Re: [Elecraft] going back in time with the K1

[Mike Markowski]

I still enjoy my K1, too.  A favorite qso was going to a nearby park in 
Delaware, stuck a wire in the back, tuned and qso'd with an op in France.


I always liked the K1 ad quoting a compliment by a Heathkit chief 
engineer, Mike Elliot w8kkr, preserved here:


   https://www.qrpproject.de/UK/elecraft_k1.htm

73,
Mike ab3ap

On 8/21/22 11:09 PM, brianpepperdine brianpepperdine wrote:
> Well.. anyhow last week I had extra time on my hands so pulled out some 
of the neglected rigs. [...]

Found the K1 was a good rig.. made decent contacts. [...]

Brian VE3HI

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Re: [Elecraft] Stacking KPA on KAT

[Mike Markowski]

Here is a solution I still use: https://udel.edu/~mm/ham/elecraft/rack

The diner look!

73,
Mike ab3ap

On 7/23/22 12:27 PM, Mark Musick wrote:

When I had the KPA500/KAT500 I also had the KPA on top of the KAT. No
problem. It is also my understanding that like Ian it was designed to
be set up with the KPA on top of the KAT.

73, Mark, WB9CIF

-Original Message-
From: elecraft-boun...@mailman.qth.net
 On Behalf Of Ian Kahn Sent:
Saturday, July 23, 2022 16:09 To: James Bennett  Cc:
Elecraft Reflector Reflector ; Paul Ecker
 Subject: Re: [Elecraft] Stacking KPA on KAT

Ditto James' answer. Not only is there no problem doing this, if I
recall correctly, they were designed for this use case.

73 de,

Ian, NV4C

On Sat, Jul 23, 2022, 11:36 AM James Bennett via Elecraft <
elecraft@mailman.qth.net> wrote:


Paul,

That's exactly the way I've had my pair set up for years - works
great.

Jim / K7TXA


On Jul 23, 2022, at 9:33 AM, Paul Ecker 
wrote:

I am re-arranging the shack desk. Is anyone stacking the KPA500
on top of the KAT 500? Any weight or heat issues ? Or is it ok to
do?

73 Paul w2eck

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Re: [Elecraft] I/Q details for the KX3.

[Mike Markowski]

Jerome,

This answer is for generic SDRs, since I don't have a KX3.

An SDR always must use both I and Q, even for CW.  I and Q are two 
streams of samples of the same signal.  One of many advantages to i/q 
sampling is the ADC's can run slower (cheaper).  In the extreme and 
ignoring the intrusion of real life components on sampling, a 10 kHz 
wide signal could be sampled with I and Q ADCs running at 10 kHz. 
Nyquist is satisfied because you have 2 streams, or 20 kHz sampling in 
this example.  Aliasing prevents you from using just I in that case.


The fact that Q is 90 deg from I, means we can plot them on axes 90 deg 
apart.  That allows re-appropriating the entire field of complex 
mathematics to work with the samples.  I and Q are both physical - 
trying to avoid the word 'real'! - streams of samples, but I can be 
called real and Q can be called imaginary.  Using Euler's Formula, they 
can be bundled into a concise exp(j phi) formulation to work with.


I/Q imbalance is always a concern.  Maybe others can quantify it better 
than me saying smaller is better.  :-)


73 es GL!
Mike ab3ap

On 6/21/22 11:08 PM, JEROME SODUS wrote:

Hello,

Although I have asked some of these questions on another forum, here I have 
expanded on them a bit.

When the KX3 transmits a CW-signal, are both I and Q used?
If so, why would that be necessary?
(My guess is only the I is needed.)

Same questions too for a SSB-signal.

But, for any digital transmission like RTTY, FT8, or Olivia, wouldn't both I 
and Q would be active?

The LO is used for the "In Phase" and is delayed by 90 degrees for the 
"Quadrature"; how is that delay done?
How much can the delay deviate from 90 degrees and still be useful?

My reason for asking is that I'm to give a talk to the Radio Club in August 
about how a KX3 works and want to mention these details.

TIA for any replies.
73 jerry km3kKX3#6088
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Re: [Elecraft] RPN Calc App For Android

[Mike Markowski]

Strange...  Maybe because I used HTML?  Here it is again, hopefully 
makes it this time.


Maybe https://thomasokken.com/free42/ - unbeatable, in my very biased 
opinion. An FPGA version is even available.  Not the nearly the same 
tactile feedback as my real (aging) hp42 but very nice all the same.  I 
often use the hp42s emulator on my phone at work.

73,

Mike ab3ap


On 1/28/22 4:57 PM, Jim Brown wrote:

Blank email.

Thanks, Jim K9YC

On 1/28/2022 1:24 PM, Mike Markowski wrote:


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Re: [Elecraft] RPN Calc App For Android

[Mike Markowski]

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Re: [Elecraft] On ground - in ground radials

[Mike Markowski]

A construction site had left over galvanized mesh rolls that I bought at
great discount.  I unrolled them symmetrically about my then soon-to-be
installed vertical.  Easier than individual for lazy hams like me :-) and
2nd qso at 100W from Pennsylvania was Cambodia!  That qso made my day and
then some.

73,
Mike ab3ap

On Sun, Jan 16, 2022 at 11:22 AM Tom & Barb Valosin 
wrote:

> ...Digging in radials does not interest me.
>
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Re: [Elecraft] K Line: Signal loss in a QSO

[Mike Markowski]

I will dangerously rely on memory.  I recall a discussion, no doubt one 
of many similar, simply describing the amp as most efficient at full 
power, not that any output power level should be avoided.  After all, 
every amp is designed around some quiescent current.


73,

Mike ab3ap

On 1/16/22 9:06 AM, Wes wrote:
It is not in the manual, but has appeared here many times, without 
logical explanation.


Wes  N7WS

On 1/16/2022 6:52 AM, j...@kk9a.com wrote:

I have not heard this either. Is this in the manual? 5 watts would be a
tough output to avoid if you enjoy QRP.

John KK9A

KE8G wrote:

Hmm, I've never heard that 5 or 50 watts of power shouldn't be run.

73 de KE8G - Jim 

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Re: [Elecraft] K1 Noise Blanker KNB1 already-built and working

[Mike Markowski]

Remember one of the early Elecraft web page descriptions?  Former 
Heathkit engineer (chief engr?, I forget) wrote a letter praising kit 
and radio.  An unbeatable ad!


73,

Mike ab3ap

On 11/30/21 8:50 PM, Eric Norris wrote:

...
The K1 is a great little rig.  I built the 2- band version, and then the
4-band filter board, with all options.  It still works like a champ.

73 Eric WD6DBM

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Re: [Elecraft] Sold - FS: W2 dir. coupler, HF 200W

[Mike Markowski]

Thanks, all.  The coupler has a new home!

73,
Mike ab3ap

On 11/15/21 11:20 AM, Mike Markowski wrote:
I have for sale a lightly used directional coupler and sensor cable for 
use with a W2 power meter:


   Freq:  1.8 to 54 MHz
   Pwr:   200 W max
   Price: $100 + shipping of your choice.  (Currently, $200 new.)

For clarity, this is coupler only, not a W2.  :-)

Tnx es 73!
Mike ab3ap

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[Elecraft] FS: W2 dir. coupler, HF 200W

[Mike Markowski]

I have for sale a lightly used directional coupler and sensor cable for 
use with a W2 power meter:


  Freq:  1.8 to 54 MHz
  Pwr:   200 W max
  Price: $100 + shipping of your choice.  (Currently, $200 new.)

For clarity, this is coupler only, not a W2.  :-)

Tnx es 73!
Mike ab3ap
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[Elecraft] (no subject)

[Mike Markowski]

set delivery off
end
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[Elecraft] OT: 15 year anniversary

[Mike Markowski]

After building a K1 and K2, extra parts were kept in the wonderful 
Elecraft white boxes that meant radio building time!  At looong last 
when organizing those extras tonight, I found my K2/10 cover (later 
replaced by the K2/100 cover).  On the inside with a Sharpie is written 
'Built by Mike Markowski AB3AP  Apr 7, 2005'.  Fifteen years!  Wow. 
Time really does fly when you're having fun.


Looking forward to the next 15,
Mike ab3ap

PS I also found endless "Packed by Christine" slips.  :-)
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Re: [Elecraft] NorCal40 -> K1 rx xtal filter evolution

[Mike Markowski]

Thanks, Wayne.  If not too much trouble that would be great.  Or even a 
run down of how you got the values.  Maybe I'm just looking in the wrong 
place.  And I guess the ripple doesn't matter too much for a cw-only qrp 
rig?


It would be very interesting to read a technical "why we changed this" 
from rig to rig over time.  But I guess that leads to problems with 
tipping off the competition and being a bit of a time sink, too!


73,
Mike ab3ap

On 4/17/20 4:15 PM, Wayne Burdick wrote:

Hi Mike,

I can probably scrounge up the original Lm and other specs for you.

Varactor capacitance vs. voltage for the parts I used in the design is readily 
available on the web. Just search for the part datasheet.

Varactor tuning of the filter is great for varying the bandwidth, but it is a 
compromise in terms of loss and ripple.

73,
Wayne
N6KR



On Apr 17, 2020, at 12:55 PM, Mike Markowski  wrote:

For fun, I thought I'd make an archeological dig and take a look at how things 
changed from NorCal 40a to K1 since they're easy to study.  Then I realized 
part of it is not so easy for me.  The 40a uses a Cohn filter and I thought I'd 
run through analysis (not simulation) of it.  Again, just for the exercise of 
it while cooped up during these viral stay-at-home days.

However, the data sheets I downloaded for the HC-49 crystal don't seem to have 
the motional capacitance and inductance.  So, two questions arise: (1) I 
thought these were provided by crystal makers, the experts. Are they expected 
to be measured or is there some simplification in network analysis that doesn't 
require them?, and (2) are there Cohn filter tables like there are for 
Butterworth and Chebyshev?  I can't find anything on analysis after a fair bit 
of googling.

Moving on to the K1, receive filter bandwidth is controlled by changing 
capacitance via varactor diode voltage.  But that comes from the DAC and 
requires probing to determine voltage that in turn sets capacitance for the 
filter.  I can't find much on varactor controlled Cohn filters.  So (3), is 
there a place to read up more on it?

Tnx es 73!
Mike ab3ap, suffering cabin fever
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[Elecraft] NorCal40 -> K1 rx xtal filter evolution

[Mike Markowski]

For fun, I thought I'd make an archeological dig and take a look at how 
things changed from NorCal 40a to K1 since they're easy to study.  Then 
I realized part of it is not so easy for me.  The 40a uses a Cohn filter 
and I thought I'd run through analysis (not simulation) of it.  Again, 
just for the exercise of it while cooped up during these viral 
stay-at-home days.


However, the data sheets I downloaded for the HC-49 crystal don't seem 
to have the motional capacitance and inductance.  So, two questions 
arise: (1) I thought these were provided by crystal makers, the experts. 
Are they expected to be measured or is there some simplification in 
network analysis that doesn't require them?, and (2) are there Cohn 
filter tables like there are for Butterworth and Chebyshev?  I can't 
find anything on analysis after a fair bit of googling.


