Re: [Elecraft] Choke & RFC K2 PCB Markings?

2006-04-18 Thread Nick Waterman
Fred (FL) wrote:
> I'm a bit confused as to the "markings" for 2-terminal
> CHOKES, RFC's, and L's - used on the RF BOARD of the 
> K2.
[...]
> What is the WIDER band supposed to represent?  Is it
> the TOLERANCE or the first color band?

All of these (Choke, RFC, L) are basically just coils. There is no
positive or negative, there is no polarisation, they can be installed
either way 'round and it shouldn't make any difference which way 'round
you install them.

I installed all of mine in the same orientation as resistors (which are
again unpolarised) - so the bands can be read left-to-right, or
top-to-bottom.

Yes, the extra band (usually gold) is a tolerance, again exactly like
the resistors.

-- 
"Nosey" Nick Waterman, G7RZQ, K2 #5209.
use Std::Disclaimer;[EMAIL PROTECTED]
Computer Science: solving today's problems tomorrow.
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[Elecraft] Re: Transverter inquiry

2006-04-18 Thread Dennis Ponsness
I am in the same situation and I just want to make sure that I fully 
understanding what the solution is:


I have a K2 with the K60XV option installed and will use a XV50 for 6m 
operation.  I need to have no more than 10w being produced by the XV50 so I 
don't fry my 6m brick.  I would construct the XV50 and configure it to be 
driven by a K2 with the K60XV module as per the instructions (1mW drive).  
Assuming that the XV50 is set to be TRN1, I would set the OUT parameter for 
TRN1 to .50 (.5 mW) - which would therefore make the max output of the XV50 
10w.  This would be independent on any setting of the Power control on the 
K2.  I this the correct procedure for limiting to output of the XV50 to 10w 
based on my equipment configuration?



73

Dennis - WB0WAO

EN84ij Iosco County, Michigan
K2 #3555

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Re: [Elecraft] K2 and Kenwood TL-120 linear

2006-04-18 Thread Bob Towers
Trev,

Well, I got the linear working OK, at least on digital modes which are 99% of 
my QSOs.

I'm switching it on and off via the COM1 port and an opto-isolator. The 
opto-isolator switches the base to collector connection (12K resistor in 
series) of the switching transistor in the main relay circuit of the TL-120. I 
could have just grounded the bottom end of the main relay (~40mA current, well 
within the 4N25 opto-isolator limits), but I reckoned the final solution was 
the more elegant.

K2 minimum drive (~0.1W indicated) gives me 30W from the TL-120 at the ATU. 
It'll run 50 watts RTTY without the fan coming on.

Thanks again and 73

Bob
2M0KDZ

PS Now for SSB
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[Elecraft]

2006-04-18 Thread afu-dg3oo
hi,

i have the following problem with my elecraft K2 s/n 3922:

when i listening to a station in a quietly position of the AF GAIN (position 9 
o clock pm), then the audio was a little bit distortet. when the AF GAIN are in 
a louder position, may be 10 o clock position, the distortion on the audio was 
disappeared. what can be the cause of this distortion? 

Get anyone an idea?

73 de dg3oo
manfred

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[Elecraft] Elecraft] DSL filters as RFI filters

2006-04-18 Thread jmeade
There may be several types of DSL filters out there. Each may have a
different frequency response characteristic.

The original ADSL (Asymmetric Digital Subscriber Network) had a frequency
range starting at about 25kHz and ending at about 1.1MHz.  The range from
25kHz to 138kHz is the "upstream" and from 138kHz to 1.1MHz is "downstream".
The wider bandwidth for the downstream is designed for faster downloading,
since most people download more than they upload.

Now there are DSL types that extend to 2.2MHz (ADSL2+), 4.4MHz (ADSL2++),
12MHz (VDSL) and as high as 30MHz (VDSL2). There are also variations that
may end at some other frequencies between 1.1MHz and 30MHz depending on the
local service.

