[Elecraft] Looking for K3/0 Mini and/or RRC

[Mitch Wolfson DJ0QN / K7DX]

A local OM here in Florida is looking for a K3/0 Mini and RemoteRig RRC 
(control unit only!). If you have either a complete set (K3/0 Mini + 
RRK0CBL + RRC/control), or part of a set (e.g. only RRC/control or K3/0 
Mini), please contact me off list. The OM is not on this reflector, so I 
will pass it on.


73,
Mitch K7DX

--
Mitch Wolfson  K7DX / DJ0QN
10285 Boca Cir, Naples, FL 34109
Skype: mitchwo
USA: Home:+1-239-221-9600 - Mobile:+1-424-288-9171
Germany: Home:+49 89 32152700 - Mobile/WhatsApp:+49 172 8374436

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[Elecraft] Elecraft CW Net Report

[kevinr]

Good Evening,

   Conditions for both nets were fairly good.  Some QSB but clear 
signals nonetheless.



  On 14050.75 kHz at 2200z:

K6XK - Roy - IA

W0CZ - Ken - ND

AB9V - Mike - IN

K4TO - Dave - KY

K6CN - Harv - CA


  On 7047 kHz at z:

W6JHB - Jim - CA

W0CZ - Ken - ND

K0DTJ - Brian - CA

K6PJV - Dale - CA

K6XK - Roy - IA

AE6JV - Bill - CA


   See you again next week,

  73,

 Kevin.  KD5ONS

-

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Re: [Elecraft] Less Than Perfect Antennas [was Flumoxed]

[David Gilbert]

It doesn't sound like you have a clue how WELL they work, though, 
relative to not using one at all or using one that has verified specs.  
Lots of stuff "works" but doesn't work as well as it should.  
Personally, I don't see the merit in preferring not to know, and it's a 
good thing for the rest of us that there are hams out there who have 
over the last hundred years tried to put science into our hobby.


Dave   AB7E


On 12/9/2018 6:15 PM, Bob McGraw K4TAX wrote:

I'm the one that made the recommendations.    Other than the two Balun
Designs units and the #8232 units from The Wireman being used with my
station..I don't know a darn thing about them other
than...they work.   I'm not using a 1115T balun. Measuring the
baluns and putting results on paper is one thing.  Putting them into a
station configuration and using them, as I have,  is another.    I
prefer the latter.

73

Bob, K4TAX



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Re: [Elecraft] Noise-cancelling Headphones Redux

[Dave Cole (NK7Z)]

Darn, I had to try...  I have an AL-1306, nice Amp, but not I suspect as 
nice as a KPA-500, or 1500...


73s and thanks,
Dave (NK7Z/NNR0DC)
https://www.nk7z.net
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon

On 12/9/18 7:30 PM, eric norris wrote:

Dear Dave:

I asked my KPA1500 if she wanted to be your KPA1500.

There was a slight shudder from her front cloven hooves.  She went to 
FAN 5, wailing like a banshee, and all the LEDs flashed "NO NO NO" in 
Morse--at 15wpm so she was sure even I could copy.


"It's OK, baby!," I screamed above her shrieking fans, "I will never 
leave you!"


The pigsty I call my shack grew quiet.  As I pressed her POWER button, 
she quivered slightly, and I swear the power LEDs all lit one last 
time--and bent up into a slight smile.


Nice try, though.

73 Eric WD6DBM


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Re: [Elecraft] Noise-cancelling Headphones Redux

[Gwen Patton]

I don't care WHO ya are, that stuff's funny...






...LORD, I apologize, and be with the orphans down there in New Guinea,
Amen.

On Sun, Dec 9, 2018 at 10:33 PM eric norris via Elecraft <
elecraft@mailman.qth.net> wrote:

> Dear Dave:
> I asked my KPA1500 if she wanted to be your KPA1500.
> There was a slight shudder from her front cloven hooves.  She went to FAN
> 5, wailing like a banshee, and all the LEDs flashed "NO NO NO" in Morse--at
> 15wpm so she was sure even I could copy.
> "It's OK, baby!," I screamed above her shrieking fans, "I will never leave
> you!"
> The pigsty I call my shack grew quiet.  As I pressed her POWER button, she
> quivered slightly, and I swear the power LEDs all lit one last time--and
> bent up into a slight smile.
> Nice try, though.
> 73 Eric WD6DBM
>
> That or your 1500 is filled with bad magic because it is supposed to be
> my KPA-1500 and it is mad at you.
>
> 73s and thanks,
> Dave (NK7Z/NNR0DC)
>
> Sent from Yahoo Mail on Android
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-- 

-+-+-+-+-
Jenny Everywhere's Infinite: Quark Time
http://quarktime.net
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[Elecraft] Noise-cancelling Headphones Redux

[eric norris via Elecraft]

Dear Dave:
I asked my KPA1500 if she wanted to be your KPA1500.  
There was a slight shudder from her front cloven hooves.  She went to FAN 5, 
wailing like a banshee, and all the LEDs flashed "NO NO NO" in Morse--at 15wpm 
so she was sure even I could copy.
"It's OK, baby!," I screamed above her shrieking fans, "I will never leave you!"
The pigsty I call my shack grew quiet.  As I pressed her POWER button, she 
quivered slightly, and I swear the power LEDs all lit one last time--and bent 
up into a slight smile.
Nice try, though.
73 Eric WD6DBM

That or your 1500 is filled with bad magic because it is supposed to be 
my KPA-1500 and it is mad at you.