Moving on to the K1, receive filter bandwidth is controlled by changing 
capacitance via varactor diode voltage.  But that comes from the DAC and 
requires probing to determine voltage that in turn sets capacitance for 
the filter.  I can't find much on varactor controlled Cohn filters.  So 
(3), is there a place to read up more on it?


Tnx es 73!
Mike ab3ap, suffering cabin fever
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Re: [Elecraft] PX3 acrylic scratch removal

[Mike Markowski]

I've used Polywatch for similar things in the past, but not on a PX3. 
So check product details first, and maybe others here know of better.


Should your sign off be:  adTHANKSvance  ?  :-D

73,
Mike ab3ap

On 4/14/20 1:14 PM, Chris Cox, N0UK wrote:

Can anyone recommend a safe polish or other to aid in buffing out a minor 
surface scratch on the plastic (Perspex/acrylic?) screen cover on a PX3?

inTHANKSadvance

Chris, N0UK, G4JEC

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Re: [Elecraft] CW skimmer vs. i/q

[Mike Markowski]

A great analogy is from Keysight.  In the lab I work in, scopes and 
RTSAs stream i/q.  Keysight software named Vector Signal Analysis takes 
the i/q and can sometimes provide more capability in signal analysis 
than the stand alone gear itself.  Tektronix does similar.  Raw, binary 
i/q is all you need, and I think the Beatles said more or less the same 
thing didn't they??  :-)  (Assuming love == i/q.)


Happy 2020,
Mike ab3ap

On 12/31/19 2:47 PM, M. George wrote:

...With an API to the K4 and the I/Q output over
the LAN, applications that are much better at what they do...

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Re: [Elecraft] Monmouth pics - Rhombic antenna "gain"

[Mike Markowski]

Dave,

I took some photos as the shut down was under way in 2011. I wish I had
taken some sooner, even a week earlier. They're at:

http://udel.edu/~mm/ham/monmouth

73,
Mike ab3ap

On Sat, Sep 14, 2019, 11:14 AM David Olean  wrote:

> I was a lowly 2nd Lieutenant at Ft Monmouth in 1968. I was going thru a
> tropo scatter class. I used to love to drop in to K2USA in that wooden
> barracks building.  I don't remember much except that it was waay cool
> to me.  I wonder if there are any pictures of the place online?
>
> Dave K1WHS
>
> On 9/13/2019 11:17 PM, EricJ wrote:
> > Maybe the termination was changed in later years. I was permanently
> > assigned to K2USA from '63-'65 (not bad duty for a ham). We ran
> > thousands of phone patches to/from SE Asia on that rhombic and the 20m
> > monobander @ 90 feet. I used to break into QSOs between two local VKs
> > chatting via ground wave with that antenna. I was the only signal they
> > could hear.
> >
> > You probably knew Mike Reason. When I was there, he was a local kid
> > who used to hang out at the MARS station. Great guy, now SK.
> >
> > Eric KE6US
> >
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Re: [Elecraft] Rhombic antenna "gain"

[Mike Markowski]

Can you expand on this, Ken, or if easier, a reference?  I'm curious 
what tradeoffs are made.  I used a rhombic at Ft. Monmouth, NJ before 
the Army base was closed in 2011, and used to boom into Europe and 
Russia.  It was amazing.  I also got copies of WWII manuals on rhombic 
construction while there.  You know, just in case I became wealthy with 
tens of acres of land.  :-)


73,
Mike ab3ap

On 9/13/19 5:57 PM, Ken G Kopp wrote:

Rhombic antennas derive their well-known gain by "throwing away" some of
the design's gain.  Ditto for the infamous "inverted vee". Use is made of
the lobes from the four wires while disregarding others.

73 !

Ken Kopp - K0PP

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Re: [Elecraft] Has anyone tried UBUNTU (Linux

[Mike Markowski]

Steve and all,

I used cqrlog for a couple years and it's impressive.  For sake of 
simplicity, however, I went back to the trio of xlog & xdx with hamlib 
support.  I made a minor modification xdx so that when I select a new 
(for me) dx, I can then paste the call into xlog.


As to Elecraft software, no, it is not compatible with modern versions 
of linux without some effort.  For some odd reason, Elecraft only makes 
32-bit binaries available.  You can load those libraries onto Ubuntu, 
but it's a lot of bloat. I chose to use unofficial 64-bit versions which 
work fine so far.


73,
Mike ab3ap

On 8/1/19 5:15 PM, Steve Boles wrote:

Thanks so much for the numerous responses.  A month ago a bought a 13" Dell
with "factory loaded" UBUNTU and have been very pleased with its
performance.  I'm very new to UBUNTU but have run Puppy in the past and
have been very pleased with it.  Two more questions if I may...  Is UBUNTU
compatible with the Elecraft maintenance software?  And, any thoughts about
CQRLOG logging program?   Thanks & 73...  Steve (ARS: WB4SED)   //

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Re: [Elecraft] equalizer on k4

[Mike Markowski]

Since the K3 EQs are a little cumbersome to adjust, I wrote a small python
program a year or two ago:

  http://udel.edu/~mm/ham/elecraft/eq.html

The down side is that if you have another program querying the K3 while
running this, commands and replies intersperse.  I tend to run it to adjust
the EQs, then stop it before running my logging program.  I keep meaning to
write a linux K3 proxy to avoid the avoid the issue, but I find it much
easier to procrastinate. :-)  To other python programmers, please feel free
to enhance and share.

73,
Mike ab3ap

On Tue, Jul 23, 2019 at 12:23 PM Wayne Burdick  wrote:

> Yes. So is the EQ on our other transceivers.
>
> EQ on the K4 will be more easily adjustable, with a much better user
> interface, thanks to the large LCD.
>
> 73,
> Wayne
> N6KR
>
> 
> elecraft.com
>
> > On Jul 23, 2019, at 8:35 AM, Richard Donner 
> wrote:
> >
> > Does anyone know if the equalizer on the K4  is going to be  adjustable
> > real time so that you can listen to a station and adjust the equalizer as
> > you listen to the station.
> > Richard
>
>
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Re: [Elecraft] Prospective K4

[Mike Markowski]

Hi Wayne,

On 5/5/19 1:03 PM, Wayne Burdick wrote:

Grant Youngman  wrote:

Flex has always had issues with CW — QSK with too much latency to work to, now, 
clunky QSK?


That latency is due to processing even the demodulation channels in the 
frequency domain.


Can you explain this a little more?  It's probably clear to many, but 
not me. :-)  I think of 'channel' as the RF channel, but this is used 
differently. A demod channel as opposed to what other sorts of channels?


Also, since an fft/ifft change over between frequency and time is the 
norm in SDRs, why does it matter at what point processing is performed?


Not doubting, wanting to understand.  Tnx es 73.
Mike ab3ap
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[Elecraft] OT: K Line's 100th

[Mike Markowski]

Google does a pretty good job of bringing up things on my phone that I'm
interested in. But I got a smile when this one showed up. Nothing is
infallible, even machine learning. :-)

https://splash247.com/new-boss-strikes-sombre-tone-as-k-line-turns-100/

73,
Mike ab3ap
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Re: [Elecraft] Will there be a K4

[Mike Markowski]

Eric,

On the computer side of things, how about:

1. Ethernet, socket-based communication with rig.  Imagine AUTO INFO
replies direct to IP/port!  No more clashing programs.
2. Everything controllable by commands (like RF gain).
3. Info directly gettable.  E.g., no need to 'decode' display.
4. State directly settable. No need to emulate series of button pushes.
5. Pixel based display can convey much info when used with care. (Graphs,
block diagram showing what is affected by a control.  Things like, but
better & more compact than, my old K2DSP code:
http://udel.edu/~mm/ham/elecraft/k2filter/ )

73,
Mike ab3ap

On 25/03/2019 07:14, Eric Swartz WA6HHQ - Elecraft wrote:
> > Inquiring minds want to know:
> > What would you all like to see as a “K4” ?
> >
> > Eric
> > elecraft.com
>
>
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Re: [Elecraft] OT: Metric system

[Mike Markowski]

Just for correctness, it's not 2 African countries but Liberia and Myanmar.
I can only guess that there is no economic incentive for the US to switch.
Money talks, as they say...

73,
Mike ab3ap


On Sun, Feb 24, 2019, 6:17 PM Ken G Kopp  wrote:

> Sadly, only -three- nations remain non-metric.  The U.S. and two African
> countries.  Shameful!
>
> 73 !
>
> K0PP
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Re: [Elecraft] Coax Switches / dBm & W in python

[Mike Markowski]

On 2/17/19 4:32 PM, Andy Durbin wrote:

"
from math import *
w2dbm = lambda x: 10 * log10(x/10) + 30
dbm2w = lambda x: 10 ** ((x-30)/10)
iso = lambda pwr_W, iso_dB: dbm2w(w2dbm(pwr_W) - iso_dB)

and now something like

  >>> iso(1500, 60)
0.001500

tells you that 1500 W with 60 dB isolation leaks 1.5 mW to the other port."

Does dividing 1,500 by 10 to the power of 6 really need a computer and a Python 
script?  Why not just move the decimal point 6 times?

73,
Andy, k3wyc


Bad example. :-)  Use messier numbers.  General shack use for quick 
conversions is the point.


73,
Mike ab3ap
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Re: [Elecraft] Coax Switches / dBm & W in python

[Mike Markowski]

At work (RF lab), dBm power units let a feeble-minded engineer :-) use 
plus/minus rather than times/divide with Watts for calculations.


For isolation and other calculations in the ham shack where Watts are 
used, a few python one-liners useful.  (Python is free and runs on 
Windows, Mac, linux.)  When in python, copy the following:


from math import *
w2dbm = lambda x: 10 * log10(x/10) + 30
dbm2w = lambda x: 10 ** ((x-30)/10)
iso = lambda pwr_W, iso_dB: dbm2w(w2dbm(pwr_W) - iso_dB)

and now something like

>>> iso(1500, 60)
0.001500

tells you that 1500 W with 60 dB isolation leaks 1.5 mW to the other port.

73,
Mike ab3ap

On 2/17/19 10:38 AM, James F. Boehner MD via Elecraft wrote:

I  use the Alpha Delta Series.  They have SO-239 and "N" connector
models, two position or four position.  For the price difference, I
always get four position.

They are not only well built switches, but they do have surge
protection (gas) with a replaceable pill.  Their best feature is the
very high isolation they offer:

30 MHz  >60 dB 150 MHz >50 dB 450 MHz 50 dB

And dB Loss:

30 MHz  0.1 dB 150 MHz 0.15 dB 450 MHz 0.5 dB

So, I wish these could be remotable.  However, they are the best
switches I've found for a reasonable price, and I have many of them
in my station.

Oh yes, on the outside of my house, I have polyphasers.

'73 de JIM N2ZZ



I do use a number of Daiwa 2-position coax switches for various 
purposes. Any comments on coax switches?


