Re: [Elecraft] mailman.qth

[Peter Eijlander (PA0PJE)]

Groups.io works exactly like a reflector like mailman to me.
Like said time and again: Use a proper client like the free Thunderbird 
mailprogram. It is there for all three major operating systems.


Do not use a web interface and stick to plain text for reduced message 
size and DO NOT USE A SMARTPHONE unless you know what that enter key is 
for. Proper formatting makes a mail a lot more readable.


If you use a digest and a mail cient PLEASE do NOT use the reply button 
but copy/paste the subject + text you want to reflect on! Of course, if 
you are the 100th in line, cut short the answer.


@Mailman leave it the way it is, Please!


are replying to so it arrives with no context.
Is due to HTML ony answers. That Should Not Be Done. Study The Matter So 
You Understand What The Differences Are.



73,
Peter



Op 01-05-2020 om 23:53 schreef Gary K9GS:

are replying to so it arrives with no context.Groups.io should default to 
quoting messages but they refuse to do so.

__
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 arch...@mail-archive.com 

Re: [Elecraft] Upper limits of KPA500?

[Rick Bates, NK7I]

I didn't add the obvious, FT8 in that manner is a 50% duty cycle but 
with enough time to 'catch the breath'.


I remember back when it first came out, Wayne suggested to 'run it with 
all the LEDs lit' or something along that line but... it's capable of 
MUCH more than 500 watts and wisely better limited by firmware upgrades 
(in the early days I watched it put out almost 700, at which point I was 
far more cautious).  It's nice to know there is a certain amount of 
'overhead'.


Rick NK7I


On 5/3/2020 8:23 PM, Dave Cole wrote:

Hi Rick,
That is how mine behaves as well, almost exactly like that... However, 
I will be running SSTV, and that is hard on the amp...  I need to do a 
bit more testing prior to that.


As someone else said upthread, half power is really tough on the amp...

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 5/3/20 7:52 PM, Rick Bates, NK7I wrote:

I spent 15 minutes active on 20M FT8 this afternoon (some lurking).

At 530 watts output (on the display and utility) into a 1.13:1 
antenna load (SteppIR) for a ten minute calling period (Mongolia then 
Oman), the temp rose to 66C; a few moments of elevated fan quickly 
brought that down to the low 60's between transmissions.


Ambient room temp 77F.  (Both calls succeeded.)

Rick NK7I
North Idaho

On 5/3/2020 7:42 PM, Andy Durbin wrote:
"It is interesting to hear how others experience their KPA500s over 
various conditions."


I have over a years's worth of KPA500 data recorded but it takes 
some effort to run it through the Excel templates to make pretty plots.


My KPA500 temperatures are strongly influenced by ambient 
temperature.  Shack temperature is often over 30 deg C in the summer 
months and it's not at all unusual for my fan to run at level 3 in 
FT8 QSO.  I think I have only reached fan speed 5 twice and that was 
while running temperature tests not while operating.   I terminated 
those tests at fan speed 5 and didn't wish to push it any higher.


So many people seem to think reducing the output power will keep the 
temperature down.  It does not.   Half power is about the worst heat 
dissipation condition for the KPA500.


73,
Andy, k3wyc
__
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 rick.n...@gmail.com

__
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 d...@nk7z.net

__
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 rick.n...@gmail.com 

__
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 arch...@mail-archive.com 

[Elecraft] Elecraft CW Net

[kevinr]

Good Evening,

   Twenty meters was noisy but from what I can tell most of it was from 
the storm right over me.  Part of the roar I was hearing was the rain 
falling on the roof but a lot of it was static.  When the rain slowed so 
did the static noise.  QSB was deep.  One second signals were S3 the 
next they were S7 to S9.  Forty meters was more quiet but fewer 
signals.  Maybe 0100z would be better for that band.



  On 14050.5 kHz at 2200z:

W0CZ - Ken - ND

NO8V - John - MI

K6XK - Roy - IA

K0DTJ - Brian - CA

KL7CW - Rick - AK


  On 7047.5 kHz at z:

K0DTJ - Brian - CA

K6PJV - Dale - CA


  We talked about home cooking, more yard work, spring weather, and 
what we're doing to stay busy during confinement.  Reading and writing 
came up.  I've been banging at the keyboard writing software and 
detailed design documents for each application.  It's getting to be a 
habit.  I also have been rereading text books for ideas on writing more 
code.  Differential equations are a good source as is the realm of 
linear algebra.  But applying abstract algebra is more difficult.


  There are a lot more furry critters out and about.  I saw my first 
snake of the year recently too.  A very fat garter snake. The ferns are 
unrolling rapidly.  Friday there were a few six inches tall.  Today 
those are three feet tall.  Warmer soil has also awakened the moles out 
aerating the grass.


  Hopefully this week the sun will continue its run of small sunspots.

Until next week 73,

    Kevin.  KD5ONS

-

__
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 arch...@mail-archive.com 

Re: [Elecraft] Upper limits of KPA500?

[Dave Cole]

Hi Rick,
That is how mine behaves as well, almost exactly like that...  However, 
I will be running SSTV, and that is hard on the amp...  I need to do a 
bit more testing prior to that.


As someone else said upthread, half power is really tough on the amp...

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 5/3/20 7:52 PM, Rick Bates, NK7I wrote:

I spent 15 minutes active on 20M FT8 this afternoon (some lurking).

At 530 watts output (on the display and utility) into a 1.13:1 antenna 
load (SteppIR) for a ten minute calling period (Mongolia then Oman), the 
temp rose to 66C; a few moments of elevated fan quickly brought that 
down to the low 60's between transmissions.


Ambient room temp 77F.  (Both calls succeeded.)

Rick NK7I
North Idaho

On 5/3/2020 7:42 PM, Andy Durbin wrote:
"It is interesting to hear how others experience their KPA500s over 
various conditions."


I have over a years's worth of KPA500 data recorded but it takes some 
effort to run it through the Excel templates to make pretty plots.


My KPA500 temperatures are strongly influenced by ambient 
temperature.  Shack temperature is often over 30 deg C in the summer 
months and it's not at all unusual for my fan to run at level 3 in FT8 
QSO.  I think I have only reached fan speed 5 twice and that was while 
running temperature tests not while operating.   I terminated those 
tests at fan speed 5 and didn't wish to push it any higher.


So many people seem to think reducing the output power will keep the 
temperature down.  It does not.   Half power is about the worst heat 
dissipation condition for the KPA500.


73,
Andy, k3wyc
__
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 rick.n...@gmail.com

__
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 d...@nk7z.net

__
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 arch...@mail-archive.com 

Re: [Elecraft] Upper limits of KPA500?