73s and thanks,
Dave (NK7Z/NNR0DC)

Sent from Yahoo Mail on Android
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Re: [Elecraft] KX3 has died

[Walter Underwood]

That is the procedure for forcing a firmware load on page 25 of the manual.

ftp://ftp.elecraft.com/KX3/Manuals%20Downloads/E740163%20KX3%20Owner%27s%20man%20Rev%20C5.pdf
 


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

> On Dec 9, 2018, at 7:20 PM, Bob N3MNT  wrote:
> 
> If you have batteries in the KX3.  Remove one so it has no battery power. 
> Reboot the Mac .  Some time when an operation using the usb/serial ports
> hangs, the machine does not release the port.  Rebooting the pc/Mac should
> release everything and you can try again.  Did you use check Elecraft
> website for latest firmware to get the update.
> 
> 
> 
> 
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] KX3 has died

[Grant Youngman]

Did you unplug the cable, reboot the Mac, and then plug the radio cable back 
in?  Then start Utility again.   I also use a Mac, and I’ve had to do that 
(rarely) to convince the Mac to see the radio.  You can see it’s status if you 
do a System Report ..

Grant NQ5T
K3 #2091 KX3 #8342

> On Dec 9, 2018, at 10:11 PM, Dave Sublette  wrote:
> 
> OK -- time for a confession.  I'm updating using a MAC.  I don't think that
> has anything to do with the problem.  It has worked perfectly for four
> years.  Doesn't say that something couldn't have died.  But the MCU LD and
> flashing Tx LED on the KX3 says there is a firmware error and I don't think
> a failed interface cable or computer would cause that.
> 

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Re: [Elecraft] KX3 has died

[Bob N3MNT]

If you have batteries in the KX3.  Remove one so it has no battery power. 
Reboot the Mac .  Some time when an operation using the usb/serial ports
hangs, the machine does not release the port.  Rebooting the pc/Mac should
release everything and you can try again.  Did you use check Elecraft
website for latest firmware to get the update.




--
Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] KX3 has died

[Walter Underwood]

I use a Mac, too. 

If the cable failed during a download, the firmware could be corrupted.

I would try forcing the firmware load as described in the manual. I could be 
wrong, but this smells like a problem somewhere between the KX3 Utility and the 
data port on the KX3.