Bill W2BLC K-Line




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Re: [Elecraft] Latest Elecraft NEWS

[Mike Markowski]

My old time shack, like Don describes, which never fails to make me 
better appreciate my K3:


  http://udel.edu/~mm/ham/skcc/ot2.jpg

73,
Mike ab3ap

On 1/25/19 4:52 PM, Don Wilhelm wrote:

[...]
Yes, there was a time when transceivers did not exist, and many 
transmitters did not come with a VFO.  Many VFOs were external to the 
transmitter.


73,
Don W3FPR

On 1/25/2019 4:35 PM, Jan wrote:

[...]
QUESTION: Did your Heathkit HW-16 not have a tune-able receiver? So, 
why the Hallicrafters mention ??

[...]

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Re: [Elecraft] NEW Elecraft Webpage now up

[Mike Markowski]

I can't find the link on the new page to the 64-bit linux Elecraft
utilties.  ;-)

73,
Mike ab3ap

On Thu, Oct 18, 2018 at 10:54 PM Wayne Burdick  wrote:

> > Here are a couple things I'm having trouble finding:
> > Builder resources: kit advice, soldering tips, etc
> > I saw eham reviews, didn't see ARRL or rig comparison chart.
>
> Thanks for all the input, gang...please keep it coming. We know there will
> be lots of minor (and some major) improvements to make as time permits.
>
>
> 73,
> Wayne
> N6KR
>
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Re: [Elecraft] K3 : Rack Mount Option?

[Mike Markowski]

I shared this a little while back.  My solution isn't as slick as rack
mounting, but has a smaller footprint (about 14" x 14" or so) and great
ventilation.  :-)

   http://udel.edu/~mm/ham/elecraft/rack/

73,
Mike ab3ap

On Fri, Sep 21, 2018 at 9:13 PM hawley, charles j jr 
wrote:

> My rack mount shelves have 17 1/2 inches of space. I mount them with the
> shelf extending into the rack cabinet.
>
> Chuck Jack
> KE9UW
> ...
>
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Re: [Elecraft] "The Elecraft Story"

[Mike Markowski]

Pete,

In 2011 Wayne wrote up a nice history.  An Elecraft wikipedia page points
to it, and I put it on a web page here:

   http://udel.edu/~mm/ham/elecraft/history/

Just ignore the graph up top.  Out of date ponderings!

Maybe Wayne & Eric can flesh it out, update where needed, and put it on
elecraft.com.  :-)

73,
Mike ab3ap

On Fri, Jul 27, 2018 at 10:52 AM, N4ZR  wrote:

> It strikes me that an article, or even a book about this would be
> welcome.  Or has it already been done?  If so, a reference would be
> appreciated.
>
> --
>
> 73, Pete N4ZR
> Check out the Reverse Beacon Network
> at , now
> spotting RTTY activity worldwide.
> For spots, please use your favorite
> "retail" DX cluster.
>
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Re: [Elecraft] KX3 Utility Linux version

[Mike Markowski]

I don't reach as far back as bus & tag pairs, but I'm with you, Rich. 
:-)  TOPS-10, MCP, VMS, and the best - Unix!  A picture I shared here 
recently of a fun little retro computer recreation:


  http://udel.edu/~mm/pidp8i/

Running the original os/8.  Fun stuff.

SPOOL...system peripheral  off line.  Almost!

73,
Mike ab3ap

On 06/12/2018 09:08 PM, rich hurd WC3T wrote:

Brownie points if you know what SPOOL meant. Without resorting to
Google-fu.

I'm still a green-screen guy at heart.  Give me a raised floor and a bunch
of bus and tag pairs, and I'm in heaven.

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Re: [Elecraft] KX3 in International carry-on luggage?

[Mike Markowski]

Somewhat along those lines, at work our Keysight tech rep (formerly 
Agilent, formerly HP) was driving to a customer location and had a 
backseat full of electronic lab measurement equipment.  He said the LO 
in something set off a police radar-detector detector, and radar 
detectors are illegal in the state he was in.  After being pulled over 
he was certain the cop would see a back seat full of cables, high tech 
gadgets, and think he was up to no good.  He told the cop he didn't have 
a radar detector and they could go through the equipment to find the one 
that set off his detector.  The cop looked at all the gear and just said 
to keep driving.  :-)


73,
Mike ab3ap

On 05/25/2018 09:54 AM, Buck wrote:
Take an an ad or manual with you so you can show them what it is.  I 
went through Reagan National, JFK and ElAl, the tightest security in the 
world, and no one said anything.  The rig, coax and antenna wire looked 
like a bomb to me.  It was in carrying-on for the trip over and packed 
in luggage on the way back.


Buck, k4ia
Honor Roll
8BDXCC
EasyWayHamBooks.com

On 5/25/2018 8:44 AM, Gerry Hull wrote:

Hey,

Thanks for the quick replies.  Not going to worry about it.

73. Gerry W1VE

Gerry Hull, W1VE  Hancock, NH USA
Member: ARRL, YCCC, YCCCN, CW Ops
ge...@w1ve.com ph: 1-617-CW-SPARK (find me)




On Fri, May 25, 2018 at 8:15 AM, Gerry Hull  wrote:


Waiting for my KX3 to arrive.  I will be doing some international travel
in the summer.  Just wondering if anyone has carried the KX3 in carry on
luggage or a backpack.  Do security officials get upset with the 
battery?


73, Gerry W1VE
--
Gerry Hull, W1VE  Hancock, NH USA
Member: ARRL, YCCC, YCCCN, CW Ops
ge...@w1ve.com ph: 1-617-CW-SPARK (find me)





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Re: [Elecraft] K4

[Mike Markowski]

Some solder smoke, a Raspberry Pi, and modern 'retro' computing!

  http://udel.edu/~mm/pidp8i/

:-)

73,
Mike ab3ap

On 05/18/2018 05:13 PM, Michael Gillen via Elecraft wrote:

I cut my programming teeth on a VAX-11/780 - sure brings back some great 
memories… thanks!

Michael
KK6RWK



On May 18, 2018, at 2:04 PM, Walter Underwood  wrote:

I consider the K3S to be what Gordon Bell called a “mid-life kicker”. That is a 
technology upgrade with small changes to the design. It extends the life of a 
product without the cost of a major redesign. It can be a very smart move.

For example, the VAX-11/785 was the same as the VAX-11/780, but built with a 
faster logic family so it was 50% faster. That is a pure example—a DEC 
spokesman called it “bug for bug compatible”.

This is the section on “mid-life kickers” from a long chapter by Bell, Mudge, 
and McNamara about technology and product strategy.

https://books.google.com/books?id=SDOoBQAAQBAJ=PA62=PA62=gordon+bell+mid-life+kicker=bl=qrJ7DM7xPt=YZyqZTRujNvDkGTgPQffOUv2UBo=en=X=2ahUKEwjI6fGJkJDbAhWHO48KHVSyCWUQ6AEwAHoECAEQKg#v=onepage=gordon%20bell%20mid-life%20kicker=false

And of course, you stay on top by obsoleting your own stuff before your 
competitors do that.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)


On May 18, 2018, at 1:41 PM, Jim Brown  wrote:

When your topline rig are is at or near the top of Rob Sherwood's list of the 
best receivers and of the cleanest CW transmitters tested by ARRL, and your 
super-portable rigs give most desktop rigs a run for their money on 
performance, and when you've got first-rate power amps at the 100w, 500W, and 
1,500W level, it's hard to justify the argument for a new transceiver.

73, Jim K9YC

On 5/18/2018 1:07 PM, Peter Pauly wrote:

I asked Eric if there were any new products and he said just the new amp
and the little portable antenna.

On Fri, May 18, 2018 at 3:36 PM, mark roz via Elecraft <
elecraft@mailman.qth.net> wrote:


Wow. No K4 at Dayton?


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Re: [Elecraft] K3 eq software available

[Mike Markowski]

Well, you know, benefit of the doubt and all that.  :-)

The three EQs are: Rx, Tx SSB, Tx Wide (am, essb, fm)

73,
Mike ab3ap

On 05/09/2018 01:16 PM, Fred Jensen wrote:
"polished, bullet-proof professional code." Oxymoron of the month!  What 
is the 3rd Equalizer in the K3?


73,

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

On 5/9/2018 7:52 AM, Mike Markowski wrote:
I wrote some python code to adjust the 3 EQs in the k3.  It's a 
personal effort and not polished, bullet-proof professional code.  But 
if interested please feel free to partake:


  http://udel.edu/~mm/ham/elecraft/

If you're a python programmer, please especially feel free to enhance. 
:-)


73,
Mike ab3ap

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[Elecraft] K3 eq software available

[Mike Markowski]

I wrote some python code to adjust the 3 EQs in the k3.  It's a personal 
effort and not polished, bullet-proof professional code.  But if 
interested please feel free to partake:


  http://udel.edu/~mm/ham/elecraft/

If you're a python programmer, please especially feel free to enhance. :-)

73,
Mike ab3ap
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Re: [Elecraft] K3 EQ settings?

[Mike Markowski]

Congrats on the DNA, Skip.  :-)  And thanks for the EQ info.  With info 
sent to me off-list by a few as well on your info on-list, I see 
variations by Jim k9yc and Bob Heil k9eid, likely due I assume to 
different mics & on-air advice for different op voices - unique for each 
environment.


Tnx es 73,
Mike ab3ap

On 05/06/2018 06:37 PM, Fred Jensen wrote:
I got mine from Jim, K9YC, a retired audio professional designer and 
consultant in large venues.  They are:


1 -14
2 -10
3 -6
4 -2
5 0
6 +4
7 +6
8 +10

I don't frequent phone much but when I do [like in an NAQP SSB or SS], I 
usually get one or two "great audio" comments.  While most of that is 
undoubtedly due to superior DNA, I think the K3 TX EQ has something to 
do with it. [:-)  Close-talking some mics tends to boost the lows too, 
sometimes significantly.


Jim points out that there is no value to power in the low frequencies, 
they carry almost no information.  Watching the P3 waterfall with a 
narrow span demonstrates dramatically how many SSB signals have all the 
power in the lows, crammed up against the suppressed carrier, and next 
to nothing out where it would be beneficial.


73,

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

On 5/6/2018 12:55 PM, Mike Markowski wrote:
I just finished writing a python program to make it easier to control 
the K3 internal EQs.  The impetus is to easily adjust in response to 
on-air reports, or to adjust when using MON to listen to myself in 
headphones.


One of the things I've done is to include a file of presets drawing 
from recommendations of knowledgeable hams.  An example is shown at:


   http://udel.edu/~mm/ham/elecraft/python/

Are there are other recommendations from anyone?  I'm especially 
looking for recommendations coming from those with substantial audio 
background.  The idea is for us audio neophytes to steal, er, learn 
from the learned!


I'm restoring a Heathkit line of DX-60B xmtr, HR-10G vfo, and HR10 
rcvr.  The DX-60B is cw or am, so I've become interested in AM 
settings of late.  :-)


Tnx es 73!
Mike ab3ap


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[Elecraft] K3 EQ settings?