The phone frequencies (called "POTS" - Plain Old Telephone Service) range
from DC to about 3400Hz. The DC signals include the "ringing" voltage.

Signals in the ranges above (voice from DC to 3.4kHz and DSL from 25kHz to
up to 30MHz) may be present on the twisted-pair telephone cables from the
Central Office to the home (called the "local loop").

73,

John W2XS
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Re: [Elecraft] Choke & RFC K2 PCB Markings?

2006-04-18 Thread Stuart Rohre
Typically, the extra bands can be a tolerance band of silver or gold.  10 
per cent for silver and 5 per cent for gold.   On resistors that have a 
fourth color band, that sometimes is a voltage rating, if not a silver or 
gold band.

Stuart
K5KVH 



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RE: [Elecraft]

2006-04-18 Thread Don Wilhelm
Manfred,

Does this occur with both the headphones and the speaker?  If it is only
with the speaker, you may have a speaker with a distorted frame.

73,
Don W3FPR

> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED]
> Sent: Tuesday, April 18, 2006 6:23 AM
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] 
>
>
> hi,
>
> i have the following problem with my elecraft K2 s/n 3922:
>
> when i listening to a station in a quietly position of the AF
> GAIN (position 9 o clock pm), then the audio was a little bit
> distortet. when the AF GAIN are in a louder position, may be 10 o
> clock position, the distortion on the audio was disappeared. what
> can be the cause of this distortion?
>
> Get anyone an idea?
>
> 73 de dg3oo
> manfred
>
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[Elecraft] Touch Paddle Progress

2006-04-18 Thread Steven Pituch
 Hi all,
I have made progress with making a touch paddle for my K2.  I have some
documentation at:
http://users.ev1.net/~spituch/Steve's%20Page/Radio/SW40+/SW40+.html

Regards,
Steve, W2MY/5

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Re: [Elecraft] Is a K2 Realignment Advisable

2006-04-18 Thread Bill Coleman


On Feb 13, 2006, at 10:33 AM, Jim Harris wrote:


My K2/100 (S/N 4787) is about 10 months old.  My
question is at what point, or ever, should all the
initial alignments be repeated?  There are several
reasons for asking the question other than electronic
components simply drifting a bit with age.


Old tube-type rigs required this every year or so, because the heat  
aged the components. Modern components and equipment are much better  
and don't get nearly so hot.



1.  Recently I've noticed when it is initially turned
on the received frequency is about 100 hz high judged
by the pitch of people's voices that I know.  After
20-30 minutes they drift to near exact frequency.


I had this sort of problem before I installed the PLL and BFO  
stability mods. Your K2 may be recent enough to have come with these  
modifications.



2.  When initially turned on and transmitting right
away I've had reports of distortion like I'm crowding
the mike.


Ditto the above.


3.  When doing the initial alignment I had a terrible
time with zero beating due to bad hearing.  A frequncy
counter finally helped solve that to some degree.


The K2 is never going to be a precise frequency meter. Due to the  
nature of the tuning mechanism, it could have an error as large as 30  
Hz.  I wouldn't sweat a re-calibration unless you find it to be a kHz  
or two off.



4.  I did not use spectrogram as it seemed confusing
and my radio seemed to play well enough without it.
It is still equal to or better than my IC746Pro.


Programs like spectrogram can really help to adjust the filters  
accurately.



I just hate to fix it if it's not broke.  But, I'm
wondering if I could squeeze a little more performance
out of it.  I hate to have my K2 on the bench for 2-3
days and not be able to use it.  Well, what does
everyone say.  Go for it or not?

Thanks for the help and bandwidth.


Wait until you want to make a mod or some other change. Enjoy it in  
the meantime.



Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: "Not within a thousand years will man ever fly!"
-- Wilbur Wright, 1901

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Re: [Elecraft] Choke & RFC K2 PCB Markings?

2006-04-18 Thread Mark Bayern
I have never heard of a resistor with a 4th color band for voltage.

Using 4 color bands for the resistance value is quite common -- see
just about any small 1% resistor.  Three bands for the significant
digits and one for the power of 10.

