K3 before Xmas.

73's, Per
oz5abo
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[Elecraft] 1st production run full - details?

2007-05-15 Thread DOUGLAS ZWIEBEL

Wayne, Eric, et al:

Okay, it is now posted on the order form that:
* Our July/August production run is now full. New K3 orders received
after 1800Z 5/14/07 will ship from our second production run. (Sept.)

Come on guys (gals)...how many radios?  Why would that be proprietary?

de Doug KR2Q
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[Elecraft] STOP with the K3 posts already!!

2007-05-15 Thread Darwin, Keith
I don't need a K3
I don't need a K3
I don't need a K3
 
At first, resistance was easy.  But then I'm seeing all the benefits and
how cost-effective it is.
And how it is so wonderfully designed
And how flexible and robust the filtering scheme is
And the sidetone is going to be pure (pure heaven)
And support / repairs will be a breeze.
And ...
 
I'm getting weak and you guys are NOT helping!
 
I need a K3
I need a K3
I need a K3
 
Someone please take my Visa card away before it's too late!
 
LOL!
 
- Keith N1AS -
- K2 5411.ssb.100 -
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Re: [Elecraft] H mode mixer

2007-05-15 Thread J F
As I recall Jim, he championed the 220, Use it or
Lose It campaign. There was a lot of commercial
interest in the band in the 70s, probably the same is
true now as well.

Folks had strong emotions, one way or the other, when
it came to Wayne. 

73,
Julius
n2wn

--- [EMAIL PROTECTED] wrote:

 In a message dated 5/14/07 8:43:46 AM Eastern
 Daylight Time, 
 [EMAIL PROTECTED] writes:
 
 
  We do owe Wayne gratitude for keeping 220 mHz
  available for ham use.
  
 
 How did he do that?
 
 73 de Jim, N2EY
 
 
 **
  See what's free at 
 http://www.aol.com.
 

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Re: [Elecraft] STOP with the K3 posts already!!

2007-05-15 Thread Simon Brown (HB9DRV)
If you think it's bad now, just wait until those of us with the necessary IQ 
to order early start posting questions when we receive our packages. Even 
though you don't need a K3 you want one :-)


Simon Brown, HB9DRV

- Original Message - 
From: Darwin, Keith [EMAIL PROTECTED]



I don't need a K3

[sad story chop] 


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[Elecraft] Re: OT - 73 Magazine (was H mode mixer)

2007-05-15 Thread J F
Hi Brian,

 Wayne was interesting to work for. He was aptly
 noted for being a  
 cheapskate and it turned out that was true. OTOH,
 one time when I was  
 up there he took me out to lunch and we had a great
 argument about  
 the future of amateur radio. (Several people in the
 office dropped in  
 a dead faint when they learned that Wayne actually
 bought me, an  
 employee, lunch. :-) I was, of course, suggesting
 that digital  
 communications was the future of amateur radio. He
 wasn't sure. Seems  
 we were both at least part right because here it is
 18 years later  
 and we are only just starting to see changes in the
 communications  
 landscape.

I met him once very briefly. I was just a kid so other
than him being the publisher of 73 and being
reasonably nice, I can't say I knew him. He stirred
strong emotions one way or the other in the older
hams. The technical hams often dismissed 73 as a bunch
of hoowie. Still a lot of VHF/UHF guys liked the
publication. I certainly enjoyed some of the covers
;o)

 
 Anyway, he sure annoyed the hell out of everyone but
 you have to  
 admit, he had an effect on what we do and how we do
 it.
 
 Never Say Die.

220, Use It or Lose It I still have the button for
this somewhere...

 
 And speaking of digital communications, the loss of
 The Code as a  
 gating factor is going to prompt a shift away from
 CW as the  
 minimalist mode for HF. I believe that PSK31 is
 probably going to  
 slowly take over that position as it can be done
 with equipment  
 almost as simple as a CW rig and provides the same
 level of  
 communications at similar power levels.
 
 (BTW, I am teaching code to my kids at school as I
 want them to be  
 able to build the simplest radio possible to get on
 the air. I just  
 don't think that CW will remain as the mainstay
 last resort  
 communications mode.)

You're probably correct in your assessment on digital
modes. I think the K3 will go a long way in opening up
digital modes for those of us who haven't tried them
yet. Whether is PSK or another protocol, is to be
seen. Judging by the numbers of participants in RTTY
contests these days, it is a fast growing segment.
Change is good, unsettling yes, but the possibilities
are worth the uncertainty...

73,
Julius
n2wn
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Re: [Elecraft] STOP with the K3 posts already!!

2007-05-15 Thread Thom LaCosta

On Tue, 15 May 2007, Darwin, Keith wrote:


I don't need a K3


Correctyou WANT a K3!



Someone please take my Visa card away before it's too late!


What you most likely need to do is check to see if one of your cards offers 
the extension of the warranty(g).


Want trumps Need

73,Thom-k3hrn
www.zerobeat.net Home of QRP Web Ring, Drakelist home page,Drake Web Ring,
QRP IRC channel, Drake IRC Channel, Elecraft Owners Database
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Re: [Elecraft] STOP with the K3 posts already!!

2007-05-15 Thread dj7mgq
Or even worse, when we start posting that we *have* received our packages...


 If you think it's bad now, just wait until those of us with the necessary IQ
 to order early start posting questions when we receive our packages. Even 
 though you don't need a K3 you want one :-)
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Re: [Elecraft] STOP with the K3 posts already!!

2007-05-15 Thread Thom LaCosta

On Tue, 15 May 2007, Simon Brown (HB9DRV) wrote:



Even though you don't need a K3 you want one :-)


And you can blame it all on the Aptos Money Magnet!

73,Thom-k3hrn
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Re: [Elecraft] The Lowly Appliance Operator Ponders Filters

2007-05-15 Thread Don Wilhelm

Thom,

Let me try *my* recommendations for what I believe is your situation.
First, you live in or near an urban environment, so I expect you have 
several hams near you with strong signals which might interfere - so if 
you want to operate easily on CW in the presence of S-9++ signal on the 
band, I would recommend a 400 or 500 Hz filter.  You may even want an 
alternate selection of a 200 Hz width if the strong signal situation is 
really bad.


If you want to operate digital modes (now made much easier with the K3 
and possible even without a computer), I would want to have the 200 Hz 
filter for that operating mode (it will also serve as a narrow filter on 
CW) - there are just too many folks running higher powers on those modes 
who seem to pop up right next to the signal that you are trying to copy.


Of course, with a narrow filter working digital modes, you will not be 
able to 'click and work' within the full 3 kHz waterfall width - you 
will need to tune the desired signal with the VFO into the more narrow 
filter width.  I do that already with the K2 using narrow filters for 
PSK31, so for me it is no change from my normal operation.


For the sub-receiver, ask yourself similar questions.  1) What modes 
will I be using the sub-receiver for?  2) How much de-sensing of the 
receiver from strong nearby am I willing to tolerate?  When you have the 
answers to those two questions, you will be able to decide what filter 
widths are needed there.


Notice that the reasons for choosing the filters are different than 
simply how narrow a filter do you want to use - the DSP certainly can 
reduce the bandwidth to a very narrow slice, but what the hardware 
filters do is to keep strong undesired signals out of the DSP.  You may 
never notice the lack of a narrow filter if you never try to work a weak 
signal or if you never encounter a strong interfering signal near your 
operating frequency (static noise is an 'interfering signal' too, but is 
broadbanded) - but for operation on a crowded band or in the midst of 
static, the narrow filters will clean it up easier than any other method 
and allow you to work those weak ones.


73,
Don W3FPR

Thom LaCosta wrote:
When technical smarts were issued, I had to be hiding behind the door.  
All of this filter stuff is way over my head(as are most things more 
complicated than light switches(on-off are OK, three-ways are a 
challenge)).


Based on what's available for the K3, what would be an optimal choice 
for someone who mostly operates CW, some SSB, would like to try data, 
and avoids contests?


It's not very often that I use the narrowest filter in the K2 for 
cwand I use an Autek audio filter(complete with ringing and ac hum).


Perhaps what I'm asking is like going into an auto dealer, looking at a 
Lamborghetta and asking if I can install a Muntz TV in the back seat.


It's not that I wouldn't buy filters...it's more like when I go to a 
museum of modern artI am too ignorant to know if the painting of the 
sun, which appears to be a big orange circle, is hung upside down.



Thom

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[Elecraft] Re: Elecraft Digest, Vol 37, Issue 27

2007-05-15 Thread Giancarlo Moda
Message: 24
Date: Mon, 14 May 2007 11:14:13 -0500
From: Sam Morgan [EMAIL PROTECTED]
Subject: Re: [Elecraft] H mode mixer
To: J F [EMAIL PROTECTED]
Cc: Elecraft Discussion List
elecraft@mailman.qth.net
Message-ID: [EMAIL PROTECTED]
Content-Type: text/plain; charset=ISO-8859-1;
format=flowed

J F wrote:
 Actually Geoff, the ARRL has a decent deal going on
 for RSGB membership:
 
 RadCom Magazine (RSGB)
 -- Subscriptions are now available on an exclusive
 deal from ARRL! 

any comments on which one would be your pick
if you could only read one or the other?
QST or RadCom
-- 
GB  73's
KA5OAI
Sam Morgan


Hi Sam,

your question is right.

I was an ARRL Member since 1963 and become an RSGB
Member end of 1965.
I am ARI member since 1959 and have been members of
another European Radio Society and HamRadio.
I stopped my mebership with ARRL in 1980 and I am
still a Member of RSGB since 1965.
Why I stopped ARRL membership? The reasons are two:
Having a family with XYL, 3 kids and a dog I had to
limit expenses. QST was becoming large with a lot of
advertisements and simple circuits while RSGB Bulletin
and later RadioCommunication, RadCom ... was improving
in projects and interesting columns. The most
important column for me was and still is Technical
Topics managed by Pat Hawker, G3VA.  
Maybe RadCom had and as project more European like
(???). In 1980 I kept HR for a while and then stayed
with ARI and RSGB memberships.
I believe QST became poor when somebody in ARRL to
make more money created QEX
Later, duirng my staying in France I become member of
the French Society, REF.
Today I have investments in ARI (RadioRivista), RadCom
RSGB and SPRAT the quarterly magazine of G-QRP Club.