[Mike Markowski]

I just finished writing a python program to make it easier to control 
the K3 internal EQs.  The impetus is to easily adjust in response to 
on-air reports, or to adjust when using MON to listen to myself in 
headphones.


One of the things I've done is to include a file of presets drawing from 
recommendations of knowledgeable hams.  An example is shown at:


   http://udel.edu/~mm/ham/elecraft/python/

Are there are other recommendations from anyone?  I'm especially looking 
for recommendations coming from those with substantial audio background. 
 The idea is for us audio neophytes to steal, er, learn from the learned!


I'm restoring a Heathkit line of DX-60B xmtr, HR-10G vfo, and HR10 rcvr. 
 The DX-60B is cw or am, so I've become interested in AM settings of 
late.  :-)


Tnx es 73!
Mike ab3ap
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Re: [Elecraft] Samuel Morse's birthday (Friday, April 27th); good excuse to break out your old hand keys

[Mike Markowski]

Wayne, you are!  73 es tnx qso,

Mike ab3ap

On 04/27/2018 08:45 PM, Wayne Burdick wrote:

QSL, Dave.

I worked a bunch of stations in a row on 14.038. Thanks, guys, for making me 
feel like rare DX :)

73,
Wayne
N6KR




On Apr 27, 2018, at 5:39 PM, David Bunte  wrote:

Wayne -

Many thanks for posting where you were on 20. I did not see any spots for you, 
and you were down in the noise far enough that I would not likely have found 
you... but then I heard your CQ 'just' well enough to tell that it was you. 
Snagging CE2SV on 10 meters, and working you for the first time, were manor 
highlights of this special day.

Thanks for the QSO (brief tho it was).

Dave - K9FN

On Fri, Apr 27, 2018 at 8:22 PM, Wayne Burdick  wrote:
FWIW, I’m calling CQ on 14038 right now. Band is noisy but W1AW is booming in.

Wayne
N6KR

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Re: [Elecraft] Art of Electronics

[Mike Markowski]

Robie,

I don't have all editions to compare, but think newest is usually best. 
Maybe others know better?  The book is an intro, though very detailed!, 
and doesn't cover much in the way of RF to my recollection.  It would be 
a foundation that makes RF design easy to follow, though.


Others might have better recommendations for ham-specific books.  But if 
you leaf through something like ARRL's "Introduction to Radio Frequency 
Design," you'll probably get more from it after a book like Art of Elec.


73,
Mike ab3ap

On 04/08/2018 11:28 AM, Robie Elms wrote:

Which edition is the most useful for hams?

Robie AJ4F


On Apr 8, 2018, at 10:14, Mike Markowski <mike.ab...@gmail.com>
wrote:

Chuck and all,

It really is a great book, the best I've found on the topic for my
style of learning.  I really like math but also need concrete
examples.  I like their approach of "here's how we might approach
this," leading to shortcomings, to how to improve, etc.  Very
methodical rather than jumping straight into the best solution
without knowing where the model came from.

In general, I find electronics learning - or really, learning
anything - to be iterative.  I'd take the math class, then the EE
and understand some.  As more math or EE clicked I'd understand the
other a little better.  And so on.  At long last, I'm ready to
compete with those kids who skated through university
effortlessly...as retirement is only a decade away!  Better late
than never.  :-)

73, Mike ab3ap


On 04/07/2018 07:17 PM, hawley, charles j jr wrote: That’s a
great book, “The Art of Electronics”. Horowitz and Hill, Harvard
and Rowland institute for Science. Interesting about the math. I
learned the math, though, in EE courses and found that to be a
plus. Math with an application. Seemed like I was always taking
the math course after I learned the math the semester before in
an EE course. Anyway, I bought the book when I was already on the
job and it was a great source of ideas and understanding. Chuck 
KE9UW

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Re: [Elecraft] Art of Electronics

[Mike Markowski]

Chuck and all,

It really is a great book, the best I've found on the topic for my style 
of learning.  I really like math but also need concrete examples.  I 
like their approach of "here's how we might approach this," leading to 
shortcomings, to how to improve, etc.  Very methodical rather than 
jumping straight into the best solution without knowing where the model 
came from.


In general, I find electronics learning - or really, learning anything - 
to be iterative.  I'd take the math class, then the EE and understand 
some.  As more math or EE clicked I'd understand the other a little 
better.  And so on.  At long last, I'm ready to compete with those kids 
who skated through university effortlessly...as retirement is only a 
decade away!  Better late than never.  :-)


73,
Mike ab3ap

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

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

Sent from my iPhone, cjack


On Apr 7, 2018, at 3:35 PM, Mike Markowski <mike.ab...@gmail.com> wrote:

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

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

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

73,
Mike ab3ap

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

[Mike Markowski]

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

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


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


73,
Mike ab3ap

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

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


73,

Fred

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Re: [Elecraft] Fred's vs Elecraft manuals

[Mike Markowski]

Fred and all,

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


Tnx es 73!
Mike ab3ap

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

Hi Neil

No never did a K2 book.

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

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

Fred KE7X

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Re: [Elecraft] Kpa1500 PSU orientation?

[Mike Markowski]

I'm headed with my son to a PSU Orientation (Penn State Univ) next week.
Jim, you had me excited that PSU has a ham club with a kpa1500.  I was
ready to enroll...  :-)

73,
Mike ab3ap

On Wed, Apr 4, 2018 at 1:53 PM, Jim Miller  wrote:

> I keep the KPA1500 PSU on its side feet when in operation under my desk.
>
> These feet are pretty thin. Should I put additional spacer boards beneath
> them to create more depth for airflow?
>
> 73
>
> Jim AB3CV
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Re: [Elecraft] Pie rack K-Line

[Mike Markowski]

Thanks, guys, for the replies and comments.  Bill nr4c, yes, I can reach
controls by having each device slid forward so that its front panel is just
beyond the shelf front edge.  The only issue is that the K3 tends to slide
back a little when a push/hold for a button's 2nd function is wanted.  I
need a non-skid surface between the K3 and shelf.

73,
Mike ab3ap

On Mon, Mar 26, 2018 at 11:53 PM, Nr4c <n...@widomaker.com> wrote:

> Looks nice but can you get to the controls?
>
> Sent from my iPhone
> ...nr4c. bill
>
>
> > On Mar 26, 2018, at 9:36 PM, Mike Markowski <mike.ab...@gmail.com>
> wrote:
> >
> > I found an economical way to go vertical with my Elecraft gear and save
> some desk space.  It's slightly off-beat - which suits me :-) - and I'm
> very happy with both cost and quality.  For any also interested in stacking
> their gear without the expense of rack mounting:
> >
> >   http://udel.edu/~mm/ham/elecraft/rack/
> >
> > 73,
> > Mike ab3ap
>
>
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[Elecraft] Pie rack K-Line

[Mike Markowski]

I found an economical way to go vertical with my Elecraft gear and save 
some desk space.  It's slightly off-beat - which suits me :-) - and I'm 
very happy with both cost and quality.  For any also interested in 
stacking their gear without the expense of rack mounting:


   http://udel.edu/~mm/ham/elecraft/rack/

73,
Mike ab3ap
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Re: [Elecraft] k3util 32-bit problem on Ubuntu

[Mike Markowski]

Rob and all,

On 03/22/2018 03:11 PM, Robert Felmey wrote:
Yes, this is probably along the lines of the thread I started.  However, 
despite the internet running on Linux and it being open source, it seems 
to infuriate people to see posts about it.


:-)  I started a note and stopped several times over the past weeks for 
that very reason.


To answer your question, yes, there is an effort to make a 64 bit 
version.  I helped Dave Fleming who maintains the software for Elecraft 
test a 64 bit version of the kx3util binary.  It worked perfectly with 
an up to date Linux install. 
Excellent news!  Thanks for sharing that.  I will stand in the shadows 
and wait patiently now.  :-)


73!
Mike ab3ap
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Re: [Elecraft] k3util 32-bit problem on Ubuntu

[Mike Markowski]

Thanks, Gordon.  lib32bz2-1.0 is not known by Ubuntu, but after some 
experimenting and googling based on your help I discovered:


 apt-get install lib32stdc++6

Progress, but now:

 ab3ap$ ./k3util
Failed to find/load Framework library
/home/mm/ham/elecraft/k3/k3util_1_15_6_27/./RBGUIFramework.so: cannot 
open shared object file: No such file or directory


Quick hack, I copied k3util into the "k3util Libs" directory [Unix name 
with space (?) :-( ]  But no joy:


  ab3ap$ ./k3util
  Failed to find/load Framework library
  libgtk-x11-2.0.so.0: cannot open shared object file: No such file or 
directory


Easy, right?  Install the aging gtk2:

  ab3ap# apt-get install libgtk2.0-0
  Reading package lists... Done
  Building dependency tree
  Reading state information... Done
  libgtk2.0-0 is already the newest version (2.24.31-2ubuntu1).
  0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

I forgot.  It's of course 64-bit, as one would expect, so:

  apt-get install libgtk2.0-0:i386

however this wants to install very many old 32-bit libraries.  Ugh.  I'm 
reluctant to turn my machine into a relic for this old software, though 
my K3 will become a (firmware) relic if I don't.  Not a good solution 
either way.  Debating what to do...


73,
Mike ab3ap

On 03/22/2018 12:17 PM, Gordon LaPoint wrote:
ia32-libs is no longer used in the newer versions of ubuntu (debian). 
Instead install:

lib32z1 lib32ncurses5 lib32bz2-1.0
This should fix the problems

Gordon - N1MGO

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[Elecraft] k3util 32-bit problem on Ubuntu

[Mike Markowski]

This is similar to the KX3 seg fault thread that is ongoing.

For the first time in a few months I tried to run k3util on a 64-bit Ubuntu
17.10 system and discovered that it no longer works.  I assume some OS
update removed the 32-bit files I used.  I *think* I used to have ia32-libs
installed for that.  I could be wrong, though, since that seems long out of
date.

Has anyone using Ubuntu got k3util to work?

Elecraft developers, any chance of a 64-bit version?  (Does anyone use
32-bit anymore?)

I'll tack on some possibly helpful info below.  Thanks!

