Re: [Elecraft] Finding stuff on the 'net

[Buddy Brannan]

Wayne, I couldn’t have said this better, especially the bit about why you 
(ermmm…I) prefer my cw computer less. Computers are my day job. The Internyet 
is my day job. I love them both, but I like having that space where they are 
not. I even like taking it a step further and go straight key or bug. (Yes, I 
get a strange joy out of using a key that’s larger than the KX3 to which it is 
connected, but that’s neither here nor there.) I guess that having that space, 
having that skill, even at age 14 when I tried very hard to not like cw, is why 
I loved it in spite of myself, and why I love it still. It puts me into this 
place that nothing else ever has. I love its simplicity, both in concept and in 
what you need to use it, paired with the practice and skill it takes to use it. 
I still feel as though I’ve missed out a lot on the building experience, but 
I’m going to fix that shortcoming one way or another, one time or another. Even 
so, thanks for saying so well exactly those things I’ve felt for the past 33 
years. 

Vy 73,


Buddy Brannan, KB5ELV - Erie, PA
Email: bu...@brannan.name
Mobile: (814) 431-0962



> On Jun 8, 2020, at 9:02 PM, Wayne Burdick  wrote:
> 
> Guilty as charged :)
> 
> Wayne
> N6KR
> 
> 
>> On Jun 8, 2020, at 5:47 PM, kevinr  wrote:
>> 
>> I was looking for something else when I ran into this article.  I got close 
>> to the end when I thought, "I recognize this guy."  A few lines later my 
>> suspicions were confirmed :)  I'm sure he won't mind being re-posted here.
>> 
>>  73,  Kevin.  KD5ONS
>> 
>> 
>> 
>> 
>> I find that CW has many practical and engaging aspects that I just don’t get 
>> with computer-mediated modes like FT8. You’d think I’d be burned out on CW 
>> by now, over 45 years since I was first licensed, but no, I’m still doin’ it 
>> :)
>> 
>> Yes, FT8 (etc.) is a no-brainer when, despite poor conditions, your goal is 
>> to log as many contacts as possible with as many states or countries as 
>> possible. It’s so streamlined and efficient that the whole process is 
>> readily automated. (If you haven’t read enough opinions on that, see "The 
>> mother of all FT8 threads” on QRZ.com , for example.)
>> 
>> But back to CW. Here’s why it works for me. YMMV.
>> 
>> CW feels personal and visceral, like driving a sports car rather than taking 
>> a cab. As with a sports car, there are risks. You can get clobbered by 
>> larger vehicles (QRM). Witness road range (“UP 2!”). Fall into a pothole 
>> (QSB). Be forced to drive through rain or snow (QRN).
>> 
>> With CW, like other forms of human conversation, you can affect your own 
>> style. Make mistakes. Joke about it.
>> 
>> CW is a skill that bonds operators together across generations and nations. 
>> A language, more like pidgin than anything else, with abbreviations and 
>> historical constructs and imperialist oddities. A curious club anyone can 
>> join. (At age 60 and able to copy 50 WPM on a good day, I may qualify as a 
>> Nerd Mason of some modest order, worthless in any other domain but of value 
>> in a contest.)
>> 
>> With very simple equipment that anyone can build, such as a high-power 
>> single-transistor oscillator, you can transmit a CW signal. I had very 
>> little experience with electronics when I was 14 and built an oscillator 
>> that put out maybe 100 mW. Just twisted the leads of all those parts 
>> together and keyed the collector supply--a 9-volt battery. With this simple 
>> circuit on my desk, coupled to one guy wire of our TV antenna mast, I worked 
>> a station 150 miles away and was instantly hooked on building things. And on 
>> QRP. I’m sure the signal was key-clicky and had lots of harmonics. I’ve 
>> spent a lifetime making such things work better, but this is where it 
>> started.
>> 
>> Going even further down the techno food chain, you can “send” CW by 
>> whistling, flashing a lamp, tapping on someone’s leg under a table in civics 
>> class, or pounding a wrench on the inverted hull of an upside-down U.S. war 
>> vessel, as happened at Pearl Harbor. Last Saturday at an engineering club my 
>> son belongs to, a 9-year-old demonstrated an Arduino Uno flashing HELLO 
>> WORLD in Morse on an LED. The other kids were impressed, including my son, 
>> who promptly wrote a version that sends three independent Morse streams on 
>> three LEDs. A mini-pileup. His first program.
>> 
>> Finally, to do CW you don’t always need a computer, keyboard, mouse, 
>> monitor, or software. Such things are invaluable in our daily lives, but for 
>> me, shutting down everything but the radio is the high point of my day. The 
>> small display glows like a mystic portal into my personal oyster, the RF 
>> spectrum. Unless I crank up the power, there’s no fan noise. Tuning the knob 
>> slowly from the bottom end of the band segment to the top is a bit like 
>> fishing my favorite stream, Taylor Creek, which connects Fallen Leaf Lake to 
>> 

Re: [Elecraft] K3/100 suddenly shut down on FT8 TX

[Gwen Patton]

IT sounds like you're having a problem with the radio overheating and
shutting down. FT8 and other digital modes like it have VERY long duty
cycles, so the radio gets hot very fast. If the cooling can't keep up, the
radio shuts down to protect itself. Reduce your RF power and see if it
helps. If this hasn't happened for a long time, maybe you have a bad fan,
or maybe you need to clean the radio. It might have a lot of dust keeping
the fans from cooling it properly, just like a computer. I have to clean my
computer regularly, to get the cat hair out of it so it doesn't overheat!

I hope this helps!  ごきげんよう！

-=-=-=-=-=-=-=-=-
73,
Gwen, NG3P


On Mon, Jun 8, 2020 at 11:01 PM Yoshida Akira 
wrote:

> Bob
>
> When transmitting FT8, it suddenly shut down (power OFF) Of course I do
> not touch
> any button. It looks as if I push Power button.
>
> After a while I push Power button and it turns power ON.  Maybe Power
> button problem ???
>
> 73
>
> On 2020/06/09 11:42, Bob McGraw K4TAX wrote:
> > I’m curious.  When transmitting, why would one press the POWER button on
> the radio other than to turn the radio off?
> >
> > Something I am missing here.
> >
> > Bob, K4TAX
> >
> >
> > Sent from my iPhone
> >
> >> On Jun 8, 2020, at 9:34 PM, Yoshida Akira 
> wrote:
> >>
> >> Hi all
> >>
> >> Thanks for suggestions. All look OK to me.
> >>
> >> Power supply is Powerwerx ss-30DV. I do not use Powerpole connector
> >> in the front panel, instead use terminal in the back panel.
> >>
> >> I use this power supply for another TRX also and have never noticed the
> problem.
> >>
> >> 73
> >>
> >>> On 2020/06/09 9:00, Yoshida Akira wrote:
> >>> Hi all
> >>>
> >>> I have never seen this for many years, however I recently noticed twice
> >>> when transmitting FT8 with 100W. No alarm and error message.
> >>> When I simply push POWER button in front panel then it turns ON again.
> >>>
> >>> PA temp, DC voltage and DC current looks good. I do not believe RFI
> >>> cause this problem.
> >>>
> >>> Any idea ?
> >>>
> >> --
> >> 73 de aki
> >> JA1NLX
> >> __
> >> Elecraft mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:Elecraft@mailman.qth.net
> >>
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> >> Please help support this email list: http://www.qsl.net/donate.html
> >> Message delivered to rmcg...@blomand.net
> >
> --
> 73 de aki
> JA1NLX
> __
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[Elecraft] Joys of CW (skiing, an experiment in mixed metaphors)

[kevinr]

Running a CW net reminds me of skiing the trees in deep powder. The same 
exhilaration while being very much in the moment.


I plan the approximate path with my heart rate rising.  Then push off, 
test how conditions let me ski, find the first tree, and set my jet turn 
radius through each tree's bowl.  Any mistake instantly corrected before 
I crash.  My focus narrows to the task at hand while my mind wanders 
free, thinking of other things. "Must be ten below."  Tree.  "This snow 
is great!"  Tree.  "Keep your tips up!"  Tree.


"Can I make a clean corner which flows into the next without error?"  
Can I gather four QNI in one call up?  Can I run the group cleanly?  Any 
mistakes are fleeting because I'm quickly engaged with the next op.  
"Will that branch slap my face before I can get this pole up?"  Can I 
change the sentence on the fly to cover that spelling error? :)


Logging happens between trees.  A moment's pause in sending, grab a 
pencil, and write notes, temperatures, activities, RST, etc. Drop the 
pencil, make a reply, and call the next op.  Once a rhythm is 
established things flow effortlessly ;)  Change antennas and try again.  
Then I get to the lower slopes where speed slacks off and I'm working 
ops at ESP levels.  The trees pass more slowly and I start to see the 
bottom of the run.  When propagation has defined the depth of the catch 
I annotate my list and announce it.  Then off to chores or back to the 
lift?  Heart rate slows to resting.


   Let it SNOW!

  73,

 Kevin.  KD5ONS

-

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[Elecraft] Using P3 Remotely

[Ken Widelitz]

Is anyone using a P3 remotely? If so, how? What is the bandwidth required?

73, Ken, K6LA / VY2TT
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Re: [Elecraft] K3/100 suddenly shut down on FT8 TX

[Yoshida Akira]

Bob

When transmitting FT8, it suddenly shut down (power OFF) Of course I do 
not touch

any button. It looks as if I push Power button.

After a while I push Power button and it turns power ON.  Maybe Power 
button problem ???


73

On 2020/06/09 11:42, Bob McGraw K4TAX wrote:

I’m curious.  When transmitting, why would one press the POWER button on the 
radio other than to turn the radio off?

Something I am missing here.

Bob, K4TAX


Sent from my iPhone


On Jun 8, 2020, at 9:34 PM, Yoshida Akira  wrote:

Hi all

Thanks for suggestions. All look OK to me.

Power supply is Powerwerx ss-30DV. I do not use Powerpole connector
in the front panel, instead use terminal in the back panel.

I use this power supply for another TRX also and have never noticed the problem.

73


On 2020/06/09 9:00, Yoshida Akira wrote:
Hi all

I have never seen this for many years, however I recently noticed twice
when transmitting FT8 with 100W. No alarm and error message.
When I simply push POWER button in front panel then it turns ON again.

PA temp, DC voltage and DC current looks good. I do not believe RFI
cause this problem.

Any idea ?


--
73 de aki
JA1NLX
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--
73 de aki
JA1NLX
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Re: [Elecraft] K3/100 suddenly shut down on FT8 TX

[David Herring]

He hits the power button to turn it back on.

73,
David - N5DCH



> On Jun 8, 2020, at 8:42 PM, Bob McGraw K4TAX  wrote:
> 
> I’m curious.  When transmitting, why would one press the POWER button on the 
> radio other than to turn the radio off?   
> 
> Something I am missing here. 
> 
> Bob, K4TAX
> 
> 
> Sent from my iPhone
> 
>> On Jun 8, 2020, at 9:34 PM, Yoshida Akira > > wrote:
>> 
>> Hi all
>> 
>> Thanks for suggestions. All look OK to me.
>> 
>> Power supply is Powerwerx ss-30DV. I do not use Powerpole connector
>> in the front panel, instead use terminal in the back panel.
>> 
>> I use this power supply for another TRX also and have never noticed the 
>> problem.
>> 
>> 73
>> 
>>> On 2020/06/09 9:00, Yoshida Akira wrote:
>>> Hi all
>>> 
>>> I have never seen this for many years, however I recently noticed twice
>>> when transmitting FT8 with 100W. No alarm and error message.
>>> When I simply push POWER button in front panel then it turns ON again.
>>> 
>>> PA temp, DC voltage and DC current looks good. I do not believe RFI
>>> cause this problem.
>>> 
>>> Any idea ?
>>> 
>> -- 
>> 73 de aki
>> JA1NLX
>> __
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>> 
>> Help: http://mailman.qth.net/mmfaq.htm 
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>> 
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>> Please help support this email list: http://www.qsl.net/donate.html 
>> 
>> Message delivered to rmcg...@blomand.net  
> 
> 
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Re: [Elecraft] K3/100 suddenly shut down on FT8 TX

[Bob McGraw K4TAX]

I’m curious.  When transmitting, why would one press the POWER button on the 
radio other than to turn the radio off?   

Something I am missing here. 

Bob, K4TAX


Sent from my iPhone

> On Jun 8, 2020, at 9:34 PM, Yoshida Akira  wrote:
> 
> Hi all
> 
> Thanks for suggestions. All look OK to me.
> 
> Power supply is Powerwerx ss-30DV. I do not use Powerpole connector
> in the front panel, instead use terminal in the back panel.
> 
> I use this power supply for another TRX also and have never noticed the 
> problem.
> 
> 73
> 
>> On 2020/06/09 9:00, Yoshida Akira wrote:
>> Hi all
>> 
>> I have never seen this for many years, however I recently noticed twice
>> when transmitting FT8 with 100W. No alarm and error message.
>> When I simply push POWER button in front panel then it turns ON again.
>> 
>> PA temp, DC voltage and DC current looks good. I do not believe RFI
>> cause this problem.
>> 
>> Any idea ?
>> 
> -- 
> 73 de aki
> JA1NLX
> __
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> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to rmcg...@blomand.net 


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Re: [Elecraft] K3/100 suddenly shut down on FT8 TX

[Yoshida Akira]

Hi all

Thanks for suggestions. All look OK to me.

Power supply is Powerwerx ss-30DV. I do not use Powerpole connector
in the front panel, instead use terminal in the back panel.

I use this power supply for another TRX also and have never noticed the 
problem.


73

On 2020/06/09 9:00, Yoshida Akira wrote:

Hi all

I have never seen this for many years, however I recently noticed twice
when transmitting FT8 with 100W. No alarm and error message.
When I simply push POWER button in front panel then it turns ON again.

PA temp, DC voltage and DC current looks good. I do not believe RFI
cause this problem.

Any idea ?


--
73 de aki
JA1NLX
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Re: [Elecraft] Finding stuff on the 'net

[David Thompson via Elecraft]

Thank you for sharing that, Kevin. It was lovely, almost to the point of being 
poetic.

I just live over the hill from the writer, here in Carson City. The fishing 
analogy works.

I’m learning Morse Code. I need practice and have a bit of key-fright. 
Slow-speed CWT is Wednesday, so I’m hoping to make a few contacts with some 
CWOps folks. That is, if the dog will let me focus on the radio for a few 
minutes. ;)

One of my instructors was sending slow enough last Wednesday that I could copy 
him. I logged him as my second CW contact. I also sent him a QSL card.