I suggest to those interested in solder smoking and
fiddling with homebrewing to become member of RSGB and
possibly with G-QRP Club too

73

Gian
I7SWX



   
Ready
 for the edge of your seat? 
Check out tonight's top picks on Yahoo! TV. 
http://tv.yahoo.com/
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[Elecraft] OT: balun rating exceeded

2007-05-15 Thread Mike Markowski
The following happened to me a few years ago as a brand new ham in my
pre-Elecraft days and I wonder if anyone can explain to me the details.  I
apparently had high swr and exceeded the rating on my balun.  It suffered
accordingly but didn't completely fail.  The result was when I transmitted cw on
40m an internal fuse would blow in the stereo which was on in the next room
room.  It took two go rounds before I caught onto the cause and effect...  A new
 better balun cured the problem.

At the time I had a Zepp (135') and 4:1 balun at the house entrance.  I assume
the ruined balun was emitting all sorts of RF that the stereo amplifier picked
up, tried to amplify, and couldn't.  But I don't understand exactly what would
make it draw that much current.  Can someone enlighten me?

By the way, since then I put up a dipole, halfwave for 160m, about 200' behind
the house.  That's what I should have begun with.

Thanks!
Mike ab3ap
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RE: [Elecraft] The Lowly Appliance Operator Ponders Filters

2007-05-15 Thread Brett gazdzinski
Why not just order the basic ssb filter (2.7 KHz) and
see how it does.
If you want to use FM or AM, get those filters as you
need them to TX using those modes.

I expect the 2.7 filter will do fine for everyone other
than the DX and contest guys.

I suspect the K3 with the 2.7 filter will work as good or better
then most other $2000 to $3000.00 radios out there.

When I do my casual CW listening on (mostly) 80 and 40 meters,
I have the K2 in 1.4 KHz and don't often have any problems with copy.

The K3 2.7 KHz filter is just the first filter, unless 
you have real strong local signals close, you likely wont have
any problems.

Now if you often find yourself working a signal and having
a real strong signal very close, you might think about
something narrower...

I live in a very suburban setting, and rarely have anything
strong close to what I am listening to.

Last night I was surprised to copy a slow signal
on 40 meters that was about 40 over, I wrote the call 
down, but its at home...I must look it up.
I don't think the bar graph ever went up so high before!

I did NOT notice any problems from it on other signals.

Last night was a great slow code night for some reason,
slow for me is 10 to 15 wpmI STILL have to count some
of the numbers!

Filters seem like they would make great birthday or fathers day
gifts!

Brett
N2DTS




  When technical smarts were issued, I had to be hiding 
 behind the door.  
  All of this filter stuff is way over my head(as are most 
 things more 
  complicated than light switches(on-off are OK, three-ways are a 
  challenge)).
  
  Based on what's available for the K3, what would be an 
 optimal choice 
  for someone who mostly operates CW, some SSB, would like to 
 try data, 
  and avoids contests?
  
  It's not very often that I use the narrowest filter in the K2 for 
  cwand I use an Autek audio filter(complete with ringing 
 and ac hum).
  
  Perhaps what I'm asking is like going into an auto dealer, 
 looking at a 
  Lamborghetta and asking if I can install a Muntz TV in the 
 back seat.
  
  It's not that I wouldn't buy filters...it's more like when 
 I go to a 
  museum of modern artI am too ignorant to know if the 
 painting of the 
  sun, which appears to be a big orange circle, is hung upside down.
  
  
  Thom
 ___
 

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RE: [Elecraft] OT: balun rating exceeded

2007-05-15 Thread Brett gazdzinski
 

What is the benefit of a balun?
I cant run them, as I run legal limit AM which
will toast any balun I ever heard of.

At 100 watts, or QRP, RF in the house cant be an issue,
I don't have problems with the AM and the G5RV right over the house.

I would think it would just add more loss.

I used to have resonant 80 and 40 meter dipoles, but took
them down and built a home made G5RV, #12 wire for the open wire
line, and only about 20 feet of RG214 coax into the tuner
or directly into the K2 with its built in atu.
I will have very high swr on both the open wire line
(does not matter as there is almost no loss),
and the RG214, but there is only 20 feet of that, so I would
guess the loss is slight.

Now I could fit a balun if I just used the K2, but what
would be the advantage?

I hear you should never run a balun with any swr, the losses
go way up. I think they now make tuners with the balun
before the tuner (rig, balun, tuner, antenna) that works
well


Brett
N2DTS




 
 The following happened to me a few years ago as a brand new ham in my
 pre-Elecraft days and I wonder if anyone can explain to me 
 the details.  I
 apparently had high swr and exceeded the rating on my balun.  
 It suffered
 accordingly but didn't completely fail.  The result was when 
 I transmitted cw on
 40m an internal fuse would blow in the stereo which was on in 
 the next room
 room.  It took two go rounds before I caught onto the cause 
 and effect...  A new
  better balun cured the problem.
 
 At the time I had a Zepp (135') and 4:1 balun at the house 
 entrance.  I assume
 the ruined balun was emitting all sorts of RF that the stereo 
 amplifier picked
 up, tried to amplify, and couldn't.  But I don't understand 
 exactly what would
 make it draw that much current.  Can someone enlighten me?
 
 By the way, since then I put up a dipole, halfwave for 160m, 
 about 200' behind
 the house.  That's what I should have begun with.
 
 Thanks!
 Mike ab3ap
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Re: [Elecraft] STOP with the K3 posts already!!

2007-05-15 Thread David Powell
Keith

There's only one cure for these disturbing feelings.

I think you know what it is.

Just quietly submit your order, and you'll feel fine again.

73
David
G3XLW

Darwin, Keith [EMAIL PROTECTED] wrote :

 I don't need a K3
 I don't need a K3
 I don't need a K3
  
 At first, resistance was easy.  But then I'm seeing all the benefits and
 how cost-effective it is.
 And how it is so wonderfully designed
 And how flexible and robust the filtering scheme is
 And the sidetone is going to be pure (pure heaven)
 And support / repairs will be a breeze.
 And ...
  
 I'm getting weak and you guys are NOT helping!
  
 I need a K3
 I need a K3
 I need a K3
  
 Someone please take my Visa card away before it's too late!
  
 LOL!
  
 - Keith N1AS -
 - K2 5411.ssb.100 -




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Re: [Elecraft] OT: balun rating exceeded

2007-05-15 Thread Jozef Hand-Boniakowski
A few years back I bought a Buxcom G5RV and running 600 watts into it, 
the balun that it came with was toast.  I replaced it with 10 turns of 
coax wrapped around a Folger's coffee can.  Reading what G5RV had 
written about his antenna, he recommended that a balun not be used with 
his antenna.  See last link at 
http://www.metaphoria.us/hamradio/ham_radio.htm


Jozef WB2MIC


Brett gazdzinski wrote:
 


What is the benefit of a balun?
I cant run them, as I run legal limit AM which
will toast any balun I ever heard of.

At 100 watts, or QRP, RF in the house cant be an issue,
I don't have problems with the AM and the G5RV right over the house.

I would think it would just add more loss.

I used to have resonant 80 and 40 meter dipoles, but took
them down and built a home made G5RV, #12 wire for the open wire
line, and only about 20 feet of RG214 coax into the tuner
or directly into the K2 with its built in atu.
I will have very high swr on both the open wire line
(does not matter as there is almost no loss),
and the RG214, but there is only 20 feet of that, so I would
guess the loss is slight.

Now I could fit a balun if I just used the K2, but what
would be the advantage?

I hear you should never run a balun with any swr, the losses
go way up. I think they now make tuners with the balun
before the tuner (rig, balun, tuner, antenna) that works
well


Brett
N2DTS




  

The following happened to me a few years ago as a brand new ham in my
pre-Elecraft days and I wonder if anyone can explain to me 
the details.  I
apparently had high swr and exceeded the rating on my balun.  
It suffered
accordingly but didn't completely fail.  The result was when 
I transmitted cw on
40m an internal fuse would blow in the stereo which was on in 
the next room
room.  It took two go rounds before I caught onto the cause 
and effect...  A new

 better balun cured the problem.

At the time I had a Zepp (135') and 4:1 balun at the house 
entrance.  I assume
the ruined balun was emitting all sorts of RF that the stereo 
amplifier picked
up, tried to amplify, and couldn't.  But I don't understand 
exactly what would

make it draw that much current.  Can someone enlighten me?

By the way, since then I put up a dipole, halfwave for 160m, 
about 200' behind

the house.  That's what I should have begun with.

Thanks!
Mike ab3ap
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[Elecraft] 73 Mag

2007-05-15 Thread David Yarnes

Brian LLoyd wrote:

Wayne was interesting to work for. He was aptly noted for being a cheapskate 
and it turned out that was true. OTOH, one time when I was up there he took 
me out to lunch and we had a great argument about the future of amateur 
radio. (Several people in the office dropped in a dead faint when they 
learned that Wayne actually bought me, an employee, lunch. :-) I was, of 
course, suggesting that digital communications was the future of amateur 
radio. He wasn't sure. Seems we were both at least part right because here 
it is 18 years later and we are only just starting to see changes in the 
communications landscape.


Anyway, he sure annoyed the hell out of everyone but you have to admit, he 
had an effect on what we do and how we do it.

--
You say Wayne Green was a cheapskate.  I take your word for that.  My 
impression of him was that he was something of an egomaniac as well--but 
very smart!  I got a dose of this at an early age.  I was stationed in 
Berlin ('60 to '62), and one of my duties there was to run the MARS station. 
When The Wall went up, we were suddenly inundated with lots of visiting 
firemen, and Wayne apparently wanted to be one too.  I got a message that 
Wayne and his wife would be making a quick overnight visit to Berlin two 
days hence, and could I make a hotel reservation for them.  The message said 
he would also like to visit our MARS station.  So I made him a reservation 
at one of the nicer hotels in Berlin, and passed the word to the other 5 or 
6 hams in the 592 Signal Co. that Wayne would be visiting.  I also invited 
several of the local DL's, and a half dozen or so showed up.  Wayne came, 
visited with us for only about 20 minutes or so, and then left.  I never 
heard from him again, but later I did hear that he had expected something 
more formal.  I'm not sure what he really expected, particularly on such 
short notice, but what can I say.  I was a little miffed about that for a 
while, but being only 19, perhaps I was a bit naive as well.


But Wayne was a rare fellow to say the least.  And he was very 
entrepeneurial as well.  He was quick off the blocks to get into the 
computer magazine business, and you may recall that when CD's (music) first 
came out he was Johnny On The Spot with a pretty darn good magazine for 
that as well.  But he loved controversy.  Half the stuff he editorialized 
about in 73 had nothing to do with ham radio.  I don't know if he really 
believed all that stuff he was ranting about, but I wouldn't have wanted to 
debate him on any of it either.  At times I couldn't tell if I was reading 
73 Magazine or The New Yorker!  It was hard not to admire the guy though. 
I'll bet he was interesting to work with.