73,
Mike ab3ap

ab3ap$ k3util
k3util: error while loading shared libraries: libstdc++.so.6: cannot open
shared object file: No such file or directory

ab3ap$ ldd k3util
linux-gate.so.1 =>  (0xf7f0f000)
libdl.so.2 => /lib/i386-linux-gnu/libdl.so.2 (0xf7ece000)
libpthread.so.0 => /lib/i386-linux-gnu/libpthread.so.0 (0xf7eaf000)
libstdc++.so.6 => not found
libm.so.6 => /lib/i386-linux-gnu/libm.so.6 (0xf7db)
libgcc_s.so.1 => /lib/i386-linux-gnu/libgcc_s.so.1 (0xf7d93000)
libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xf7bbd000)
/lib/ld-linux.so.2 (0xf7f11000)

ab3ap$ find /lib -name '*libstdc++*'
ab3ap$ find /lib32 -name '*libstdc++*'
ab3ap$ find /usr/lib -name '*libstdc++*'
/usr/lib/gcc/x86_64-linux-gnu/5/libstdc++.a
/usr/lib/gcc/x86_64-linux-gnu/5/libstdc++fs.a
/usr/lib/gcc/x86_64-linux-gnu/5/libstdc++.so
/usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.a
/usr/lib/gcc/x86_64-linux-gnu/7/libstdc++fs.a
/usr/lib/gcc/x86_64-linux-gnu/7/libstdc++.so
/usr/lib/gcc/x86_64-linux-gnu/6/libstdc++.a
/usr/lib/gcc/x86_64-linux-gnu/6/libstdc++fs.a
/usr/lib/gcc/x86_64-linux-gnu/6/libstdc++.so
/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.24
/usr/lib/x86_64-linux-gnu/libstdc++.so.6
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Re: [Elecraft] 3D-print case for KXPD2

[Mike Markowski]

Very nice, Johan!  A 3d printer is tempting, though I have no real 
need...  Kind of like this radio hobby we're all addicted to.  :-)


73,
Mike ab3ap

On 03/07/2018 02:59 PM, Johan Ymerson wrote:

Hi,

I just received my KXPD2 and needed a case to protect it.
Couldn't find one so I created one to print in my 3D printer :-)
Thought I share it for anyone who find it useful:https://
www.youmagine.com/designs/kxpd2-case

73 de SM0XHJ

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Re: [Elecraft] Feature suggestion: Power setting in dBm

[Mike Markowski]

It also eases estimating power out after gains and losses due to antenna,
coax, etc.  I can handle addition and subtraction.  :-)

I added readings in dBm to my now out of date W1 & W2 software faces
http://udel.edu/~mm/ham/elecraft/w1/
(I really should take the time to convert them to python...)

73,
Mike ab3ap

On Thu, Mar 1, 2018 at 3:07 PM, Steve Sergeant  wrote:

> Here's a suggestion across the line, from the KX2 to the K3S:
>
> I'd like to have the option to display and set transmit power in dBm
> rather than linear watts. Conceptually, it makes more sense to me, and
> it's a more meaningful number relating to S-units on the received side.
>
> --... ...--
> SteveSgt, KC6ZKT
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Re: [Elecraft] Photos of build

[Mike Markowski]

Thanks, guys, for understanding - and being interested.

It is a fun kit to build and is from Four States QRP Group, 
http://www.4sqrp.com .  This a regenerative design based on the famous 
Paraset and Atlantic Hopper, which Four States calls the Bayou Hopper.


I had my first qso on it yesterday and it really takes a bit of a fine 
touch to continually tune with one hand while the op is transmitting. 
But it's all part of the fun!  It puts out about 5 W to 6 W.


And then Agent 99...  :-D

73!
Mike ab3ap

On 01/28/2018 06:11 PM, Mark E. Musick wrote:

Not a problem Mike. It is radio related.
  You might fill us in on where you got it and cost. It looks like a nice QRP 
kit to build.
Can you give us details on power out etc.?
It would be an interesting poll to see how many on the reflector know who Agent 
86 is and who the girl is in the photograph. HI

73,
Mark, WB9CIF

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Markowski
Sent: Sunday, January 28, 2018 10:47 PM
To: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] Photos of build

Sorry!  Soon as I hit 'send' I realized I sent to the wrong group.

73,
Mike ab3ap (K1, K2, K3 op!)

On 01/28/2018 05:46 PM, Mike Markowski wrote:

Some photos of my effort!

http://udel.edu/~mm/ham/bayouJumper/

73,
Mike ab3ap

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Re: [Elecraft] Photos of build

[Mike Markowski]

Sorry!  Soon as I hit 'send' I realized I sent to the wrong group.

73,
Mike ab3ap (K1, K2, K3 op!)

On 01/28/2018 05:46 PM, Mike Markowski wrote:

Some photos of my effort!

   http://udel.edu/~mm/ham/bayouJumper/

73,
Mike ab3ap

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[Elecraft] Photos of build

[Mike Markowski]

Some photos of my effort!

  http://udel.edu/~mm/ham/bayouJumper/

73,
Mike ab3ap
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Re: [Elecraft] recommendations for CW paddles under $125

[Mike Markowski]

If you can stretch to $165, Kent Engineering paddles ( 
http://www.kent-engineers.com/ ) are very good.


73,
Mike ab3ap

Am 13.01.2018 3:56 nachm. schrieb "Niel Skousen" 
:

so all the HexKey discussion has awakened an itch to ask

What's the 'best' paddles under $125 ??

Niel
WA7SSA

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[Elecraft] python k3 interface

[Mike Markowski]

Happy 2018, fellow Elecrafters!

This note shares nothing earth shattering, but something I find much 
more useful than expected.  Using python, a super simple programming 
language, I just wrote a small k3 library of commands do simple things 
like retrieve or set frequency, keyer speed, enter/leave no-Tx mode, and 
so on.  Maybe an hour or two of programming.  As you need more commands 
you simply tack on more to your code.  A sample run - whose source code 
any interested are welcome to - with comments is below.  But programmers 
can easily write their own in short order.  Wayne (et al.?) have made it 
a snap.


73 es HNY,
Mike ab3ap

ab3ap$ k3
k3$ a   <-- Where is VFO A tuned?
7030.000 kHz
k3$ a 7025   <-- Tune VFO A to 7025 kHz
k3$ a   <-- Verify
7025.000 kHz
k3$ b   <-- VFO B?
7045.000 kHz
k3$ a 7025 1.3   <-- Set VFO A to SPLIT
k3$ b
7026.300 kHz
k3$ a 7025 0   <-- Leave SPLIT operation
k3$ k   <-- Keyer speed?
25 wpm
k3$ k 20   <-- Set keyer speed
k3$ k
20 wpm
k3$ p   <-- Power?
5 W
k3$ p 10
k3$ p
10 W
k3$ S   <-- Serial number?
SN 4516
k3$ date   <-- Pass unknown commands to shell.
Sun Dec 31 15:50:17 EST 2017
k3$
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Re: [Elecraft] KPA1500

[Mike Markowski]

I recognize you.  You're that mischief-making Christmas elf!  :-D

Vy 73,
Mike ab3ap

On 12/12/2017 06:11 PM, ROBERT MUELLER wrote:

Why don't we tell Wayne it is time to stop tweaking and start telling
us what their production schedule is and when they will start
shipping. If they intend to ship mid-December then they should have
production schedules in place right now.

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Re: [Elecraft] Suggestions for Introducing a 10-year-old to Amateur Radio and Electronics

[Mike Markowski]

Ted,

When my now-21 yr old son was about 14, he had by then earned his 
Technician and learned CW.  At that point he had an iPod and put an 
iambic keyer app on it.  He thought it would be fun to use as a key but 
I pointed out that that would be modulated CW and not actual CW.  Using 
his interest as an opportunity to teach some electronics, here's what we 
did:


1. Bought some equal valued resistors.  Then we could use series and 
parallel to get values needed.  A nice simple lesson there explaining 
why that is.


2. Bought a quad op amp chip.  This is harder to fully teach a kid, of 
course, but we wired up one as an inverting amplifier showing how the 
feedback resistor divided by the input resistor determines the scale factor.


3. We wired up another as a comparator using a potentiometer.

4. Used an NPN as a switch to key the rig.

In the end, ipod (now, smart phone!) audio goes to the amplifier.
Amp out goes to comparator whose output is triggered by cw audio in.
Comparator output goes to NPN switch to key rig.

And then you have the world's most high tech key.  :-)  We topped it off 
by having him solder together the circuit on perf board and mount it in, 
of course, an Altoids tin.  Maybe a mini project along these lines would 
work, tailored to suit his interests and age.


Good luck!
Mike ab3ap



On 10/15/2017 11:46 AM, Dauer, Edward wrote:

Looking for suggestion about books or kits or whatever else that might interest 
a ten year old to electronics and to amateur radio.  He is adept at mechanical 
things and pretty bright.  What else could he be?  He’s my grandson.

But his understanding of electronics is well insulated by contemporary smart 
phones and games and the like, about the innards of which one can learn nothing 
in the old way – the way we did it, by taking the family radio apart and then 
having to learn how to put it back together.

Any other grandpas or grandmas out there have experiences to share?

Thanks in advance,

Ted, KN1CBR

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[Elecraft] Question for SP3 owners

[Mike Markowski]

My current shack speakers need replacing and I read about the SP3s. 
Aesthetically, no question they are nice and I'm impressed Elecraft 
contracted a specialist to design them.  I don't take the K3 anywhere - 
just K1! - so ruggedness is not a need.


In such a situation have any here bought SP3s and have opinions to 
share?  Room size, previous non-SP3 speaker quality, hearing, and so on 
make comparing advice difficult, but I can't resist asking.


Tnx es 73,
Mike ab3ap
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Re: [Elecraft] A very desirable capability

[Mike Markowski]

Bob K4TAX,

Why 10 to 15 dB above - is your idea to have some margin for band noise 
floor changes?  It seems you'd maximize dynamic range by making the two 
equal.


Tnx es 73,
Mike ab3ap

On 08/26/2017 03:36 PM, Al Lorona wrote:

Once again, a beautiful post by Bob. [...]

R, Al  W6LX
___

[...]  A point to consider is optimum receiver performance occurs when the
band noise floor is 10 dB to 15 dB above the receiver noise floor. [...]

73
Bob, K4TAX

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[Elecraft] CP1 vs other directional coupler

[Mike Markowski]

I'd like to get a directional coupler to, among other things, monitor my 
transmit signal on a scope.


The Elecraft CP1 kit is priced well, but I'd want it in a metal box with 
panel mount connectors, SO-239 for the main RF path.  I'd also rather 
use 50 ohm terminators rather than switches, so at that point it 
probably makes sense to build my own.  Just curious what others have 
done and if there are recommendations for reasonably priced, 
commercially available directional couplers for HF at 100 W or more.


Tnx es 73,
Mike ab3ap
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Re: [Elecraft] Feynman - A little theory

[Mike Markowski]

Feynman was the adviser of a now-retired coworker, Ben.  He told Ben to 
give up study of physics unless it was a true passion because that was 
the only way to succeed in anything.  Ben said he realized this was the 
only advice he needed to change majors and later succeed in his new 
field.  His main regret in doing so was losing Feynman as adviser.  Not 
exactly related, another retired coworker as a young researcher used to 
take a train up to Princeton each month to lunch with Einstein.  I loved 
listening to stories from these older guys when I was a young, new guy!


73,
Mike ab3ap

On 04/16/2017 05:42 PM, Bob Nielsen wrote:

I did meet him.  The first thing he said to me was, "Call me Dick", as
he wasn't much for titles.  When he was scheduled to give a lecture to
the freshman class at Caltech we were told to arrive early because the
upper-classmen would fill up the lecture hall.  In addition to his work
in theoretical physics, he was a master of the bongo drums.  A
somewhat-fictionalized film of Feynman's time at Los Alamos is
"Infinity" starring Matthew Broderick.