Mark   AD5SS

On 4/18/06, Stuart Rohre <[EMAIL PROTECTED]> wrote:
> Typically, the extra bands can be a tolerance band of silver or gold.  10
> per cent for silver and 5 per cent for gold.   On resistors that have a
> fourth color band, that sometimes is a voltage rating, if not a silver or
> gold band.
>
> Stuart
> K5KVH
>
>
>
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[Elecraft] T1 review in AR magazine

2006-04-18 Thread chris meagher
An article written by myself on constructing the T1 tuner, has been 
published in the April issue of Amateur Radio Magazine (Australia).


Best regards,

Chris Meagher
VK2LCD
PO Box 61
Woodburn NSW  2472
Australia

Nearest town: Evans Head
HF Rig: Elecraft K2
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[Elecraft] Receiver actually works!

2006-04-18 Thread John Wiener
Just finished Alignment Part II.  Found a few more wiring errors in  
the process and fixed them.  Really is sweet to actually listen to  
40M.  The sound is exceptionally clean.  I've been listening to an  
old Heathkit regenerative receiver to practice code for license  
exam.  Quite a change in quality now with the K2.  I am using a  
multiband dipole, twin lead to balun and RG8U to K2.  At first I  
thought it was too quiet.  Then I turned on the PreAmp...still very  
clean yet seems very sensitive.


I almost want to take a break for a while before continuing the kit  
so I can listen some more (!)


I'm sure I'm not done with mistakes yet, but I want everyone to know  
that If I can do this kit, you can.


You've heard of Worked All States, I feel eligible for Replaced All  
Parts.


Broke a two pin connector, lost a few diodes...early in the kit, I  
soldered every electrolytic cap on the control board backwards,,,the  
big stripe MUST be plus, right?  Yes, I AM an idiot.  I'm  learning,  
though.  Getting better at desoldering (although I wish I didn't need  
to).


On the Alignment Part II, I just found that I soldered TWO IF  
transformers incorrectly... used the wrong ones!  Of course, I had to  
break the IF's to remove them...board is OK, though.  I did this  
after rechecking the directions TWICE... strange how you can convince  
yourself you're correct and miss something like this.


I feel very proud to have come this far.  Now I can't wait to get on  
the air.  It's only been 30 years.


I think Elecraft has an excellent product  but the best part is the  
intangible sense of accomplishment that kit building brings.

Thanks Elecraft for keeping me on the right track.

John
AB8WH
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Re: [Elecraft] Is CW a Language? OT

2006-04-18 Thread Bill Coleman


On Feb 8, 2006, at 9:07 AM, Mike Morrow wrote:


IMHO, this practice [dropping DE and K prosigns in contests]
reflects badly on the contester (on his Morse
"professionalism," if you will).  Unfortunately, it also becomes  
for many a
bad habit carried over into routine operation.  We're only talking  
about
taking a *small* additional fraction of a second to send a complete  
and

proper exchange.


My point is that the extra prosigns aren't necessary in this case.  
The contesters are already sending exchanges that conform to known  
patterns -- the overhead isn't needed.



  In reality, most contest time and energy is utilized
sending unanswered calls over and over and over and over.


But during the time that there are responders to those CQs, working  
the callers quickly and efficiently can make a huge difference in  
score. If several callers are there at the same time, they may not  
stick around if the operator isn't super-efficient.



It is unfortunate that contest and DX rules in general don't mandate
complete call sign exchanges by both stations, each containing both  
station

call signs along with the proper prosigns.


There are some contests which dictate the sending of both callsigns  
-- the NA Sprint is one.



  That would certainly be more
appropriate than the totally perfunctory 599 report usually sent  
with each

exchange.


Not all contests use a 599 report. Many have much more interesting  
exchanges. NAQP, for example, uses the Name and State, Province or  
Country.


Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: "Not within a thousand years will man ever fly!"
-- Wilbur Wright, 1901

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Re: [Elecraft] Is CW a Language? OT

2006-04-18 Thread Bill Coleman


On Feb 8, 2006, at 10:49 AM, Sandy W5TVW wrote:


| However, these days, operating zero-beat on a single frequency, the
| long call is just a waste of time. You call CQ DE W5TVW K. I'll
| answer AA4LR on the same frequency. Where's the confusion?

Perhaps no confusion to you, the sending operator, but a  
possible bit

of confusion to the operator who called CQ!


I and many others have THOUSANDS of successful CW QSOs using these  
techniques.


 Firstly, let's assume you have imperfect propagation conditions:  
fading, static,
whatever.  You might miss my call or get it confused if I sent it  
just once.


On 160m and sometimes 80m, perhaps I'll double the call to AA4LR AA4LR.

If you only get part of it, you'll send the part you got: 4LR. I'll  
respond with my full call again: AA4LR AA4LR. The more times we  
repeat this, the more times I'll repeat my call.



Anything else might likely lead to asking
you to repeat your callsign, which takes up even more time?


The point is, especially in a contest, the vast majority of the time,  
the first call works. And this protocol works well when there are  
multiple callers, too.


Just a one time sent callsign IS bad operating practice and  
operating manners.


Some of the very best operators I know are contesters, and they ALL  
do this. It can't possibly be a "bad practice".


Contest conditions are usually frantic, crowded and many times  
plain RUDE.


Well, that's true.


Such things as sections/states and unique member
numbers are exchanged.  In the peak of the QRM/QSB I usually always
send State and my number TWICE.


This is kinda a "QRP" mentality -- "I'm weak and in the noise, I  
better be redundant." That's not always so. Low power and QRP  
stations can have formidable and readable signals, given reasonable  
antennas and fair to good conditions.


In some cases, such redundancy may be helpful, like on 160m. But,  
mostly, it just wastes time.



Otherwise, you
have to ask for a repeat which wastes more time.


Fills can be done quickly and efficiently, too.


| The old "Novice Accent" advice was to do 3x3x3 - CQ CQ CQ DE W1ABC
| W1ABC W1ABC repeated three times. Again, that was with a lot of guys
| still rock-bound. These days, a single 3x3 with a few seconds of
| listening seems more appropriate.
|
I agree LOONG CQ calls or doing a 3 X 3 format three times
IS...repeat IS a waste of time and "overkill".  Do the 3 X 3 and wait
15-60 seconds and repeat the call.


We do agree on this!


  We still have a few people who
have "vintage" transmitters that are crystal controlled, but sadly
very few people who "tune around", even a couple of kHz. with
the RIT control.


Or open up the filter bandwidth, at least.


Anyway, the sum of it is, nobody seems like they are teaching ANY
really good operating practices anymore.


And we agree here, too.


Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: "Not within a thousand years will man ever fly!"
-- Wilbur Wright, 1901

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Re: [Elecraft] Is CW a Language? OT

2006-04-18 Thread Sandy W5TVW
AMEN!  I can't agree more with Mike!  Why get sloppy and why some guys trying
to run their keyers at 40 WPM?  Why send your callsign just once 
on the initial call?  Twice should be a matter of minimums,
 how does the sender know his signal is BOOMING in or in the clear?  
You just have to ask him to repeat, which RUINS the "speed" 
advantage, or wastes the time he's trying to save!  
E-S-P-E-C-I-A-L-L-Y during a QRP contest!  Won't people
EVER learn?