Dave W7AQK



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Re: [Elecraft] OT: balun rating exceeded

2007-05-15 Thread John Magliacane
--- Jozef Hand-Boniakowski [EMAIL PROTECTED] wrote:

 A few years back I bought a Buxcom G5RV and running 600 watts into it, 
 the balun that it came with was toast.  I replaced it with 10 turns of 
 coax wrapped around a Folger's coffee can.

So, you replaced the balun you normally use with New Folger's Crystals.  :-)

Seriously though, I've given this situation a lot of thought, and I'm not
thoroughly convinced an unshielded choke located in the nearfield of a
radiating structure would necessarily attenuate currents flowing on the outside
of the transmission line's shield.

I think even a perfectly functioning, perfectly shielded balun *at the antenna
feedpoint* might be somewhat moot unless the dipole is perfectly straight, and
the feedline is run exactly perpendicular to the dipole (to equalize coupling
to either side of the antenna).

By the same token, I've often wondered just how balanced a balanced feedline
really is under similar circumstances.  Maybe twisting the line might help
improve transmission line balance.  Maybe using a tuner that can compensate for
any voltage/current imbalance might be advantageous, as well.  

There are many complicating factors when it comes to antenna installation and
operation.  Fortunately, few, if any, turn out to be of much significance in
the grand scheme of things...


73, de John, KD2BD


Visit John on the Web at:

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


   
Get
 the Yahoo! toolbar and be alerted to new email wherever you're surfing.
http://new.toolbar.yahoo.com/toolbar/features/mail/index.php
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[Elecraft] K3 VS. Omni VII

2007-05-15 Thread David Yarnes

I am a long time Ten Tec user interested in upgrading.  I have never
used a piece of Elecraft equipment but am very intrigued by the K3.
Are there any Elecraft users who can give me some advice about what I
may expect from the K3 vs the OMNI VII since they are both near the
same price?
Thanks,
Anthony
AA9OC

--

Anthony,

I doubt a fair comparison can be made without hands on with both radios. 
But I strongly suspect that the K3 will outperform the Omni VII, at least in 
most areas.  Personally I think Wayne and Eric had the Orion clearly in 
their crosshairs when they designed the K3.  The Omni VII will surely not be 
equal to the Orion, and the K3 will probably give the Orion a very good run 
for the money.  There have already been inferences that the K3 specs will be 
better than the Orion.  I'm betting they will be.


If Ten-Tec gets its act together on software, the Omni VII will probably be 
a very good radio.  I've been a Ten-Tec fan for a long time, and currently 
have an Orion II.  I really like it!  But I could not resist the K3, and I 
doubt I will be disappointed.  You may spend as much on a K3 as you would an 
Omni VII, but you won't have to pay the price of an Orion II to get 
something that will probably beat both of them.  But if there is any doubt 
in your mind, you might want to wait for the tale of the tape.  I suspect 
that QST (and others) will be all over the K3 as soon as it hits the street. 
It shouldn't take too long thereafter to get some really meaningful 
comparative data.  One thing for sure though, as good as Ten-Tec support has 
been over the years (notwithstanding all the software issues), you won't get 
better support than you get from Elecraft.  And if for some reason you buy a 
K3 and don't like it, I'm reasonably confident you could sell it for little, 
if any, loss as the demand is apparently quite high.  So, if it fits your 
budget, go for the K3!


Dave W7AQK


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[Elecraft] PSK31 AS THE LAST RESORT MODE

2007-05-15 Thread K9ZTV

You can't copy PSK31 in your head.
You can't copy PSK31 from a flashlight.
You can't copy PSK31 from touch.
You can't copy PSK31 from sound.
You can't copy PSK31 to fight sleep on long trips.

You can't send PSK31 by touching two wires together.
You can't send PSK31 by honking a horn.
You can't send PSK31 by pressing a buzzer.
You can't send PSK31 by light bulb.
You can't send PSK31 by touch.
You can't send PSK31 by tapcode in a Vietnamese prison.


73,

Kent  K9ZTV
Jefferson City, MO




Someone wrote:
 


And speaking of digital communications, the loss of
The Code as a  
gating factor is going to prompt a shift away from
CW as the  
minimalist mode for HF. I believe that PSK31 is
probably going to  
slowly take over that position as it can be done
with equipment  
almost as simple as a CW rig and provides the same
level of  
communications at similar power levels.


I just  
don't think that CW will remain as the mainstay
last resort  
communications mode.)




 


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[Elecraft] Why I don't want a K3

2007-05-15 Thread Gary D Krause
Ever since the K3 was announced this reflector has been buzzing with questions 
and speculation about the K3.  It has been dissected, picked apart, put back 
together, etc.  I feel like I know it inside and out and I don't even own one 
yet!  In fact, I'm pretty bored with it.  I'm about ready to put my imaginary 
K3 up for sale.  It does all the stuff you guys say it does and even better. 
So, what's next? :-)


Just kidding!  We are all like a bunch of little kids about a week before 
Christmas.  I'm still building my K2 and I already want a K3!


It will be interesting to see what kind of a ripple the K3 creates in the HF 
market.  Will the other manufacturers respond?  When?  Will they up the bar a 
couple of notches?  Have they been holding back?  Will they re-think their 
designs?  Will they adopt the modular approach?  It's going to be interesting. 
I think Elecraft has really opened up the flood gates and I hope that they 
are very successful.  I know that I will be ordering a K3 for sure.


Gary, N7HTS

  




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Re: [Elecraft] Re: OT - 73 Magazine (was H mode mixer)

2007-05-15 Thread Bob Nielsen
My memory isn't what it used to be, but wasn't Wayne also behind the  
Save 11 movement back in the late 1950s (when it was still a ham  
band, pre-CB)?  I think that was when he was editor of CQ before he  
left and started 73.  I remember there was a big contest held as a  
last hurrah for 11 meters.


Bob, N7XY


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[Elecraft] K3 resale value?

2007-05-15 Thread Darwin, Keith
One of the beautiful things about the K1 / K2 / KX1 series is that they
assembled kits sell for at or near new kit price.  So a schlep like me
can buy a K2, assemble it, use it a bit and get my money back out of it.
These are the only rigs that allow that sort of return.

Enter the K3.  It's not really a kit, at least not to the same level.
I'm expecting the resale value of a K3 will be similar to the resale
value of any other commercially produced ham rig.  Pay $2000 for a new
rig, sell it 1 year later for $1500.

So, the Elecraft entry path will be to start with a K2 (or K1), see if
you like their stuff, then, sell it (getting your $$ back) and buy a K3.

I also wonder what will happen to the used value of a K2 as we'll see an
increase in available rigs.

- Keith N1AS -
- K2 5411.ssb.100 -
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[Elecraft] K3 stock TCXO vs. KTCXO3

2007-05-15 Thread Don Rasmussen
Hi Guys,

The optional TCXO3-1 is rated at a meager 1 ppm
(software corrected to a beautiful .5 ppm.) ;-)

What's the stock K3 TCXO rated, please? 


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Re: [Elecraft] 73 Mag (OT)

2007-05-15 Thread Mike Morrow
Jack wrote:

Wayne owes me about $2500.

Wayne is one simple-minded bombastic buffoon, in addition to his legend 
misdealings with people such as cited above.

For the past couple of decades he has often appeared on late-night kooky stupid 
AM radio with Art Bell, a much kindred spirit.

For one of many similar examples, he claims that the manned lunar landings were 
hoaxes.  His arguments are idiotic, and of the same characteristics as those 
used by the 9/11 controlled demolition conspriracy nitwits.  See: 
http://www.clavius.org/bibwgreen.html .

A way too-kind summary there states:

Self-proclaimed truth seeker Wayne Green took on the moon hoax recently at 
his web site's blog, waynegreen.com. We have to congratulate Mr. Green on his 
ability to cram so much ignorance and misconception into such a small package. 
A response to his entry for 5/13/04 follows.

I can tolerate stupid people.  I can tolerate aggressive people.  But 
aggressively stupid people are intolerable.  I can't tolerate Wayne Green.

Mike / KK5F
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[Elecraft] K2 and Linearamp UK 811

2007-05-15 Thread Ian J Maude

Hi all,
I am looking to connect my K2 via the above amplifier.  The FR 
connections are obvious, do I simply need to connect the Amp key out on 
the back of the KPA100 to the PTT on the 811 or am I missing something?


Ian

--
Ian J Maude G0VGS
SysOp GB7MBC DX Cluster
Member of RSGB, ARRL, GQRP
K2 #4044

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Re: [Elecraft] STOP with the K3 posts already!!

2007-05-15 Thread Tom Arntzen

You can send your creditcard to me. I'll help you.
My adress is at QRZ.COM.

73 de LA1PHA Tom

LOL!!

- Original Message - 
From: Darwin, Keith [EMAIL PROTECTED]

To: elecraft@mailman.qth.net
Sent: Tuesday, May 15, 2007 2:08 PM
Subject: [Elecraft] STOP with the K3 posts already!!


I don't need a K3
I don't need a K3
I don't need a K3

At first, resistance was easy.  But then I'm seeing all the benefits and
how cost-effective it is.
And how it is so wonderfully designed
And how flexible and robust the filtering scheme is
And the sidetone is going to be pure (pure heaven)
And support / repairs will be a breeze.
And ...

I'm getting weak and you guys are NOT helping!

I need a K3
I need a K3
I need a K3

Someone please take my Visa card away before it's too late!

LOL!

- Keith N1AS -
- K2 5411.ssb.100 -
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Re: [Elecraft] K3 Panadapter / SoftRock

2007-05-15 Thread Leigh L Klotz, Jr.

Or order a new SVR5 on the K3 IF.
Leigh/WA5ZNU
On Tue, 15 May 2007 9:27 am, W2AGN wrote:

Don Rasmussen wrote:

Question:
Is it really as simple as changing the crystal in the
SoftRock 40 from 7.038 to 8.215 to provide a band
scope for the K3?

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RE: [Elecraft] OT: balun rating exceeded

2007-05-15 Thread Ron D'Eau Claire
What usually happens under those conditions may not damage the balun but
does cause lots of RFI: the balun turns non-linear! 

When the magnetic flux saturates the core it heats and its magnetic
properties change dramatically. That produces a non-linear transfer
function. Non-linearity is the hallmark of a good mixer! So your balun
starts making all sorts of unintentional RFI that wasn't at the output of
the transmitter. 