73, Bob N7XY

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Re: [Elecraft] OT: FS Raspberry Zero W and accessories

[Mike Markowski]

Pi Zero W & accessories have been sold.  Thanks!   - Mike ab3ap

On 04/09/2017 04:34 PM, Mike Markowski wrote:

I bought a Raspberry Pi Zero W a few days ago for a project and then
realized I need a Raspberry Pi 3.  [...]

Thanks!
Mike ab3ap

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[Elecraft] OT: FS Raspberry Zero W and accessories

[Mike Markowski]

I bought a Raspberry Pi Zero W a few days ago for a project and then 
realized I need a Raspberry Pi 3.  I can return the purchase but since 
the Zero W's are tough to find and often out of stock, thought I'd offer 
up the set here if any are interested.  I'm selling as a set for exactly 
the price I paid.  I bought them last week and they have not been 
removed from bags/boxes.  Luckily I read more on the project before 
doing that.  If only I read that much -before- purchasing!  :-)


Raspberry Pi Zero W: $10.60
Mini-HDMI / HDMI cable [QVS]: $26.49
USB 3.0 hub + SD card reader + OTG adapter [inland iH3048A]: $15.80
USPS Priority Shipping: $7.15

You pay: $60.00

Thanks!
Mike ab3ap
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Re: [Elecraft] K2 / DSP

[Mike Markowski]

I had trouble remembering how to navigate the kdsp2 menus for adjustment 
and wrote a program to help:


  http://udel.edu/~mm/ham/elecraft/k2filter/

It works but is clunky in some ways.  Before knocking off the rough 
edges I got my K3 and the kdsp2 code has been neglected ever since. 
Anyone interested is welcome to the code but I can't offer assistance. 
Not so much because I don't want to, but it's been several years and the 
coding details have grown fuzzy!


73,
Mike ab3ap

On 12/24/2016 11:39 AM, Phil Wheeler wrote:

Years ago I replaced the KAF2 with a KDSP2 and far preferred the
latter.  But it is fussy to adjust and many seem to prefer the KAF2.

Phil W7OX

On 12/23/16 8:46 PM, Dauer, Edward wrote:


I have never had a K2 with a KDSP2 so I can’t make an informed
comparison; but I can say that, having one in both of my K2s, the KAF2
makes the K2’s performance truly outstanding. As I understand it,
having both was never possible – it was one or the other.  Maybe
someone can offer a comparison . . .

Ted, KN1CBR



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Re: [Elecraft] K3S - Build or Buy

[Mike Markowski]

Erector Set without the cut fingers.  :-)

73,
Mike ab3ap

On 09/06/2016 03:24 PM, Terry Schieler wrote:

Earl, K4KAY wrote " No soldering, just a lot of small screws, nuts,
washers and lock washers. My age is 78."

I am 69 and with apologies to all the members of this site who don't
have enough years behind them to get this, I will simply state "think
Erector Set".

Terry, WØFM

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Re: [Elecraft] The 1500 watt amp

[Mike Markowski]

Jer & Fred,

You're right from a certain point of view.  But also consider more 
generally that it's about link budget; maximize gains, minimize losses. 
How much of each a ham can do comes down to money & motivation within 
lifestyle (& FCC!) constraints.


73,
Mike ab3ap

On 08/01/2016 01:47 PM, Fred Moore wrote:

I'm with you Jer..

I always wonder that some of you guys "cost/QSO" is..  it only a hobby,
[...]

Fred


On 8/1/16 9:50 AM, Jerry Moore wrote:

I don't see the point of having a large power amp. It doesn't help receive.
[...]

Just my view.
Jer

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[Elecraft] K3: Using Linux - OT

[Mike Markowski]

Regarding networking linux and Windows, it's not an issue these days. 
At work our lab has a network of gear from Keysight, Tektronix, and 
Rohde & Schwarz, as well as Windows and linux computers.  Absolutely no 
issues and none of us are IT guys.  We managed - thank you, Google! - to 
set up one machine as dhcp server, ntp server and file server.  Another 
runs an ubuntu mirror since our lab must remain off the internet.


We record and edit signals with Keysight software on Windows, automate 
tests in python on linux, and run Matlab on both OSes.  A web server for 
the lab makes data accessible throughout.  We find that Windows is good 
for 'canned' software when you need to run commercial stuff.  When you 
need to do custom work linux is the way to go.  To format higher 
mathematics use LaTeX on either OS.


Bringing this back to ham radio, I think OS can be chosen along similar 
lines.  Mix and match what you need with whatever OS supports it.  Our 
lab is proof that it's not hard anymore.


73,
Mike ab3ap
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Re: [Elecraft] K3: Using Linux

[Mike Markowski]

Yes, it is just as easy.  I have no trouble using it for firmware 
updates, etc.


73,
Mike ab3ap

On 07/30/2016 09:38 PM, Bill wrote:

I am only interested in how well the Elecraft provided software under
Linux works? I do not use any third party stuff at all. Is it as easy
and straight forward as their Windows software?

K3 Utility, KPA Utility, etc.

Bill W2BLC K-Line

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Re: [Elecraft] K3: Using Linux

[Mike Markowski]

Yes!

What exists works well.  The selection is less than Windows, however.  I 
use hamlib/xlog/xdx and am happy in my simple world.


73 and enjoy,

Mike ab3ap, ubuntu distro (ex PDP11/70, VAX11/780, HP-UX, SGI, UNICOS, 
Solaris, BSD, gentoo, ???)


On 07/30/2016 08:29 PM, Bill wrote:

I am switching from Windows to Linux (Mint) and am wondering if the K3
and other support software works as well on Linux as it does on Windows?
Advice/comments from Linux users will me most appreciated.

Bill W2BLC K-Line

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Re: [Elecraft] K2 and Linux contest logging

[Mike Markowski]

Neil,

I'm far from a hard core contester but enjoy DXCC, Field Day, etc.  For 
me the best solution has been xlog along with hamlib & cwdaemon.  I made 
a small NPN transistor-based circuit in an Altoids tin to do serial port 
based PTT keying for cwdaemon.  (I picked up an Edgeport  usb-to-serial 
converter on ebay for $20.)  It's a simple set up and works well for my 
level of contesting.


It also has the advantage of keying any rig.  I use it with my K1, 
though of course hamlib can't interact with that rig.


Good luck and 73,
Mike ab3ap

On 06/04/2016 07:51 PM, Neil Martinsen-Burrell wrote:

For my first time ever, I have a computer connected to my radio!

[...]

Are there any K2 owners who use Linux computers for sending CW from a
contest logger? What do you do that works?

-Neil N0FN

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Re: [Elecraft] Elecraft Utilities

[Mike Markowski]

This would be a fantastic, much appreciated tool!

73,
Mike ab3ap, decades long Unix(-like) user

On 04/08/2016 04:24 PM, Jessie Oberreuter wrote:


[...] the following message, which essentially
requests a simple command-line firmware loader program.  [...]

-kb7psg

Date: Sun, 27 Mar 2016 17:52:34
From: Bruce Nourish 

As the subject suggests, I'd like to put in a feature request, for a
simple, command line firmware updater tool, for all applicable Elecraft
rigs. [...]

Thanks.
Bruce

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Re: [Elecraft] Switching to Linux

[Mike Markowski]

Bill,

Popular packages to consider:

1. Rig control: hamlib at http://sourceforge.net/p/hamlib/wiki/Hamlib/
2. Light weight logger: xlog at http://www.nongnu.org/xlog/
3. dxcluster: xdx at http://sourceforge.net/projects/xdxclusterclient/

4. Heavy weight logger: cqrlog at https://www.cqrlog.com/

Cqrlog is worth considering because it handles up/downloading to many 
qsl sites like Log of the Word, Clublog, etc.  But it uses MySql and 
sounds like it isn't the more minimal set up you're looking for.


I don't know of any linux K3 memory editors.

Good luck and you'll enjoy the change!  73,
Mike ab3ap

On 01/22/2016 03:27 PM, Bill wrote:

[...]
Is there a good rig control or memory manager for the K3 written for
Linux users. I do no DX or contesting and I do not use any of the new
digital stuff - so I don't need all that extra weight, unless it is
easily ignored or removed.[...]

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Re: [Elecraft] Switching to Linux

[Mike Markowski]

The funny thing, Nate, is this is a project that Pf ik5pvx and I started 
back then.  There is a tradeoff between taking time to reverse engineer 
and time to get on the air.  After a decent amount of success, we opted 
for air time instead!  :-)  Especially after a week at work, a weekend 
making contacts was more fun.  I wouldn't recommend using the code 
except as a starting point for further reverse engineering.


I think someone else got further on such a project but can't recall the 
program name.  Maybe someone else can.


73,
Mike ab3ap

On 01/22/2016 06:24 PM, Nate Bargmann wrote:

* On 2016 22 Jan 15:36 -0600, Mike Markowski wrote:


I don't know of any linux K3 memory editors.


My understanding is that the memory protocol has to be reverse
engineered.

Such a project was started:

https://github.com/ik5pvx/k3mem

It has a rather hefty disclaimer, etc.  The last commit to the
repository was in Sept 2011.

73, Nate, N0NB


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Re: [Elecraft] Manuals: Old-Radio

[Mike Markowski]

A great and thorough book!  (Though I have only the pdf.)

73,
Mike ab3ap

On 09/17/2015 05:58 PM, Alan D. Wilcox wrote:

[...]
Meanwhile Zverev LC filter manual continues on eBay …
www.ebay.com/itm/201426555139

Alan D. Wilcox, W3DVX
570-478-0736 (cell, text)
http://WilcoxEngineering.com
http://www.eham.net/reviews/detail/6768 ... Elecraft Client Comments

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Re: [Elecraft] Analog vs. Digital Front Ends

[Mike Markowski]

Don,

The broadband jammer is the most traditional of all in electronic 
warfare.  If a receiver can withstand substantial AWGN (additive white 
Gaussian noise), chirp, and CW jam, then that's the receiver for me.  :-)


73,
Mike ab3ap

On 09/15/2015 06:51 PM, Don Wilhelm wrote:

I am going to go off on a wild tangent as a method of testing all
receivers for the ability to copy signals in the midst of very crowded
band conditions and/or the presence of noise.  Whether those receivers
have analog front ends or an ADC.

An extremely crowded band could be simulated by broadband noise.
So take a medium strength single signal (say S-5) and inject it into the
receiver under test.
Now add a low amplitude broadband noise signal, and increase it until
the signal is buried in the broadband noise.

The receiver that can withstand the greater broadband noise level while
still recognizing the single signal "wins".
That says nothing about the overload of the ADC for those receivers that
put the ADC at the antenna - that is something for other test parameters.

73,
Don W3FPR

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Re: [Elecraft] Elecraft SP3 External Speaker details

[Mike Markowski]

Following up on Jim w6aim's comment, a friend of mine used to design 
cell phones was amazed at marketing people.  She says the difference in 
memory options, e.g., 16/32/64 GB, had an actual cost difference of 
US$1.  But the marketing group turned it into $100 difference - and 
people pay.  She said the engineering group incorrectly believed no one 
would fall for it!