[kc8wh.mh]

I use my KPA 500 in SSB and CW ops. Much of it as net control on traffic nets 
and passing traffic. A little pile up breaking during DXing and some hunt and 
pounce contesting.Temps usually hover around 50c with some trips to mid to 
upper 50s.I don't remember seeing it hit 60c.In almost four years of daily 
use.Mike. KC8WHSent from my Verizon, Samsung Galaxy Tablet
 Original message From: Dave Cole  Date: 5/3/20  
6:51 PM  (GMT-05:00) To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Upper 
limits of KPA500? I hope others chime in with the operating temps they 
routinely see... This is a very useful discussion.73, and thanks,Dave 
(NK7Z)https://www.nk7z.netARRL Volunteer ExaminerARRL Technical SpecialistARRL 
Asst. Director, NW Division, Technical ResourcesOn 5/3/20 3:47 PM, Ted Edwards 
W3TB wrote:> I am glad to see these numbers and comments, because I have 
wondered > about the temperatures.  If running on CW in contests, it shows 
upper > 50s and reaches 60C.> > Thanks gang!> > On Sun, May 3, 2020 at 17:42 
Dave Cole  > wrote:> > Pure paranoia! 
 :)> > I tend to creep into things I consider limits, and not race to them. 
 I> normally run the amp in such a way that it never exceeds 60 or at 
worst> 65 C.  Seeing it hit 70 makes me nervous...> > So...> > 
Prior to any excursions in to the above 70C area I need to learn more,> 
which is what your post just helped me do!  Thank you!!> > Knowing that 
others can run the KPA500 90C, eases my fear of amp final> damage.> > I 
have always ran tube amps in the past, and at one point owned a very> 
sensitive SS amp, which killed a few sets of finals.> > It turns out there 
were other issues at play, (design issues I think),> but that experience 
made me very jumpy about SS amps.  I almost went> back to tube amps prior 
to purchasing the KPA500.  After owning KPA500> for a while now, I would 
never go back to tubes...  So I am being as> careful as possible to insure 
I understand what I am asking the amp to> do, before I ask it to do 
something it was not designed for.> > 73, and thanks,> Dave (NK7Z)> 
https://www.nk7z.net> ARRL Volunteer Examiner> ARRL Technical 
Specialist> ARRL Asst. Director, NW Division, Technical Resources> > On 
5/3/20 1:36 PM, Jack Brindle wrote:>  > Dave;>  >>  > The KPA500 
will protect itself above 90C, but it will work quite> well at 70C. Why do 
you stop at 70C?>  >>  > 73!>  > Jack, W6FB>  >>  >>  
>> On May 3, 2020, at 1:26 PM, Dave Cole  
> wrote:>  >>>  >> Hello,>  >>>  >> I 
just got the new MMSSTV software, and will be running a bit of> SSTV. SSTV 
is 100% duty cycle.>  >>>  >> Initial testing here indicates no power 
level is safe...  At 150> watts the KPA500 reaches 70C pretty fast, in 
under two minutes, and> 70C is my upper limit for testing...  At 500 watts 
it reaches 70C in> about the same time...>  >>>  >> Can I assume 
the amp is not the most efficient thing in the> world at 200 watts?>  
>>>  >> If the KPA500 can't deal with 100% duty cycle, for two minutes,>
 how does the K3 deal with 100 watts for two minutes, at 100% duty cycle?>  
>>>  >> -->  >> 73, and thanks,>  >> Dave (NK7Z)>  >> 
https://www.nk7z.net>  >> ARRL Volunteer Examiner>  >> ARRL Technical 
Specialist>  >> ARRL Asst. Director, NW Division, Technical Resources>  
>> __>  >> 
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 jackbrin...@me.com >  >> 
__> 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 w3tb@gmail.com 
> > -- > 73 de Ted Edwards, W3TB and GØPWW> > and 
thinking about operating CW:> "Do today what others won't,> so you can do 
tomorrow what others 
can't."__Elecraft 
mailing listHome: http://mailman.qth.net/mailman/listinfo/elecraftHelp: 
http://mailman.qth.net/mmfaq.htmPost: mailto:elecr...@mailman.qth.netThis list 
hosted by: http://www.qsl.netPlease help 

Re: [Elecraft] Upper limits of KPA500?

[Macy monkeys]

I think reaching fan speed Level 5 requires clearance for take off :)

FWIW, Wayne answered my CQ on 40 CW today with his K4. Of course, it sounded 
terrific. I want one!! I wonder if I can convince the XYL to contribute her 
economic stimulus check to the cause? Hmmm...

John K7FD

> On May 3, 2020, at 7:42 PM, Andy Durbin  wrote:
> 
> "It is interesting to hear how others experience their KPA500s over various 
> conditions."
> 
> I have over a years's worth of KPA500 data recorded but it takes some effort 
> to run it through the Excel templates to make pretty plots.
> 
> My KPA500 temperatures are strongly influenced by ambient temperature.  Shack 
> temperature is often over 30 deg C in the summer months and it's not at all 
> unusual for my fan to run at level 3 in FT8 QSO.  I think I have only reached 
> fan speed 5 twice and that was while running temperature tests not while 
> operating.   I terminated those tests at fan speed 5 and didn't wish to push 
> it any higher.
> 
> So many people seem to think reducing the output power will keep the 
> temperature down.  It does not.   Half power is about the worst heat 
> dissipation condition for the KPA500.
> 
> 73,
> Andy, k3wyc
> __
> 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 macymonk...@charter.net 

__
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 arch...@mail-archive.com 

Re: [Elecraft] Upper limits of KPA500?

[Rick Bates, NK7I]

I spent 15 minutes active on 20M FT8 this afternoon (some lurking).

At 530 watts output (on the display and utility) into a 1.13:1 antenna 
load (SteppIR) for a ten minute calling period (Mongolia then Oman), the 
temp rose to 66C; a few moments of elevated fan quickly brought that 
down to the low 60's between transmissions.


Ambient room temp 77F.  (Both calls succeeded.)

Rick NK7I
North Idaho

On 5/3/2020 7:42 PM, Andy Durbin wrote:

"It is interesting to hear how others experience their KPA500s over various 
conditions."

I have over a years's worth of KPA500 data recorded but it takes some effort to 
run it through the Excel templates to make pretty plots.

My KPA500 temperatures are strongly influenced by ambient temperature.  Shack 
temperature is often over 30 deg C in the summer months and it's not at all 
unusual for my fan to run at level 3 in FT8 QSO.  I think I have only reached 
fan speed 5 twice and that was while running temperature tests not while 
operating.   I terminated those tests at fan speed 5 and didn't wish to push it 
any higher.

So many people seem to think reducing the output power will keep the 
temperature down.  It does not.   Half power is about the worst heat 
dissipation condition for the KPA500.

73,
Andy, k3wyc
__
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 rick.n...@gmail.com

__
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 arch...@mail-archive.com 

[Elecraft] Upper limits of KPA500?

[Andy Durbin]

"It is interesting to hear how others experience their KPA500s over various 
conditions."

I have over a years's worth of KPA500 data recorded but it takes some effort to 
run it through the Excel templates to make pretty plots.

My KPA500 temperatures are strongly influenced by ambient temperature.  Shack 
temperature is often over 30 deg C in the summer months and it's not at all 
unusual for my fan to run at level 3 in FT8 QSO.  I think I have only reached 
fan speed 5 twice and that was while running temperature tests not while 
operating.   I terminated those tests at fan speed 5 and didn't wish to push it 
any higher.

So many people seem to think reducing the output power will keep the 
temperature down.  It does not.   Half power is about the worst heat 
dissipation condition for the KPA500.

73,
Andy, k3wyc
__
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 arch...@mail-archive.com 

Re: [Elecraft] 40 meter net 5-3-2020

[Bill Frantz]

SWL report: I was in Peterborough, NH sitting outside with my 
KX3 on a picnic table near the Contoocook river. i.e. in a 
valley) using an AX1 and AX1E and running 5W on the internal 
batteries. No one could hear me, but reception was reasonably good.


NC0JW was up around S5 (with a noise level of S2-3). WB9JNZ was 
a bit weaker, but still easy copy. K8NU was also about S5. WM6P 
was barely copyable. I couldn't really copy any of the others. 
There was a lot of QSB.


73 Bill AE6JV

On 5/3/20 at 7:09 PM, 99sun...@gmail.com (Steve Hall) wrote:


7.280 mHz  1800Z
WM6P  Steve   GA   K3snet control
KB9AVO   Paul INK3s
N8SBE DaveMIK3s
WB9JNZ   Eric  IL K3
KA3RGM  Joe   PA   TS440S
NC0JWJimCO   KX3
KA6MOK  John CA   K2 10 Watts
K8NU   Carl   OH  K3s
Thanks to all checking in and those assisting with relays.