Under such conditions the core is absorbing a lot of power too. Had you
touched it, you'd probably have found it noticeably warm, perhaps even hot,
possibly hot enough to blister your finger. At the extreme, the core will
heat and crack, ruining it and the balun. 

But that doesn't always happen. 

Another temporary failure mode is arcing. That may be more obvious since you
may hear it if the balun is nearby. Most baluns are not made to handle
really large RF voltages. There isn't enough spacing between leads and
terminals for that. The insulation on the wires isn't rated for high
voltages. So, when you have it at a voltage loop and crank up the power,
it's easy for an arc to occur across adjacent leads. If it's through the air
between metallic conductors usually no harm is done. Often it's through the
insulation of adjacent wires or across a PCB. In those cases a carbon trail
is formed that will have to be removed before the balun will work properly
again. 

The bottom line is that modern baluns are NOT designed to be used in systems
with a wide range of impedances. You can get away with using a balun in a
multiband doublet, Windom fed with parallel lines, G5RV, etc., only when
those antennas happen to provide a reasonable impedance at the balun:
neither too low (which would produce high RF currents) or too high (which
would produce high RF voltages). 

Many years ago many of us did use baluns in such systems quite successfully.
They used air core coils. Air does not saturate magnetically. They had large
enough spacing to avoid arcing at high RF voltages. Such baluns commonly
measured a foot square, or larger, by nearly a foot deep. They were
generally mounted on the wall well away from anything that might draw an
unintentional arc from the coils - such as the operator! 

There are times when size does matter! 

Ron AC7AC

 

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Mike Markowski
Sent: Tuesday, May 15, 2007 6:08 AM
To: Elecraft
Subject: [Elecraft] OT: balun rating exceeded


The following happened to me a few years ago as a brand new ham in my
pre-Elecraft days and I wonder if anyone can explain to me the details.  I
apparently had high swr and exceeded the rating on my balun.  It suffered
accordingly but didn't completely fail.  The result was when I transmitted
cw on 40m an internal fuse would blow in the stereo which was on in the next
room room.  It took two go rounds before I caught onto the cause and
effect...  A new  better balun cured the problem.

At the time I had a Zepp (135') and 4:1 balun at the house entrance.  I
assume the ruined balun was emitting all sorts of RF that the stereo
amplifier picked up, tried to amplify, and couldn't.  But I don't understand
exactly what would make it draw that much current.  Can someone enlighten
me?

By the way, since then I put up a dipole, halfwave for 160m, about 200'
behind the house.  That's what I should have begun with.

Thanks!
Mike ab3ap
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Re: [Elecraft] 73 Mag

2007-05-15 Thread w6jd
Back in 1956 when I was a senior in high school I wrote an article for CQ 
describing a plate modulator I homebrewed for my Heath AT-1 (ah, the memories). 
Anyway, Wayne published the article and promised prompt payment (I can't 
remember the amount but it certainly wasn't a lot).
Days passed, and weeks, and months and . despite several letters asking 
where the hell was the money (by this time I was a starving Stanford 
undergrad). No money, and to this day I've never bought another issue of CQ.

Doug, W6JD

-- Original message -- 
From: Jack Smith [EMAIL PROTECTED] 

 You say Wayne Green was a cheapskate. I take your word for that. 
 
 I can provide a bit of personal experience. A few years ago, I wrote 8 
 or 10 construction articles for 73 Magazine, all of which were duly 
 published. Payment for the first article was made in about 6 months. The 
 remaining articles were not paid when 73 Magazine folded (about a year 
 after my last article was published). 
 
 Wayne owes me about $2500. 
 
 Writing for an ARRL publication is quite different in this regard--a 
 check for my two QEX articles arrived *before* the magazines hit my 
 mailbox. That's extraordinary. 
 
 My book publisher runs 3 to 4 months behind in royalty statements as 
 well, so the ARRL is really outstanding in timely payment. 
 
 
 Jack K8ZOA 
 www.cliftonlaboratories.com 
 
 
 
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Re: [Elecraft] 73 Mag

2007-05-15 Thread Jack Smith
A common thread running  through the life of most authors is their 
difficulty getting paid by publishers, being stiffed by unscrupulous 
publishers, etc.


The amount is small, typically on the order of $50 or so per published 
page in the small magazine world, based on my experience, at least, but 
it's still difficult to get paid, or if the publisher is honest, getting 
paid on a timely basis. The ARRL is a welcome exception to this.


I'm glad I don't have to earn a living writing for amateur radio journals.


Jack

[EMAIL PROTECTED] wrote:

Back in 1956 when I was a senior in high school I wrote an article for CQ 
describing a plate modulator I homebrewed for my Heath AT-1 (ah, the memories). 
Anyway, Wayne published the article and promised prompt payment (I can't 
remember the amount but it certainly wasn't a lot).
Days passed, and weeks, and months and . despite several letters asking 
where the hell was the money (by this time I was a starving Stanford 
undergrad). No money, and to this day I've never bought another issue of CQ.

Doug, W6JD

-- Original message -- 
From: Jack Smith [EMAIL PROTECTED] 

  
You say Wayne Green was a cheapskate. I take your word for that. 

I can provide a bit of personal experience. A few years ago, I wrote 8 
or 10 construction articles for 73 Magazine, all of which were duly 
published. Payment for the first article was made in about 6 months. The 
remaining articles were not paid when 73 Magazine folded (about a year 
after my last article was published). 

Wayne owes me about $2500. 

Writing for an ARRL publication is quite different in this regard--a 
check for my two QEX articles arrived *before* the magazines hit my 
mailbox. That's extraordinary. 

My book publisher runs 3 to 4 months behind in royalty statements as 
well, so the ARRL is really outstanding in timely payment. 



Jack K8ZOA 
www.cliftonlaboratories.com 




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Re: [Elecraft] 73 Mag

2007-05-15 Thread Doug Faunt N6TQS +1-510-655-8604
Err, Wayne was not alone in this practice- several publishers of the
time were known for their pay on threat of lawsuit practices.

73, doug

   From: [EMAIL PROTECTED]
   Date: Tue, 15 May 2007 16:49:52 +

   Back in 1956 when I was a senior in high school I wrote an article for CQ 
describing a plate modulator I homebrewed for my Heath AT-1 (ah, the memories). 
Anyway, Wayne published the article and promised prompt payment (I can't 
remember the amount but it certainly wasn't a lot).
   Days passed, and weeks, and months and . despite several letters asking 
where the hell was the money (by this time I was a starving Stanford 
undergrad). No money, and to this day I've never bought another issue of CQ.

   Doug, W6JD

   -- Original message -- 
   From: Jack Smith [EMAIL PROTECTED] 

You say Wayne Green was a cheapskate. I take your word for that. 

I can provide a bit of personal experience. A few years ago, I wrote 8 
or 10 construction articles for 73 Magazine, all of which were duly 
published. Payment for the first article was made in about 6 months. The 
remaining articles were not paid when 73 Magazine folded (about a year 
after my last article was published). 

Wayne owes me about $2500. 

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Re: [Elecraft] 73 Mag

2007-05-15 Thread Doug Person

Doug,
Ah, how well I relate. I wrote 4 articles for 73.  It took a year to get 
payment for the first two and then only because Wayne wanted my next 
two.  These last two I never got a dime for because 73 folded.  I figure 
I made about $5 and hour for my articles.  Hardly worth it.


There was a time when Wayne seem pretty rational.  But, somewhere in the 
90's his editorials became an intellectual disgrace.  Not to mention his 
constant berating of people who are not rich like me and his unending 
self-aggrandizement.


His agreement with René and the absurd assertion in his book that the 
moon-landing was a hoax was, I imagine, the last straw for many.


Still, Wayne did a lot to move VHF FM into the mainstream.  This and 
many other things were important and significant contributions of his.


73, Doug -- K0DXV

[EMAIL PROTECTED] wrote:

Back in 1956 when I was a senior in high school I wrote an article for CQ 
describing a plate modulator I homebrewed for my Heath AT-1 (ah, the memories). 
Anyway, Wayne published the article and promised prompt payment (I can't 
remember the amount but it certainly wasn't a lot).
Days passed, and weeks, and months and . despite several letters asking 
where the hell was the money (by this time I was a starving Stanford 
undergrad). No money, and to this day I've never bought another issue of CQ.

Doug, W6JD

-- Original message -- 
From: Jack Smith [EMAIL PROTECTED] 

  
You say Wayne Green was a cheapskate. I take your word for that. 

I can provide a bit of personal experience. A few years ago, I wrote 8 
or 10 construction articles for 73 Magazine, all of which were duly 
published. Payment for the first article was made in about 6 months. The 
remaining articles were not paid when 73 Magazine folded (about a year 
after my last article was published). 

Wayne owes me about $2500. 

Writing for an ARRL publication is quite different in this regard--a 
check for my two QEX articles arrived *before* the magazines hit my 
mailbox. That's extraordinary. 

My book publisher runs 3 to 4 months behind in royalty statements as 
well, so the ARRL is really outstanding in timely payment. 



Jack K8ZOA 
www.cliftonlaboratories.com 




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Re: [Elecraft] K3 Panadapter / SoftRock

2007-05-15 Thread lyle johnson

Is it really as simple as changing the crystal in the
SoftRock 40 from 7.038 to 8.215 to provide a band
scope for the K3? Seems too easy. I use the Rocky
program to manage the display.


You do NOT want an 8.215 MHz crystal (or 4 x 8.215 MHz) for the softrock if 
you attach it to the IF pickup of the K3 for a bandscope.  The softock has 
very little isolation of the L.O. to its antenna input, and you'll inject a 
lot of energy directly into the IF of the K3.


You want the softrock injection on the LOW side of 8.215 MHz.  I can't tell 
you what the best frequency might be because I don't know, but I suspect 8.200 
or thereabouts.  You may also want/need an isolation amplifier to ensure the 
reverse coupling back into the K3 is at a very low level.


73,

Lyle KK7P
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RE: [Elecraft] 73 Mag

2007-05-15 Thread Dan Barker
Hey guys, this really isn't the place for this thread, but if you must post,
PLEASE say Wayne Green (or whatever his name is). Someone searching for
Wayne on the archives will get a lot of hits. They need to know the
difference between Wayne Burdick (N6KR) and this other fellow.

Dan / WG4S

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Doug Person
Sent: Tuesday, May 15, 2007 1:23 PM
To: [EMAIL PROTECTED]
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] 73 Mag


Doug,
Ah, how well I relate. I wrote 4 articles for 73.  It took a year to get
payment for the first two and then only because Wayne wanted my next
two.  These last two I never got a dime for because 73 folded.  I figure
I made about $5 and hour for my articles.  Hardly worth it.