73 de AG7TX

David Thompson, AG7TX
Jack of All Trades
Master of None
dbthomp...@me.com




> On Jun 8, 2020, at 17:47, kevinr  wrote:
> 
> I was looking for something else when I ran into this article.  I got close 
> to the end when I thought, "I recognize this guy."  A few lines later my 
> suspicions were confirmed :)  I'm sure he won't mind being re-posted here.
> 
>   73,  Kevin.  KD5ONS
> 
> 
> 
> 
> I find that CW has many practical and engaging aspects that I just don’t get 
> with computer-mediated modes like FT8. You’d think I’d be burned out on CW by 
> now, over 45 years since I was first licensed, but no, I’m still doin’ it :)
> 
> Yes, FT8 (etc.) is a no-brainer when, despite poor conditions, your goal is 
> to log as many contacts as possible with as many states or countries as 
> possible. It’s so streamlined and efficient that the whole process is readily 
> automated. (If you haven’t read enough opinions on that, see "The mother of 
> all FT8 threads” on QRZ.com , for example.)
> 
> But back to CW. Here’s why it works for me. YMMV.
> 
> CW feels personal and visceral, like driving a sports car rather than taking 
> a cab. As with a sports car, there are risks. You can get clobbered by larger 
> vehicles (QRM). Witness road range (“UP 2!”). Fall into a pothole (QSB). Be 
> forced to drive through rain or snow (QRN).
> 
> With CW, like other forms of human conversation, you can affect your own 
> style. Make mistakes. Joke about it.
> 
> CW is a skill that bonds operators together across generations and nations. A 
> language, more like pidgin than anything else, with abbreviations and 
> historical constructs and imperialist oddities. A curious club anyone can 
> join. (At age 60 and able to copy 50 WPM on a good day, I may qualify as a 
> Nerd Mason of some modest order, worthless in any other domain but of value 
> in a contest.)
> 
> With very simple equipment that anyone can build, such as a high-power 
> single-transistor oscillator, you can transmit a CW signal. I had very little 
> experience with electronics when I was 14 and built an oscillator that put 
> out maybe 100 mW. Just twisted the leads of all those parts together and 
> keyed the collector supply--a 9-volt battery. With this simple circuit on my 
> desk, coupled to one guy wire of our TV antenna mast, I worked a station 150 
> miles away and was instantly hooked on building things. And on QRP. I’m sure 
> the signal was key-clicky and had lots of harmonics. I’ve spent a lifetime 
> making such things work better, but this is where it started.
> 
> Going even further down the techno food chain, you can “send” CW by 
> whistling, flashing a lamp, tapping on someone’s leg under a table in civics 
> class, or pounding a wrench on the inverted hull of an upside-down U.S. war 
> vessel, as happened at Pearl Harbor. Last Saturday at an engineering club my 
> son belongs to, a 9-year-old demonstrated an Arduino Uno flashing HELLO WORLD 
> in Morse on an LED. The other kids were impressed, including my son, who 
> promptly wrote a version that sends three independent Morse streams on three 
> LEDs. A mini-pileup. His first program.
> 
> Finally, to do CW you don’t always need a computer, keyboard, mouse, monitor, 
> or software. Such things are invaluable in our daily lives, but for me, 
> shutting down everything but the radio is the high point of my day. The small 
> display glows like a mystic portal into my personal oyster, the RF spectrum. 
> Unless I crank up the power, there’s no fan noise. Tuning the knob slowly 
> from the bottom end of the band segment to the top is a bit like fishing my 
> favorite stream, Taylor Creek, which connects Fallen Leaf Lake to Lake Tahoe. 
> Drag the line across the green, sunlit pool. See what hits. Big trout? DX. 
> Small trout? Hey, it’s still a fish, and a QSO across town is still a QSO. 
> Admire it, then throw it back in.
> 
> (BTW: You now know why the Elecraft K3, K3S, KX2, and KX3 all have built-in 
> RTTY and PSK data modes that allow transmit via the keyer paddle and receive 
> on the rig’s display. We decided to make these data modes 
> conversational...like CW.)
> 
> Back to 40 meters
> 
> 73,
> 
> Wayne
> N6KR
> __
> Elecraft mailing list
> Home: 

Re: [Elecraft] CW rise time setting

[Wayne Burdick]

Drew,

We apply exactly the same shape to the sidetone, mute on/off, and mark/space 
transitions in FSK and PSK modes.

Wayne
N6KR


> On Jun 8, 2020, at 6:54 PM, Drew AF2Z  wrote:
> 
> A little off topic but is the sidetone also shaped or is it just a plain old 
> sine wave?
> 
> Actually, I wouldn't mind having the option to select a sawtooth or 
> squarewave for the sidetone. I'm not sure why but it seems to make sending on 
> a manual key better, prompting the reflexes to be a little crisper maybe...
> 
> 73,
> Drew
> AF2Z
> 
> 
> 
> On 06/08/20 14:38, Wayne Burdick wrote:
>> It’s closer to 4 ms.
>> Wayne
>> N6KR
>> 
>> elecraft.com
>>> On Jun 8, 2020, at 12:32 PM, E.H. Russell  wrote:
>>> 
>>> I suppose shaping of the curve corners removes harmonics introduced by the 
>>> abrupt transitions, allowing an accelerated ramp inbetween. But does this 
>>> really reduce the total rise time to 2.5ms? It seems that the softening 
>>> process must take some time. Wish I had a K3 here to scope against other 
>>> radios. Anything published out there?
>>> 
>>> 
>>> 
>>> Ed / w2rf
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> From: Alan Bloom 
>>> Sent: Monday, June 8, 2020 3:15 PM
>>> To: E.H. Russell 
>>> Cc: 'Elecraft Reflector' 
>>> Subject: Re: [Elecraft] CW rise time setting
>>> 
>>> 
>>> 
>>> In the "good old days" key shaping was done simply by adding a capacitor to 
>>> the key line or equivalent.  That results in an exponential rise and/or 
>>> fall time, which is not optimum, so the time constant had to be set pretty 
>>> slow to avoid key clicks.  Typically 5-10 ms.  10 ms results in "mushy" 
>>> keying, especially at high CW speeds.
>>> 
>>> 
>>> 
>>> Raised-cosine key shaping is close to optimum and is easy to implement with 
>>> a DSP.  It allows faster rise/fall times without key clicks.  I assume 
>>> Elecraft is using something like that.
>>> 
>>> 
>>> 
>>> Alan N1AL
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> On 2020-06-08 12:51, E.H. Russell wrote:
>>> 
>>> I'm used to CW rise times in th 4-7ms range. Is this 2.5ms arrived at by a
>>> different metric? Is the curve added by sigmoidal shaping somehow excluded
>>> from the measurement?
>>> 
>>> 
>>> 
>>> Ed / w2rf
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> -Original Message-
>>> From: elecraft-boun...@mailman.qth.net 
>>>   
>>> mailto:elecraft-boun...@mailman.qth.net> 
>>> > On
>>> Behalf Of Richard Stutsman
>>> Sent: Monday, June 8, 2020 1:31 PM
>>> To: David Gilbert mailto:ab7e...@gmail.com> >
>>> Cc: Elecraft Reflector >>  >
>>> Subject: Re: [Elecraft] CW rise time setting
>>> 
>>> 
>>> 
>>> Yes, I would regard a 2.5 msec rise time (using appropriate sigmoid
>>> 
>>> shaping) to probably be ideal, in which case I would have no desire to
>>> modify or shorten it. I'll bet it will sound even better than a Drake or a
>>> Ten-Tec!
>>> 
>>> 
>>> 
>>> I hereby withdraw my previous request/opinion.
>>> 
>>> 
>>> 
>>> Rick N6IET
>>> 
>>> 
>>> 
>>> On Mon, Jun 8, 2020 at 10:27 AM David Gilbert < >>  >
>>> ab7e...@gmail.com  > wrote:
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> You don't need to generate clicks to have a crisp CW tone.  Elecraft
>>> 
>>> 
>>> 
>>> 
>>> 
>>> uses a pretty much optimally shaped waveform (some version of a cosine
>>> 
>>> 
>>> 
>>> 
>>> 
>>> function) and if I remember correctly the rise time is only about 2.5
>>> 
>>> 
>>> 
>>> 
>>> 
>>> msec, although I could be wrong about that last part.  And while you
>>> 
>>> 
>>> 
>>> 
>>> 
>>> may be careful not to use short rise/fall times when the band is
>>> 
>>> 
>>> 
>>> 
>>> 
>>> active, in the past there have been folks on the contesting reflector
>>> 
>>> 
>>> 
>>> 
>>> 
>>> who openly admitted they purposely generate clicks by shortening the
>>> 
>>> 
>>> 
>>> 
>>> 
>>> rise/fall times to give themselves elbow room.  I will always
>>> 
>>> 
>>> 
>>> 
>>> 
>>> appreciate that Elecraft doesn't give those miscreants the means to
>>> 
>>> pollute the band.
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 73,
>>> 
>>> 
>>> 
>>> 
>>> 
>>> Dave   AB7E
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> On Mon, Jun 8, 2020 at 9:23 AM Richard Stutsman <
>>> 
>>>  > rast...@gmail.com 
>>>  > wrote:
>>> 
>>> 
>>> 
>>> 
>>> 
>>> I for one would like to have some control over the rise/fall times.
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> You want the cleanest (narrowest) of CW signals when operating on a
>>> 
>>> 
>>> 
>>> 
>>> 
>>> crowded band or in a contest - unless you're a rare DX station. Most
>>> 
>>> 
>>> 
>>> 
>>> 
>>> of my operations are 22wpm rag chews on very uncrowded bands. We're
>>> 
>>> 
>>> 
>>> 
>>> 
>>> often the only discernible signals on an entire CW band. And
>>> 
>>> 
>>> 
>>> 
>>> 
>>> conditions are often noisy with deep QSB. Why not allow those of us

[Elecraft] K3 on a boat

[Don Berger]

the efficacy of a counterpoise on boats has been the subject of much study
over the years during which many myths have been disproven. Among them is
the need for connection to a grounding plate which is good for dissipating
lightning but makes a poor counterpoise.

Another myth is that length of material underwater is of any importance. Or
that radials in the bilge is effective. Long story short - a so.id
connection to any thruhull is equally effective. I know because I’ve tried
all the options over many years.
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Re: [Elecraft] CW rise time setting

[Drew AF2Z]

A little off topic but is the sidetone also shaped or is it just a plain 
old sine wave?


Actually, I wouldn't mind having the option to select a sawtooth or 
squarewave for the sidetone. I'm not sure why but it seems to make 
sending on a manual key better, prompting the reflexes to be a little 
crisper maybe...


73,
Drew
AF2Z



On 06/08/20 14:38, Wayne Burdick wrote:

It’s closer to 4 ms.

Wayne
N6KR


elecraft.com


On Jun 8, 2020, at 12:32 PM, E.H. Russell  wrote:

I suppose shaping of the curve corners removes harmonics introduced by the 
abrupt transitions, allowing an accelerated ramp inbetween. But does this 
really reduce the total rise time to 2.5ms? It seems that the softening process 
must take some time. Wish I had a K3 here to scope against other radios. 
Anything published out there?



Ed / w2rf







From: Alan Bloom 
Sent: Monday, June 8, 2020 3:15 PM
To: E.H. Russell 
Cc: 'Elecraft Reflector' 
Subject: Re: [Elecraft] CW rise time setting



In the "good old days" key shaping was done simply by adding a capacitor to the key line 
or equivalent.  That results in an exponential rise and/or fall time, which is not optimum, so the 
time constant had to be set pretty slow to avoid key clicks.  Typically 5-10 ms.  10 ms results in 
"mushy" keying, especially at high CW speeds.



Raised-cosine key shaping is close to optimum and is easy to implement with a 
DSP.  It allows faster rise/fall times without key clicks.  I assume Elecraft 
is using something like that.



Alan N1AL











On 2020-06-08 12:51, E.H. Russell wrote:

I'm used to CW rise times in th 4-7ms range. Is this 2.5ms arrived at by a
different metric? Is the curve added by sigmoidal shaping somehow excluded
from the measurement?



Ed / w2rf







-Original Message-
From: elecraft-boun...@mailman.qth.net   
mailto:elecraft-boun...@mailman.qth.net> > On
Behalf Of Richard Stutsman
Sent: Monday, June 8, 2020 1:31 PM
To: David Gilbert mailto:ab7e...@gmail.com> >
Cc: Elecraft Reflector mailto:Elecraft@mailman.qth.net> 
>
Subject: Re: [Elecraft] CW rise time setting



Yes, I would regard a 2.5 msec rise time (using appropriate sigmoid

shaping) to probably be ideal, in which case I would have no desire to
modify or shorten it. I'll bet it will sound even better than a Drake or a
Ten-Tec!



I hereby withdraw my previous request/opinion.



Rick N6IET



On Mon, Jun 8, 2020 at 10:27 AM David Gilbert <  >
ab7e...@gmail.com  > wrote:






You don't need to generate clicks to have a crisp CW tone.  Elecraft





uses a pretty much optimally shaped waveform (some version of a cosine





function) and if I remember correctly the rise time is only about 2.5





msec, although I could be wrong about that last part.  And while you





may be careful not to use short rise/fall times when the band is





active, in the past there have been folks on the contesting reflector





who openly admitted they purposely generate clicks by shortening the





rise/fall times to give themselves elbow room.  I will always





appreciate that Elecraft doesn't give those miscreants the means to

pollute the band.





73,





Dave   AB7E






On Mon, Jun 8, 2020 at 9:23 AM Richard Stutsman <

 > rast...@gmail.com 
 > wrote:





I for one would like to have some control over the rise/fall times.









You want the cleanest (narrowest) of CW signals when operating on a





crowded band or in a contest - unless you're a rare DX station. Most





of my operations are 22wpm rag chews on very uncrowded bands. We're





often the only discernible signals on an entire CW band. And





conditions are often noisy with deep QSB. Why not allow those of us





operating in those circumstances to shorten the rise times a bit,





which makes it easier to copy in noisy conditions, when any close-in





clicks or thumps aren't going to bother anybody? Copying a 'soft'





weak CW signal is like trying to read a 'crisp' signal that's an





entire S-unit weaker, IMO.









My TS-590sg let's me do that, and I love it!









Will the K4 sound as good as a Drake T4C? (Just askin'.)









Rick N6IET









N4ZR wrote:









Will the K4 have options for setting CW rise and fall times...?





Hi Pete,





Probably not. We've always been very careful to ensure our rigs





have an exceptional clean, click-free CW signal. (Third-party





testing bears this





out.) Minimizing the bandwidth requires a very specific rise/fall





time





and





a hand-crafted sigmoidal shaping function in DSP.





Colonel Sanders closely guards his fried chick recipe, Mrs. Fields





won't reveal what's in her chocolate-chip cookies, and only





selected firmware monks--sworn to secrecy--are privy to Elecraft's





keying envelope 

[Elecraft] Motorboat

[Wilson Lamb]

Connect ground to engine/rudder.
Use tallest possible mast, with capacitive hat if shorter than 1/4 wavelength.
Tune antenna to resonance and match with a tuner.
WL


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Re: [Elecraft] K3/100 suddenly shut down on FT8 TX

[Yoshida Akira]

On 2020/06/09 10:27, Keith Onishi wrote:

LPA temperature may be over its upper limit during transmitting FT8.
If so, I would suggest to check and tighten the 3 screws securing 3 LPA 
transistors to the rear bottom cover.

73 de JH3SIF, Keith


2020/06/09 9:00、Yoshida Akira のメール:

Hi all

I have never seen this for many years, however I recently noticed twice
when transmitting FT8 with 100W. No alarm and error message.
When I simply push POWER button in front panel then it turns ON again.

PA temp, DC voltage and DC current looks good. I do not believe RFI
cause this problem.

Any idea ?

--
73 de aki
JA1NLX
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Re: [Elecraft] K3 working on motorboats - possible

[Barry]

Yes. This will work, but Peter is in fresh water which is not a good 
ground. That means the only ground he will have is the copper plate. The 
sintered metal plate, a Dynaplate, works nicely as the Coast Guard 
requirement of 100 square feet, but only in saltwater. I know as I've 
tried a few schemes in both brackish and saltwater.