---
Bill Frantz| "The only thing we have to   | Periwinkle
(408)348-7900  | fear is fear itself." - FDR  | 150 
Rivermead Rd #235
www.pwpconsult.com | Inaugural address, 3/4/1933  | 
Peterborough, NH 03458


__
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 arch...@mail-archive.com 

Re: [Elecraft] Chinese wages

[Johnny Siu via Elecraft]

 Hello Patrick,
In the past, Chinese wages were really low so that the total costs of wages + 
hidden costs were still commercial viable.  Now, the story is totally different 
and you have to be worried about quality control and intellectual rights issues.
I am in Hong Kong and have seen the changes but it is far too sensitive to 
discuss openly here.  If you are aware of the news of Hong Kong, our young 
generation has been fighting hard in the past 9 months.
73
Johnny VR2XMC
PATRICK HICKS () 在 2020年5月4日星期一 上午07:27:13 [GMT+8] 
寫道：  
 
 As a ship's chief engineer I ran to Asia from the west coast for many years 
(30+). In the 60's it was true that the Chinese people made very poor wages but 
not so any more. It was also true that many of the products were marginal. In 
the years before I retired, my company shipyarded their vessels in China. Their 
steel work and production was first rate and fast; much faster than in the US. 
BUT to be fair, the US yards were full of military vessels. Remember also that 
the cost of living in China is very much lower than here and their living and 
social structure are much different. Apples to oranges...

73
PJH, N7PH
__
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 vr2...@yahoo.com.hk 
  
__
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 arch...@mail-archive.com 

Re: [Elecraft] Upper limits of KPA500?

[Jack Brindle via Elecraft]

Let me state things a bit better this time. The amplifier is designed to 
protect itself, and does a very good job of it no matter the condition.
It will do a good job of warning you before anything bad happens; make sure bad 
things don’t happen very much and your amp will have a very happy life.
For temperature, it will declare a fault when the measured temperature reaches 
90C. Below that the amplifier works very well, adjusting the fan to keep the 
PAs as cool as possible. Even though a fault is declared at 90C, the cooling 
system will continue to run (with the amp in STBY) to get the KPA back into its 
safe zone.

By the way, the KPA exhausts air because that was what our analysis and testing 
showed was the best for this configuration. Plenty of room behind the amp 
keeps the back pressure down and the air flowing smoothly so the cooling system 
does its great job.

And, I agree. It is interesting to hear how others experience their KPA500s 
over various conditions.

73!
Jack, W6FB



> On May 3, 2020, at 3:51 PM, Dave Cole  wrote:
> 
> I hope others chime in with the operating temps they routinely see... This is 
> a very useful discussion.
> 
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist
> ARRL Asst. Director, NW Division, Technical Resources
> 
> On 5/3/20 3:47 PM, Ted Edwards W3TB wrote:
>> I am glad to see these numbers and comments, because I have wondered about 
>> the temperatures.  If running on CW in contests, it shows upper 50s and 
>> reaches 60C.
>> Thanks gang!
>> On Sun, May 3, 2020 at 17:42 Dave Cole > > wrote:
>>Pure paranoia!  :)
>>I tend to creep into things I consider limits, and not race to them.  I
>>normally run the amp in such a way that it never exceeds 60 or at worst
>>65 C.  Seeing it hit 70 makes me nervous...
>>So...
>>Prior to any excursions in to the above 70C area I need to learn more,
>>which is what your post just helped me do!  Thank you!!
>>Knowing that others can run the KPA500 90C, eases my fear of amp final
>>damage.
>>I have always ran tube amps in the past, and at one point owned a very
>>sensitive SS amp, which killed a few sets of finals.
>>It turns out there were other issues at play, (design issues I think),
>>but that experience made me very jumpy about SS amps.  I almost went
>>back to tube amps prior to purchasing the KPA500.  After owning KPA500
>>for a while now, I would never go back to tubes...  So I am being as
>>careful as possible to insure I understand what I am asking the amp to
>>do, before I ask it to do something it was not designed for.
>>73, and thanks,
>>Dave (NK7Z)
>>https://www.nk7z.net
>>ARRL Volunteer Examiner
>>ARRL Technical Specialist
>>ARRL Asst. Director, NW Division, Technical Resources
>>On 5/3/20 1:36 PM, Jack Brindle wrote:
>> > Dave;
>> >
>> > The KPA500 will protect itself above 90C, but it will work quite
>>well at 70C. Why do you stop at 70C?
>> >
>> > 73!
>> > Jack, W6FB
>> >
>> >
>> >> On May 3, 2020, at 1:26 PM, Dave Cole >> wrote:
>> >>
>> >> Hello,
>> >>
>> >> I just got the new MMSSTV software, and will be running a bit of
>>SSTV. SSTV is 100% duty cycle.
>> >>
>> >> Initial testing here indicates no power level is safe...  At 150
>>watts the KPA500 reaches 70C pretty fast, in under two minutes, and
>>70C is my upper limit for testing...  At 500 watts it reaches 70C in
>>about the same time...
>> >>
>> >> Can I assume the amp is not the most efficient thing in the
>>world at 200 watts?
>> >>
>> >> If the KPA500 can't deal with 100% duty cycle, for two minutes,
>>how does the K3 deal with 100 watts for two minutes, at 100% duty cycle?
>> >>
>> >> --
>> >> 73, and thanks,
>> >> Dave (NK7Z)
>> >> https://www.nk7z.net
>> >> ARRL Volunteer Examiner
>> >> ARRL Technical Specialist
>> >> ARRL Asst. Director, NW Division, Technical Resources
>> >> __
>> >> 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 jackbrin...@me.com 
>> >
>>__
>>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
>>

Re: [Elecraft] Steve Anness

[Steve Anness]

Welcome back to HF!  If you reach me off the list I am happy to arrange a
sked when you are ready.  Might be tough QRP to QRP but always worth a
try.  I think you will be very pleased with the KX2, mine has mostly made
digital contacts up until this point but I have been very pleased with it.
Hope to hear you on the air!

73 de KJ5T

On Sun, May 3, 2020 at 6:16 PM Tommy Judson via Elecraft <
elecraft@mailman.qth.net> wrote:

> Glad to see this post, could almost be from me in a week or so.  The only
> difference is I’ve been AWAY from HF for 19 years and CW since the early
> 60’s.
>
> Been reading the KX2 manual over and over and think it has to be at least
> as good as you say for this guy, could be more.
>
> > --
> >
> > Message: 3
> > Date: Sat, 2 May 2020 19:25:01 -0500
> > From: Steve Anness 
> > To: elecraft@mailman.qth.net
> > Subject: [Elecraft] Getting into CW and WOW! Praise for the KX2
> > Message-ID:
> >jts7itqpr8ubmoa8v1...@mail.gmail.com>
> > Content-Type: text/plain; charset="UTF-8"
> >
> > Recently I decided after almost 19 years in ham radio I would finally do
> > what it takes to become a CW operator.  After about 10 days of
> re-learning
> > the code and also spending a fair amount of time with sending practice
> > using both my dad's old Radio Shack Straight Key (Ameco look alike) and
> my
> > MFJ-564 using the practice feature on the Elecraft KX2, I made my first
> CW
> > contact today with Steve WB2WIK in California.
> >
> > Obviously KX2 was designed by people who love CW and the history of the
> > Elecraft radios has been about really good CW rigs.  In general I am
> still
> > really impressed with how wonderful the CW signals sound, I am listening
> to
> > K7M right now on 20 meters running in the 7QP, using the default 500Hz
> B/W
> > and it just amazes me how good the signals sound on this tiny little rig.
> >
> > So I am not saying anything that anyone on this reflector doesn't already
> > know but wanted to share my story and spread some praise.  Keep it up
> > Elecraft!
> >
> > --
>
> __
> 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 st...@kj5t.net
__
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 arch...@mail-archive.com 

[Elecraft] Chinese wages

[PATRICK HICKS]

As a ship's chief engineer I ran to Asia from the west coast for many years 
(30+). In the 60's it was true that the Chinese people made very poor wages but 
not so any more. It was also true that many of the products were marginal. In 
the years before I retired, my company shipyarded their vessels in China. Their 
steel work and production was first rate and fast; much faster than in the US. 
BUT to be fair, the US yards were full of military vessels. Remember also that 
the cost of living in China is very much lower than here and their living and 
social structure are much different. Apples to oranges...