There was a time when Wayne seem pretty rational.  But, somewhere in the
90's his editorials became an intellectual disgrace.  Not to mention his
constant berating of people who are not rich like me and his unending
self-aggrandizement.

His agreement with René and the absurd assertion in his book that the
moon-landing was a hoax was, I imagine, the last straw for many.

Still, Wayne did a lot to move VHF FM into the mainstream.  This and
many other things were important and significant contributions of his.

73, Doug -- K0DXV

[EMAIL PROTECTED] wrote:
 Back in 1956 when I was a senior in high school I wrote an article for CQ
describing a plate modulator I homebrewed for my Heath AT-1 (ah, the
memories). Anyway, Wayne published the article and promised prompt payment
(I can't remember the amount but it certainly wasn't a lot).
 Days passed, and weeks, and months and . despite several letters
asking where the hell was the money (by this time I was a starving Stanford
undergrad). No money, and to this day I've never bought another issue of CQ.

 Doug, W6JD

 -- Original message --
 From: Jack Smith [EMAIL PROTECTED]


 You say Wayne Green was a cheapskate. I take your word for that.

 I can provide a bit of personal experience. A few years ago, I wrote 8
 or 10 construction articles for 73 Magazine, all of which were duly
 published. Payment for the first article was made in about 6 months. The
 remaining articles were not paid when 73 Magazine folded (about a year
 after my last article was published).

 Wayne owes me about $2500.

 Writing for an ARRL publication is quite different in this regard--a
 check for my two QEX articles arrived *before* the magazines hit my
 mailbox. That's extraordinary.

 My book publisher runs 3 to 4 months behind in royalty statements as
 well, so the ARRL is really outstanding in timely payment.


 Jack K8ZOA
 www.cliftonlaboratories.com



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Re: [Elecraft] 73 Mag

2007-05-15 Thread lyle johnson

Err, Wayne was not alone in this practice- several publishers of the
time were known for their pay on threat of lawsuit practices.


I was paid for my articles by 73 Magazine (and Ham Radio, and QST, and QEX...) 
before they were published.  Never had a moment's quibble.


73,

Lyle kK7P
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Re: [Elecraft] 73 Mag

2007-05-15 Thread Doug Faunt N6TQS +1-510-655-8604
Not necessarily ham radio publishers, and not all publishers.
And generally not every time, either.

73, doug

   From: lyle johnson [EMAIL PROTECTED]
   Date: Tue, 15 May 2007 10:37:17 -0700

Err, Wayne was not alone in this practice- several publishers of the
time were known for their pay on threat of lawsuit practices.

   I was paid for my articles by 73 Magazine (and Ham Radio, and QST, and 
QEX...) 
   before they were published.  Never had a moment's quibble.

   73,

   Lyle kK7P

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Re: [Elecraft] K3 Panadapter / SoftRock

2007-05-15 Thread Bill W5WVO
This brings up a question I asked a while back, and I don't think it made it 
into the FAQ. In a dual-receiver K3, does the IF pickup port reflect the IF of 
only the main receiver? Is it switchable between receivers? Or is there a 
separate IF port on the subreceiver?


Bill / W5WVO

lyle johnson wrote:

You do NOT want an 8.215 MHz crystal (or 4 x 8.215 MHz) for the
softrock if you attach it to the IF pickup of the K3 for a bandscope.
The softock has very little isolation of the L.O. to its antenna
input, and you'll inject a lot of energy directly into the IF of the
K3.



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Re: [Elecraft] 73 Mag

2007-05-15 Thread Jim Brown
On Tue, 15 May 2007 11:22:46 -0600, Doug Person wrote:

I made about $5 and hour for my articles.  Hardly worth it.

Yes. I've done a lot of technical writing that's been published, and
for which I've been paid, and a lot of technical writing for which I
don't expect to make a penny. Although I'm pretty good at it, I don't
think I've ever made more than about $30/hour for writing, and a third
of that is more typical.  Publishers are CHEAP, and are VERY
disrespectful of technical people as writers. 

On the other hand, there is a group of writers who work for
manufacturers writing what are essentially PR pieces. They typically
know nothing technical themselves, but call those who do and ask them
questions, write the piece, and sometimes send it to back us to check
it. I found myself rewriting their stuff in self-defense to correct all
the mistakes. These folks get paid VERY well. I used to cooperate with
them until I figured this out.  Now, I refuse to talk to them unless
I'm also getting paid VERY well. 

There's a broad sample of my writing at
http://audiosystemsgroup.com/publish

Jim Brown K9YC

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RE: [Elecraft] OT: balun rating exceeded

2007-05-15 Thread Jim Brown
On Tue, 15 May 2007 09:35:03 -0700, Ron D'Eau Claire wrote:

The bottom line is that modern baluns are NOT designed to be used in systems
with a wide range of impedances. 

I suggest that those interested in this thread study my tutorial on RFI
and ferrites. It includes a long section on choke baluns.

http://audiosystemsgroup.com/RFI-Ham.pdf

I am currently working on updating the cookbook section with improved
specific recommendations about how coaxial choke baluns must be wound
to minimize stray capacitance. I've done enough work on this to have a
good handle on what works and what doesn't, but had to interrupt it for
a biz trip to Europe. Until I've finished that and posted it, I'll
simply say that the coax should be closely spaced ONLY where it goes
through the toroids, and VERY WIDELY SPACED everywhere else.  The
difference between a coaxial choke with close spaced turns and one with
wide spaced turns is HUGE. 

For example, five CLOSE-spaced turns of RG8 through five #31 toroids
will cause a resonance (and peak performance) in the 2-3 MHz range,
while WIDE-spaced turns will yield excellent performance all the way up
to 10 meters.  

73,

Jim Brown K9YC

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[Elecraft] RTTY vs. PSK31 (was: OT - 73 Magazine (was H mode mixer))

2007-05-15 Thread Brian Lloyd

Whether is PSK or another protocol, is to be
seen. Judging by the numbers of participants in RTTY
contests these days, it is a fast growing segment.
Change is good, unsettling yes, but the possibilities
are worth the uncertainty...


CW remains a mainstay because it is an efficient mode. You can  
communicate with very low power levels which makes QRP reasonable.  
RTTY is not nearly so efficient and requires much more energy per bit  
to get good copy. It forces you into more QRO operation. PSK31 is as  
narrow as CW which lets you use narrow filters to lower the noise  
energy in the passband. It also incorporates forward error correction  
which allows it to still give good copy with very marginal signals.


Now that is not to say that PSK31 is the be-all and end-all for  
casual QSOs but I personally think that it is the first of some very  
interesting modulation schemes that will provide the same level of  
performance as CW. And since new hams don't have to know the code  
anymore ...


73 de Brian, WB6RQN
Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT com


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[Elecraft] Instant Gratification

2007-05-15 Thread Lee Buller

You know, with all the K3 hullabaloo...I find some of the thought processes is 
some emails to be quite disturbing.  The rig has not even been delivered yet 
and people are looking at the resale value after a year.  Or, people are 
comparing the K3 to the Omni VII or FT2000..  Or, trying to figure out how a 
filter they already own will fit in the K3.

This kind of thinking has been going on for quite a while and I am amazed how 
these types of thoughts roll around people's heads...and end up as email topics 
on the E reflector.

The k3 has yet to be deliveredand yet...there are people thinking so far 
ahead of themselves they seem not to appreciate the moment.  Amazing!  How we 
want to know all the answers right now...if this then what happens...or will it 
run on 220? (The last was a joke...don't take is any other way!)

The speculation about the K3 and how it stacks up to the others has been 
endless...and today...we know very little about the K3's numbers, figures, 
data, or specs.

So, with that saidlet us all waitwait...for the guys in Aptos to get 
the crucial information to us before we speculate everything into the ground.  
Yes, it is exciting and some questions are salientbut let's not kill the 
joy of the moment by debating or discussing K3 topics that are ... well ... 
just plain pointless.

We live in a world of instant gratificationlet's just wait.

Lee - K0WA




In our day and age it seems that Common Sense is in short supply.  If you don't 
have any Common Sense - get some Common Sense and use it.  If you can't find 
any Common Sense, ask for help from somebody who has some Common Sense.  Is 
Common Sense devine?
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[Elecraft] H-Mode Mixers

2007-05-15 Thread Fred Jensen
Thanks to all for the URL's and descriptions, most of which were direct 
and not on the reflector ... thanks for that too :-)


I now know way more than I understand about H-mode mixers [and A thru Z 
mode too + names I've never heard of].  I believe I am going to leave 
the mixer business to Wayne and Eric.


73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2007 CQP Oct 6-7
- www.cqp.org

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Re: [Elecraft] K3 Panadapter / SoftRock

2007-05-15 Thread lyle johnson

On Tue, 15 May 2007 12:07:36 -0600
 Bill W5WVO [EMAIL PROTECTED] wrote:
...In a dual-receiver K3, does the IF pickup port reflect the IF 
of only the main receiver? Is it switchable between receivers? Or is there a 
separate IF port on the subreceiver?


Currently, the KXV3 provides one jack for an internal cable to either the main 
or the sub receiver's buffered IF output.  We're looking at the practicality 
of making this selectable.


73,

Lyle KK7P
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Re: [Elecraft] K3 resale value?

2007-05-15 Thread Don Wilhelm

Kieth,

Let me speculate a bit on why the KX1, K1 and K2 hold close to the new 
kit prices - Elecraft has done with those rigs something almost unheard 
of from manufacturers - every one of those rigs is fully upgradeable to 
the equal of the very latest level.  Oh, yes, there are some differences 
between the pre 3000 SN boards and the post 3000 SN boards, but all the 
earlier kits can be upgraded none-the-less.  My Field Test K2 SN 00020 
is stuffed with all the possible options and is currently at the same 
electrical equivalent of SN 6000, and to tell the truth, one would have 
to know where to look to see an obvious difference in the parts placements.


Other manufacturers would likely release a new model of the base rig 
(Omni vs. Omni II for example), and not offer any kind of upgrade path 
(at any cost).  In fact, they often drop support of older models after a 
few years - no parts available.


So since an old K2 is as valuable as a new one (OK, you may have to 
shell out for some upgrade kits if you buy an unupgraded older K2), I 
believe that is the main reason the prices stay high.


I don't think anyone knows how hardware upgrades for the K3 will be 
handled, but I expect to see a parallel path to the K2 history.