Just how much time does sending a "DE" or a "K" take?
73,
Sandy W5TVW


- Original Message - 
From: "Bill Coleman" <[EMAIL PROTECTED]>
To: "Mike Morrow" <[EMAIL PROTECTED]>
Cc: 
Sent: Tuesday, April 18, 2006 8:34 PM
Subject: Re: [Elecraft] Is CW a Language? OT


| 
| On Feb 8, 2006, at 9:07 AM, Mike Morrow wrote:
| 
| > IMHO, this practice [dropping DE and K prosigns in contests]
| > reflects badly on the contester (on his Morse
| > "professionalism," if you will).  Unfortunately, it also becomes  
| > for many a
| > bad habit carried over into routine operation.  We're only talking  
| > about
| > taking a *small* additional fraction of a second to send a complete  
| > and
| > proper exchange.
| 
| My point is that the extra prosigns aren't necessary in this case.  
| The contesters are already sending exchanges that conform to known  
| patterns -- the overhead isn't needed.
| 
| >   In reality, most contest time and energy is utilized
| > sending unanswered calls over and over and over and over.
| 
| But during the time that there are responders to those CQs, working  
| the callers quickly and efficiently can make a huge difference in  
| score. If several callers are there at the same time, they may not  
| stick around if the operator isn't super-efficient.
| 
| > It is unfortunate that contest and DX rules in general don't mandate
| > complete call sign exchanges by both stations, each containing both  
| > station
| > call signs along with the proper prosigns.
| 
| There are some contests which dictate the sending of both callsigns  
| -- the NA Sprint is one.
| 
| >   That would certainly be more
| > appropriate than the totally perfunctory 599 report usually sent  
| > with each
| > exchange.
| 
| Not all contests use a 599 report. Many have much more interesting  
| exchanges. NAQP, for example, uses the Name and State, Province or  
| Country.
| 
| Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
| Quote: "Not within a thousand years will man ever fly!"
|  -- Wilbur Wright, 1901
| 
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| 
| 
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| Checked by AVG Free Edition.
| Version: 7.1.385 / Virus Database: 268.4.1/309 - Release Date: 4/11/2006
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| 
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[Elecraft] Non-K2 mics Preamp Schematic

2006-04-18 Thread Jim Harris
Okay, everyone I totally goofed on this one.  It is on
the Elecraft Website.  The URL is
http://www.elecraft.com/Apps/microphone_pre.htm  
Sorry abuut the wrong location.  The old gray matter
isn't what it used to be.

Have a great day.

Jim, AB0UK
K2/100 S/N 4787

On Mar 22, 2006, at 12:29 PM, Jim Harris wrote:

> I use a preamp with my non K2 mics when using them
> with the K2.  I got the preamp schematic from Don
> Wilhelms website. (He offers tremendous
> troubleshooting advice here on this forum.)  The
site
> URL is http://w3fpr.qrpradio.com/

>I couldn't find a schematic for a pre-amp on this web
>site. (I found  
>a bunch of other stuff, though) Could you cite the
>actual circuit you  
>used?


Bill Coleman, AA4LR, PP-ASELMail:
[EMAIL PROTECTED]
Quote: "Not within a thousand years will man ever
fly!"
 -- Wilbur Wright, 1901

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Re: [Elecraft] K2 - data mode r bar

2006-04-18 Thread Bill Coleman


On Mar 23, 2006, at 9:35 AM, Bob Towers wrote:

How come data mode r bar is LSB when USB is the default for all  
bands and data modes? Shouldn't data mode r be USB, not LSB?


Classic RTTY AFSK uses LSB, not USB. You'd have to reverse the tones  
to use USB.


You can set up R and R-bar to be whichever sideband you want -- but I  
suggest LSB and USB, respectively.


I use R for RTTY and R-bar for PSK31.


Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: "Not within a thousand years will man ever fly!"
-- Wilbur Wright, 1901

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Re: [Elecraft] Is CW a Language? OT

2006-04-18 Thread Sandy W5TVW
We've been thru this before gentlemen.