73,
Barry
K3NDM


-- Original Message --
From: "John Langdon" 
To: "j...@audiosystemsgroup.com" ; 
"elecraft@mailman.qth.net" 

Sent: 6/8/2020 9:09:51 PM
Subject: Re: [Elecraft] K3 working on motorboats - possible


The shrimp boats often used a 108" stainless steel CB whip on a spring, and a 
large copper plate on the outside of the hull under water. They got out very well on 
11M. With modern rigs and built in tuners, you could probably do well on 10, 12, 15 
and 17 M too.

73 John N5CQ


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Jim Brown
Sent: Monday, June 8, 2020 7:18 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 working on motorboats - possible

On 6/8/2020 1:47 PM, Peter Kaletsch wrote:

 But how do I get a reasonably effective earth?

You don't need an "earth," you need a counterpoise.

VE0JS, who has sailed around the world four times on a 37-ft sail boat, loads 
the backstay against a sintered bronze plate in the water. I suggest that you 
do something similar for the vertical, and one or more wires strong along the 
boat as a counterpoise. She has a remote tuner at the base; the feedline in 
your boat will probably be short enough that you can use a tuner built into the 
radio.

A bunch of us in North America have worked her from the south Indian Ocean on 
40M. She's running an ICOM marine radio, SSB only, with no voice processing. 
Check out her qrz page.

73, Jim K9YC
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Re: [Elecraft] K3 working on motorboats - possible

[Barry]

Kim,
You're in better shape than Peter. You are operating in real salt 
water. You could easily put up a 23' marine HF antenna or use a Tarheel 
or almost anything else and you could use a Dynaplate ground, available 
at West Marine or Defenders. I used a backstay against a Dynaplate on 
Chesapeake Bay and in the Bahamas. Using sea water vice brackish water 
made a big difference.


The issue is you need an electrical 1/2 wave. The various whip type 
antenna are only 1/2 the needed antena. Thw orher half is represented in 
the ground. That is why have a good ground is so important or use a 
ground independent antenna like a dipole variant. See the note I just 
wrote to Peter that should be here on the reflector.


73,
Barry
K3NDM

-- Original Message --
From: "M. Bottles via Elecraft" 
To: "Peter Kaletsch" 
Cc: "elecraft@mailman.qth.net" 
Sent: 6/8/2020 5:47:40 PM
Subject: Re: [Elecraft] K3 working on motorboats - possible


I am also very interested in answers to this question, please include me with 
suggestions if you email direct outside of the reflector. I have a 15.25 meter 
motorboat on salt water )Puget Sound.) Thank you, Kim - K7IM

k...@icloud.com


 On Jun 8, 2020, at 1:47 PM, Peter Kaletsch  wrote:

 Hello fellows;

 You are my last hope as I cannot imagine that I am the only one in the world 
who wants to try that.

 For many months I have been trying in vain to get tips on how to operate a K3 
well on a small 13 meter motor yacht. I am talking about fresh water usage 
(Lake Garda in Italy), not salt water, and of a GFK built boat.

 A dipole is eliminated, it is not a sailing boat. I thought of using a Tarheel 
Antenna, but the manufacturer advised me against it.

 So normal, shortened mobile antennas, mounted on the device carrier, where 
also the antenna for marine radio is located, should point the way ...?

 But how do I get a reasonably effective earth? I read a lot of negative things 
about ground plates - fast growth, the hull has to be pierced.

 I have already considered laying radials from the antenna base below deck in 
the invisible area, but will this work...?

 I am very grateful for every tip and every help - also to 
pkalet...@kaletsch-gmbh.de

 Thanks in advance

 Peter - DL1MDZ


 
 Peter Kaletsch GmbH | Fürstenrieder Straße 275 | 81377 München | Tel: +49 (0) 
89 / 89 60 93 - 0 | Fax: +49 (0) 89 / 89 60 93 - 99 | i...@kaletsch-gmbh.de | 
Handelsregisternummer HRB 108093 | Amtsgericht Muenchen | Steuer-Nr: 
143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz der Gesellschaft: 
München |
 Hinweis / reference:
 Die Inhalte dieser Nachricht dürfen nur für die beabsichtigten Zwecke 
verwendet werden. The content of this Message may only be used for the intended 
purposes.
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Re: [Elecraft] K3/100 suddenly shut down on FT8 TX

[Keith Onishi]

LPA temperature may be over its upper limit during transmitting FT8.
If so, I would suggest to check and tighten the 3 screws securing 3 LPA 
transistors to the rear bottom cover.

73 de JH3SIF, Keith

> 2020/06/09 9:00、Yoshida Akira のメール:
> 
> Hi all
> 
> I have never seen this for many years, however I recently noticed twice
> when transmitting FT8 with 100W. No alarm and error message.
> When I simply push POWER button in front panel then it turns ON again.
> 
> PA temp, DC voltage and DC current looks good. I do not believe RFI
> cause this problem.
> 
> Any idea ?
> 
> -- 
> 73 de aki
> JA1NLX
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Re: [Elecraft] K3 working on motorboats - possible

[Kurt Pawlikowski]

Peter,

    In general, any vertical works lots better with more radials. As 
fresh water is a fairly poor conductor, the more the merrier! 
Unfortunately, because most boats are wooden/fiberglass, what you can 
add helps. I don't know if they have to be 1/4 wavelength (I've read yes 
and some say at least 0.20 wavelength). For HF, this would be some 
serious lengths for most boats! I expect you'd have to load them similar 
to the vertical element, but I haven't read anything regarding loading 
radials: It's just a guess. I suppose one could attempt to replicate, to 
some extent, a solid ground plane with foil or some other conductor 
(maybe chicken wire?). It would seem a lot of work (and probably is!). 
If you're insistent on a vertical, it's a narrow field of variability. 
Some of the portable antenna's can make loaded dipoles or verticals, 
which would operate fairly well without a ground plane. Another option 
might be a magnetic loop (which doesn't care much about "ground" per se. 
It is affected by near-by conductors, tunes very narrowly, and is big 
(compared to a mobile vertical). So, whatever you choose, it's all some 
sort of compromise.


    kurtt WB9FMC

On 6/8/2020 3:47 PM, Peter Kaletsch wrote:

Hello fellows;

You are my last hope as I cannot imagine that I am the only one in the world 
who wants to try that.

For many months I have been trying in vain to get tips on how to operate a K3 
well on a small 13 meter motor yacht. I am talking about fresh water usage 
(Lake Garda in Italy), not salt water, and of a GFK built boat.

A dipole is eliminated, it is not a sailing boat. I thought of using a Tarheel 
Antenna, but the manufacturer advised me against it.

So normal, shortened mobile antennas, mounted on the device carrier, where also 
the antenna for marine radio is located, should point the way ...?

But how do I get a reasonably effective earth? I read a lot of negative things 
about ground plates - fast growth, the hull has to be pierced.

I have already considered laying radials from the antenna base below deck in 
the invisible area, but will this work...?

I am very grateful for every tip and every help - also to 
pkalet...@kaletsch-gmbh.de

Thanks in advance

Peter - DL1MDZ



Peter Kaletsch GmbH | Fürstenrieder Straße 275 | 81377 München | Tel: +49 (0) 
89 / 89 60 93 - 0 | Fax: +49 (0) 89 / 89 60 93 - 99 | i...@kaletsch-gmbh.de | 
Handelsregisternummer HRB 108093 | Amtsgericht Muenchen | Steuer-Nr: 
143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz der Gesellschaft: 
München |
Hinweis / reference:
Die Inhalte dieser Nachricht dürfen nur für die beabsichtigten Zwecke verwendet 
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Re: [Elecraft] K3 working on motorboats - possible

[John Langdon]

The shrimp boats often used a 108" stainless steel CB whip on a spring, and a 
large copper plate on the outside of the hull under water. They got out very 
well on 11M. With modern rigs and built in tuners, you could probably do well 
on 10, 12, 15 and 17 M too.

73 John N5CQ


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Jim Brown
Sent: Monday, June 8, 2020 7:18 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 working on motorboats - possible

On 6/8/2020 1:47 PM, Peter Kaletsch wrote:
> But how do I get a reasonably effective earth?
You don't need an "earth," you need a counterpoise.

VE0JS, who has sailed around the world four times on a 37-ft sail boat, loads 
the backstay against a sintered bronze plate in the water. I suggest that you 
do something similar for the vertical, and one or more wires strong along the 
boat as a counterpoise. She has a remote tuner at the base; the feedline in 
your boat will probably be short enough that you can use a tuner built into the 
radio.

A bunch of us in North America have worked her from the south Indian Ocean on 
40M. She's running an ICOM marine radio, SSB only, with no voice processing. 
Check out her qrz page.

73, Jim K9YC
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Re: [Elecraft] Finding stuff on the 'net

[Wayne Burdick]

Guilty as charged :)

Wayne
N6KR


> On Jun 8, 2020, at 5:47 PM, kevinr  wrote:
> 
> I was looking for something else when I ran into this article.  I got close 
> to the end when I thought, "I recognize this guy."  A few lines later my 
> suspicions were confirmed :)  I'm sure he won't mind being re-posted here.
> 
>   73,  Kevin.  KD5ONS
> 
> 
> 
> 
> I find that CW has many practical and engaging aspects that I just don’t get 
> with computer-mediated modes like FT8. You’d think I’d be burned out on CW by 
> now, over 45 years since I was first licensed, but no, I’m still doin’ it :)
> 
> Yes, FT8 (etc.) is a no-brainer when, despite poor conditions, your goal is 
> to log as many contacts as possible with as many states or countries as 
> possible. It’s so streamlined and efficient that the whole process is readily 
> automated. (If you haven’t read enough opinions on that, see "The mother of 
> all FT8 threads” on QRZ.com , for example.)
> 
> But back to CW. Here’s why it works for me. YMMV.
> 
> CW feels personal and visceral, like driving a sports car rather than taking 
> a cab. As with a sports car, there are risks. You can get clobbered by larger 
> vehicles (QRM). Witness road range (“UP 2!”). Fall into a pothole (QSB). Be 
> forced to drive through rain or snow (QRN).
> 
> With CW, like other forms of human conversation, you can affect your own 
> style. Make mistakes. Joke about it.
> 
> CW is a skill that bonds operators together across generations and nations. A 
> language, more like pidgin than anything else, with abbreviations and 
> historical constructs and imperialist oddities. A curious club anyone can 
> join. (At age 60 and able to copy 50 WPM on a good day, I may qualify as a 
> Nerd Mason of some modest order, worthless in any other domain but of value 
> in a contest.)
> 
> With very simple equipment that anyone can build, such as a high-power 
> single-transistor oscillator, you can transmit a CW signal. I had very little 
> experience with electronics when I was 14 and built an oscillator that put 
> out maybe 100 mW. Just twisted the leads of all those parts together and 
> keyed the collector supply--a 9-volt battery. With this simple circuit on my 
> desk, coupled to one guy wire of our TV antenna mast, I worked a station 150 
> miles away and was instantly hooked on building things. And on QRP. I’m sure 
> the signal was key-clicky and had lots of harmonics. I’ve spent a lifetime 
> making such things work better, but this is where it started.
> 
> Going even further down the techno food chain, you can “send” CW by 
> whistling, flashing a lamp, tapping on someone’s leg under a table in civics 
> class, or pounding a wrench on the inverted hull of an upside-down U.S. war 
> vessel, as happened at Pearl Harbor. Last Saturday at an engineering club my 
> son belongs to, a 9-year-old demonstrated an Arduino Uno flashing HELLO WORLD 
> in Morse on an LED. The other kids were impressed, including my son, who 
> promptly wrote a version that sends three independent Morse streams on three 
> LEDs. A mini-pileup. His first program.
> 
> Finally, to do CW you don’t always need a computer, keyboard, mouse, monitor, 
> or software. Such things are invaluable in our daily lives, but for me, 
> shutting down everything but the radio is the high point of my day. The small 
> display glows like a mystic portal into my personal oyster, the RF spectrum. 
> Unless I crank up the power, there’s no fan noise. Tuning the knob slowly 
> from the bottom end of the band segment to the top is a bit like fishing my 
> favorite stream, Taylor Creek, which connects Fallen Leaf Lake to Lake Tahoe. 
> Drag the line across the green, sunlit pool. See what hits. Big trout? DX. 
> Small trout? Hey, it’s still a fish, and a QSO across town is still a QSO. 
> Admire it, then throw it back in.
> 
> (BTW: You now know why the Elecraft K3, K3S, KX2, and KX3 all have built-in 
> RTTY and PSK data modes that allow transmit via the keyer paddle and receive 
> on the rig’s display. We decided to make these data modes 
> conversational...like CW.)
> 
> Back to 40 meters
> 
> 73,
> 
> Wayne
> N6KR
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Re: [Elecraft] K3 working on motorboats - possible

[W2xj]

Sorry, I misread the original post and thought it was a KX33 and not a K33.

Sent from my iPad

> On Jun 8, 2020, at 7:14 PM, Peter Kaletsch  wrote:
> 
> Hi;
> 
> Thank you very much for the feedback and suggestions.
> 
> The suggested setup is surly good for testing, but I would prefer a permanent 
> installation more and I am very sure, my wife also does Or should I say, I am 
> sure, it's a must for here :-). And also the AX-1 limits the output to 25 
> watts...
> 
> Best regards
> 
> 73, Peter
> 
> -Ursprüngliche Nachricht-
> Von: W2xj [mailto:w...@w2xj.net]
> Gesendet: Dienstag, 9. Juni 2020 00:55
> An: Peter Kaletsch 
> Cc: elecraft@mailman.qth.net
> Betreff: Re: [Elecraft] K3 working on motorboats - possible
> 
> try and AX1 with a tripod mount  mounted to the boat and then one or two 
> radials over the hull and into the water. Another member expressed interest 
> in operating over salt water when additional ground is much less important.
> 
> Sent from my iPad
> 
>> On Jun 8, 2020, at 4:48 PM, Peter Kaletsch  
>> wrote:
>> 
>> Hello fellows;
>> 
>> You are my last hope as I cannot imagine that I am the only one in the world 
>> who wants to try that.
>> 
>> For many months I have been trying in vain to get tips on how to operate a 
>> K3 well on a small 13 meter motor yacht. I am talking about fresh water 
>> usage (Lake Garda in Italy), not salt water, and of a GFK built boat.
>> 
>> A dipole is eliminated, it is not a sailing boat. I thought of using a 
>> Tarheel Antenna, but the manufacturer advised me against it.
>> 
>> So normal, shortened mobile antennas, mounted on the device carrier, where 
>> also the antenna for marine radio is located, should point the way ...?
>> 
>> But how do I get a reasonably effective earth? I read a lot of negative 
>> things about ground plates - fast growth, the hull has to be pierced.
>> 
>> I have already considered laying radials from the antenna base below deck in 
>> the invisible area, but will this work...?
>> 
>> I am very grateful for every tip and every help - also to
>> pkalet...@kaletsch-gmbh.de
>> 
>> Thanks in advance
>> 
>> Peter - DL1MDZ
>> 
>> 
>> 
>> Peter Kaletsch GmbH | Fürstenrieder Straße 275 | 81377 München | Tel:
>> +49 (0) 89 / 89 60 93 - 0 | Fax: +49 (0) 89 / 89 60 93 - 99 | 
>> i...@kaletsch-gmbh.de | Handelsregisternummer HRB 108093 | Amtsgericht 
>> Muenchen | Steuer-Nr: 143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz 
>> der Gesellschaft: München | Hinweis / reference:
>> Die Inhalte dieser Nachricht dürfen nur für die beabsichtigten Zwecke 
>> verwendet werden. The content of this Message may only be used for the 
>> intended purposes.
>> __
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>> 
>> This list hosted by: http://www.qsl.net Please help support this email
>> list: http://www.qsl.net/donate.html Message delivered to
>> w...@w2xj.net
> 
> 
> Peter Kaletsch GmbH | Fürstenrieder Straße 275 | 81377 München | Tel: +49 (0) 
> 89 / 89 60 93 - 0 | Fax: +49 (0) 89 / 89 60 93 - 99 | i...@kaletsch-gmbh.de | 
> Handelsregisternummer HRB 108093 | Amtsgericht Muenchen | Steuer-Nr: 
> 143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz der Gesellschaft: 
> München |
> Hinweis / reference:
> Die Inhalte dieser Nachricht dürfen nur für die beabsichtigten Zwecke 
> verwendet werden. The content of this Message may only be used for the 
> intended purposes.