73,
Don W3FPR

Darwin, Keith wrote:

One of the beautiful things about the K1 / K2 / KX1 series is that they
assembled kits sell for at or near new kit price.  So a schlep like me
can buy a K2, assemble it, use it a bit and get my money back out of it.
These are the only rigs that allow that sort of return.

Enter the K3.  It's not really a kit, at least not to the same level.
I'm expecting the resale value of a K3 will be similar to the resale
value of any other commercially produced ham rig.  Pay $2000 for a new
rig, sell it 1 year later for $1500.

So, the Elecraft entry path will be to start with a K2 (or K1), see if
you like their stuff, then, sell it (getting your $$ back) and buy a K3.

I also wonder what will happen to the used value of a K2 as we'll see an
increase in available rigs.

- Keith N1AS -
- K2 5411.ssb.100 -

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[Elecraft] Roofing Filter Overkill

2007-05-15 Thread Bill Tippett

N2DTS wrote:

The K3 2.7 KHz filter is just the first filter, unless
you have real strong local signals close, you likely wont have
any problems.

This is very good advice.  Some may forget that
the DSP filters in the 2nd IF are the primary means for
achieving selectivity.  The 1st IF roofing filter is simply
preventing issues caused by very strong signals from reaching
the DSP stage.

Now if you often find yourself working a signal and having
a real strong signal very close, you might think about
something narrower...

I would suggest not adding filters unless you
ACTUALLY experience problems.  Since many of us tend
to be closet engineers, we tend to overkill potential
problems that will most likely never exist.  If you
actually do experience a problem, ordering a filter
is easy and you'll have it in 2-3 days via Priority Mail.

I'll repeat why a 200-250 Hz filter is most likely
a good example of overkill in our real world of transmitter
phase noise, key clicks, etc.  Let's assume you have a
S9+40 dB signal spaced 200 Hz from your operating frequency
that is causing desensing, either BDR or analog AGC
activation (i.e. pumping).


First let's try Inrad's 400 Hz 8-pole filter
below (identical for K3):

http://www.qth.com/inrad/graphs/701.gif

The graph is not quite centered but the 6 dB bandwidth
is 435 Hz (i.e. +/- 218 Hz from center) so the rejection
at 200 Hz from the center is just under 6 dB.  We now
have a S9+34 dB signal at 200 Hz away from us.  Possibly
some help if it prevents the signal from activating
analog AGC (assuming the DSP ADC limit is around S9+35).


Next let's try a 250 Hz 4-pole filter like
Inrad's for Orion II (we don't yet have a plot of
K3's 200 Hz 5-pole but I expect it may not differ
significantly in shape factor from Inrad's below).

http://www.qth.com/inrad/graphs/353.gif

Because the 6 dB bandwidth is actually 562 Hz, it will
actually have *less* rejection at 200 Hz than the 8-pole
400 Hz above.


OK let's try another.  Inrad's 250 Hz 8-pole
(again identical to that in the K3).

http://www.qth.com/inrad/graphs/708.gif

The 6 dB bandwidth is actually 370 Hz, so it has the
best rejection at 200 Hz spacings (but only marginally
better than the 8-pole 400 Hz above which has a 6 dB
bandwidth only 65 Hz wider (435-370).


In the real world, will ANY of these filters
really allow us to operate 200 Hz from an S9+40 dB
signal?  The simple answer is NO.  Why?  Because the
transmitted phase noise (for only a steady state
carrier) far overrides desense issues.  Furthermore,
when the carrier is keyed, we must then add the
effects of key clicks.  We actually are pressing
our luck if we try to operate 500 Hz from such a
strong signal, and I doubt very few on this list
have ever done that unless they are very serious
contesters.

Bottom line...we can add the world's best filter
but it will NOT solve the fundamental problem of
transmitter phase noise and key clicks, which become
the limiting factors at very close spacings.  Today
Orion has the best close-in phase noise performance
and CW waveform shaping of any commercial rig, but its
sidebands are down only about 70 dB at 1 kHz spacings.
Move closer and it is more like 30 dB down at 200
Hz spacings.  What good does it do if we could achieve
IMD of 100 dB and BDR of 140 dB at 200 Hz spacings when
the interfering transmitter signal itself overrides
the receiver's performance by at least 60-70 dB?
That's pure overkill and a waste of money IMHO.

200-250 Hz roofing filters might make us feel
good but, in the real world of transmitted phase noise
and key clicks, they will not allow us to operate
significantly closer than we could with 400-500 Hz
filters.  And, as we saw above with the 4-pole 250
Hz, we may want to see all filter plots before we
decide which is actually better.

I ordered my K3 without any optional filters,
and I may even swap out the 2.7 kHz 5-pole once I see
complete IMD/BDR performance data and the actual
filter plots.

73,  Bill  W4ZV






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[Elecraft] W1 Wattmeter/SWR Bridge + KX1

2007-05-15 Thread Fred Jensen
I finished the W1 computing wattmeter, and put it in W8FGU's nifty 
polycarbonate enclosure.  It was an easy build, some tidbits and links 
can be found at www.foothill.net/~andreaj/Ham45.htm


While fooling with the KX1 and BuddiPole on the deck on a balmy evening, 
I discovered that if I remove the tilt stand on Dave's enclosure [easy, 
it's fastened with velcro], a double male BNC will couple the wattmeter 
to the KX1 and the combination lays flat on the table.  I can tune the 
BP with the W1, making it unnecessary to carry the antenna analyzer 
along on field expeditions.  All in all, a nifty little arrangement.


73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2007 CQP Oct 6-7
- www.cqp.org

PS:  Enough BNC adapters and I could probably do something similar with 
my K2 :-)

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Re: [Elecraft] W1 Wattmeter/SWR Bridge + KX1

2007-05-15 Thread Dan KB6NU
Cool. I'm getting close to finishing my W1 and putting it in a W8FGU  
enclosure. How do the KX1 power readings compare to the W1 readings?


73!

Dan KB6NU
--
CW Geek and MI Affiliated Club Coordinator
Read my ham radio blog at www.kb6nu.com
LET'S GET MORE KIDS INTO HAM RADIO!



On May 15, 2007, at 3:08 PM, Fred Jensen wrote:

I finished the W1 computing wattmeter, and put it in W8FGU's nifty  
polycarbonate enclosure.  It was an easy build, some tidbits and  
links can be found at www.foothill.net/~andreaj/Ham45.htm


While fooling with the KX1 and BuddiPole on the deck on a balmy  
evening, I discovered that if I remove the tilt stand on Dave's  
enclosure [easy, it's fastened with velcro], a double male BNC will  
couple the wattmeter to the KX1 and the combination lays flat on  
the table.  I can tune the BP with the W1, making it unnecessary to  
carry the antenna analyzer along on field expeditions.  All in all,  
a nifty little arrangement.


73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2007 CQP Oct 6-7
- www.cqp.org

PS:  Enough BNC adapters and I could probably do something similar  
with my K2 :-)

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RE: [Elecraft] Instant Gratification

2007-05-15 Thread Darwin, Keith
Well, Lee, I see a different side to it.

I think we're all quite aware that the K3 isn't here yet and is an
unproven item.  Still we have indication of how it will likely end up.

All the chat / speculation / conjecture has spurred a lot of solid
technical discussion which has been great on the list.  We've learned
about receiver design and about good and bad points of other rigs.  Good
stuff.

And some of us fully consider all the aspects of something before
buying.  When buying a new car, we'll look at safety, dimensions, cargo
capacity, towing capacity, EPA estimates and yes, even resale value, to
gain a better overall picture of what we're spending our money on.
We'll even consider those things for a model that hasn't quite made it
to dealer's showrooms yet.  Failure to do means you'll be set up for a
surprise when you buy the item and find it won't tow your trailer or you
can't fit your guitar into the trunk or you can't get in and out of the
back seat.  The more you learn, the better informed you are and the more
likely you are to have a realistic expectation of what the item will and
won't do.

As to these discussions being pointless, there are a lot of different
people chiming in on a lot of different topics.  There is excitement in
the air and many people are tuned in.  I'd say the discussions are far
from pointless.  Some of us (not me) were planning to buy a rig but now
are going to wait to see what the K3 offers.  Were it not for the
discussions, they may have gone ahead and ordered.

I do agree that we have to be careful when we say what will and
won't be but again, I don't think any of are really thinking there are
any guarantees at this point.

So I say let the discussions / radio theory / speculation continue.  It
is great fun and really stretches a person's brain, maybe even to the
breaking point?

- Keith N1AS -
- K2 5411.ssb.100 -

-Original Message-
From: Lee Buller
Sent: Tuesday, May 15, 2007 2:15 PM
To: Elecraft Reflector
Subject: [Elecraft] Instant Gratification


You know, with all the K3 hullabaloo...I find some of the thought
processes is some emails to be quite disturbing.  The rig has not even
been delivered yet and people are looking at the resale value after a
year.  Or, people are comparing the K3 to the Omni VII or FT2000..  Or,
trying to figure out how a filter they already own will fit in the K3.

This kind of thinking has been going on for quite a while and I am
amazed how these types of thoughts roll around people's heads...and end
up as email topics on the E reflector.

The k3 has yet to be deliveredand yet...there are people thinking so
far ahead of themselves they seem not to appreciate the moment.
Amazing!  How we want to know all the answers right now...if this then
what happens...or will it run on 220? (The last was a joke...don't take
is any other way!)

The speculation about the K3 and how it stacks up to the others has been
endless...and today...we know very little about the K3's numbers,
figures, data, or specs.

So, with that saidlet us all waitwait...for the guys in Aptos to
get the crucial information to us before we speculate everything into
the ground.  Yes, it is exciting and some questions are salientbut
let's not kill the joy of the moment by debating or discussing K3 topics
that are ... well ... just plain pointless.

We live in a world of instant gratificationlet's just wait.

Lee - K0WA




In our day and age it seems that Common Sense is in short supply.  If
you don't have any Common Sense - get some Common Sense and use it.  If
you can't find any Common Sense, ask for help from somebody who has some
Common Sense.  Is Common Sense devine?
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[Elecraft] K3 Panadapter / SoftRock

2007-05-15 Thread Benny Aumala

I think this will be really interesting.
Some surplus xtals seem to be available as close as 32,768MHz (8,192).
If you have 2 separate RX, why not have 2 SoftRock (cheap) or
two input to 1 SoftRock ?

Benny OH9NB

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FW: [Elecraft] Instant Gratification

2007-05-15 Thread Edward Dickinson III
When buying a new car, we'll look at safety, dimensions, cargo capacity,
towing capacity, EPA estimates and yes, even resale value, to gain a better
overall picture of what we're spending our money on.