Regarding radio speakers, I currently use out of production Dell 
computer speakers, left overs from work:


  http://www.amazon.com/Dell-A525-Computer-Speakers-Subwoofer/dp/B000GSVPLO

which are great with K3 and also listening to streaming music, youtube, 
etc.  They cost well under $100.  If pair of Elecraft speakers cost 4x 
as much & offer 4x as much (any specs yet?), it's a good deal.  But 
aesthetic value is uniquely personal - which is why such a long thread! 
 For me, Dell will likely be fine.  :-)


73,
Mike ab3ap

On 09/15/2015 09:00 AM, Jim Bolit wrote:

Cost and price are "loosely coupled".
Apple products are a perfect example of this
JimW6AIM

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Re: [Elecraft] Alternate W2 display on PC?

[Mike Markowski]

Mark,

I recently converted my old W1 code to work with W2 though am not able to
run and verify for a few days.  It might be worth a try of you like the
looks of the 'tiny' display:

  http://udel.edu/~mm/ham/elecraft

and go to the "W1 and W2 Control" link to see screenshots.  (The display
shows units in dBm but can also be displayed in Watts.)

Tnx es 73,
Mike ab3ap

On Mon, Sep 7, 2015 at 12:56 PM, Mark N2QT via Elecraft <
elecraft@mailman.qth.net> wrote:

> I'm trying integrate a couple of W2 wattmeters into an SO2R setup. As
> screen space is
> at a premium I was wondering if there was a way to display a smaller bar
> graph  without
> all the extra stuff.   (The old Wavenode power meters used to do this, but
> I lost a parallel
> port to talk to talk to them with the latest PC upgrade).
>
> Mark. N2QT
>
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Re: [Elecraft] HP50G

[Mike Markowski]

A really nice, free HP42s look alike is at

  http://thomasokken.com/free42/

73,
Mike ab3ap

On Tue, Aug 4, 2015 at 8:22 PM, VE3NFK john.turgo...@gmail.com wrote:


 If you have an ipad, ipod, iphone;  this $10 app will let you have an HP50G

 https://itunes.apple.com/us/app/hp50g/id553279622?mt=8

 73 John VE3NFK



 --
 View this message in context:
 http://elecraft.365791.n2.nabble.com/HP50G-tp7605875p7605904.html
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Re: [Elecraft] Memory Manager for Linux?

[Mike Markowski]

A few years ago in C on linux I played around with determining the 
undocumented memory map.  Pierfrancesco Caci IK5PVX joined in later and 
we spent some time decoding binary returns after changing a single 
setting.  We made good progress, but it's tedious and we instead 
returned to on-air pursuits!  Turns out I don't use the memories too 
often anyway.  I have other tiny C programs more useful to me.  It's 
possible to reverse engineer, though I never went so far as to write 
into memory for fear of doing something regrettable. :-)


73,
Mike ab3ap

Sample output from seconds ago using the -b (brief summary) option. 
Looks like I overwrote a 40m freq into my 10m memory!


mm@ab3ap$ k3mem -b 1-20
  1: 182 / CW   1824000 / CW   160M
  2: 21033990 / CW   21033990 / CW   80M
  3: 5366000 / USB   5366000 / USB   60M
  4: 700 / CW   700 / CW   40M
  5: 1010 / CW   1010 / CW   30M
  6: 1400 / CW   1400 / CW   20M
  7: 18068000 / CW   18068000 / CW   17M
  8: 24900650 / CW   24895510 / CW   12M
  9: 7111000 / CW   7114000 / CW   10M
 10: 14531 / FM-   14531 / FM-   W3UD PL 141.3 Hz
 11: 14539 / FM-   14531 / FM-   W3AD PL 118.8 Hz
 12: 14670 / FM-   14670 / FM-   W3DRAPL 131.8 Hz
 13: 14685 / FM-   14685 / FM-   WA3SF
 14: 146925000 / FM-   14531 / FM-   W3WANPL 74.4 Hz
 15: 14694 / FM-   146985000 / FM-   W3EOCPL 131.8 Hz
 16: 146955000 / FM-   146985110 / FM-   W3SC PL 131.8 Hz
 17: 146985000 / FM-   146985000 / FM-   FROGSPL 100.0 Hz
 18: 147015000 / FM-   14531 / FM-   W3RRRPL 118.8 Hz
 19: 14703 / FM-   14703 / FM-   PMONTPL 91.5 Hz
 20: 14706 / FM-   14706 / FM-   MARC PL 131.8 Hz


On 07/14/2015 04:10 PM, Dick Roth wrote:

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Tried installing the Memory Manager using Wine on my Ubuntu 14.04
machine.  Got an icon on the desktop, but nothing else seems to work.
Any chance the program may be ported to Linux in the future?  I'm not a
coder so I have to rely on those with the skills.

73,
Dick Roth
KA10Z

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Re: [Elecraft] Rig release history

[Mike Markowski]

Too scary a thought, Kevin!  I added shadings that instead show Wayne's and
Elecraft's efforts as phases or stages divided by the start of the K3
effort. Can the ham community support more phases (hiring, products, org
complexity)?  Can Eric's and Wayne's sanity withstand it??  :-)

73,
Mike ab3ap

On Wed, Apr 1, 2015 at 9:49 PM, kev...@coho.net kev...@coho.net wrote:

 A logistic curve is a good fit to that graph.  H
73,
Kevin.  KD5ONS


 On 4/1/2015 6:27 PM, Mike Markowski wrote:

 With the wondering, joking, occasional hint of provoking, about the K4, I
 looked back a couple decades.  Dates might be off a little, but the trend is

   http://udel.edu/~mm/ham/elecraft/history/

 with a hopeful dashed blue line added!

 73,
 Mike ab3ap



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[Elecraft] Rig release history

[Mike Markowski]

With the wondering, joking, occasional hint of provoking, about the K4, 
I looked back a couple decades.  Dates might be off a little, but the 
trend is


  http://udel.edu/~mm/ham/elecraft/history/

with a hopeful dashed blue line added!

73,
Mike ab3ap
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Re: [Elecraft] K2 Settings Retrieval Software

[Mike Markowski]

Hi Sverre and all,

I just recompiled the programs so that Java Web Start is no longer used. 
 I have only a linux machine to test things on, so can't guarantee 
things will run properly on other OSes at this point.  Please email me 
offlist if things don't run.


A few quick things about http://udel.edu/~mm/ham/elecraft/ :

1. Executables are now available as a zip file.
2. Source is now available as a .tar.bz2 file.
3. W1 also works with a W2 but not KAT500 despite a menu entry.
4. Please don't judge these spare time efforts too harshly. :-)
5. GUI work was often created with netbeans, so the netbeans-generated 
code is ugly when viewed with something other than it.


Regarding (4), these are programs that work for me, but have not 
undergone any sort of serious testing.  If you improve upon them, I'd 
love to get your updates!  For the coders, a word of warning that 
internal documentation is often somewhat, ah, lacking...


Tnx es 73,
Mike ab3ap

On 03/08/2015 05:22 PM, Sverre Holm (LA3ZA) wrote:

Hi Mike

Good to hear from you. I don't really know what it takes to make the
programs more useful. All I know is that everything that has to do with Java
has gotten more and more difficult to use, especially for Windows users. I
am running Windows 7 here myself.

Therefore, after quite some struggle with browsers and security, it was a
relief to find out that I could run the K2 Settings Retrieval Software from
the command line in Windows by just typing in

javaws params.jnlp

after having downloaded params.jnlp to my harddisk. I realize that the
security issues are caused by calls to your website. If a 100% local program
could do the same, then perhaps that would make it simpler, but I am just a
user, not a developer of these things, so I don't really know what it takes.





-
Sverre, LA3ZA

K2 #2198, K3 #3391,
LA3ZA Blog: http://la3za.blogspot.com,
LA3ZA Unofficial Guide to K2 modifications: 
http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html

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Re: [Elecraft] K2 Settings Retrieval Software

[Mike Markowski]

Hi all, and apologies that my Web Start effort causes problems on 
Windows 8.  (I'm a linux user and was unaware.)  Some quick ideas:


1. I am glad to recompile the code to not use web start.
2. I realize I never made the source code available, an oversight.

If either or both of those will be helpful, please let me know.

Also, many thanks for the kind words on the programs!

Tnx es 73,
Mike ab3ap

On 03/08/2015 04:26 PM, Kenneth Talbott wrote:

Unfortunately with the recent security upgrades these Java applications will
NOT execute on Windows 8.1 with Java 8 Update 40 UNLESS YOU ADD
http://udel.edu to Java's Exception Site List.  [...]

Hoping to be proven wrong,
Ken - ke4rg

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Sverre
Holm (LA3ZA)
Sent: Sunday, March 8, 2015 4:40 AM

I just wanted to remind the list of the AB3AP software found on
http://udel.edu/~mm/ham/elecraft/
[...]
-
Sverre, LA3ZA

K2 #2198, K3 #3391,
LA3ZA Blog: http://la3za.blogspot.com,
LA3ZA Unofficial Guide to K2 modifications:
http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html

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Re: [Elecraft] K2 Settings Retrieval Software

[Mike Markowski]

Hi all, and apologies that my Web Start effort causes problems with 
Windows 8.  (I'm a linux user and was unaware.)  Some quick ideas:


1. I am glad to recompile the code to not use web start.
2. I realize I never made the source code available, an oversight.

If either or both of those will be helpful, please let me know.

Also, many thanks for the kind words on the programs.

Tnx es 73,
Mike ab3ap

On 03/08/2015 04:26 PM, Kenneth Talbott wrote:

Unfortunately with the recent security upgrades these Java applications will
NOT execute on Windows 8.1 with Java 8 Update 40 UNLESS YOU ADD
http://udel.edu to Java's Exception Site List.  Since Java doesn't like
http:// you must click to accept the risk.  But the dialog in which you must
agree is hidden behind the Java security dialog and you CANNOT get to it.
And the default action is NO!  So, after you depress ADD to insert the url
into Java's Exception Site List you will see the same screen you saw upon
entry.  Stay calm!  Depress the TAB key to move to the focus from the hidden
NO button to the hidden YES button (you can't see this) then depress ENTER.

So PLEASE PROVE ME WRONG!  I will not flame or even be embarrassed.  This is
a PITA!

And I don't think the JNLP code will work off-line.  It still has to access
resources found at http://udel.edu.

BTW, the software is great!

Hoping to be proven wrong,
Ken - ke4rg

-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Sverre
Holm (LA3ZA)
Sent: Sunday, March 8, 2015 4:40 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K2 Settings Retrieval Software

I just wanted to remind the list of the AB3AP software found on
http://udel.edu/~mm/ham/elecraft/

I'm especially fond of the software for K2 Settings Retrieval about which
he says Save your K2 set up in case of an unexpected reset.