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[Elecraft] Finding stuff on the 'net

[kevinr]

I was looking for something else when I ran into this article.  I got 
close to the end when I thought, "I recognize this guy."  A few lines 
later my suspicions were confirmed :)  I'm sure he won't mind being 
re-posted here.


  73,  Kevin.  KD5ONS




I find that CW has many practical and engaging aspects that I just don’t 
get with computer-mediated modes like FT8. You’d think I’d be burned out 
on CW by now, over 45 years since I was first licensed, but no, I’m 
still doin’ it :)


Yes, FT8 (etc.) is a no-brainer when, despite poor conditions, your goal 
is to log as many contacts as possible with as many states or countries 
as possible. It’s so streamlined and efficient that the whole process is 
readily automated. (If you haven’t read enough opinions on that, see 
"The mother of all FT8 threads” on QRZ.com , for example.)


But back to CW. Here’s why it works for me. YMMV.

CW feels personal and visceral, like driving a sports car rather than 
taking a cab. As with a sports car, there are risks. You can get 
clobbered by larger vehicles (QRM). Witness road range (“UP 2!”). Fall 
into a pothole (QSB). Be forced to drive through rain or snow (QRN).


With CW, like other forms of human conversation, you can affect your own 
style. Make mistakes. Joke about it.


CW is a skill that bonds operators together across generations and 
nations. A language, more like pidgin than anything else, with 
abbreviations and historical constructs and imperialist oddities. A 
curious club anyone can join. (At age 60 and able to copy 50 WPM on a 
good day, I may qualify as a Nerd Mason of some modest order, worthless 
in any other domain but of value in a contest.)


With very simple equipment that anyone can build, such as a high-power 
single-transistor oscillator, you can transmit a CW signal. I had very 
little experience with electronics when I was 14 and built an oscillator 
that put out maybe 100 mW. Just twisted the leads of all those parts 
together and keyed the collector supply--a 9-volt battery. With this 
simple circuit on my desk, coupled to one guy wire of our TV antenna 
mast, I worked a station 150 miles away and was instantly hooked on 
building things. And on QRP. I’m sure the signal was key-clicky and had 
lots of harmonics. I’ve spent a lifetime making such things work better, 
but this is where it started.


Going even further down the techno food chain, you can “send” CW by 
whistling, flashing a lamp, tapping on someone’s leg under a table in 
civics class, or pounding a wrench on the inverted hull of an 
upside-down U.S. war vessel, as happened at Pearl Harbor. Last Saturday 
at an engineering club my son belongs to, a 9-year-old demonstrated an 
Arduino Uno flashing HELLO WORLD in Morse on an LED. The other kids were 
impressed, including my son, who promptly wrote a version that sends 
three independent Morse streams on three LEDs. A mini-pileup. His first 
program.


Finally, to do CW you don’t always need a computer, keyboard, mouse, 
monitor, or software. Such things are invaluable in our daily lives, but 
for me, shutting down everything but the radio is the high point of my 
day. The small display glows like a mystic portal into my personal 
oyster, the RF spectrum. Unless I crank up the power, there’s no fan 
noise. Tuning the knob slowly from the bottom end of the band segment to 
the top is a bit like fishing my favorite stream, Taylor Creek, which 
connects Fallen Leaf Lake to Lake Tahoe. Drag the line across the green, 
sunlit pool. See what hits. Big trout? DX. Small trout? Hey, it’s still 
a fish, and a QSO across town is still a QSO. Admire it, then throw it 
back in.


(BTW: You now know why the Elecraft K3, K3S, KX2, and KX3 all have 
built-in RTTY and PSK data modes that allow transmit via the keyer 
paddle and receive on the rig’s display. We decided to make these data 
modes conversational...like CW.)


Back to 40 meters

73,

Wayne
N6KR
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Re: [Elecraft] K3 working on motorboats - possible

[Barry]

Peter,
I have used HF radios marine mobile here on Chesapeake Bay near 
Annapolis. The water here is brackish and not real salt water. I had a 
sail boat and loaded the backstay against a ground in the water that 
represented more than the 100 square feed that the Coast  Guard 
requires. What I discovered is that non-saltwater ground are not great. 
I had a lot of RF all over the place. I finally put up an inverted V 
held up by my main halyard; this worked well and overcame the RF on 
everything issue.


In your case, I would suggest that you not try a Tarheel or any 
antenna that requires a good ground as fresh water is a terrible ground. 
The boaters that do use marine HF mostly use a 23 foot fiberglass 
antenna worked against ground and a remote antenna tuner, but they are 
really salty water. This won't work for you. Therefore, what I suggest 
is that you put up one of the good expandable, push up masts, say ~25 
feet and hang a 40 meter inverted V on it; it should just fit on a 13 
foot boat as long as the legs aren't straight. A 4:1 CURRENT balun will 
allow all band operations above 40 and the Elecraft tuner should work 
great on this system.  I suspect you have a flybridge on a boat that 
large, and if so, mount the pushup mast on the deck section just out 
side the bridge. The added height will buy you a small amount in 
lowering the angle of arrival for this antenna a bit; every little bit 
helps. Feed the system with coax like Belden 9913 or Times Wire LM400. 
The SWR will be high on most of the bands but should be in the Elecraft 
range, more importantly, is containing the losses associated with high 
SWR.


73,
Barry
K3NDM

-- Original Message --
From: "Peter Kaletsch" 
To: "elecraft@mailman.qth.net" 
Sent: 6/8/2020 4:47:08 PM
Subject: [Elecraft] K3 working on motorboats - possible


Hello fellows;

You are my last hope as I cannot imagine that I am the only one in the world 
who wants to try that.

For many months I have been trying in vain to get tips on how to operate a K3 
well on a small 13 meter motor yacht. I am talking about fresh water usage 
(Lake Garda in Italy), not salt water, and of a GFK built boat.

A dipole is eliminated, it is not a sailing boat. I thought of using a Tarheel 
Antenna, but the manufacturer advised me against it.

So normal, shortened mobile antennas, mounted on the device carrier, where also 
the antenna for marine radio is located, should point the way ...?

But how do I get a reasonably effective earth? I read a lot of negative things 
about ground plates - fast growth, the hull has to be pierced.

I have already considered laying radials from the antenna base below deck in 
the invisible area, but will this work...?

I am very grateful for every tip and every help - also to 
pkalet...@kaletsch-gmbh.de

Thanks in advance

Peter - DL1MDZ



Peter Kaletsch GmbH | Fürstenrieder Straße 275 | 81377 München | Tel: +49 (0) 
89 / 89 60 93 - 0 | Fax: +49 (0) 89 / 89 60 93 - 99 | i...@kaletsch-gmbh.de | 
Handelsregisternummer HRB 108093 | Amtsgericht Muenchen | Steuer-Nr: 
143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz der Gesellschaft: 
München |
Hinweis / reference:
Die Inhalte dieser Nachricht dürfen nur für die beabsichtigten Zwecke verwendet 
werden. The content of this Message may only be used for the intended purposes.
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--
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

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[Elecraft] OK ... I screwed up.. Here is the real Net List

[Paul Van Dyke]

We have various ones ... stretch and meet others.
   Propagation means it all changes..
   Put a copy up in your shack
   Paul - KB9AVO


   The Elecraft Nets
--
   20 Meter SSB Elecraft Net
   Sunday  14.3035 +/- kHz at 1800Z

   40 Meter SSB Elecraft Net
   Sunday  7.280 kHz at 18:45z

   20 Meter CW Elecraft Net
   Sunday 14.050.5 kHz at 2200z:

   40 Meter CW Elecraft Net
   Sunday 7.047.5 kHz at z:

   80 Meter SSB Elecraft Net
   Sunday Night  3.940+/- at 01:00z
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Re: [Elecraft] Two instances of WSJT on K3s with SubRX?

[Joe Subich, W4TV]

Giving this "problem" some additional thought ...

WSJTX can not select "SPLIT" to transmit on VFO B in order to
automatically work a station heard on the Sub RX.  However,
here is a starting point for the rest of the configuration ...

For the Main RX (VFO A):
   Set Rig to Elecraft K3/K3S
   Set Mode to Data/PKT (DATA_A)
   Set Split Operation to either None or Fake It
   (Fake it probably works best if you have a wide filter)
   Use an interface that allows RTS or DTR on a dedicated
serial port for PTT
   Audio (RX) USB Audio CODEC 
   Audio (TX) USB Audio CODEC 

For the Sub RX (VFO B)
   Set rig to *NONE*
   Set Mode to *NONE*
   Set Split Operation to *NONE*
   Use a *Separate serial port* for PTT (DTR or RTS)
   Audio (RX) USB Audio CODEC 
   Audio (TX) USB Audio CODEC 

Notes: Sub RX receive bandwidth will probably be limited
 to 200-2600 Hz (depending on the widest filter
 installed in the Sub Rx)
   Since the VFO B transmit will be "fixed", TX
 offsets will be limited to 300-2600 Hz.  Try
 to stay above 1,000 Hz.
   You will need to manually activate "Split" (TX on
 VFO B) to call a station copied on the second
 instance of WSJTX.
   *DISABLE* "Auto Seq" on *BOTH* instances.  You do
 not want one instance to "take off" on a new
 QSO while working someone else.

73,

   ... Joe, W4TV

On 2020-06-08 8:10 PM, Joe Subich, W4TV wrote:


Since WSJTX does not understand the concept of a second receiver there
is no way to provide CAT control for the Sub RX or transmit on VFO B
as if it were a separate rig.

However, you can start a second instance of WSJTX to receive on the
Sub RX - start WSJTX with the --rig command line argument (see the
WSJTX Users Manual sec. 16.5).  You will probably also want to
specify a special configuration for the Sub RX that sets the RX
Soundcard to "USB Audio CODEC"  so it is listening to the
correct receiver.  Specifying a start-up configuration is done with
the --config command line switch (WSJTX Users Guide
sec 10.1.3)

As the developers of WSJTX are fond of saying - "Study the On-Line
Users Guide!"

73,

    ... Joe, W4TV


On 2020-06-08 4:23 PM, Jim Miller wrote:

Has anyone run two instances of WSJT on a single K3s with the SubRX so as
to be able to monitor both 50.323 and 50.313?

Of course I'll only be able to transmit on the instance that has the Main
RX but it would be handy to be able to see both.

Thanks

Jim ab3cv



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Re: [Elecraft] Two instances of WSJT on K3s with SubRX?

[Steve Lawrence via Elecraft]

If you have a P3, load 50.313 and 50.323 into memory to be able to toggle 
between A/B. If you see activity on the P3 on the other frequency, toggle.

73 - Steve WB6RSE


On Jun 8, 2020, at 1:23 PM, Jim Miller  wrote:

Has anyone run two instances of WSJT on a single K3s with the SubRX so as
to be able to monitor both 50.323 and 50.313?

Of course I'll only be able to transmit on the instance that has the Main
RX but it would be handy to be able to see both.

Thanks

Jim ab3cv
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Re: [Elecraft] K3 working on motorboats - possible

[Jim Brown]

On 6/8/2020 1:47 PM, Peter Kaletsch wrote:

But how do I get a reasonably effective earth?

You don't need an "earth," you need a counterpoise.

VE0JS, who has sailed around the world four times on a 37-ft sail boat, 
loads the backstay against a sintered bronze plate in the water. I 
suggest that you do something similar for the vertical, and one or more 
wires strong along the boat as a counterpoise. She has a remote tuner at 
the base; the feedline in your boat will probably be short enough that 
you can use a tuner built into the radio.


A bunch of us in North America have worked her from the south Indian 
Ocean on 40M. She's running an ICOM marine radio, SSB only, with no 
voice processing. Check out her qrz page.


73, Jim K9YC
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Re: [Elecraft] Two instances of WSJT on K3s with SubRX?

[Joe Subich, W4TV]

Since WSJTX does not understand the concept of a second receiver there
is no way to provide CAT control for the Sub RX or transmit on VFO B
as if it were a separate rig.

However, you can start a second instance of WSJTX to receive on the
Sub RX - start WSJTX with the --rig command line argument (see the
WSJTX Users Manual sec. 16.5).  You will probably also want to
specify a special configuration for the Sub RX that sets the RX
Soundcard to "USB Audio CODEC"  so it is listening to the
correct receiver.  Specifying a start-up configuration is done with
the --config command line switch (WSJTX Users Guide
sec 10.1.3)

As the developers of WSJTX are fond of saying - "Study the On-Line
Users Guide!"

73,

   ... Joe, W4TV


On 2020-06-08 4:23 PM, Jim Miller wrote:

Has anyone run two instances of WSJT on a single K3s with the SubRX so as
to be able to monitor both 50.323 and 50.313?

Of course I'll only be able to transmit on the instance that has the Main
RX but it would be handy to be able to see both.

Thanks

Jim ab3cv


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[Elecraft] K3/100 suddenly shut down on FT8 TX

[Yoshida Akira]

Hi all

I have never seen this for many years, however I recently noticed twice
when transmitting FT8 with 100W. No alarm and error message.
When I simply push POWER button in front panel then it turns ON again.

PA temp, DC voltage and DC current looks good. I do not believe RFI
cause this problem.

Any idea ?

--
73 de aki
JA1NLX
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Re: [Elecraft] Help with KPA1500 P/S

[rocketnj]

Are you talking about removing the cable from the amp? It just pulls out. There 
is some tension on the contacts so it will require a little force. Just pull 
straight out.

If you are talking about the chassis mounted Power Poles, there are screws on 
the inside that hold a bracket and wedge which keep them secure to the chassis.

Dave wo2x


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Salvatore Ted K2QMF
Sent: Monday, June 8, 2020 4:02 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] Help with KPA1500 P/S

Hello All,
How do you remove the PowerPoll P/S connector from the back of the KPA1500??
Any help much appreciated!
I don't want to force them out!
Thanks,
Sal  K2QMF

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delivered to rocke...@gmail.com 

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Re: [Elecraft] Two instances of WSJT on K3s with SubRX?

[Christopher Hoover]

The sub rx audio does not get plumbed over USB, AFAIK, like it does for the
main rx..   (It would be sweet if it did.)So it would seem that you'd
have to digitize it outboard.  Also you'd have to make sure the second
instance doesn't send any CAT commands.