73
PJH, N7PH
__
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 arch...@mail-archive.com 

[Elecraft] Steve Anness

[Tommy Judson via Elecraft]

Glad to see this post, could almost be from me in a week or so.  The only 
difference is I’ve been AWAY from HF for 19 years and CW since the early 60’s.

Been reading the KX2 manual over and over and think it has to be at least as 
good as you say for this guy, could be more.

> --
> 
> Message: 3
> Date: Sat, 2 May 2020 19:25:01 -0500
> From: Steve Anness 
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] Getting into CW and WOW! Praise for the KX2
> Message-ID:
>   
> Content-Type: text/plain; charset="UTF-8"
> 
> Recently I decided after almost 19 years in ham radio I would finally do
> what it takes to become a CW operator.  After about 10 days of re-learning
> the code and also spending a fair amount of time with sending practice
> using both my dad's old Radio Shack Straight Key (Ameco look alike) and my
> MFJ-564 using the practice feature on the Elecraft KX2, I made my first CW
> contact today with Steve WB2WIK in California.
> 
> Obviously KX2 was designed by people who love CW and the history of the
> Elecraft radios has been about really good CW rigs.  In general I am still
> really impressed with how wonderful the CW signals sound, I am listening to
> K7M right now on 20 meters running in the 7QP, using the default 500Hz B/W
> and it just amazes me how good the signals sound on this tiny little rig.
> 
> So I am not saying anything that anyone on this reflector doesn't already
> know but wanted to share my story and spread some praise.  Keep it up
> Elecraft!
> 
> --

__
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 arch...@mail-archive.com 

Re: [Elecraft] Upper limits of KPA500?

[Chuck Chandler]

Normally high 50's to low 60's in a rag chew.  During a CW contest running
stations, it sits around 65C more or less.

On Sun, May 3, 2020 at 5:53 PM Dave Cole  wrote:

> I hope others chime in with the operating temps they routinely see...
> This is a very useful discussion.
>
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist
> ARRL Asst. Director, NW Division, Technical Resources
>
> On 5/3/20 3:47 PM, Ted Edwards W3TB wrote:
> > I am glad to see these numbers and comments, because I have wondered
> > about the temperatures.  If running on CW in contests, it shows upper
> > 50s and reaches 60C.
> >
> > Thanks gang!
> >
> > On Sun, May 3, 2020 at 17:42 Dave Cole  > > wrote:
> >
> > Pure paranoia!  :)
> >
> > I tend to creep into things I consider limits, and not race to
> them.  I
> > normally run the amp in such a way that it never exceeds 60 or at
> worst
> > 65 C.  Seeing it hit 70 makes me nervous...
> >
> > So...
> >
> > Prior to any excursions in to the above 70C area I need to learn
> more,
> > which is what your post just helped me do!  Thank you!!
> >
> > Knowing that others can run the KPA500 90C, eases my fear of amp
> final
> > damage.
> >
> > I have always ran tube amps in the past, and at one point owned a
> very
> > sensitive SS amp, which killed a few sets of finals.
> >
> > It turns out there were other issues at play, (design issues I
> think),
> > but that experience made me very jumpy about SS amps.  I almost went
> > back to tube amps prior to purchasing the KPA500.  After owning
> KPA500
> > for a while now, I would never go back to tubes...  So I am being as
> > careful as possible to insure I understand what I am asking the amp
> to
> > do, before I ask it to do something it was not designed for.
> >
> > 73, and thanks,
> > Dave (NK7Z)
> > https://www.nk7z.net
> > ARRL Volunteer Examiner
> > ARRL Technical Specialist
> > ARRL Asst. Director, NW Division, Technical Resources
> >
> > On 5/3/20 1:36 PM, Jack Brindle wrote:
> >  > Dave;
> >  >
> >  > The KPA500 will protect itself above 90C, but it will work quite
> > well at 70C. Why do you stop at 70C?
> >  >
> >  > 73!
> >  > Jack, W6FB
> >  >
> >  >
> >  >> On May 3, 2020, at 1:26 PM, Dave Cole  > > wrote:
> >  >>
> >  >> Hello,
> >  >>
> >  >> I just got the new MMSSTV software, and will be running a bit of
> > SSTV. SSTV is 100% duty cycle.
> >  >>
> >  >> Initial testing here indicates no power level is safe...  At 150
> > watts the KPA500 reaches 70C pretty fast, in under two minutes, and
> > 70C is my upper limit for testing...  At 500 watts it reaches 70C in
> > about the same time...
> >  >>
> >  >> Can I assume the amp is not the most efficient thing in the
> > world at 200 watts?
> >  >>
> >  >> If the KPA500 can't deal with 100% duty cycle, for two minutes,
> > how does the K3 deal with 100 watts for two minutes, at 100% duty
> cycle?
> >  >>
> >  >> --
> >  >> 73, and thanks,
> >  >> Dave (NK7Z)
> >  >> https://www.nk7z.net
> >  >> ARRL Volunteer Examiner
> >  >> ARRL Technical Specialist
> >  >> ARRL Asst. Director, NW Division, Technical Resources
> >  >> __
> >  >> 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 jackbrin...@me.com  jackbrin...@me.com>
> >  >
> > __
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Elecraft@mailman.qth.net  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 w3tb@gmail.com 
> >
> > --
> > 73 de Ted Edwards, W3TB and GØPWW
> >
> > and thinking about operating CW:
> > "Do today what others won't,
> > so you can do tomorrow what others can't."
> __
> 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 t

[Elecraft] 40 meter net 5-3-2020

[Steve Hall]

7.280 mHz  1800Z
WM6P  Steve   GA   K3snet control
KB9AVO   Paul INK3s
N8SBE DaveMIK3s
WB9JNZ   Eric  IL K3
KA3RGM  Joe   PA   TS440S
NC0JWJimCO   KX3
KA6MOK  John CA   K2 10 Watts
K8NU   Carl   OH  K3s
Thanks to all checking in and those assisting with relays.
__
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 arch...@mail-archive.com 

Re: [Elecraft] Upper limits of KPA500?

[Dave Cole]

I hope others chime in with the operating temps they routinely see... 
This is a very useful discussion.


73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 5/3/20 3:47 PM, Ted Edwards W3TB wrote:
I am glad to see these numbers and comments, because I have wondered 
about the temperatures.  If running on CW in contests, it shows upper 
50s and reaches 60C.


Thanks gang!

On Sun, May 3, 2020 at 17:42 Dave Cole > wrote:


Pure paranoia!  :)

I tend to creep into things I consider limits, and not race to them.  I
normally run the amp in such a way that it never exceeds 60 or at worst
65 C.  Seeing it hit 70 makes me nervous...

So...

Prior to any excursions in to the above 70C area I need to learn more,
which is what your post just helped me do!  Thank you!!

Knowing that others can run the KPA500 90C, eases my fear of amp final
damage.

I have always ran tube amps in the past, and at one point owned a very
sensitive SS amp, which killed a few sets of finals.