Yes, and I'd like that with a bench-type seat (no console) to easily
accommodate a K3.


Regards,
Dick - KA5KKT/4

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[Elecraft] Digital SSB..?

2007-05-15 Thread Edward Dickinson III
I do not recall having yet seen any mention of digital SSB or other
digitized voice possibilities for the K3.

I'll confess to being ignorant of this topic.

Perhaps someone can address the possibility or non-possibility of this.


Regards,
Dick - KA5KKT/4

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[Elecraft] FS new K2 firmware kit

2007-05-15 Thread Robert Johansen
Surplus to my needs:

I have a new FWK2MCUIO firmware kit with versions 2.04P (Main), 1.09
(IOC) for sale 

Contact [EMAIL PROTECTED] 

Bob Johansen WB2SRF 
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RE: [Elecraft] Instant Gratification

2007-05-15 Thread Lee Buller
Keith,

I agree that some of the discussion has been good ... in fact great!  Remember, 
I I wrote


Yes, it is exciting and some questions are salientbut
let's not kill the joy of the moment by debating or discussing K3 
topics that are ... well ... just plain pointless.

Again, I said salient  But come onthere has to be
some point that is good for the discussion, not some pointless
blather and speculation.

Lee - K0WA
Gee - I wonder how the K3 will perform against a SB-101?
or
Does the K3 have a filling hole for more QSOs?





 

In our day and age it seems that Common Sense is in short supply.  If you don't 
have any Common Sense - get some Common Sense and use it.  If you can't find 
any Common Sense, ask for help from somebody who has some Common Sense.  Is 
Common Sense devine?
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Re: [Elecraft] RTTY vs. PSK31 (was: OT - 73 Magazine (was H mode mixer))

2007-05-15 Thread Old Man
In my humble opinion, I would say PSK, generally, has it all over RTTY. 
Communication can be maintained with very marginal signals, and very nearby 
signals (unless they are dirty or overpowering the receiver's AGC system). 
I have used a lot of RTTY systems over the years and they require MORE 
bandwidth, more power for effective communication (generally), and subject 
nearby signals more interference (generally).


The largest bug I have found in the PSK system is that it is mangled by 
propagation phase shifts caused by auroral disturbances even though audibly, 
the signal sounds OK.
I consider this acceptable as it (PSK31) seems to get through much more 
efficiently than RTTY with less power.  Speed in this case not a factor in 
keyboard to keyboard QSO's.


I can see no sense in using MORE bandwidth than a PSK31 signal to convey 
normal QSO information.  Other modes capable of data and image communication 
in addition to normal keyboard QSO's wind up being gross overkill and use 
spectrum space a lot more inefficiently.  Spectrum space for CW, digital 
modes is shrinking from demands made for voice and wide data modes. 
Therefore it would behoove us to contrate our efforts on the narrowest 
digital mode that will give satisfactory communication in these days of 
decreasing spectrum space.  An amazing amount of use is being made of just a 
3-5 Khz. sub band for PSK operations on most bands from 80-10 meters.  It 
amazes me why this mode isn't replacing RTTY, and remains a popular FSK 
mode.  It would be like comparing effectiveness of SSB voice mode to the 
older AM voice mode.  I can't see people changing over to AM, even as a 
fad, over SSB operations.  It's starkly obvious which is generally 
superior!


My two pennies worth on this thread.

73,

Sandy W5TVW


- Original Message - 
From: Brian Lloyd [EMAIL PROTECTED]

To: J F [EMAIL PROTECTED]
Cc: Elecraft Discussion List elecraft@mailman.qth.net
Sent: Tuesday, May 15, 2007 1:09 PM
Subject: [Elecraft] RTTY vs. PSK31 (was: OT - 73 Magazine (was H mode 
mixer))




Whether is PSK or another protocol, is to be
seen. Judging by the numbers of participants in RTTY
contests these days, it is a fast growing segment.
Change is good, unsettling yes, but the possibilities
are worth the uncertainty...


CW remains a mainstay because it is an efficient mode. You can 
communicate with very low power levels which makes QRP reasonable.  RTTY 
is not nearly so efficient and requires much more energy per bit  to get 
good copy. It forces you into more QRO operation. PSK31 is as  narrow as 
CW which lets you use narrow filters to lower the noise  energy in the 
passband. It also incorporates forward error correction  which allows it 
to still give good copy with very marginal signals.


Now that is not to say that PSK31 is the be-all and end-all for  casual 
QSOs but I personally think that it is the first of some very  interesting 
modulation schemes that will provide the same level of  performance as CW. 
And since new hams don't have to know the code  anymore ...


73 de Brian, WB6RQN
Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT com


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RE: [Elecraft] K3 resale value?

2007-05-15 Thread peter gerba
Hi Don;

I sent my Omni VI in for a + up-grade.  They couldn't make the changes as
there are more up-grade parts (filter boards) in stock.

Pete kn6bi

 -Original Message-
From:   [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]  On Behalf Of Don Wilhelm
Sent:   Tuesday, May 15, 2007 1:40 PM
To: Darwin, Keith
Cc: Elecraft
Subject:Re: [Elecraft] K3 resale value?

Kieth,

Let me speculate a bit on why the KX1, K1 and K2 hold close to the new
kit prices - Elecraft has done with those rigs something almost unheard
of from manufacturers - every one of those rigs is fully upgradeable to
the equal of the very latest level.  Oh, yes, there are some differences
between the pre 3000 SN boards and the post 3000 SN boards, but all the
earlier kits can be upgraded none-the-less.  My Field Test K2 SN 00020
is stuffed with all the possible options and is currently at the same
electrical equivalent of SN 6000, and to tell the truth, one would have
to know where to look to see an obvious difference in the parts placements.

Other manufacturers would likely release a new model of the base rig
(Omni vs. Omni II for example), and not offer any kind of upgrade path
(at any cost).  In fact, they often drop support of older models after a
few years - no parts available.

So since an old K2 is as valuable as a new one (OK, you may have to
shell out for some upgrade kits if you buy an unupgraded older K2), I
believe that is the main reason the prices stay high.

I don't think anyone knows how hardware upgrades for the K3 will be
handled, but I expect to see a parallel path to the K2 history.

73,
Don W3FPR

Darwin, Keith wrote:
 One of the beautiful things about the K1 / K2 / KX1 series is that they
 assembled kits sell for at or near new kit price.  So a schlep like me
 can buy a K2, assemble it, use it a bit and get my money back out of it.
 These are the only rigs that allow that sort of return.

 Enter the K3.  It's not really a kit, at least not to the same level.
 I'm expecting the resale value of a K3 will be similar to the resale
 value of any other commercially produced ham rig.  Pay $2000 for a new
 rig, sell it 1 year later for $1500.

 So, the Elecraft entry path will be to start with a K2 (or K1), see if
 you like their stuff, then, sell it (getting your $$ back) and buy a K3.

 I also wonder what will happen to the used value of a K2 as we'll see an
 increase in available rigs.

 - Keith N1AS -
 - K2 5411.ssb.100 -
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[Elecraft] RTTY vs PSK31

2007-05-15 Thread Fred Jensen

Brian Lloyd wrote:

 CW remains a mainstay because it is an efficient mode. You can 
communicate with very low power levels which makes QRP reasonable.


Don't know about others, but I get much more enjoyment from listening 
to the guy I'm in QSO with rather than looking at the screen as he 
types. I left nearly all my hearing on the other side of the planet 40+ 
years ago, so CW is my preferred HF mode.  SSB works for me for 
multi-station Q's [which we used to call round-tables ... let's see, 
who do I turn it to next?], so long as the signals are strong and in 
the clear.  Other than contests, I find the digital modes to be somewhat 
boring.  YMMV


73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2007 CQP Oct 6-7
- www.cqp.org

If you're in your 20's and want to make God laugh, tell him the plans 
you have for your life.

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Re: [Elecraft] 1st production run full - details?

2007-05-15 Thread Eric Swartz - WA6HHQ, Elecraft

It is proprietary, but its a lot ;-) .

We increased our initial production run and following ones to 
accommodate the order rate.


73,
Eric   WA6HHQ

DOUGLAS ZWIEBEL wrote:

Wayne, Eric, et al:

Okay, it is now posted on the order form that:
* Our July/August production run is now full. New K3 orders received
after 1800Z 5/14/07 will ship from our second production run. (Sept.)

Come on guys (gals)...how many radios?  Why would that be proprietary?

de Doug KR2Q


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[Elecraft] On my way to Dayton

2007-05-15 Thread Don Wilhelm

Hi Folks,

Just wanted to let you know that I am closing things down right now to 
prepare for my drive to Dayton and FDIM early tomorrow morning.


For those who are going, I will see some of you there.  I plan to do a 
toroid winding/stripping demo at the Elecraft booth at 10AM and again at 
2PM each day (time and space at the booth permitting).


Drop by and say 'hello', and catch a look at the new K3 while you are there.

I will have the laptop available, so email is a good means of 
communication between now and Sunday night.  Pardon if I don't get back 
to you promptly,  there are lots of fun things to do during Dayton Time.


73,
Don W3FPR
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Re: [Elecraft] 1st production run full - details?

2007-05-15 Thread Toby Deinhardt

 It is proprietary, but its a lot ;-)

Oh boy, it's yastsa time...

My wild stab would 500 for the first run and 500 for the second run

My sincere congratulations to the guys in Aptos - This shows how good a 
job they done over the last several years.


vy 73 de toby

PS: yastsa = yet another subject to speculate about

--
DD5FZ, 4N6FZ (ex dj7mgq, dg5mgq, dd5fz)
K2 #885, K2/100 #3248
K3/100 #??? ( #200)
DOK C12, BCC, DL-QRP-AG
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Re: [Elecraft] K3 stock TCXO vs. KTCXO3

2007-05-15 Thread Eric Swartz - WA6HHQ, Elecraft

5 ppm.
Eric  WA6HHQ


Don Rasmussen wrote:

Hi Guys,

The optional TCXO3-1 is rated at a meager 1 ppm
(software corrected to a beautiful .5 ppm.) ;-)

What's the stock K3 TCXO rated, please? 



  

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Re: [Elecraft] STOP with the K3 posts already!!

2007-05-15 Thread Larry Makoski

Darwin, Keith wrote:

I don't need a K3
I don't need a K3
I don't need a K3
 
  
This one is a no-brainer for me.  I can't afford one - it's that 
simple.  If I make any attempts to procure one, my wife would have a fit 
(sorry, W2AGN!) 