In a VERY busy contest, there ain't no such thing as "a single frequency"
There is signals every 20-50 Hz!  The BIG 160 meter contests are 
examples of this.  If you are a "DXer", how many times have you succeeded
with only a 'single' call in a big pileup?  You may have to send your call
a bunch of times,and/or be running a bunch of power.  If someone calls me
just a single time and I send "QRZ", I expect the other chap to have
enough sense to send his call at least 2-3 times.  Usually because static is the
culprit or two or more callers QRMing each other.  Either way you gotta 
repeat the call. 
In a contest, the highly abbreviated procedures are commonplace,
but I still say it is lazyness or stupidity to apply the same logic to
an answer to an everyday CQ call.  Whoever isn't familiar with
the "protocol", it would behoove him to certainly learn it.
What's the problem with that?  It's just simple manners, like for example;  
Like learning not to pass gas loudly in church or on a crowded bus.
(to cite a rather crude, but typical situation)  If ARRL no longer
teaches good operating skills, find out from an old timer, what they
are.
Sorry for the tirade, but I feel very strongly about this and think it a
VERY large mistake that ARRL saw fit to take this section out of the
"Handbook".  Maybe its because there are more "LIDS" than "A1"
operators in Newington now?
73,
Sandy W5TVW
- Original Message - 
From: "Bill Coleman" <[EMAIL PROTECTED]>
To: "Sandy W5TVW" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>; 
Sent: Tuesday, April 18, 2006 8:56 PM
Subject: Re: [Elecraft] Is CW a Language? OT


| 
| On Feb 8, 2006, at 10:49 AM, Sandy W5TVW wrote:
| 
| > | However, these days, operating zero-beat on a single frequency, the
| > | long call is just a waste of time. You call CQ DE W5TVW K. I'll
| > | answer AA4LR on the same frequency. Where's the confusion?
| >
| > Perhaps no confusion to you, the sending operator, but a  
| > possible bit
| > of confusion to the operator who called CQ!
| 
| I and many others have THOUSANDS of successful CW QSOs using these  
| techniques.
| 
| >  Firstly, let's assume you have imperfect propagation conditions:  
| > fading, static,
| > whatever.  You might miss my call or get it confused if I sent it  
| > just once.
| 
| On 160m and sometimes 80m, perhaps I'll double the call to AA4LR AA4LR.
| 
| If you only get part of it, you'll send the part you got: 4LR. I'll  
| respond with my full call again: AA4LR AA4LR. The more times we  
| repeat this, the more times I'll repeat my call.
| 
| > Anything else might likely lead to asking
| > you to repeat your callsign, which takes up even more time?
| 
| The point is, especially in a contest, the vast majority of the time,  
| the first call works. And this protocol works well when there are  
| multiple callers, too.
| 
| > Just a one time sent callsign IS bad operating practice and  
| > operating manners.
| 
| Some of the very best operators I know are contesters, and they ALL  
| do this. It can't possibly be a "bad practice".
| 
| > Contest conditions are usually frantic, crowded and many times  
| > plain RUDE.
| 
| Well, that's true.
| 
| > Such things as sections/states and unique member
| > numbers are exchanged.  In the peak of the QRM/QSB I usually always
| > send State and my number TWICE.
| 
| This is kinda a "QRP" mentality -- "I'm weak and in the noise, I  
| better be redundant." That's not always so. Low power and QRP  
| stations can have formidable and readable signals, given reasonable  
| antennas and fair to good conditions.
| 
| In some cases, such redundancy may be helpful, like on 160m. But,  
| mostly, it just wastes time.
| 
| > Otherwise, you
| > have to ask for a repeat which wastes more time.
| 
| Fills can be done quickly and efficiently, too.
| 
| > | The old "Novice Accent" advice was to do 3x3x3 - CQ CQ CQ DE W1ABC
| > | W1ABC W1ABC repeated three times. Again, that was with a lot of guys
| > | still rock-bound. These days, a single 3x3 with a few seconds of
| > | listening seems more appropriate.
| > |
| > I agree LOONG CQ calls or doing a 3 X 3 format three times
| > IS...repeat IS a waste of time and "overkill".  Do the 3 X 3 and wait
| > 15-60 seconds and repeat the call.
| 
| We do agree on this!
| 
| >   We still have a few people who
| > have "vintage" transmitters that are crystal controlled, but sadly
| > very few people who "tune around", even a couple of kHz. with
| > the RIT control.
| 
| Or open up the filter bandwidth, at least.
| 
| > Anyway, the sum of it is, nobody seems like they are teaching ANY
| > really good operating practices anymore.
| 
| And we agree here, too.
| 
| 
| Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
| Quote: "Not within a thousand years will man ever fly!"
|  -- Wilbur Wright, 1901
| 
| 
| 
| -- 
| No virus found in this incoming message.
| Checked by AVG 