I have just serviced a K2 where the previous owner had had soldering
problems (untinned toroids, solder bridges, ...) as well as settings which
were far off. I find it useful then to start by reading out the settings to
figure out what the starting point is, as well as backing up all the values
when the calibration has been completed.

The AB3AP software is in the form of Java programs. My web browsers don't
allow them to be run, but simply downloading the code and running them from
the command line works fine. For a PC this is javaws params.jnlp.



-
Sverre, LA3ZA

K2 #2198, K3 #3391,
LA3ZA Blog: http://la3za.blogspot.com,
LA3ZA Unofficial Guide to K2 modifications:
http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K2-Settings-Retrieval-Software-tp759992
1.html
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Re: [Elecraft] Contemplating Purchase of K3

[Mike Markowski]

Gil,

If you're a cw operator, I make heavy use of the 400 Hz filter.  Not too 
narrow (usually), and not too wide.


73,
Mike ab3ap

On 03/07/2015 11:42 AM, Richard Gillingham wrote:

I’m thinking about purchasing the K3-100 kit.  [...] With this bare
bones K3, is there anything else that you all might feel is
indispensable?

73 to all and good DX

Gil, W1RG

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Re: [Elecraft] I/Q

[Mike Markowski]

Me neither, but here's a page with both nice illustrations and description:

  http://whiteboard.ping.se/SDR/IQ

73,
Mike ab3ap

On 03/03/2015 08:49 PM, Edward R Cole wrote:

not going to repeat what everyone has already posted:
[...]

73, Ed - KL7UW
http://www.kl7uw.com
 Kits made by KL7UW
Dubus Mag business:
 dubus...@gmail.com

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Re: [Elecraft] CW listening pitch

[Mike Markowski]

Add in 350 Hz to that and you have a dial tone.  (Really!)

73,
Mike ab3ap

On 02/28/2015 04:14 PM, Joe Subich, W4TV wrote:


440 Hz is A above middle-C.  Middle C is 261.6 Hz.

73,

... Joe, W4TV

On 2015-02-28 4:05 PM, Don Hall wrote:

Years ago I went to 440 (I believe this is middle C) and at 82, still
using it. Works for me.

73  Don  K5AQ

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[Elecraft] K3 DSP rev D board S/N's

[Mike Markowski]

Regarding the recent thread about the K3 DSP board, according to

  http://www.elecraft.com/K3/mods/dsp_rev_c_information.htm

it says that beginning serial number 3626 +/- 10, K3s shipped rev D of the
DSP board.

Hope the info is useful to some.  73,
Mike ab3ap
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Re: [Elecraft] Software perfection

[Mike Markowski]

Straight out of college I was one of 100+ design engineers on the Mode-S 
FAA air traffic control system - multiprocessor, fault-tolerant system, 
etc.  The design docs (let alone software) filled volumes.  Much as I 
hope there were zero bugs in the complex system, it was after all 
designed by people...


One thing I recall is that the FAA contract permitted 1 second of down 
time per year.  :-)


73,
Mike ab3ap

On 01/16/2015 10:28 PM, Dauer, Edward wrote:

You do exactly that every time you fly (commercial).

But it didn¹t stop me either.  That¹s what the humans are for.

Ted, KN1CBR (ex-CFI)


Date: Fri, 16 Jan 2015 19:40:54 -0700
From: Doug Person via Elecraft elecraft@mailman.qth.net

[...] Software written by the world's greatest programmer and tested by the
world's greatest software tester would still be something I would never
risk my life with.

73, Doug -- K0DXV

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Re: [Elecraft] Newbe question.

[Mike Markowski]

Hi Urb,

Probably CONFIG - PA is set to BYPass.  Change it to NORmal and you'll 
have your PA inline!


73,
Mike ab3ap

On 10/12/2014 10:48 AM, Urb LeJeune wrote:

Hi

I have a 100 Watt K3. When I adjust the PWR know it only goes up to
12.0 watts. How do I activate the 100 watts? I know I'm overlooking a
setting somewhere but I'll be darned if I can find it.

Thanks

73 Urb W1UL

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[Elecraft] Scope, anyone?

[Mike Markowski]

Hey all,

I have an analog scope, excellent in its day:

  http://udel.edu/~mm/tektronix/

If interested, please contact me.  It's yours if you can pick it up. 
(Sorry for poor phone pics.  Camera pics can be provided.)


I also was given an old Heathkit scope, ca. '62, from the estate of an 
SK.  Also free for the taking.


73!
Mike ab3ap
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Re: [Elecraft] K-line carrying cases

[Mike Markowski]

For the K Line these are quality, roomy and secure:
http://tinyurl.com/l3myusy

True, a little cumbersome.

73,
Mike ab3ap :-P


On Mon, Aug 25, 2014 at 7:57 PM, Phil Wheeler w...@socal.rr.com wrote:

 Very nice. But -- no wheels? :-)

 Phil W7OX

 On 8/25/14, 4:23 PM, Nick - VE3EY wrote:

 Here is something which may answer your questions:
 http://www.ae9k.com/home/elecraft-k-line/transport  [...]

 On Mon, Aug 25, 2014 at 9:52 AM, George via Elecraft 
 elecraft@mailman.qth.net wrote:

 I am interested in purchasing a packing case for my K-Line, [...]
 73, George, K5KG


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Re: [Elecraft] KDSP2 option's DSP firmware is open source

[Mike Markowski]

Gnuradio is a great little DSP workbench for that sort of thing.

73,
Mike ab3ap

On 08/19/2014 05:27 PM, Matt VK2RQ wrote:

[...]
These days, if you want to experiment with DSP algorithms, it is
probably more convenient to do prototyping on a general-purpose PC
with sound card.

73, Matt VK2RQ

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Re: [Elecraft] Slide rules

[Mike Markowski]

I have a couple nice bamboo Hemmi slide rules, one even devoted to 
electronics calculations, but my most cherished is a cheap 12 log-log 
plastic Sterling.  My late mom bought it for me from a drug store when I 
was in 8th grade.  It took weeks of begging and groveling till she gave 
me the $6 for it.  Then I'm sure I drove my parents crazy showing how I 
could calculate things.  Geek from day one.  :-)


73,
Mike ab3ap

On 08/15/2014 04:37 PM, Robert Friess wrote:

In addition to my 12 and 5 inch Post slide rules, I have my Dad's KE.[...]

On Fri, Aug 15, 2014 at 12:57 PM, Fred Jensen k6...@foothill.net wrote:

I still have my 12 KE Log-Log Duplex Vector rule, here on the desk[...]

On 8/14/2014 7:45 PM, Don Wilhelm wrote:

I still have my 12 inch Post slide rule[...]

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[Elecraft] OT: US Signal Corps rhombic book

[Mike Markowski]

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[Elecraft] OT: US Signal Corps rhombic book

[Mike Markowski]

Sorry, gang, seems I posted my last note as html which I was told was 
stripped resulting in an empty message.  Original follows.

=

Hi all,

Are any interested in a pdf of

  Construction of a Rhombic Receiving Antenna, US Army Signal Corps, 
March 20, 1943


It's 37 pages long, 15 pages of which are text and the rest tables  
drawings, and is7.3 MBytes.  It lays out the heavy duty design of 
rhombics as built by the then-US War Dept, not a backyard ham antenna 
project!  But a ham or club lucky enough to have enough land and spare 
change might make use of it.  Also, it contains no theory whatsoever. 
Rhombic Antenna Design, by AE Harper, Bell Telephone Laboratories, 
1941 is a good and similar vintage companion in that regard.  Harper's 
report also contains construction details.


I've mentioned it before on this list, but before US Army Ft. Monmouth, 
NJ closed a few years ago I enjoyed using their one surviving rhombic of 
the 2 originals.  Thinking of how much fun that was got me reading up on 
rhombics recently.  Some photos of that shack just prior to shut down: 
http://udel.edu/~mm/ham/monmouth/


73,
Mike ab3ap
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Re: [Elecraft] External controls for the K3?

[Mike Markowski]

Hisashi,

Not as convenient as physically remoting the buttons, but I wrote a 
small C program that sends commands to the K3.  I then made some short 
aliases using that program name.  If I type the letter a the K3 
sends my call, AB3AP.  If I type 9 it sends R 5nn TU (7 sends R 
57n TU, etc.).  No cramps.  :-)


73,
Mike ab3ap

On 04/03/2014 04:41 PM, Hisashi T Fujinaka wrote:

I'm embarassed to admit this but I have a question:
In CW pileups, I usually have M1 programmed to send my callsign and M2
to just send the standard callsign 5NN TU. The thread on ergonomics
made me think about the cramp I get in my hand holding it up by the top
of the rig.

Has anyone ever thought about remoting out the M1-M4 buttons? If it's in
the manual, I apologize; I'm not running on all cylinders today.

[...]
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Re: [Elecraft] Current version of Windows K3 Utility ?

[Mike Markowski]

I did the same a few days ago using an out of date linux K3 Utility.  What
a bad feeling.  :-o

I wonder if the firmware can be distributed with a file (or somehow with
info) indicating the minimum K3 Utility version number required.  That way
an out of date K3 Utility can complain about its aged decrepitness and not
even try to do an update that will fail.
73,
Mike ab3ap
On Fri, Feb 28, 2014 at 9:35 AM, Scott Manthe scott.man...@gmail.comwrote:

 I ran the current update with the wrong version of the K3 Utility and
 while the rig was bricked temporarily, it came back to life with no issues
 after I discovered the problem.

 73,
 Scott, N9AA

 On 2/28/14 9:14 AM, Buzz Dean wrote:

 Mille graci Didn't want to risk bricking another favorite this week.
 ---
 Buzz
 buzz.d...@gmail.com
 650 224-5530 cell


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Re: [Elecraft] My first Field Day...Wow... what a rush!

[Mike Markowski]

Sounds fun, Phil!  I wasn't quite so far from home.  I operated from the 
exceedingly remote and primitive conditions of my back deck.  Scant 
remains of a single bottle of Scotch provided sustenance for the event. 
 Luckily it and the 7.5 Ah battery held out for the duration.  Such 
difficult conditions anytime soon would be taxing, but 79 contacts at 5 
W, including Germany, no doubt leave the top guns slack jawed and 
envious.  (Laughter?  Is that laughter?...)


More seriously, you can see my watch for logging attached to the stand 
of the K1.  There are also small paddlettes with red finger pieces. 
There was something refreshing about sitting out back with a few sheets 
of paper, pencil and radio.  Most ops were sending at 25 wpm or less.  A 
fun few hours, highly recommended.  Pic of me (also submitted to arrl 
soapbox), the K1, a single malt:


   http://udel.edu/~mm/ham/fd2013/fd2013-i.jpg

73,
Mike ab3ap  '1B EPA'

On 06/23/2013 08:54 PM, Philip Townsend Lontz wrote:

I got to be the gota op for the Chama, NM W5YA club. Oh My God! I had
a really good time. Everyone had K3's running 5 watts. [...]

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Re: [Elecraft] K1 battery recommendations?

[Mike Markowski]

Thanks to everyone, both on  off list, who replied to my battery question!

73,
Mike ab3ap
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