It turns out there were other issues at play, (design issues I think),
but that experience made me very jumpy about SS amps.  I almost went
back to tube amps prior to purchasing the KPA500.  After owning KPA500
for a while now, I would never go back to tubes...  So I am being as
careful as possible to insure I understand what I am asking the amp to
do, before I ask it to do something it was not designed for.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 5/3/20 1:36 PM, Jack Brindle wrote:
 > Dave;
 >
 > The KPA500 will protect itself above 90C, but it will work quite
well at 70C. Why do you stop at 70C?
 >
 > 73!
 > Jack, W6FB
 >
 >
 >> On May 3, 2020, at 1:26 PM, Dave Cole mailto:d...@nk7z.net>> wrote:
 >>
 >> Hello,
 >>
 >> I just got the new MMSSTV software, and will be running a bit of
SSTV. SSTV is 100% duty cycle.
 >>
 >> Initial testing here indicates no power level is safe...  At 150
watts the KPA500 reaches 70C pretty fast, in under two minutes, and
70C is my upper limit for testing...  At 500 watts it reaches 70C in
about the same time...
 >>
 >> Can I assume the amp is not the most efficient thing in the
world at 200 watts?
 >>
 >> If the KPA500 can't deal with 100% duty cycle, for two minutes,
how does the K3 deal with 100 watts for two minutes, at 100% duty cycle?
 >>
 >> --
 >> 73, and thanks,
 >> Dave (NK7Z)
 >> https://www.nk7z.net
 >> ARRL Volunteer Examiner
 >> ARRL Technical Specialist
 >> ARRL Asst. Director, NW Division, Technical Resources
 >> __
 >> 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 jackbrin...@me.com 
 >
__
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 w3tb@gmail.com 

--
73 de Ted Edwards, W3TB and GØPWW

and thinking about operating CW:
"Do today what others won't,
so you can do tomorrow what others can't."

__
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 arch...@mail-archive.com 

Re: [Elecraft] Upper limits of KPA500?

[Ted Edwards W3TB]

I am glad to see these numbers and comments, because I have wondered about
the temperatures.  If running on CW in contests, it shows upper 50s and
reaches 60C.

Thanks gang!

On Sun, May 3, 2020 at 17:42 Dave Cole  wrote:

> Pure paranoia!  :)
>
> I tend to creep into things I consider limits, and not race to them.  I
> normally run the amp in such a way that it never exceeds 60 or at worst
> 65 C.  Seeing it hit 70 makes me nervous...
>
> So...
>
> Prior to any excursions in to the above 70C area I need to learn more,
> which is what your post just helped me do!  Thank you!!
>
> Knowing that others can run the KPA500 90C, eases my fear of amp final
> damage.
>
> I have always ran tube amps in the past, and at one point owned a very
> sensitive SS amp, which killed a few sets of finals.
>
> It turns out there were other issues at play, (design issues I think),
> but that experience made me very jumpy about SS amps.  I almost went
> back to tube amps prior to purchasing the KPA500.  After owning KPA500
> for a while now, I would never go back to tubes...  So I am being as
> careful as possible to insure I understand what I am asking the amp to
> do, before I ask it to do something it was not designed for.
>
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist
> ARRL Asst. Director, NW Division, Technical Resources
>
> On 5/3/20 1:36 PM, Jack Brindle wrote:
> > Dave;
> >
> > The KPA500 will protect itself above 90C, but it will work quite well at
> 70C. Why do you stop at 70C?
> >
> > 73!
> > Jack, W6FB
> >
> >
> >> On May 3, 2020, at 1:26 PM, Dave Cole  wrote:
> >>
> >> Hello,
> >>
> >> I just got the new MMSSTV software, and will be running a bit of SSTV.
> SSTV is 100% duty cycle.
> >>
> >> Initial testing here indicates no power level is safe...  At 150 watts
> the KPA500 reaches 70C pretty fast, in under two minutes, and 70C is my
> upper limit for testing...  At 500 watts it reaches 70C in about the same
> time...
> >>
> >> Can I assume the amp is not the most efficient thing in the world at
> 200 watts?
> >>
> >> If the KPA500 can't deal with 100% duty cycle, for two minutes, how
> does the K3 deal with 100 watts for two minutes, at 100% duty cycle?
> >>
> >> --
> >> 73, and thanks,
> >> Dave (NK7Z)
> >> https://www.nk7z.net
> >> ARRL Volunteer Examiner
> >> ARRL Technical Specialist
> >> ARRL Asst. Director, NW Division, Technical Resources
> >> __
> >> 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 jackbrin...@me.com
> >
> __
> 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 w3tb@gmail.com
>
-- 
73 de Ted Edwards, W3TB and GØPWW

and thinking about operating CW:
"Do today what others won't,
so you can do tomorrow what others can't."
__
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 arch...@mail-archive.com 

Re: [Elecraft] Upper limits of KPA500?

[Dave Cole]

Pure paranoia!  :)

I tend to creep into things I consider limits, and not race to them.  I 
normally run the amp in such a way that it never exceeds 60 or at worst 
65 C.  Seeing it hit 70 makes me nervous...


So...

Prior to any excursions in to the above 70C area I need to learn more, 
which is what your post just helped me do!  Thank you!!


Knowing that others can run the KPA500 90C, eases my fear of amp final 
damage.


I have always ran tube amps in the past, and at one point owned a very 
sensitive SS amp, which killed a few sets of finals.


It turns out there were other issues at play, (design issues I think), 
but that experience made me very jumpy about SS amps.  I almost went 
back to tube amps prior to purchasing the KPA500.  After owning KPA500 
for a while now, I would never go back to tubes...  So I am being as 
careful as possible to insure I understand what I am asking the amp to 
do, before I ask it to do something it was not designed for.


73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 5/3/20 1:36 PM, Jack Brindle wrote:

Dave;

The KPA500 will protect itself above 90C, but it will work quite well at 70C. 
Why do you stop at 70C?

73!
Jack, W6FB



On May 3, 2020, at 1:26 PM, Dave Cole  wrote:

Hello,

I just got the new MMSSTV software, and will be running a bit of SSTV. SSTV is 
100% duty cycle.

Initial testing here indicates no power level is safe...  At 150 watts the 
KPA500 reaches 70C pretty fast, in under two minutes, and 70C is my upper limit 
for testing...  At 500 watts it reaches 70C in about the same time...

Can I assume the amp is not the most efficient thing in the world at 200 watts?

If the KPA500 can't deal with 100% duty cycle, for two minutes, how does the K3 
deal with 100 watts for two minutes, at 100% duty cycle?

--
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources
__
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 jackbrin...@me.com



__
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 arch...@mail-archive.com 

Re: [Elecraft] KPA 500 fault!

[Tom Doligalski via Elecraft]

Thanks! I found the earlier manual online, and am back operational!

Thanks!