RE: [Elecraft] Is a K2 Realignment Advisable

2006-04-18 Thread Ron D'Eau Claire
Jim Harris wrote:

> 1.  Recently I've noticed when it is initially turned
> on the received frequency is about 100 hz high judged
> by the pitch of people's voices that I know.  After
> 20-30 minutes they drift to near exact frequency.

And Bill, AA4LR replied:

I had this sort of problem before I installed the PLL and BFO  
stability mods. Your K2 may be recent enough to have come with these  
modifications.



Bill offers excellent comments and replies. I happened to turn my K2 on
early today to check WWV at 10 MHz. Within a minute of turning it on, I was
listening to WWV and the dial read 40 Hz high: 1.04. (See below* for my
method of finding Zero Beat in SSB mode if you're curious)

A half hour later zero beat was exactly at 1.00 kHz 

I just checked it now, about 11 hours later and it's still at 1.00 kHz

I've found that typical since adding the BFO and PLL Reference Oscillator
(L.O.) stability mods. It isn't always 10,000.00 kHz, but within 10 or 20 Hz
of the right frequency. 

If you're seeing a 100 Hz shift, I suspect you're missing one or the other
of the two oscillator mods - perhaps both. The rigs varied a lot before the
changes were made. 

Ron AC7AC

*SSB "Zero Beat": Tune in WWV in  either upper or lower sideband mode so it
sounds "close" then press/hold CW RV to change instantly to the other
sideband. (That button works in SSB as well as CW). If you aren't exactly on
frequency, you'll hear the pitch of the tone jump up or down. Tune in 10 Hz
steps until you hear the direction of the jump change. For example, when I
switch from L to H, I may hear the tone go up in pitch. So I increment the
frequency 10 Hz higher, then switch from L to H again. If the pitch goes
even higher, I went the wrong way, so I tune 20 Hz lower. Change from L to H
again and see if the tone goes up or down. Now it should definitely go down.
Tune down another 10 Hz and switch from L to H again. Keep this up until
suddenly the tone jumps up instead of down in pitch. That means that I just
passed the optimum tuning point. Either zero beat was the last 10 Hz point
or it's between 10 Hz points. 

Note that every time I switch sidebands the SAME direction: L or low to H or
high. You can go either way, just make sure you switch back before checking
at the next frequency! 

You don't have to match tones. You only need to be able to tell that the
tone shifted direction and whether it went up or down. 



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Re: [Elecraft] K2 and MacOS

2006-04-18 Thread Bill Coleman


On Apr 12, 2006, at 6:05 AM, Robert Allbright wrote:

Out of curiosity I am wondering how many of you are users of MacOS?  
(I'm using OSX 10.4.6) on my G5 iMAC


MacOS X rocks! I use my macs whenever I can. (I have an old Sawtooth  
and carry my 12" PB G4 1 GHz into the shack to use Cocoamodem)


I bought my wife an iBook two years ago, and she's become completely  
inseparable from it. It changed her life.



Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: "Not within a thousand years will man ever fly!"
-- Wilbur Wright, 1901

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[Elecraft] Re: K2 and MacOS

2006-04-18 Thread wayne burdick

Yup. Me too: G5.

I only use the PC when I have to write firmware or run hardware 
modeling software.


Wayne
N6KR


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[Elecraft] Re: T1 review in AR magazine

2006-04-18 Thread wayne burdick

Hi Chris,

Appreciate your efforts. Please post a link to the article if it's 
available on-line.


73,
Wayne
N6KR

chris meagher wrote:

An article written by myself on constructing the T1 tuner, has been 
published in the April issue of Amateur Radio Magazine (Australia).



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