In the long run, I'll be happy with my K2 ... for now.

73 de Larry W2LJ

--
73 de Larry W2LJ
QRP - When you care to use the very least!

http://www.w2lj.qrpradio.com
http://w2lj.blogspot.com/

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RE: [Elecraft] Instant Gratification

2007-05-15 Thread Ron D'Eau Claire
Excitement produces stream-of-consciousness chatter, just like a good
brainstorming session. At such times there are no good or bad thoughts
or ideas, just ideas that trigger other thoughts and comments. 

It's fun to see such excitement here!

Let the good times roll...

Ron AC7AC

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Re: [Elecraft] STOP with the K3 posts already!!

2007-05-15 Thread Michael B

I was thinking the same thing.


--
W2CVZ,
Michael
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[Elecraft] K2's internal voltmeter adjustment?

2007-05-15 Thread Sam Morgan

I'm still getting to know my new/used K2 #2481
the voltage reading when I hit display twice says 12.1 volts.
when I check my external battery voltage
(with a Sencore digital meter) I get 12.76 volts

Where in the manual is there a pointer to an adjustment for the internal 
voltmeter, or is there one?

--
GB  73's
KA5OAI
Sam Morgan
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RE: [Elecraft] RTTY vs. PSK31 (was: OT - 73 Magazine (was H modemixer))

2007-05-15 Thread Ron D'Eau Claire
Good points Sandy, but you know there are a lot of guys with old Type 47 and
33 mechanical printers out there who enjoy firing them up and hearing them
rattle the windows of the shack pounding out TTY on paper by the hour. As
far as I know, not a one of them will do PSK or any other TOR mode.

While many Hams keep their eyes squarely on the future, many look back to
the past. Shoot, there are even many Hams who build and operate vacuum tube
gear and some who have yet to utter a single word on 'phone using anything
but AM phone! G 

I agree that we should conserve spectrum as a matter of good stewardship of
the resource but out here in the west, at least, we have lots and lots of
KHz on the HF bands that are unoccupied except, perhaps, during a contest.
If the day ever comes that we do find ourselves unable to squeeze in
sideways on a band, perhaps we'll need to re-think the use of some wider
bandwidth modes, just like King Spark was outlawed for just that reason
about 75 years ago. 

Ron AC7AC



-Original Message-
In my humble opinion, I would say PSK, generally, has it all over RTTY. 
Communication can be maintained with very marginal signals, and very nearby 
signals (unless they are dirty or overpowering the receiver's AGC system).

I have used a lot of RTTY systems over the years and they require MORE 
bandwidth, more power for effective communication (generally), and subject 
nearby signals more interference (generally).

The largest bug I have found in the PSK system is that it is mangled by 
propagation phase shifts caused by auroral disturbances even though audibly,

the signal sounds OK.
I consider this acceptable as it (PSK31) seems to get through much more 
efficiently than RTTY with less power.  Speed in this case not a factor in 
keyboard to keyboard QSO's.

I can see no sense in using MORE bandwidth than a PSK31 signal to convey 
normal QSO information.  Other modes capable of data and image communication

in addition to normal keyboard QSO's wind up being gross overkill and use 
spectrum space a lot more inefficiently.  Spectrum space for CW, digital 
modes is shrinking from demands made for voice and wide data modes. 
Therefore it would behoove us to contrate our efforts on the narrowest 
digital mode that will give satisfactory communication in these days of 
decreasing spectrum space.  An amazing amount of use is being made of just a

3-5 Khz. sub band for PSK operations on most bands from 80-10 meters.  It 
amazes me why this mode isn't replacing RTTY, and remains a popular FSK 
mode.  It would be like comparing effectiveness of SSB voice mode to the 
older AM voice mode.  I can't see people changing over to AM, even as a 
fad, over SSB operations.  It's starkly obvious which is generally 
superior!

My two pennies worth on this thread.

73,

Sandy W5TVW


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Re: [Elecraft] Instant Gratification

2007-05-15 Thread Sam Morgan

Thom LaCosta wrote:

I think the Elecraft folks not only deserve congratulation and thanks, 
but a commendation for operating their business at such high standards.



I totally agree with all you have said,
now if they would just start a separate list for all things K3,
this feeding frenzy is never going to end,
well at least not for the next 2 years.
--
GB  73's
KA5OAI
Sam Morgan
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Re: [Elecraft] 1st production run full - details?

2007-05-15 Thread Bill NY9H



Come on guys (gals)...how many radios?  Why would that be proprietary?



Really  Does Macys tell Gimbels ?


cu tomorrow !!!   [EMAIL PROTECTED]@%$#   I get to see my new K3


bill 


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[Elecraft] Panadapter for K3 IF

2007-05-15 Thread James Duffey

  Lyle and all - You wrote:

You want the softrock injection on the LOW side of 8.215 MHz.  I  
can't tell
you what the best frequency might be because I don't know, but I  
suspect 8.200

or thereabouts. 

If you place the local oscillator on the low side of the IF by an  
amount slighter greater than the IF bandwidth you don't need an I/Q  
or software receiver at all do you? The signals you want will be in  
the IF pass band above the local oscillator and the images will be  
below the oscillator, you will get single signal reception from a DC  
receiver. You will need a wide audio filter, but you may be able to  
implement a simple one in the computer. Dave Benson's Warbler on 80 M  
uses this technique. Then just use one of many spectrum analyzer  
programs for your shack computer to display the signals in the  
bandwidth. These are usually good to at least 20 kHz or half the  
sampling rate. Or am I missing something simple? - Duffey

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Re: [Elecraft] K2's internal voltmeter adjustment?

2007-05-15 Thread Sam Morgan

Sam Morgan wrote:

I'm still getting to know my new/used K2 #2481
the voltage reading when I hit display twice says 12.1 volts.
when I check my external battery voltage
(with a Sencore digital meter) I get 12.76 volts

Where in the manual is there a pointer to an adjustment for the internal 
voltmeter, or is there one?



thanks to all who replied off list

mystery solved
protection diode = voltage drop = the missing .66v
--
GB  73's
KA5OAI
Sam Morgan
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Re: [Elecraft] 73 Mag

2007-05-15 Thread Brian Lloyd

On May 15, 2007, at 9:49 AM, [EMAIL PROTECTED] wrote:

Back in 1956 when I was a senior in high school I wrote an article  
for CQ describing a plate modulator I homebrewed for my Heath AT-1  
(ah, the memories). Anyway, Wayne published the article and  
promised prompt payment (I can't remember the amount but it  
certainly wasn't a lot).
Days passed, and weeks, and months and . despite several  
letters asking where the hell was the money (by this time I was a  
starving Stanford undergrad). No money, and to this day I've never  
bought another issue of CQ.


FWIW, 73 paid me on-time every time for my Packet Talk column.

73 de Brian, WB6RQN
Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT com


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[Elecraft] Keyboard question

2007-05-15 Thread Ken Kopp

Can someone aim me at a small keyboard?  I realize that small
is relative, so let's say something that's appropiate for my K3.  
Something on the order of a small laptop keyboard in a housing.


I've walked the isles of a few computer departments scanning the 
shelves, asked sales folks and haven't found anything.


73! Ken Kopp - K0PP
[EMAIL PROTECTED]

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[Elecraft] Re: Panadapter for K3 IF

2007-05-15 Thread Jean-Claude Abauzit
The IF bandwidth is as wide as the input bandpass filter. A DC 
receiver won't work, you really need an I/Q receiver like the SoftRock.


Jean-Claude PJ2BVU


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No virus found in this outgoing message.
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Re: [Elecraft] Keyboard question

2007-05-15 Thread Ward Willats

At 3:24 AM + 5/16/07, Ken Kopp wrote:

Can someone aim me at a small keyboard?  I realize that small
is relative, so let's say something that's appropiate for my K3. 
Something on the order of a small laptop keyboard in a housing.


I like the Happy Hacker keyboards but it may be a bit pricey for this.

cybergys.com sells a generic black mini ps/2 keyboard for $25 or 
so. Also good.


-- Ward / KG6HAF
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Re: [Elecraft] Keyboard question

2007-05-15 Thread Larry

Maybe something like this:

http://www.newegg.com/Product/Product.aspx?Item=N82E16823166018


73
Larry
WA2DGD



Ken Kopp wrote:

Can someone aim me at a small keyboard?  I realize that small
is relative, so let's say something that's appropiate for my K3.  
Something on the order of a small laptop keyboard in a housing.


I've walked the isles of a few computer departments scanning the 
shelves, asked sales folks and haven't found anything.


73! Ken Kopp - K0PP
[EMAIL PROTECTED]

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Re: [Elecraft] Keyboard question

2007-05-15 Thread Brian Lloyd


On May 15, 2007, at 8:24 PM, Ken Kopp wrote:


Can someone aim me at a small keyboard?  I realize that small
is relative, so let's say something that's appropiate for my K3.   
Something on the order of a small laptop keyboard in a housing.


Do a search on Google for compact computer keyboard.


73 de Brian, WB6RQN
Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT com


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[Elecraft] (no subject)

2007-05-15 Thread AJSOENKE
Sorry fellas: The YF (XYL with call) KF6DZP has the K3 announcement from  the 
DX convention magged to the refrigerator. Worst scenario, I might have to  
buy 2 !

Suggestion for the Tee shirt:  Headset taking a rap on  the forehead with the 
text I could have had a K3!
(apologies to Campbell  Foods Div.)

Al WA6VNN




** See what's free at http://www.aol.com.
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[Elecraft] Let The Good Times Roll

2007-05-15 Thread David Yarnes

It's fun to see such excitement here!

Let the good times roll...

Ron AC7AC
-I'm going to screw this up I know, but when I lived in 
Louisiana, that was the motto!It went Laissez les bon temps rolliere, or 
something like that.  Help me out you cajuns!I never learned french (or 
their version) while down there, but I sure enjoyed the parties!Dave W7AQK 



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[Elecraft] FW: Some k3 questions

2007-05-15 Thread Simon Lewis
Speaking of transverters

I missed some questions aroun them

Was there any answers in the storm of email!



Simon Lewis 
GM4PLM/DL4PLM
http://www.dl4plm.net



Speking of transverters

Will the K3 display be changeable like the K2 so you get 144.xxx 50.xxx
222. etc

If you can allow us to add the display to 1296. for future upconverting
I will buy loads of K3s!  :-)

What about the CW keyer ... And the DVR - any idea on fuctionality

Can they be controlled ala' icom style by a small keypad remotely??

And any beacon modes..?

All helpful to us SHF ops

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