Tom W4KX

> On May 3, 2020, at 4:14 PM, iain macdonnell - N6ML  wrote:
> 
> On my early model, the interlock switch is actuated by an assembly
> including a 13mm 4-40 standoff (and some other hardware), which is
> attached to the inside of the top cover. I'll attempt to send you the
> old (rev C) assembly manual off-list.
> 
> 73,
> 
>~iain / N6ML
> 
> 
> On Sun, May 3, 2020 at 1:07 PM Tom Doligalski via Elecraft
>  wrote:
>> 
>> Problem is definitely the interlock switch not being engaged correctly: if I 
>> close it manually (with a wooden rod!) the amp operates normally.
>> 
>> Anyone have an assembly manual for the older type KPA500, so I can see how 
>> the top-panel interlock switch is supposed to be engaged? Again, this a 
>> fairly old amp, and Elecraft changed things in later versions (like the one 
>> covered in the assembly manual currently on the website).
>> 
>> Thanks!
>> 
>> Tom W4KX
>> 
>>> On May 3, 2020, at 3:21 PM, Tom Doligalski via Elecraft 
>>>  wrote:
>>> 
>>> Hi Jack!
>>> 
>>> After cycling the main power the HV in standby is back to 70 V. But, every 
>>> time I go to operate mode, the error reoccurs.
>>> 
>>> This is with what I believe was the old style interlock switch (has a shaft 
>>> attached to the top cover to engage the switch when the top is screwed 
>>> down). Can’t tell if it is properly engaging. But the behavior is the same 
>>> when the top cover is totally removed.
>>> 
>>> How picky is this switch. I bought the amp used, and the assembly manual 
>>> online at elecraft doesn’t cover the old interlock switch.
>>> 
>>> Thanks for your help!
>>> 
>>> Tom W4KX
>>> 
>>> Sent from my iPad
>>> 
 On May 3, 2020, at 3:06 PM, Jack Brindle  wrote:
 
 A “270V ERR” fault indicates that the TR switch bias supply is not 
 working. This may be caused by the top cover being removed, the safety 
 switch attached to the top cover becoming loose or an actual failure of 
 the 270V supply. Since your main HV supply is now down close to 0V, it 
 looks like you have power supply issues. You should call technical support 
 on Monday to get help.
 
 73 and good luck getting your KPA going again.
 Jack, W6FB
 
 
> On May 3, 2020, at 11:32 AM, Tom Doligalski via Elecraft 
>  wrote:
> 
> My KPA500 has been working fine waited for 115 V. Just now it has been 
> throwing a “25=70 VAC” fault!
> 
> Can anyone lead me in helping this? Fuses look good. HV read 0.1 v when 
> in standby, which is FAR from the 70 some volts it used to read.
> 
> Thanks!
> 
> Tom W4KX
> __
> 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 jackbrin...@me.com
 
>>> __
>>> 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 w...@mac.com
>> 
>> __
>> 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 a...@dseven.org

__
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 arch...@mail-archive.com 

Re: [Elecraft] Upper limits of KPA500?

[Jack Brindle via Elecraft]

Dave;

The KPA500 will protect itself above 90C, but it will work quite well at 70C. 
Why do you stop at 70C?

73!
Jack, W6FB


> On May 3, 2020, at 1:26 PM, Dave Cole  wrote:
> 
> Hello,
> 
> I just got the new MMSSTV software, and will be running a bit of SSTV. SSTV 
> is 100% duty cycle.
> 
> Initial testing here indicates no power level is safe...  At 150 watts the 
> KPA500 reaches 70C pretty fast, in under two minutes, and 70C is my upper 
> limit for testing...  At 500 watts it reaches 70C in about the same time...
> 
> Can I assume the amp is not the most efficient thing in the world at 200 
> watts?
> 
> If the KPA500 can't deal with 100% duty cycle, for two minutes, how does the 
> K3 deal with 100 watts for two minutes, at 100% duty cycle?
> 
> -- 
> 73, and thanks,
> Dave (NK7Z)
> https://www.nk7z.net
> ARRL Volunteer Examiner
> ARRL Technical Specialist
> ARRL Asst. Director, NW Division, Technical Resources
> __
> 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 jackbrin...@me.com 

__
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 arch...@mail-archive.com 

[Elecraft] Upper limits of KPA500?

[Dave Cole]

Hello,

I just got the new MMSSTV software, and will be running a bit of SSTV. 
SSTV is 100% duty cycle.


Initial testing here indicates no power level is safe...  At 150 watts 
the KPA500 reaches 70C pretty fast, in under two minutes, and 70C is my 
upper limit for testing...  At 500 watts it reaches 70C in about the 
same time...


Can I assume the amp is not the most efficient thing in the world at 200 
watts?


If the KPA500 can't deal with 100% duty cycle, for two minutes, how does 
the K3 deal with 100 watts for two minutes, at 100% duty cycle?


--
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources
__
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 arch...@mail-archive.com 

Re: [Elecraft] KPA 500 fault!

[Dave Cole]

Ian,
Could you also send me a copy, I have an older amp as well.

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources

On 5/3/20 1:14 PM, iain macdonnell - N6ML wrote:

On my early model, the interlock switch is actuated by an assembly
including a 13mm 4-40 standoff (and some other hardware), which is
attached to the inside of the top cover. I'll attempt to send you the
old (rev C) assembly manual off-list.

73,

 ~iain / N6ML


On Sun, May 3, 2020 at 1:07 PM Tom Doligalski via Elecraft
 wrote:


Problem is definitely the interlock switch not being engaged correctly: if I 
close it manually (with a wooden rod!) the amp operates normally.

Anyone have an assembly manual for the older type KPA500, so I can see how the 
top-panel interlock switch is supposed to be engaged? Again, this a fairly old 
amp, and Elecraft changed things in later versions (like the one covered in the 
assembly manual currently on the website).

Thanks!

Tom W4KX


On May 3, 2020, at 3:21 PM, Tom Doligalski via Elecraft 
 wrote:

Hi Jack!

After cycling the main power the HV in standby is back to 70 V. But, every time 
I go to operate mode, the error reoccurs.

This is with what I believe was the old style interlock switch (has a shaft 
attached to the top cover to engage the switch when the top is screwed down). 
Can’t tell if it is properly engaging. But the behavior is the same when the 
top cover is totally removed.

How picky is this switch. I bought the amp used, and the assembly manual online 
at elecraft doesn’t cover the old interlock switch.

Thanks for your help!

Tom W4KX

Sent from my iPad


On May 3, 2020, at 3:06 PM, Jack Brindle  wrote:

A “270V ERR” fault indicates that the TR switch bias supply is not working. 
This may be caused by the top cover being removed, the safety switch attached 
to the top cover becoming loose or an actual failure of the 270V supply. Since 
your main HV supply is now down close to 0V, it looks like you have power 
supply issues. You should call technical support on Monday to get help.

73 and good luck getting your KPA going again.
Jack, W6FB



On May 3, 2020, at 11:32 AM, Tom Doligalski via Elecraft 
 wrote:

My KPA500 has been working fine waited for 115 V. Just now it has been throwing 
a “25=70 VAC” fault!

Can anyone lead me in helping this? Fuses look good. HV read 0.1 v when in 
standby, which is FAR from the 70 some volts it used to read.

Thanks!

Tom W4KX
__
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 jackbrin...@me.com



__
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 w...@mac.com


__
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 a...@dseven.org

__
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 d...@nk7z.net


__
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 arch...@mail-archive.com 

Re: [Elecraft] KPA 500 fault!

[iain macdonnell - N6ML]

On my early model, the interlock switch is actuated by an assembly
including a 13mm 4-40 standoff (and some other hardware), which is
attached to the inside of the top cover. I'll attempt to send you the
old (rev C) assembly manual off-list.