73 de AI6KG



On Mon, Jun 8, 2020 at 1:24 PM Jim Miller  wrote:

> Has anyone run two instances of WSJT on a single K3s with the SubRX so as
> to be able to monitor both 50.323 and 50.313?
>
> Of course I'll only be able to transmit on the instance that has the Main
> RX but it would be handy to be able to see both.
>
> Thanks
>
> Jim ab3cv
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[Elecraft] zero-beating a KX1

[Frederick Dwight]

If you do a google search on KX1 zero beat indicator or cw zero beat indicator 
you will see several circuits demonstrated.  Some like the one which uses the 
LM567 (non SMT) part and had 
a white LED seemed to be good, much less than 100 Hz BW and had the schematic, 
but some others seemed to be much too broad, perhaps hundreds of Hz wide. My 
circuit
needed quite a bit of audio drive, so rigged up a small 500-500 CT audio 
transformer and used the primary as a autotransformer to double the audio 
voltage
to the circuit which did not change the earphone volume but enabled the 
detector to operate without opening up the audio gain too much on any of my 
rigs.
  Good Luck   Rick  KL7CW

Sent from Mail for Windows 10

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Re: [Elecraft] tuner

[Peter Kaletsch]

Hi Bob;

Thanks a lot! An automatic tuner also was my first idea and I hope, I'll catch 
up here still some motorboat experience form usage of external tuners for this 
purpose.

73, Peter

-Ursprüngliche Nachricht-
Von: ROBT E WOODWARD JR [mailto:bobwoodw...@mac.com]
Gesendet: Dienstag, 9. Juni 2020 01:04
An: Peter Kaletsch 
Betreff: tuner

Hi Peter

Look into a SGC SG 237 tuner. The AX1 will not handle the power from the K3.

I have used the tuner on land with random length wires for driven and ground.

Good Luck

73  Bob, N6PGQ

Peter Kaletsch GmbH | Fürstenrieder Straße 275 | 81377 München | Tel: +49 (0) 
89 / 89 60 93 - 0 | Fax: +49 (0) 89 / 89 60 93 - 99 | i...@kaletsch-gmbh.de | 
Handelsregisternummer HRB 108093 | Amtsgericht Muenchen | Steuer-Nr: 
143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz der Gesellschaft: 
München |
Hinweis / reference:
Die Inhalte dieser Nachricht dürfen nur für die beabsichtigten Zwecke verwendet 
werden. The content of this Message may only be used for the intended purposes.
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[Elecraft] WG: K3 working on motorboats - possible

[Peter Kaletsch]

Hi;

Thank you very much for the feedback and suggestions.

The suggested setup is surly good for testing, but I would prefer a permanent 
installation more and I am very sure, my wife also does Or should I say, I am 
sure, it's a must for here :-). And also the AX-1 limits the output to 25 
watts...

Best regards

73, Peter

-Ursprüngliche Nachricht-
Von: W2xj [mailto:w...@w2xj.net]
Gesendet: Dienstag, 9. Juni 2020 00:55
An: Peter Kaletsch 
Cc: elecraft@mailman.qth.net
Betreff: Re: [Elecraft] K3 working on motorboats - possible

try and AX1 with a tripod mount  mounted to the boat and then one or two 
radials over the hull and into the water. Another member expressed interest in 
operating over salt water when additional ground is much less important.

Sent from my iPad

> On Jun 8, 2020, at 4:48 PM, Peter Kaletsch  wrote:
>
> Hello fellows;
>
> You are my last hope as I cannot imagine that I am the only one in the world 
> who wants to try that.
>
> For many months I have been trying in vain to get tips on how to operate a K3 
> well on a small 13 meter motor yacht. I am talking about fresh water usage 
> (Lake Garda in Italy), not salt water, and of a GFK built boat.
>
> A dipole is eliminated, it is not a sailing boat. I thought of using a 
> Tarheel Antenna, but the manufacturer advised me against it.
>
> So normal, shortened mobile antennas, mounted on the device carrier, where 
> also the antenna for marine radio is located, should point the way ...?
>
> But how do I get a reasonably effective earth? I read a lot of negative 
> things about ground plates - fast growth, the hull has to be pierced.
>
> I have already considered laying radials from the antenna base below deck in 
> the invisible area, but will this work...?
>
> I am very grateful for every tip and every help - also to
> pkalet...@kaletsch-gmbh.de
>
> Thanks in advance
>
> Peter - DL1MDZ
>
>
> 
> Peter Kaletsch GmbH | Fürstenrieder Straße 275 | 81377 München | Tel:
> +49 (0) 89 / 89 60 93 - 0 | Fax: +49 (0) 89 / 89 60 93 - 99 | 
> i...@kaletsch-gmbh.de | Handelsregisternummer HRB 108093 | Amtsgericht 
> Muenchen | Steuer-Nr: 143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz 
> der Gesellschaft: München | Hinweis / reference:
> Die Inhalte dieser Nachricht dürfen nur für die beabsichtigten Zwecke 
> verwendet werden. The content of this Message may only be used for the 
> intended purposes.
> __
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>
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> w...@w2xj.net


Peter Kaletsch GmbH | Fürstenrieder Straße 275 | 81377 München | Tel: +49 (0) 
89 / 89 60 93 - 0 | Fax: +49 (0) 89 / 89 60 93 - 99 | i...@kaletsch-gmbh.de | 
Handelsregisternummer HRB 108093 | Amtsgericht Muenchen | Steuer-Nr: 
143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz der Gesellschaft: 
München |
Hinweis / reference:
Die Inhalte dieser Nachricht dürfen nur für die beabsichtigten Zwecke verwendet 
werden. The content of this Message may only be used for the intended purposes.
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Re: [Elecraft] K3 working on motorboats - possible

[W2xj]

try and AX1 with a tripod mount  mounted to the boat and then one or two 
radials over the hull and into the water. Another member expressed interest in 
operating over salt water when additional ground is much less important.  

Sent from my iPad

> On Jun 8, 2020, at 4:48 PM, Peter Kaletsch  wrote:
> 
> Hello fellows;
> 
> You are my last hope as I cannot imagine that I am the only one in the world 
> who wants to try that.
> 
> For many months I have been trying in vain to get tips on how to operate a K3 
> well on a small 13 meter motor yacht. I am talking about fresh water usage 
> (Lake Garda in Italy), not salt water, and of a GFK built boat.
> 
> A dipole is eliminated, it is not a sailing boat. I thought of using a 
> Tarheel Antenna, but the manufacturer advised me against it.
> 
> So normal, shortened mobile antennas, mounted on the device carrier, where 
> also the antenna for marine radio is located, should point the way ...?
> 
> But how do I get a reasonably effective earth? I read a lot of negative 
> things about ground plates - fast growth, the hull has to be pierced.
> 
> I have already considered laying radials from the antenna base below deck in 
> the invisible area, but will this work...?
> 
> I am very grateful for every tip and every help - also to 
> pkalet...@kaletsch-gmbh.de
> 
> Thanks in advance
> 
> Peter - DL1MDZ
> 
> 
> 
> Peter Kaletsch GmbH | Fürstenrieder Straße 275 | 81377 München | Tel: +49 (0) 
> 89 / 89 60 93 - 0 | Fax: +49 (0) 89 / 89 60 93 - 99 | i...@kaletsch-gmbh.de | 
> Handelsregisternummer HRB 108093 | Amtsgericht Muenchen | Steuer-Nr: 
> 143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz der Gesellschaft: 
> München |
> Hinweis / reference:
> Die Inhalte dieser Nachricht dürfen nur für die beabsichtigten Zwecke 
> verwendet werden. The content of this Message may only be used for the 
> intended purposes.
> __
> Elecraft mailing list
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> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to w...@w2xj.net

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Re: [Elecraft] K3 working on motorboats - possible

[M. Bottles via Elecraft]

I am also very interested in answers to this question, please include me with 
suggestions if you email direct outside of the reflector. I have a 15.25 meter 
motorboat on salt water )Puget Sound.) Thank you, Kim - K7IM

k...@icloud.com

> On Jun 8, 2020, at 1:47 PM, Peter Kaletsch  wrote:
> 
> Hello fellows;
> 
> You are my last hope as I cannot imagine that I am the only one in the world 
> who wants to try that.
> 
> For many months I have been trying in vain to get tips on how to operate a K3 
> well on a small 13 meter motor yacht. I am talking about fresh water usage 
> (Lake Garda in Italy), not salt water, and of a GFK built boat.
> 
> A dipole is eliminated, it is not a sailing boat. I thought of using a 
> Tarheel Antenna, but the manufacturer advised me against it.
> 
> So normal, shortened mobile antennas, mounted on the device carrier, where 
> also the antenna for marine radio is located, should point the way ...?
> 
> But how do I get a reasonably effective earth? I read a lot of negative 
> things about ground plates - fast growth, the hull has to be pierced.
> 
> I have already considered laying radials from the antenna base below deck in 
> the invisible area, but will this work...?
> 
> I am very grateful for every tip and every help - also to 
> pkalet...@kaletsch-gmbh.de
> 
> Thanks in advance
> 
> Peter - DL1MDZ
> 
> 
> 
> Peter Kaletsch GmbH | Fürstenrieder Straße 275 | 81377 München | Tel: +49 (0) 
> 89 / 89 60 93 - 0 | Fax: +49 (0) 89 / 89 60 93 - 99 | i...@kaletsch-gmbh.de | 
> Handelsregisternummer HRB 108093 | Amtsgericht Muenchen | Steuer-Nr: 
> 143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz der Gesellschaft: 
> München |
> Hinweis / reference:
> Die Inhalte dieser Nachricht dürfen nur für die beabsichtigten Zwecke 
> verwendet werden. The content of this Message may only be used for the 
> intended purposes.
> __
> Elecraft mailing list
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[Elecraft] KXPA100 offered for sale

[richard gilley]

Hi, 
I am listing my KXPA100 with ATU # 2424, purchased September 2018 as kit. 
Includes fused power cable, KXUSB cable and manual.

The unit is in excellent condition, used in the shack only, photo upon request. 
 Asking $950.00 includes shipping, insurance, via USPS, CONUS.  Bank check 
preferred, personal check OK will ship when cleared.

Thank you for your interest,  please contact me at "richgilley...@gmail.com 
”.

R Gilley
AD1G
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[Elecraft] K3 working on motorboats - possible

[Peter Kaletsch]

Hello fellows;

You are my last hope as I cannot imagine that I am the only one in the world 
who wants to try that.

For many months I have been trying in vain to get tips on how to operate a K3 
well on a small 13 meter motor yacht. I am talking about fresh water usage 
(Lake Garda in Italy), not salt water, and of a GFK built boat.

A dipole is eliminated, it is not a sailing boat. I thought of using a Tarheel 
Antenna, but the manufacturer advised me against it.

So normal, shortened mobile antennas, mounted on the device carrier, where also 
the antenna for marine radio is located, should point the way ...?

But how do I get a reasonably effective earth? I read a lot of negative things 
about ground plates - fast growth, the hull has to be pierced.

I have already considered laying radials from the antenna base below deck in 
the invisible area, but will this work...?

I am very grateful for every tip and every help - also to 
pkalet...@kaletsch-gmbh.de

Thanks in advance

Peter - DL1MDZ



Peter Kaletsch GmbH | Fürstenrieder Straße 275 | 81377 München | Tel: +49 (0) 
89 / 89 60 93 - 0 | Fax: +49 (0) 89 / 89 60 93 - 99 | i...@kaletsch-gmbh.de | 
Handelsregisternummer HRB 108093 | Amtsgericht Muenchen | Steuer-Nr: 
143/170/40017 | Geschäftsführer: Peter Kaletsch | Sitz der Gesellschaft: 
München |
Hinweis / reference:
Die Inhalte dieser Nachricht dürfen nur für die beabsichtigten Zwecke verwendet 
werden. The content of this Message may only be used for the intended purposes.
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[Elecraft] Two instances of WSJT on K3s with SubRX?

[Jim Miller]

Has anyone run two instances of WSJT on a single K3s with the SubRX so as
to be able to monitor both 50.323 and 50.313?

Of course I'll only be able to transmit on the instance that has the Main
RX but it would be handy to be able to see both.

Thanks

Jim ab3cv
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[Elecraft] Help with KPA1500 P/S

[Salvatore Ted K2QMF]

Hello All,
How do you remove the PowerPoll P/S connector from the back of the KPA1500??
Any help much appreciated!
I don't want to force them out!
Thanks,
Sal  K2QMF

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Re: [Elecraft] Alternative AMP to KX3 since Elecraft has temporarily stopped making AMPS

[Paul Hvidston]

Agree 100%, Rich. I'm 99% CW, and most amplifiers fall short for CW
operation. After looking long and hard for a 100W companion for my KX3,
the KPXA100 is best thing since sliced bread! If CW is your mode and QSK
(or even semi break-in) is desirable, there is no other choice. If you
want seamless integration with your KX3 (or KX2), the KPXA100 is your
best choice.

I contacted Elecraft about leadtimes, and Madelyn Gomez (Sales) says its
about 7 to 10 business days. No complaints there, so Elecraft has my
order. Will report back when my KXPA100-AT-K/KXUSB/KXPACBL arrives.

72/73 de Paul/N6MGN

On 5/27/2020 5:51 PM, rich hurd WC3T wrote:
> And not to appear to be too much of a lickspittle, but IMHO the only thing
> to compare to a KXPA100 is... another KXPA100.
>
> LOL
>

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Re: [Elecraft] CW rise time setting

[Wayne Burdick]

It’s closer to 4 ms. 

Wayne
N6KR


elecraft.com

> On Jun 8, 2020, at 12:32 PM, E.H. Russell  wrote:
> 
> I suppose shaping of the curve corners removes harmonics introduced by the 
> abrupt transitions, allowing an accelerated ramp inbetween. But does this 
> really reduce the total rise time to 2.5ms? It seems that the softening 
> process must take some time. Wish I had a K3 here to scope against other 
> radios. Anything published out there?
> 
> 
> 
> Ed / w2rf
> 
> 
> 
> 
> 
> 
> 
> From: Alan Bloom  
> Sent: Monday, June 8, 2020 3:15 PM
> To: E.H. Russell 
> Cc: 'Elecraft Reflector' 
> Subject: Re: [Elecraft] CW rise time setting
> 
> 
> 
> In the "good old days" key shaping was done simply by adding a capacitor to 
> the key line or equivalent.  That results in an exponential rise and/or fall 
> time, which is not optimum, so the time constant had to be set pretty slow to 
> avoid key clicks.  Typically 5-10 ms.  10 ms results in "mushy" keying, 
> especially at high CW speeds.
> 
> 
> 
> Raised-cosine key shaping is close to optimum and is easy to implement with a 
> DSP.  It allows faster rise/fall times without key clicks.  I assume Elecraft 
> is using something like that.
> 
> 
> 
> Alan N1AL
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> On 2020-06-08 12:51, E.H. Russell wrote:
> 
> I'm used to CW rise times in th 4-7ms range. Is this 2.5ms arrived at by a
> different metric? Is the curve added by sigmoidal shaping somehow excluded
> from the measurement?
> 
> 
> 
> Ed / w2rf
> 
> 
> 
> 
> 
> 
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net 
>     > On
> Behalf Of Richard Stutsman
> Sent: Monday, June 8, 2020 1:31 PM
> To: David Gilbert mailto:ab7e...@gmail.com> >
> Cc: Elecraft Reflector   >
> Subject: Re: [Elecraft] CW rise time setting
> 
> 
> 
> Yes, I would regard a 2.5 msec rise time (using appropriate sigmoid
> 
> shaping) to probably be ideal, in which case I would have no desire to
> modify or shorten it. I'll bet it will sound even better than a Drake or a
> Ten-Tec!
> 
> 
> 
> I hereby withdraw my previous request/opinion.
> 
> 
> 
> Rick N6IET
> 
> 
> 
> On Mon, Jun 8, 2020 at 10:27 AM David Gilbert <   >
> ab7e...@gmail.com  > wrote:
> 
> 
> 
> 
> 
> 
> You don't need to generate clicks to have a crisp CW tone.  Elecraft
> 
> 
> 
> 
> 
> uses a pretty much optimally shaped waveform (some version of a cosine
> 
> 
> 
> 
> 
> function) and if I remember correctly the rise time is only about 2.5
> 
> 
> 
> 
> 
> msec, although I could be wrong about that last part.  And while you
> 
> 
> 
> 
> 
> may be careful not to use short rise/fall times when the band is
> 
> 
> 
> 
> 
> active, in the past there have been folks on the contesting reflector
> 
> 
> 
> 
> 
> who openly admitted they purposely generate clicks by shortening the
> 
> 
> 
> 
> 
> rise/fall times to give themselves elbow room.  I will always
> 
> 
> 
> 
> 
> appreciate that Elecraft doesn't give those miscreants the means to
> 
> pollute the band.
> 
> 
> 
> 
> 
> 73,
> 
> 
> 
> 
> 
> Dave   AB7E
> 
> 
> 
> 
> 
> 
> On Mon, Jun 8, 2020 at 9:23 AM Richard Stutsman <
> 
>  > rast...@gmail.com 
>  > wrote:
> 
> 
> 
> 
> 
> I for one would like to have some control over the rise/fall times.
> 
> 
> 
> 
> 
> 
> 
> 
> 
> You want the cleanest (narrowest) of CW signals when operating on a
> 
> 
> 
> 
> 
> crowded band or in a contest - unless you're a rare DX station. Most
> 
> 
> 
> 
> 
> of my operations are 22wpm rag chews on very uncrowded bands. We're
> 
> 
> 
> 
> 
> often the only discernible signals on an entire CW band. And
> 
> 
> 
> 
> 
> conditions are often noisy with deep QSB. Why not allow those of us
> 
> 
> 
> 
> 
> operating in those circumstances to shorten the rise times a bit,
> 
> 
> 
> 
> 
> which makes it easier to copy in noisy conditions, when any close-in
> 
> 
> 
> 
> 
> clicks or thumps aren't going to bother anybody? Copying a 'soft'
> 
> 
> 
> 
> 
> weak CW signal is like trying to read a 'crisp' signal that's an
> 
> 
> 
> 
> 
> entire S-unit weaker, IMO.
> 
> 
> 
> 
> 
> 
> 
> 
> 
> My TS-590sg let's me do that, and I love it!
> 
> 
> 
> 
> 
> 
> 
> 
> 
> Will the K4 sound as good as a Drake T4C? (Just askin'.)
> 
> 
> 
> 
> 
> 
> 
> 
> 
> Rick N6IET
> 
> 
> 
> 
> 
> 
> 
> 
> 
> N4ZR wrote:
> 
> 
> 
> 
> 
> 
> 
> 
> 
> Will the K4 have options for setting CW rise and fall times...?
> 
> 
> 
> 
> 
> Hi Pete,
> 
> 
> 
> 
> 
> Probably not. We've always been very careful to ensure our rigs
> 
> 
> 
> 
> 
> have an exceptional clean, click-free CW signal. (Third-party
> 
> 
> 
> 
> 
> testing bears this
> 
> 
> 
> 
> 
> out.) Minimizing the bandwidth requires a very specific rise/fall
> 
> 
> 
> 
> 
> time
> 

[Elecraft] 2nd Try --- When is the Elecraft Net??

[Paul Van Dyke]

We have various ones ... stretch and meet others.
   Propagation means it all changes..
   Put a copy up in your shack
   Paul - KB9AVO


   The Elecraft Nets
--
   20 Meter SSB Elecraft Net
   Sunday  14.3035 +/- kHz at 1800Z

   40 Meter SSB Elecraft Net
   Sunday  7.280 kHz at 18:45z

   20 Meter CW Elecraft Net
   Sunday 14.050.5 kHz at 2200z:

   40 Meter CW Elecraft Net
   Sunday 7.047.5 kHz at z:

   80 Meter SSB Elecraft Net
   Sunday Night  3.940+/- at 18:45z
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Re: [Elecraft] CW rise time setting

[E.H. Russell]

I suppose shaping of the curve corners removes harmonics introduced by the 
abrupt transitions, allowing an accelerated ramp inbetween. But does this 
really reduce the total rise time to 2.5ms? It seems that the softening process 
must take some time. Wish I had a K3 here to scope against other radios. 
Anything published out there?

 

Ed / w2rf

 

 

 

From: Alan Bloom  
Sent: Monday, June 8, 2020 3:15 PM
To: E.H. Russell 
Cc: 'Elecraft Reflector' 
Subject: Re: [Elecraft] CW rise time setting

 

In the "good old days" key shaping was done simply by adding a capacitor to the 
key line or equivalent.  That results in an exponential rise and/or fall time, 
which is not optimum, so the time constant had to be set pretty slow to avoid 
key clicks.  Typically 5-10 ms.  10 ms results in "mushy" keying, especially at 
high CW speeds.

 

Raised-cosine key shaping is close to optimum and is easy to implement with a 
DSP.  It allows faster rise/fall times without key clicks.  I assume Elecraft 
is using something like that.

 

Alan N1AL

 

 

 

 

 

On 2020-06-08 12:51, E.H. Russell wrote:

I'm used to CW rise times in th 4-7ms range. Is this 2.5ms arrived at by a
different metric? Is the curve added by sigmoidal shaping somehow excluded
from the measurement?

 

Ed / w2rf

 

 

 

-Original Message-
From: elecraft-boun...@mailman.qth.net 
  mailto:elecraft-boun...@mailman.qth.net> > On
Behalf Of Richard Stutsman
Sent: Monday, June 8, 2020 1:31 PM
To: David Gilbert mailto:ab7e...@gmail.com> >
Cc: Elecraft Reflector mailto:Elecraft@mailman.qth.net> >
Subject: Re: [Elecraft] CW rise time setting

 

Yes, I would regard a 2.5 msec rise time (using appropriate sigmoid

shaping) to probably be ideal, in which case I would have no desire to
modify or shorten it. I'll bet it will sound even better than a Drake or a
Ten-Tec!

 

I hereby withdraw my previous request/opinion.

 

Rick N6IET

 

On Mon, Jun 8, 2020 at 10:27 AM David Gilbert <  >
ab7e...@gmail.com  > wrote:

 




You don't need to generate clicks to have a crisp CW tone.  Elecraft





uses a pretty much optimally shaped waveform (some version of a cosine





function) and if I remember correctly the rise time is only about 2.5





msec, although I could be wrong about that last part.  And while you





may be careful not to use short rise/fall times when the band is





active, in the past there have been folks on the contesting reflector





who openly admitted they purposely generate clicks by shortening the





rise/fall times to give themselves elbow room.  I will always





appreciate that Elecraft doesn't give those miscreants the means to

pollute the band.





73,





Dave   AB7E






On Mon, Jun 8, 2020 at 9:23 AM Richard Stutsman <

 > rast...@gmail.com 
 > wrote:





I for one would like to have some control over the rise/fall times.









You want the cleanest (narrowest) of CW signals when operating on a





crowded band or in a contest - unless you're a rare DX station. Most





of my operations are 22wpm rag chews on very uncrowded bands. We're





often the only discernible signals on an entire CW band. And





conditions are often noisy with deep QSB. Why not allow those of us





operating in those circumstances to shorten the rise times a bit,





which makes it easier to copy in noisy conditions, when any close-in





clicks or thumps aren't going to bother anybody? Copying a 'soft'





weak CW signal is like trying to read a 'crisp' signal that's an





entire S-unit weaker, IMO.









My TS-590sg let's me do that, and I love it!









Will the K4 sound as good as a Drake T4C? (Just askin'.)









Rick N6IET









N4ZR wrote:









Will the K4 have options for setting CW rise and fall times...?





Hi Pete,





Probably not. We've always been very careful to ensure our rigs





have an exceptional clean, click-free CW signal. (Third-party





testing bears this





out.) Minimizing the bandwidth requires a very specific rise/fall





time





and





a hand-crafted sigmoidal shaping function in DSP.





Colonel Sanders closely guards his fried chick recipe, Mrs. Fields





won't reveal what's in her chocolate-chip cookies, and only





selected firmware monks--sworn to secrecy--are privy to Elecraft's





keying envelope coefficients :) 73, Wayne N6KR





__





Elecraft mailing list





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http://mailman.qth.net/mailman/listinfo/elecraft




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Re: [Elecraft] [OT] Birds and DX

[Michael K Bottles via Elecraft]

I use that on my boats to deter messy river Otters.
Very effective

Sent from my iPad

> On Jun 8, 2020, at 12:00, Lyn Norstad  wrote:
> 
> I saw this on Shark Tank.  They are EXTREMELY sharp!
> 
> 73
> Lyn, W0LEN
> 
> https://allsharktankproducts.com/shark-tank-products-home/critter-pricker-raccoon-deterrent/#:~:text=Critter%20Prickers%20are%20strips%20of,of%20roughly%20three%20square%20feet.
> 
> 
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net 
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of RICHARD Martin
> Sent: Sunday, June 07, 2020 5:02 PM
> To: Michael K Bottles
> Cc: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] [OT] Birds and DX
> 
> You can purchase light weight telescoping fiberglass poles (about 25') with
> a kite that looks like a bird of prey.  The kite bobs, swirls and dives.
> Quite an entertaining display.
> 
> They work quite well keeping the birds and squirrels away from our fruit
> trees.  They are also popular along Sunset Drive in Pacific Grove to deal
> with the seagulls.
> 
> 73s
> Dick KN6AA
> 
>> On Sun, Jun 7, 2020, 12:09 Michael K Bottles via Elecraft <
>> elecraft@mailman.qth.net> wrote:
>> 
>> Yup, that is a flashy sparkly thing like the ribbon I suggested. Birds
>> don’t seem to like that.
>> 
>> Sent from my iPad
>> 
 On Jun 7, 2020, at 11:54, Paul Evans W4/VP9KF  wrote:
>>> 
>>> This _always_ works, as proven in a marina on my boat (and those that
>>> adopted it!):
>>> 
>>> Take old CD. Drill a small hole near the edge. Dangle from object or
>>> anything nearby with thin string.
>>> 
>>> Works when every other possible bird scarer had failed. No birds. No
>> poop.
>>> 
>>> 73, Paul.
>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft@mailman.qth.net
>>> 
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to k...@icloud.com
>> __
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> 
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[Elecraft] zero-beating a KX1

[Frederick Dwight]

You will enjoy your KX1, as I have mine.  I made thousands of QSO’s.  If you 
can “zero-beat” within approximately 100 Hz this should be plenty close most of 
the time.  I am a musician so I just adjusted the tone a bit above high C which 
is an octave above middle C.  Actually a D is 587 Hz, which is very close.  In 
your case, I would see if the N0SS website is still active, which it was long 
after he became a SK.  If you can find the schematic, it should be an easy 
build.  I built a tone detector many years ago to drive my telegraph sounders 
many years ago.  I used a $2 eight pin DIP tone decoder chip still available 
from Digikey and others.  It was a LM567 and I set it up for a 80 Hz BW and 600 
Hz detect frequency.  It is also available for around $1 in the SOIC pkg.  I 
put in a LED which flashes right along with the CW when my RX is tuned close to 
600 Hz.  The data sheets give info on designing your circuit.  Adjust the level 
into the chip so it reads the CW, but not the noise, not at all a critical 
adjustment.  Another idea is to build a 600 Hz oscillator, or get a tuning 
fork, and just match the frequency, however not all folks can quickly match 
frequencies.  Possibly the best idea is to build a sharp 600 Hz audio filter, 
and switch it into the circuit when zero-beating and also it will be useful for 
operating in tough conditions.  A deluxe version on the tone detector could 
even have something like a 560 Hz, a 600 Hz, and a 640 Hz Hz decoder and use a 
different color LED for each frequency….really an overkill, but we all like 
flashing lights ! Good Luck   Rick  KL7CW

Sent from Mail for Windows 10

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Re: [Elecraft] CW rise time setting

[Alan Bloom]

In the "good old days" key shaping was done simply by adding a capacitor
to the key line or equivalent.  That results in an exponential rise
and/or fall time, which is not optimum, so the time constant had to be
set pretty slow to avoid key clicks.  Typically 5-10 ms.  10 ms results
in "mushy" keying, especially at high CW speeds. 

Raised-cosine key shaping is close to optimum and is easy to implement
with a DSP.  It allows faster rise/fall times without key clicks.  I
assume Elecraft is using something like that. 

Alan N1AL 

On 2020-06-08 12:51, E.H. Russell wrote:

> I'm used to CW rise times in th 4-7ms range. Is this 2.5ms arrived at by a
> different metric? Is the curve added by sigmoidal shaping somehow excluded
> from the measurement?
> 
> Ed / w2rf
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net  On
> Behalf Of Richard Stutsman
> Sent: Monday, June 8, 2020 1:31 PM
> To: David Gilbert 
> Cc: Elecraft Reflector 
> Subject: Re: [Elecraft] CW rise time setting
> 
> Yes, I would regard a 2.5 msec rise time (using appropriate sigmoid
> 
> shaping) to probably be ideal, in which case I would have no desire to
> modify or shorten it. I'll bet it will sound even better than a Drake or a
> Ten-Tec!
> 
> I hereby withdraw my previous request/opinion.
> 
> Rick N6IET
> 
> On Mon, Jun 8, 2020 at 10:27 AM David Gilbert < 
> ab7e...@gmail.com> wrote:
> 
>> You don't need to generate clicks to have a crisp CW tone.  Elecraft
> 
>> uses a pretty much optimally shaped waveform (some version of a cosine
> 
>> function) and if I remember correctly the rise time is only about 2.5
> 
>> msec, although I could be wrong about that last part.  And while you
> 
>> may be careful not to use short rise/fall times when the band is
> 
>> active, in the past there have been folks on the contesting reflector
> 
>> who openly admitted they purposely generate clicks by shortening the
> 
>> rise/fall times to give themselves elbow room.  I will always
> 
>> appreciate that Elecraft doesn't give those miscreants the means to
> pollute the band.
> 
>> 73,
> 
>> Dave   AB7E
> 
>> On Mon, Jun 8, 2020 at 9:23 AM Richard Stutsman <
>  rast...@gmail.com> wrote:
> 
> I for one would like to have some control over the rise/fall times.

> 

>> You want the cleanest (narrowest) of CW signals when operating on a

>> crowded band or in a contest - unless you're a rare DX station. Most

>> of my operations are 22wpm rag chews on very uncrowded bands. We're

>> often the only discernible signals on an entire CW band. And

>> conditions are often noisy with deep QSB. Why not allow those of us

>> operating in those circumstances to shorten the rise times a bit,

>> which makes it easier to copy in noisy conditions, when any close-in

>> clicks or thumps aren't going to bother anybody? Copying a 'soft'

>> weak CW signal is like trying to read a 'crisp' signal that's an

>> entire S-unit weaker, IMO.