73,

~iain / N6ML


On Sun, May 3, 2020 at 1:07 PM Tom Doligalski via Elecraft
 wrote:
>
> Problem is definitely the interlock switch not being engaged correctly: if I 
> close it manually (with a wooden rod!) the amp operates normally.
>
> Anyone have an assembly manual for the older type KPA500, so I can see how 
> the top-panel interlock switch is supposed to be engaged? Again, this a 
> fairly old amp, and Elecraft changed things in later versions (like the one 
> covered in the assembly manual currently on the website).
>
> Thanks!
>
> Tom W4KX
>
> > On May 3, 2020, at 3:21 PM, Tom Doligalski via Elecraft 
> >  wrote:
> >
> > Hi Jack!
> >
> > After cycling the main power the HV in standby is back to 70 V. But, every 
> > time I go to operate mode, the error reoccurs.
> >
> > This is with what I believe was the old style interlock switch (has a shaft 
> > attached to the top cover to engage the switch when the top is screwed 
> > down). Can’t tell if it is properly engaging. But the behavior is the same 
> > when the top cover is totally removed.
> >
> > How picky is this switch. I bought the amp used, and the assembly manual 
> > online at elecraft doesn’t cover the old interlock switch.
> >
> > Thanks for your help!
> >
> > Tom W4KX
> >
> > Sent from my iPad
> >
> >> On May 3, 2020, at 3:06 PM, Jack Brindle  wrote:
> >>
> >> A “270V ERR” fault indicates that the TR switch bias supply is not 
> >> working. This may be caused by the top cover being removed, the safety 
> >> switch attached to the top cover becoming loose or an actual failure of 
> >> the 270V supply. Since your main HV supply is now down close to 0V, it 
> >> looks like you have power supply issues. You should call technical support 
> >> on Monday to get help.
> >>
> >> 73 and good luck getting your KPA going again.
> >> Jack, W6FB
> >>
> >>
> >>> On May 3, 2020, at 11:32 AM, Tom Doligalski via Elecraft 
> >>>  wrote:
> >>>
> >>> My KPA500 has been working fine waited for 115 V. Just now it has been 
> >>> throwing a “25=70 VAC” fault!
> >>>
> >>> Can anyone lead me in helping this? Fuses look good. HV read 0.1 v when 
> >>> in standby, which is FAR from the 70 some volts it used to read.
> >>>
> >>> Thanks!
> >>>
> >>> Tom W4KX
> >>> __
> >>> 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 jackbrin...@me.com
> >>
> > __
> > 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 w...@mac.com
>
> __
> 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 a...@dseven.org
__
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 arch...@mail-archive.com 

Re: [Elecraft] KPA 500 fault!

[Tom Doligalski via Elecraft]

Problem is definitely the interlock switch not being engaged correctly: if I 
close it manually (with a wooden rod!) the amp operates normally. 

Anyone have an assembly manual for the older type KPA500, so I can see how the 
top-panel interlock switch is supposed to be engaged? Again, this a fairly old 
amp, and Elecraft changed things in later versions (like the one covered in the 
assembly manual currently on the website). 

Thanks!

Tom W4KX

> On May 3, 2020, at 3:21 PM, Tom Doligalski via Elecraft 
>  wrote:
> 
> Hi Jack!
> 
> After cycling the main power the HV in standby is back to 70 V. But, every 
> time I go to operate mode, the error reoccurs. 
> 
> This is with what I believe was the old style interlock switch (has a shaft 
> attached to the top cover to engage the switch when the top is screwed down). 
> Can’t tell if it is properly engaging. But the behavior is the same when the 
> top cover is totally removed. 
> 
> How picky is this switch. I bought the amp used, and the assembly manual 
> online at elecraft doesn’t cover the old interlock switch. 
> 
> Thanks for your help!
> 
> Tom W4KX
> 
> Sent from my iPad 
> 
>> On May 3, 2020, at 3:06 PM, Jack Brindle  wrote:
>> 
>> A “270V ERR” fault indicates that the TR switch bias supply is not working. 
>> This may be caused by the top cover being removed, the safety switch 
>> attached to the top cover becoming loose or an actual failure of the 270V 
>> supply. Since your main HV supply is now down close to 0V, it looks like you 
>> have power supply issues. You should call technical support on Monday to get 
>> help.
>> 
>> 73 and good luck getting your KPA going again.
>> Jack, W6FB
>> 
>> 
>>> On May 3, 2020, at 11:32 AM, Tom Doligalski via Elecraft 
>>>  wrote:
>>> 
>>> My KPA500 has been working fine waited for 115 V. Just now it has been 
>>> throwing a “25=70 VAC” fault!
>>> 
>>> Can anyone lead me in helping this? Fuses look good. HV read 0.1 v when in 
>>> standby, which is FAR from the 70 some volts it used to read. 
>>> 
>>> Thanks!
>>> 
>>> Tom W4KX
>>> __
>>> 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 jackbrin...@me.com
>> 
> __
> 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 w...@mac.com

__
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 arch...@mail-archive.com 

Re: [Elecraft] Coronavirus

[Ted Edwards W3TB]

One of the big post-Covid changes will be a big drawing back on
freewheeling and vulnerable global supply chains— I am all for that when I
take my blood pressure pill every morning.

On Sun, May 3, 2020 at 14:26 Raymond Sills via Elecraft <
elecraft@mailman.qth.net> wrote:

> Hi Group:
> If nothing else, the COVID-19 virus demonstrates that we live in a global
> civilization.  And, the Chinese manufacturers will build to whatever
> quality level you specify.  You can have cheap stuff or high quality
> products or components.A lot of today's smart phones (like the iPhone) are
> built in China.
> Wages may be lower in China as compared to the USA, but they aren't
> pennies to the dollar.  More like dimes to the dollar.  CNBC said that in
> 2015, factory workers earned an average of 3.60 per hour.  And, it's common
> for workers to be paid monthly, with extra pay for overtime, or piece work.
> There's no question, however,  that those lower wages draw companies to
> contract with Chinese companies.
>
> 73 de RayK2ULRKX3 #211
>
>
> -Original Message-
> From: Josh Fiden 
> To: Elecraft Reflector 
> Sent: Sun, May 3, 2020 2:59 pm
> Subject: Re: [Elecraft] Coronavirus
>
> Wages not that low in China anymore.
>
> 73
> Josh W6XU
>
> Sent from my mobile device
>
> > On May 3, 2020, at 11:24 AM, Nr4c  wrote:
> >
> > You do realize that for every k-Line component you buy, you are pay a
> Chinese worker a few dollars a eeek to manufacture the ic’s, transistors,
> resistors, capacitors, and other parts that get assembled in good ol’ USA.
> >
>
> __
> 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 raysil...@verizon.net
> __
> 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 w3tb@gmail.com

-- 
73 de Ted Edwards, W3TB and GØPWW

and thinking about operating CW:
"Do today what others won't,
so you can do tomorrow what others can't."
__
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 arch...@mail-archive.com 

Re: [Elecraft] Coronavirus

[Raymond Sills via Elecraft]

Hi Group:
If nothing else, the COVID-19 virus demonstrates that we live in a global 
civilization.  And, the Chinese manufacturers will build to whatever quality 
level you specify.  You can have cheap stuff or high quality products or 
components.A lot of today's smart phones (like the iPhone) are built in China.  
Wages may be lower in China as compared to the USA, but they aren't pennies to 
the dollar.  More like dimes to the dollar.  CNBC said that in 2015, factory 
workers earned an average of 3.60 per hour.  And, it's common for workers to be 
paid monthly, with extra pay for overtime, or piece work.
There's no question, however,  that those lower wages draw companies to 
contract with Chinese companies.  

73 de RayK2ULRKX3 #211


-Original Message-
From: Josh Fiden 
To: Elecraft Reflector 
Sent: Sun, May 3, 2020 2:59 pm
Subject: Re: [Elecraft] Coronavirus

Wages not that low in China anymore. 

73
Josh W6XU 

Sent from my mobile device

> On May 3, 2020, at 11:24 AM, Nr4c  wrote:
> 
> You do realize that for every k-Line component you buy, you are pay a 
> Chinese worker a few dollars a eeek to manufacture the ic’s, transistors, 
> resistors, capacitors, and other parts that get assembled in good ol’ USA. 
> 

__
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 raysil...@verizon.net 
__
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 arch...@mail-archive.com 

Re: [Elecraft] KPA 500 fault!

[Tom Doligalski via Elecraft]

Hi Jack!

After cycling the main power the HV in standby is back to 70 V. But, every time 
I go to operate mode, the error reoccurs. 