> 

>> My TS-590sg let's me do that, and I love it!

> 

>> Will the K4 sound as good as a Drake T4C? (Just askin'.)

> 

>> Rick N6IET

> 

> N4ZR wrote:

> 

> Will the K4 have options for setting CW rise and fall times...?

> Hi Pete,

> Probably not. We've always been very careful to ensure our rigs

> have an exceptional clean, click-free CW signal. (Third-party

> testing bears this

> out.) Minimizing the bandwidth requires a very specific rise/fall

> time

>> and

> a hand-crafted sigmoidal shaping function in DSP.

> Colonel Sanders closely guards his fried chick recipe, Mrs. Fields

> won't reveal what's in her chocolate-chip cookies, and only

> selected firmware monks--sworn to secrecy--are privy to Elecraft's

> keying envelope coefficients :) 73, Wayne N6KR

>> __

>> Elecraft mailing list

>> Home:  
 http://mailman.qth.net/mailman/listinfo/elecraft

>> Help:  
 http://mailman.qth.net/mmfaq.htm

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> 

>> This list hosted by:   http://www.qsl.net Please help
 support this 

>> email list:  
 http://www.qsl.net/donate.html Message delivered to 

>>  ab7e...@gmail.com

> 

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Re: [Elecraft] [OT] Birds and DX

[Lyn Norstad]

I saw this on Shark Tank.  They are EXTREMELY sharp!

73
Lyn, W0LEN

https://allsharktankproducts.com/shark-tank-products-home/critter-pricker-raccoon-deterrent/#:~:text=Critter%20Prickers%20are%20strips%20of,of%20roughly%20three%20square%20feet.



-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of RICHARD Martin
Sent: Sunday, June 07, 2020 5:02 PM
To: Michael K Bottles
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] [OT] Birds and DX

You can purchase light weight telescoping fiberglass poles (about 25') with
a kite that looks like a bird of prey.  The kite bobs, swirls and dives.
Quite an entertaining display.

They work quite well keeping the birds and squirrels away from our fruit
trees.  They are also popular along Sunset Drive in Pacific Grove to deal
with the seagulls.

73s
Dick KN6AA

On Sun, Jun 7, 2020, 12:09 Michael K Bottles via Elecraft <
elecraft@mailman.qth.net> wrote:

> Yup, that is a flashy sparkly thing like the ribbon I suggested. Birds
> don’t seem to like that.
>
> Sent from my iPad
>
> > On Jun 7, 2020, at 11:54, Paul Evans W4/VP9KF  wrote:
> >
> > This _always_ works, as proven in a marina on my boat (and those that
> > adopted it!):
> >
> > Take old CD. Drill a small hole near the edge. Dangle from object or
> > anything nearby with thin string.
> >
> > Works when every other possible bird scarer had failed. No birds. No
> poop.
> >
> > 73, Paul.
> > __
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Elecraft@mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> > Message delivered to k...@icloud.com
> __
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Re: [Elecraft] CW rise time setting

[E.H. Russell]

I'm used to CW rise times in th 4-7ms range. Is this 2.5ms arrived at by a
different metric? Is the curve added by sigmoidal shaping somehow excluded
from the measurement?

 

Ed / w2rf

 

 

 

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Richard Stutsman
Sent: Monday, June 8, 2020 1:31 PM
To: David Gilbert 
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] CW rise time setting

 

Yes, I would regard a 2.5 msec rise time (using appropriate sigmoid

shaping) to probably be ideal, in which case I would have no desire to
modify or shorten it. I'll bet it will sound even better than a Drake or a
Ten-Tec!

 

I hereby withdraw my previous request/opinion.

 

Rick N6IET

 

On Mon, Jun 8, 2020 at 10:27 AM David Gilbert < 
ab7e...@gmail.com> wrote:

 

> You don't need to generate clicks to have a crisp CW tone.  Elecraft 

> uses a pretty much optimally shaped waveform (some version of a cosine 

> function) and if I remember correctly the rise time is only about 2.5 

> msec, although I could be wrong about that last part.  And while you 

> may be careful not to use short rise/fall times when the band is 

> active, in the past there have been folks on the contesting reflector 

> who openly admitted they purposely generate clicks by shortening the 

> rise/fall times to give themselves elbow room.  I will always 

> appreciate that Elecraft doesn't give those miscreants the means to
pollute the band.

> 

> 73,

> Dave   AB7E

> 

> On Mon, Jun 8, 2020 at 9:23 AM Richard Stutsman <
 rast...@gmail.com> wrote:

> 

>> I for one would like to have some control over the rise/fall times.

>> 

>> You want the cleanest (narrowest) of CW signals when operating on a 

>> crowded band or in a contest - unless you're a rare DX station. Most 

>> of my operations are 22wpm rag chews on very uncrowded bands. We're 

>> often the only discernible signals on an entire CW band. And 

>> conditions are often noisy with deep QSB. Why not allow those of us 

>> operating in those circumstances to shorten the rise times a bit, 

>> which makes it easier to copy in noisy conditions, when any close-in 

>> clicks or thumps aren't going to bother anybody? Copying a 'soft' 

>> weak CW signal is like trying to read a 'crisp' signal that's an 

>> entire S-unit weaker, IMO.

>> 

>> My TS-590sg let's me do that, and I love it!

>> 

>> Will the K4 sound as good as a Drake T4C? (Just askin'.)

>> 

>> Rick N6IET

>> 

>> > N4ZR wrote:

>> > >

>> > > Will the K4 have options for setting CW rise and fall times...?

>> > Hi Pete,

>> > Probably not. We've always been very careful to ensure our rigs 

>> > have an exceptional clean, click-free CW signal. (Third-party 

>> > testing bears this

>> > out.) Minimizing the bandwidth requires a very specific rise/fall 

>> > time

>> and

>> > a hand-crafted sigmoidal shaping function in DSP.

>> > Colonel Sanders closely guards his fried chick recipe, Mrs. Fields 

>> > won't reveal what's in her chocolate-chip cookies, and only 

>> > selected firmware monks--sworn to secrecy--are privy to Elecraft's 

>> > keying envelope coefficients :) 73, Wayne N6KR

>> __

>> Elecraft mailing list

>> Home:  
http://mailman.qth.net/mailman/listinfo/elecraft

>> Help:  
http://mailman.qth.net/mmfaq.htm

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>> 

>> This list hosted by:   http://www.qsl.net Please help
support this 

>> email list:  
http://www.qsl.net/donate.html Message delivered to 

>>   ab7e...@gmail.com

>> 

> 

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Re: [Elecraft] CW rise time setting

[Jim Brown]

On 6/8/2020 9:21 AM, Richard Stutsman wrote:

I for one would like to have some control over the rise/fall times.

You want the cleanest (narrowest) of CW signals when operating on a crowded
band or in a contest - unless you're a rare DX station. Most of my
operations are 22wpm rag chews on very uncrowded bands. We're often the
only discernible signals on an entire CW band. And conditions are often
noisy with deep QSB. Why not allow those of us operating in those
circumstances to shorten the rise times a bit, which makes it easier to
copy in noisy conditions,


Because that's not how it works. Keying in all Elecraft rigs since the 
K3 has been carefully shaped for optimum copy AND minimum bandwidth. 
What Elecraft does is FAR superior to those rigs with adjustable rise time.


> My TS-590sg let's me do that, and I love it!

You should ALWAYS run it at the longest rise time setting.

>Will the K4 sound as good as a Drake T4C? (Just askin'.)

Although I worked for Drake doing final test of their first TR3s, I 
can't say that I know what a T4C sounds like. Do you?


73, Jim K9YC
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Re: [Elecraft] CW rise time setting

[Richard Stutsman]

Yes, I would regard a 2.5 msec rise time (using appropriate sigmoid
shaping) to probably be ideal, in which case I would have no desire to
modify or shorten it. I'll bet it will sound even better than a Drake or a
Ten-Tec!

I hereby withdraw my previous request/opinion.

Rick N6IET

On Mon, Jun 8, 2020 at 10:27 AM David Gilbert  wrote:

> You don't need to generate clicks to have a crisp CW tone.  Elecraft uses
> a pretty much optimally shaped waveform (some version of a cosine function)
> and if I remember correctly the rise time is only about 2.5 msec, although
> I could be wrong about that last part.  And while you may be careful not to
> use short rise/fall times when the band is active, in the past there have
> been folks on the contesting reflector who openly admitted they purposely
> generate clicks by shortening the rise/fall times to give themselves elbow
> room.  I will always appreciate that Elecraft doesn't give those miscreants
> the means to pollute the band.
>
> 73,
> Dave   AB7E
>
> On Mon, Jun 8, 2020 at 9:23 AM Richard Stutsman  wrote:
>
>> I for one would like to have some control over the rise/fall times.
>>
>> You want the cleanest (narrowest) of CW signals when operating on a
>> crowded
>> band or in a contest - unless you're a rare DX station. Most of my
>> operations are 22wpm rag chews on very uncrowded bands. We're often the
>> only discernible signals on an entire CW band. And conditions are often
>> noisy with deep QSB. Why not allow those of us operating in those
>> circumstances to shorten the rise times a bit, which makes it easier to
>> copy in noisy conditions, when any close-in clicks or thumps aren't going
>> to bother anybody? Copying a 'soft' weak CW signal is like trying to read
>> a
>> 'crisp' signal that's an entire S-unit weaker, IMO.
>>
>> My TS-590sg let's me do that, and I love it!
>>
>> Will the K4 sound as good as a Drake T4C? (Just askin'.)
>>
>> Rick N6IET
>>
>> > N4ZR wrote:
>> > >
>> > > Will the K4 have options for setting CW rise and fall times...?
>> > Hi Pete,
>> > Probably not. We've always been very careful to ensure our rigs have an
>> > exceptional clean, click-free CW signal. (Third-party testing bears this
>> > out.) Minimizing the bandwidth requires a very specific rise/fall time
>> and
>> > a hand-crafted sigmoidal shaping function in DSP.
>> > Colonel Sanders closely guards his fried chick recipe, Mrs. Fields won't
>> > reveal what's in her chocolate-chip cookies, and only selected firmware
>> > monks--sworn to secrecy--are privy to Elecraft's keying envelope
>> > coefficients :)
>> > 73,
>> > Wayne
>> > N6KR
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
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Re: [Elecraft] CW rise time setting

[David Gilbert]

You don't need to generate clicks to have a crisp CW tone.  Elecraft uses a
pretty much optimally shaped waveform (some version of a cosine function)
and if I remember correctly the rise time is only about 2.5 msec, although
I could be wrong about that last part.  And while you may be careful not to
use short rise/fall times when the band is active, in the past there have
been folks on the contesting reflector who openly admitted they purposely
generate clicks by shortening the rise/fall times to give themselves elbow
room.  I will always appreciate that Elecraft doesn't give those miscreants
the means to pollute the band.

73,
Dave   AB7E

On Mon, Jun 8, 2020 at 9:23 AM Richard Stutsman  wrote:

> I for one would like to have some control over the rise/fall times.
>
> You want the cleanest (narrowest) of CW signals when operating on a crowded
> band or in a contest - unless you're a rare DX station. Most of my
> operations are 22wpm rag chews on very uncrowded bands. We're often the
> only discernible signals on an entire CW band. And conditions are often
> noisy with deep QSB. Why not allow those of us operating in those
> circumstances to shorten the rise times a bit, which makes it easier to
> copy in noisy conditions, when any close-in clicks or thumps aren't going
> to bother anybody? Copying a 'soft' weak CW signal is like trying to read a
> 'crisp' signal that's an entire S-unit weaker, IMO.
>
> My TS-590sg let's me do that, and I love it!
>
> Will the K4 sound as good as a Drake T4C? (Just askin'.)
>
> Rick N6IET
>
> > N4ZR wrote:
> > >
> > > Will the K4 have options for setting CW rise and fall times...?
> > Hi Pete,
> > Probably not. We've always been very careful to ensure our rigs have an
> > exceptional clean, click-free CW signal. (Third-party testing bears this
> > out.) Minimizing the bandwidth requires a very specific rise/fall time
> and
> > a hand-crafted sigmoidal shaping function in DSP.
> > Colonel Sanders closely guards his fried chick recipe, Mrs. Fields won't
> > reveal what's in her chocolate-chip cookies, and only selected firmware
> > monks--sworn to secrecy--are privy to Elecraft's keying envelope
> > coefficients :)
> > 73,
> > Wayne
> > N6KR
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Re: [Elecraft] CW rise time setting

[David Box]

Glad to hear that we can count on the K4 maintaining the excellent CW 
characteristics.  I frequently will look at signals I am receiving 
measuring the transmitted waveform based on what I see on the P3 and it 
never ceases to amaze me about how different brands can be identified 
based on the waveform shape and spectral width, not to mention the 
audible key clicks.


de Dave K5MWR

On 6/7/2020 20:45, Wayne Burdick wrote:

N4ZR wrote:

Will the K4 have options for setting CW rise and fall times...?

Hi Pete,

Probably not. We've always been very careful to ensure our rigs have an 
exceptional clean, click-free CW signal. (Third-party testing bears this out.) 
Minimizing the bandwidth requires a very specific rise/fall time and a 
hand-crafted sigmoidal shaping function in DSP.

Colonel Sanders closely guards his fried chick recipe, Mrs. Fields won't reveal 
what's in her chocolate-chip cookies, and only selected firmware monks--sworn 
to secrecy--are privy to Elecraft's keying envelope coefficients :)

73,
Wayne
N6KR




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[Elecraft] CW rise time setting

[Richard Stutsman]

I for one would like to have some control over the rise/fall times.

You want the cleanest (narrowest) of CW signals when operating on a crowded
band or in a contest - unless you're a rare DX station. Most of my
operations are 22wpm rag chews on very uncrowded bands. We're often the
only discernible signals on an entire CW band. And conditions are often
noisy with deep QSB. Why not allow those of us operating in those
circumstances to shorten the rise times a bit, which makes it easier to
copy in noisy conditions, when any close-in clicks or thumps aren't going
to bother anybody? Copying a 'soft' weak CW signal is like trying to read a
'crisp' signal that's an entire S-unit weaker, IMO.

My TS-590sg let's me do that, and I love it!

Will the K4 sound as good as a Drake T4C? (Just askin'.)

Rick N6IET

> N4ZR wrote:
> >
> > Will the K4 have options for setting CW rise and fall times...?
> Hi Pete,
> Probably not. We've always been very careful to ensure our rigs have an
> exceptional clean, click-free CW signal. (Third-party testing bears this
> out.) Minimizing the bandwidth requires a very specific rise/fall time and
> a hand-crafted sigmoidal shaping function in DSP.
> Colonel Sanders closely guards his fried chick recipe, Mrs. Fields won't
> reveal what's in her chocolate-chip cookies, and only selected firmware
> monks--sworn to secrecy--are privy to Elecraft's keying envelope
> coefficients :)
> 73,
> Wayne
> N6KR
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Re: [Elecraft] K3(s) main oscillator calibration

[Wes]

You might have, but you're not who I'm thinking of:-)

On 6/6/2020 7:45 PM, Dave Cole wrote:

Thanks for the info, I think the other ham that asked Wayne, was me... :)

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Re: [Elecraft] KXPA100: PA Key Delay

[Nr4c]

Have you considered the VOX delay?

Sent from my iPhone
...nr4c. bill


> On Jun 8, 2020, at 10:49 AM, Kurt Pawlikowski  wrote:
> 
> Hi!
> 
> I'm getting ready for Field Day. I use a circular polarized antenna and a 
> device to switch polarization between transmit and receive. When sending 
> code, the results in the relays changing with every dit and dah... I was 
> wondering if there is an adjustment to increase the "release" time for this 
> output so it would not switch back to the receive state immediately. I was 
> contemplating a small circuit to accomplish this, but thought there might be 
> a built-in solution. Any thoughts? Thanks!
> 
> kurtt WB9FMC
> 
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[Elecraft] [OT] Birds and DX

[Dave B via Elecraft]

Try a plastic Owl, Hawk, or other dummy predator mounted on the near the
antenna, but in full view..

It too, may detune things a bit if mounted on it, but at least it'll be
there all the time!...

73.

Dave G0WBX.

On 07/06/2020 18:29, elecraft-requ...@mailman.qth.net wrote:
> From: Andy Durbin 
> To: "elecraft@mailman.qth.net" 
> Subject: [Elecraft] [OT] Birds and DX
> Message-ID:
>   
> 
>   
> Content-Type: text/plain; charset="iso-8859-1"
>
> I use a home brew mag loop on 30 m band and work into Asia most mornings with 
> it.  The loop tunes to a near perfect match (1.00:1 SWR) but becomes 
> instantly detuned when a dove perches on top of it.  SWR jumps instantly to > 
> 3.0:1 and trips my High SWR monitor.The birds look stupid but they are 
> smart enough not to straddle the loop opening.   I imagine full loop voltage 
> between their legs would de-tune them a bit but they just perch one side or 
> the other.
>
> Damn dove nearly cost me a QSO with JD1 this morning and that was new DX for 
> 30 m.   I tail ended with FT8, he came back, I started to send my report, 
> High SWR trip, run to back door to chase the dove away, and got back before 
> JD1 had given up on me.
>
> So how to keep birds of a mag loop without lowing the Q?
>
> 73,
> Andy k3wyc

-- 
Created on and sent from a Unix like PC running and using free and open source 
software:

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[Elecraft] K3S dead after attempted firmware update - fixed

[Ray Spreadbury via Elecraft]

Spot on Ian, ... yes it did have the recent W10 update so that could have
been the problem!

Cheers & 73

Ray G3XLG

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[Elecraft] KXPA100: PA Key Delay

[Kurt Pawlikowski]

Hi!

    I'm getting ready for Field Day. I use a circular polarized antenna 
and a device to switch polarization between transmit and receive. When 
sending code, the results in the relays changing with every dit and 
dah... I was wondering if there is an adjustment to increase the 
"release" time for this output so it would not switch back to the 
receive state immediately. I was contemplating a small circuit to 
accomplish this, but thought there might be a built-in solution. Any 
thoughts? Thanks!


    kurtt WB9FMC

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Re: [Elecraft] CW rise time setting

[N4ZR]

Good!

73, Pete N4ZR
Check out the Reverse Beacon Network
at , now
spotting RTTY activity worldwide.
For spots, please use your favorite
"retail" DX cluster.

On 6/7/2020 9:45 PM, Wayne Burdick wrote:

N4ZR wrote:

Will the K4 have options for setting CW rise and fall times...?

Hi Pete,

Probably not. We've always been very careful to ensure our rigs have an 
exceptional clean, click-free CW signal. (Third-party testing bears this out.) 
Minimizing the bandwidth requires a very specific rise/fall time and a 
hand-crafted sigmoidal shaping function in DSP.

Colonel Sanders closely guards his fried chick recipe, Mrs. Fields won't reveal 
what's in her chocolate-chip cookies, and only selected firmware monks--sworn 
to secrecy--are privy to Elecraft's keying envelope coefficients :)

73,
Wayne
N6KR





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[Elecraft] "When is the Elecraft Net?" .. Which one??

[Paul Van Dyke]

We have various ones ... stretch and meet others.
   Propagation means it all changes..
   Put a copy up in your shack
   Paul - KB9AVO


   The Elecraft Nets
--
   20 Meter SSB Elecraft Net
   Sunday  14.3035 +/- kHz at 1800Z

   40 Meter SSB Elecraft Net
   Sunday  7.280 kHz at 18:45z

   20 Meter CW Elecraft Net
   Sunday 14.050.5 kHz at 2200z:

   40 Meter CW Elecraft Net
   Sunday 7.047.5 kHz at z:

   80 Meter SSB Elecraft Net
   Sunday Night  3.940+/- at 18:45z
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Re: [Elecraft] KX3 Utilities Download

[Tommy Judson via Elecraft]

Good Morning, Newbie Here,

Wanting to download KX3 Utilities 
https://ftp.elecraft.com/KX3/Utilities/KX3UtilityMAC64BIT_1_19_9_6N.zip 
 but 
the download will not finish before stopping.

Trying to download into a 2017 MacBook Pro running MacOS Mojave Ver 10.14.6 
with 435 gb free storage and 8 mb ram.

The files ffwnotes and FTDIUSBSerialDriver_v2_4_2.dmg downloaded ok.

Should the KX3 be connected when selecting the utilities file noted above to be 
download?  Comments will be appreciated.

Thank you, Tommy
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Re: [Elecraft] KX3 For Sale

[n4kd]

The KX3 is sold. Thanks for your interest.

- 73,
Dave N4KD

> On Jun 7, 2020, at 16:06, David Kuechenmeister  wrote:
> 
> I've decided to part with my Kx3, in favor of the Kx1 for portable 
> operations. Before I put this up on QRZ, I thought I'd offer it for sale here.
> 
> It works very well. It's just that I usually find myself on 30 or 40 meter CW 
> and it's far to capable a rig to just use 10% of the features. Besides, I 
> want a new antenna and this will get me there. Yes, it's an expensive antenna!
> 
> Elecraft KX3 with all the built in options,
> - KXFL3 Roofing Filter
> - KXAT3 Antenna Tuner
> - KXBC3 NiMH Charger/RT Clock
> - KX3-2M Transverter
> 
> And these accessories,
> - MH3 Hand Mic
> - KXPD3 Paddle
> - KX3-PCKT Cable Kit
> 
> Plus the KE7X book, "The Elecraft KX3-Portable", as well as printed owner's 
> and assembly manuals.
> 
> Excellent condition.
> Price is $1400.00, includes ground shipping within CONUS
> Pictures available on request.
> 
> Payment by PayPal or USPS money order.
> 
> Thanks for your interest,
> 
> vy 73,
> 
> Dave, N4KD
> 
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Re: [Elecraft] 1st 80 Meter Elecraft Net

[Paul Van Dyke]

Good morning
   I knew there was a great net on that frequency, so I made sure it was at
0100 Zulu to make sure I gave it a wide berth.
   I did my time in the trenches, and wanted to make sure that we didn't
disturb a critical net.
  Thank you all for your fine work.

Paul - KB9AVO  80M Net Control
Ex-local ARES/RACES Director

On Mon, Jun 8, 2020, 1:47 AM JP Douglas  wrote:

> Don't know what time the net was held but please note there is a net
> seven days a week at 21:00 UTC on that frequency here in Maine; Seagull
> net M-Sat and ME Emergency Management on Sun.
>
> Thanks and 73
>
> Jose Douglas KB1TCD - ARES Coordinator Lincoln County ME - Net Control
> ME Emergency Mgmt Net
>
>
>
> On 6/7/2020 10:03 PM, Paul Van Dyke wrote:
> > KB9AVO: Elecraft 3.940 Net
> >   Date: 6/7/2020  Frequency: 3.94000
> >   Total Number Stations = 10
> >
> > K8NU   Carl  OH
> > WB9JNZ   Eric  IL
> > WM6P   Steve  GA
> > N9YH   CHRIS  IL
> > AB4IQ   ED  KY
> > W1GO   Joseph  NY
> > NG9NG   SAM  WI
> > KB8RXG   LEWIS  MI
> > WY3T   TIM  FL
> > KC8HMJ   RICH  MI
> >
> > I want to thank all those that
> > came up on 80m to help kick off the
> > 1st Elecraft net on that frequency.
> >
> >See you next week
> >   Paul - KB9AVO - Net Control
> >
> > 
> >Post to your radio shack
> >
> > 20 Meter Elecraft Net
> > Sunday 18:00z   14.3035 +/-
> >
> > 40 Meter Elecraft Net
> > Sunday 18:45z   7.280
> >
> > 80 Meter Elecraft Net
> > Sunday Night 01:00z
> >3.940 +/-
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Re: [Elecraft] Peaks, parks, and prayers: CW & SSB islands in a digital sea

[JP Douglas]

You can get a brand new Dell Win 10 solid drive laptop for $150 that also lets 
you use winlink, not much memory but if you are only using it for ham 
applications it works fine, that’s what I use as a dedicated ham laptop.
73 de Jose Douglas KB1TCD

Sent from my iPad

> On Jun 7, 2020, at 11:28 PM, Gwen Patton  wrote:
> 
> I use an older Chromebook, Dave. I removed Chrome OS and replaced it with
> GalliumOS, a Linux distro for Chromebooks. You can get an older model
> Chromebook for really cheap these days, and that gives you a display,
> battery, keyboard, trackpad, processor, and multiple digital mode apps, all
> nicely self-contained. And you can use it for other things, too. The only
> thing you'll have to add is a soundcard dongle, because the incredibly
> stupid audio system in most Chromebooks is too braindead to work on digital
> ham apps. Even a really fancy one will cost you only around $30, and there
> are far cheaper ones that will do. That's the dongle, not the Chromebook. I
> paid about $120 for this one about 5 years ago. I replaced the Chromebook
> with a better, faster one with more RAM, a microSD slot that doesn't stick
> half an inch out of the side of the machine, and USB-C.
> 
> I've got WSJT-X and JS8Call on it already, some logging programs, and
> things like Echolink. The MDS Phaser I use it with is set up for 40m FT8
> and JS8, but I can switch the JS8 to any frequency I want and run other
> modes if I feel like it. Perhaps some Slow-Scan images, who knows?
> 
> I've seen some very fancy Raspberry Pi builds for it, though, if you want
> to go that route. You'd have to add a display, keyboard, mouse, and power.
> OR you can set it up headless and run it with a tablet or even your phone
> over a remote access program like VNC. But that adds even more expense
> unless you already have the tablet or phone. I'd still recommend a wireless
> keyboard, though. Typing on a phone or tablet can be a pain, and there's
> some really nice Bluetooth keyboards out there now, even folding ones you
> can stow really easily.
> 
> I really like the Phaser. It's more challenging on FT8 than a full QRO
> station, of course, and it's VERY packable. It makes a fantastic field rig
> for working from parks, or probably for summit operation, though I don't do
> that. There's few summits you can take a wheelchair to. hi hi
> 
> -=-=-=-=-=-=-=-=-
> 73,
> Gwen, NG3P
> 
> 
>> On Sun, Jun 7, 2020 at 10:33 PM David Gilbert  wrote:
>> 
>> Thanks to Ray and Gwen for the tip, and that indeed looks like a really
>> nice low cost way to go.  But I already have a KX2 and I would still need
>> to bring along a notebook or small laptop computer.  I could certainly
>> homebrew a combined unit consisting of the MDS Phasor, a Raspberry Pi, and
>> a 12 volt display ... total cost would probably be less than $200.  I just
>> think that a self-contained unit would be inherently smaller, and probably
>> a good seller if Elecraft ever was inclined to offer one, especially if it
>> provided multiple bands.
>> 
>> 73,
>> Dave   AB7E
>> 
>> 
>>> On Sun, Jun 7, 2020 at 6:50 PM Wayne Burdick  wrote:
>>> 
>>> My pleasure, Paul. Feel free to repost elsewhere.
>>> 
>>> And keep on truckin' :)
>>> 
>>> 73,
>>> Wayne
>>> N6KR
>>> 
>>> 
 On Jun 7, 2020, at 3:09 PM, Paul Gacek  wrote:
 
 Wayne
 
 Thanks for promoting wilderness radio including SOTA and I hope you
>>> don’t mind but I copied your entire message into a post on the global
>> SOTA
>>> Reflector (watering  hole).
 
 
>>> 
>> https://reflector.sota.org.uk/t/wayne-burdick-elecraft-promoting-sota-cw-and-ssb/22983
 
 You captured the essence and feeling of mountain top radio. I love it
>>> and never cease to get a kick out of what you describe around the moment
>> of
>>> the first contact (which includes a mountain of anticipation as to
>> whether
>>> there will be a first contact).
 
 Of my almost 250 mountain top activations and 40 or 50 NPOTA
>>> activations, I had either my KX3 or KX2 and neither have ever let me
>> down.
>>> My antennas have failed, my coax has failed and my ability to spot (I’m
>> SSB
>>> so not RBN for me) has in a hollowing gale atop a cold mountain had be
>>> retreat and fail but never the radio.
 
 Thanks Wayne (and your team) for all you have done for the /P brigade.
 
 Paul
 W6PNG/M0SNA
 www.nomadic.blog
 
 
> On Jun 7, 2020, at 2:35 PM, David Gilbert  wrote:
> 
> I suggested this about a year ago and got mostly dismissive replies
>> from
> the group, but I still think that a small, dedicated FT8 rig (and
>>> similar
> modes) would be an attractive offering.  Something the size of a KX2
>> or
> maybe just a little larger, with a modest display and separate
> processors/memory for the rig and the digital modes.  It's entirely
> possible to run FT8 from a Raspberry Pi and an inexpensive display,
>> but
>>> an
> all-in-one rig would be so much 

Re: [Elecraft] 1st 80 Meter Elecraft Net

[JP Douglas]

Looks like some messages randomly go to junk, seems I’m getting three quarters 
of the messages...
73 de Jose Douglas KB1TCD

Sent from my iPad

> On Jun 8, 2020, at 1:55 AM, Graydon Jensen (N7RXL)  wrote:
> 
> You quoted the time... :-)
> 
> Looks like 5 hours apart, at 01:00 UTC
> 
> On Sun, Jun 7, 2020 at 23:48, JP Douglas
>  wrote:
> Don't know what time the net was held
> 
> 
> On 6/7/2020 10:03 PM, Paul Van Dyke wrote:
> > KB9AVO: Elecraft 3.940 Net
> >  Date: 6/7/2020  Frequency: 
> 
> >
> > 
> >Post to your radio shack
> >
> >20 Meter Elecraft Net
> >Sunday 18:00z  14.3035 +/-
> >
> >40 Meter Elecraft Net
> >Sunday 18:45z  7.280
> >
> >80 Meter Elecraft Net
> >Sunday Night 01:00z
> >3.940 +/-
> > __
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[Elecraft] KXBT2 fault

[Grant La Delle]

Hi all, my Tenergy KXBT2 battery is about 3 years old and I have been charging 
it every few months with the recommended Tenergy charger. The green light on 
the charger illuminates soon each time.

However, testing the battery now with a 12v 21 watt car globe, it is only 
lasting about 20 minutes, so it looks like maybe 1 or 2 cells are dead? I have 
deep cycled the battery several times, and continuously charged for four days, 
to no avail.

Has anyone attempted a repack with new cells using the old pcb please?

Be well, Grant. vk2gel.

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