This is with what I believe was the old style interlock switch (has a shaft 
attached to the top cover to engage the switch when the top is screwed down). 
Can’t tell if it is properly engaging. But the behavior is the same when the 
top cover is totally removed. 

How picky is this switch. I bought the amp used, and the assembly manual online 
at elecraft doesn’t cover the old interlock switch. 

Thanks for your help!

Tom W4KX

Sent from my iPad 

> On May 3, 2020, at 3:06 PM, Jack Brindle  wrote:
> 
> A “270V ERR” fault indicates that the TR switch bias supply is not working. 
> This may be caused by the top cover being removed, the safety switch attached 
> to the top cover becoming loose or an actual failure of the 270V supply. 
> Since your main HV supply is now down close to 0V, it looks like you have 
> power supply issues. You should call technical support on Monday to get help.
> 
> 73 and good luck getting your KPA going again.
> Jack, W6FB
> 
> 
>> On May 3, 2020, at 11:32 AM, Tom Doligalski via Elecraft 
>>  wrote:
>> 
>> My KPA500 has been working fine waited for 115 V. Just now it has been 
>> throwing a “25=70 VAC” fault!
>> 
>> Can anyone lead me in helping this? Fuses look good. HV read 0.1 v when in 
>> standby, which is FAR from the 70 some volts it used to read. 
>> 
>> Thanks!
>> 
>> Tom W4KX
>> __
>> 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 jackbrin...@me.com
> 
__
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 arch...@mail-archive.com 

Re: [Elecraft] Coronavirus

[Jack Brindle via Elecraft]

Depends on the parts. The largest parts you see are indeed made in the US - 
these being the sheet metal, push buttons and many other components.
Global economy? Yes. Is the entire box made from components coming from outside 
the US? Definitely not. And I am 100% sure that the radios and devices are 
designed here by great engineers.
Essentially, we have the best of the entire world at play here, in products 
being used the world over. And that is pretty cool!

73!
Jack, W6FB


> On May 3, 2020, at 12:10 PM, W0FK  wrote:
> 
> Josh Fiden wrote
>> Wages not that low in China anymore. 
>> 
>> 73
>> Josh W6XU 
>> 
>> Sent from my mobile device
>> 
>>> On May 3, 2020, at 11:24 AM, Nr4c <
> 
>> nr4c@
> 
>> > wrote:
>>> 
>>> You do realize that for every k-Line component you buy, you are pay a
>>> Chinese worker a few dollars a eeek to manufacture the ic’s, transistors,
>>> resistors, capacitors, and other parts that get assembled in good ol’
>>> USA. 
> 
> I think Bill’s point (at least I read it that way) is that we have a global
> economy. Most electronic components are made in China or places other than
> the US. Elecraft products are assembled in the US for sure, but “made in the
> US”, no.  
> 
> 
> 
> 
> -
> St. Louis, MO
> 
> "The difference between stupidity and genius is that 
> genius has its limits." Albert Einstein
> 
> 
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
> __
> 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 jackbrin...@me.com

__
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 arch...@mail-archive.com 

Re: [Elecraft] Coronavirus

[W0FK]

Josh Fiden wrote
> Wages not that low in China anymore. 
> 
> 73
> Josh W6XU 
> 
> Sent from my mobile device
> 
>> On May 3, 2020, at 11:24 AM, Nr4c <

> nr4c@

> > wrote:
>> 
>> You do realize that for every k-Line component you buy, you are pay a
>> Chinese worker a few dollars a eeek to manufacture the ic’s, transistors,
>> resistors, capacitors, and other parts that get assembled in good ol’
>> USA. 

I think Bill’s point (at least I read it that way) is that we have a global
economy. Most electronic components are made in China or places other than
the US. Elecraft products are assembled in the US for sure, but “made in the
US”, no.  




-
St. Louis, MO

"The difference between stupidity and genius is that 
genius has its limits." Albert Einstein


--
Sent from: http://elecraft.365791.n2.nabble.com/
__
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 arch...@mail-archive.com 

Re: [Elecraft] KPA 500 fault!

[Jack Brindle via Elecraft]

A “270V ERR” fault indicates that the TR switch bias supply is not working. 
This may be caused by the top cover being removed, the safety switch attached 
to the top cover becoming loose or an actual failure of the 270V supply. Since 
your main HV supply is now down close to 0V, it looks like you have power 
supply issues. You should call technical support on Monday to get help.

73 and good luck getting your KPA going again.
Jack, W6FB


> On May 3, 2020, at 11:32 AM, Tom Doligalski via Elecraft 
>  wrote:
> 
> My KPA500 has been working fine waited for 115 V. Just now it has been 
> throwing a “25=70 VAC” fault!
> 
> Can anyone lead me in helping this? Fuses look good. HV read 0.1 v when in 
> standby, which is FAR from the 70 some volts it used to read. 
> 
> Thanks!
> 
> Tom W4KX
> __
> 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 jackbrin...@me.com

__
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 arch...@mail-archive.com 

Re: [Elecraft] Coronavirus

[Josh Fiden]

Wages not that low in China anymore. 

73
Josh W6XU 

Sent from my mobile device

> On May 3, 2020, at 11:24 AM, Nr4c  wrote:
> 
> You do realize that for every k-Line component you buy, you are pay a 
> Chinese worker a few dollars a eeek to manufacture the ic’s, transistors, 
> resistors, capacitors, and other parts that get assembled in good ol’ USA. 
> 

__
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 arch...@mail-archive.com 

[Elecraft] KPA 500 fault!

[Tom Doligalski via Elecraft]

My KPA500 has been working fine waited for 115 V. Just now it has been throwing 
a “25=70 VAC” fault!

Can anyone lead me in helping this? Fuses look good. HV read 0.1 v when in 
standby, which is FAR from the 70 some volts it used to read. 

Thanks!

Tom W4KX
__
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 arch...@mail-archive.com 

Re: [Elecraft] Coronavirus

[Nr4c]

You do realize that for every k-Line component you buy, you are pay a Chinese 
worker a few dollars a eeek to manufacture the ic’s, transistors, resistors, 
capacitors, and other parts that get assembled in good ol’ USA. 

Sent from my iPhone
...nr4c. bill


> On May 3, 2020, at 9:14 AM, Larry Boekeloo  wrote:
> 
> If there's one thing this "pandemic" has taught me.Buy American!
> 
> So glad I invested in the K-Line several years ago.
> 
> Larry, KN8N
> __
> 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 n...@widomaker.com 
__
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 arch...@mail-archive.com 

[Elecraft] Coronavirus

[Larry Boekeloo]

If there's one thing this "pandemic" has taught me.Buy American!

So glad I invested in the K-Line several years ago.

Larry, KN8N
__
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 arch...@mail-archive.com 

[Elecraft] Elecraft K3 for sale ...

[Oliver Dröse]

For sale in Germany (preferably) or Europe:

K3/100-F #8232    Factory Assembled, including:
KRX3    Sub RX module
KFL3A-2.7k    2.7 kHz Roofing Filter in Main RX
KFL3A-2.7k    2.7 kHz Roofing Filter in Sub RX (matched to main RX)
KFL3A-500    500 Hz Roofing Filter in Main RX
KFL3A-500    500 Hz Roofing Filter in Sub RX (matched to main RX)
KFL3B-FM    15 kHz AM/FM b/w Roofing Filter in Main RX
KXV3A    RX Ant / IF Out / Transverter Interface Board
K144XV    144-148 MHz 10 W Internal Transverter Modul Transverter
K144RFLK    Reflock-Board for Internal 2 m Transverter

Package & postage within Germany to be paid by me. To be negotiated for 
sale in Europe.


Highest bid wins. ;-)

73, Olli - DH8BQA

--

Contest, DX & radio projects: https://www.dh8bqa.de/


__
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 arch...@mail-archive.com