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

> On Dec 9, 2018, at 7:11 PM, Dave Sublette  wrote:
> 
> OK -- time for a confession.  I'm updating using a MAC.  I don't think that 
> has anything to do with the problem.  It has worked perfectly for four years. 
>  Doesn't say that something couldn't have died.  But the MCU LD and flashing 
> Tx LED on the KX3 says there is a firmware error and I don't think a failed 
> interface cable or computer would cause that.
> 
> I'm not a computer guru.  It will be interesting to see how this plays out.  
> Thanks to all for helping.  This is a knowledgeable and friendly group to 
> deal with.
> 
> Dave 
> 
> 
> 
> On Sun, Dec 9, 2018 at 10:04 PM Dick Dievendorff  > wrote:
> It might be the KXUSB.  Try different a USB hub on the computer if you have a 
> choice, or another computer if available.  
> 
> Sometimes windows updates change the COM port number, try the steps in Kx3 
> utility help for finding the right COM port. It might have been a while since 
> you last used the utility. 
> 
> 
> 73 de Dick, K6KR
> 
> > On Dec 9, 2018, at 18:52, Dave Sublette  > > wrote:
> > 
> > It is not looking good, folks.  The RS232 adapter which drives the KX3 is
> > not flashing any more as it usually does.  The KX3 Utility returns "KX3 not
> > responding" when I test the link.  All cables are properly connected.  It's
> > been working perfectly until earlier this evening.
> > 
> > I think it is due for a trip back to Elecraft.  I will call them tomorrow.
> > 
> > Thanks for the help.  I did find the Help column and the troubleshooting ,
> > etc
> > 
> > I had already done all of those steps and got nothing but the "not
> > responding" error.
> > 
> > I'll let everyone know what happens.
> > 
> > 73,
> > 
> > Dave, K4TO
> > 
> > On Sun, Dec 9, 2018 at 8:32 PM Walter Underwood  > >
> > wrote:
> > 
> >> I’m sure you have checked, but I would open it up and make sure the ribbon
> >> cables are fully seated. Then I’d check the cables to the PC. Probably
> >> restart the PC, too.
> >> 
> >> wunder
> >> K6WRU
> >> Walter Underwood
> >> CM87wj
> >> http://observer.wunderwood.org/  (my blog)
> >> 
> >>> On Dec 9, 2018, at 4:58 PM, Dave Sublette  >>> > wrote:
> >>> 
> >>> When I bring up the KX3 utility, there is no tab labeled Help or
> >>> Troubleshooting or MCU.  I now get a "KX3 is not responding" message.
> >>> 
> >>> Dave
> >>> 
>  On Sun, Dec 9, 2018 at 6:57 PM   > wrote:
>  
>  I'd recommend the steps described in KX3 Utility Help, Troubleshooting,
> >> MCU
>  Boot Loader.
>  
>  73 & Good Luck!
>  Dick, K6KR
>  
>  
>  -Original Message-
>  From: elecraft-boun...@mailman.qth.net 
>   <
> >> elecraft-boun...@mailman.qth.net >
>  On
>  Behalf Of Dave Sublette
>  Sent: Sunday, December 9, 2018 15:04
>  To: Elecraft Discussion List   >
>  Subject: [Elecraft] KX3 has died
>  
>  I believe my KX3 has died in the past 30 minutes.  It was operating with
>  N1MM prior to that.
>  
>  I went to the support page at Elecraft.com.
>  
>  I downloaded the latest KX3 Utility.
>  
>  I started the Firmware upgrade process.
>  
>  Initially the message said my KX3 was missing some files and to download
>  the
>  latest firmware.  I did that without any trouble.
>  
>  When I went to transfer the firmware to the KX3, I got a message that
> >> said
>  "KX3 failed to enter firmware load mode" (or something like that).
> >> Further
>  instructions said to remove power, power back up and try again.
>  
>  Same result.
>  
>  Tried the "force firmware upgrade"  by holding the Band- and ATU Tune
>  buttons down for 10 seconds.  The firmware load failed again -- same
> >> error
>  "KX3 failed to enter Firmware load mode".
>  
>  Meanwhile the front panel of the KX3 showed " MCU LD" during the entire
>  time.
>  
>  The com port tested good, using the KX3 utility.
>  
>  I don't know what else to try.
>  
>  Looks like the next step is to contact Elecraft support.
>  
>  Any thoughts?
>  
>  Dave, K4TO
>  
>  ps -- I think the KX3 is just pouting because I have ordered a new K3s
> >> :-)
>  __
>  Elecraft mailing list
>

Re: [Elecraft] KX3 has died

[Dave Sublette]

Oh -- one other thing I update with the KX3 utility on the MAC.  To
operate with N1MM I run Windows on the MAC, simultaneously, using the
Parallels software.  I have done this for more than four years using other
radios, but the KX3 for just the past four years.  The MAC runs Windows
7/64 and it is more stable than when I used a PC.

Dave

On Sun, Dec 9, 2018 at 10:11 PM Dave Sublette  wrote:

> OK -- time for a confession.  I'm updating using a MAC.  I don't think
> that has anything to do with the problem.  It has worked perfectly for four
> years.  Doesn't say that something couldn't have died.  But the MCU LD and
> flashing Tx LED on the KX3 says there is a firmware error and I don't think
> a failed interface cable or computer would cause that.
>
> I'm not a computer guru.  It will be interesting to see how this plays
> out.  Thanks to all for helping.  This is a knowledgeable and friendly
> group to deal with.
>
> Dave
>
>
>
> On Sun, Dec 9, 2018 at 10:04 PM Dick Dievendorff 
> wrote:
>
>> It might be the KXUSB.  Try different a USB hub on the computer if you
>> have a choice, or another computer if available.
>>
>> Sometimes windows updates change the COM port number, try the steps in
>> Kx3 utility help for finding the right COM port. It might have been a while
>> since you last used the utility.
>>
>>
>> 73 de Dick, K6KR
>>
>> > On Dec 9, 2018, at 18:52, Dave Sublette  wrote:
>> >
>> > It is not looking good, folks.  The RS232 adapter which drives the KX3
>> is
>> > not flashing any more as it usually does.  The KX3 Utility returns "KX3
>> not
>> > responding" when I test the link.  All cables are properly connected.
>> It's
>> > been working perfectly until earlier this evening.
>> >
>> > I think it is due for a trip back to Elecraft.  I will call them
>> tomorrow.
>> >
>> > Thanks for the help.  I did find the Help column and the
>> troubleshooting ,
>> > etc
>> >
>> > I had already done all of those steps and got nothing but the "not
>> > responding" error.
>> >
>> > I'll let everyone know what happens.
>> >
>> > 73,
>> >
>> > Dave, K4TO
>> >
>> > On Sun, Dec 9, 2018 at 8:32 PM Walter Underwood 
>> > wrote:
>> >
>> >> I’m sure you have checked, but I would open it up and make sure the
>> ribbon
>> >> cables are fully seated. Then I’d check the cables to the PC. Probably
>> >> restart the PC, too.
>> >>
>> >> wunder
>> >> K6WRU
>> >> Walter Underwood
>> >> CM87wj
>> >> http://observer.wunderwood.org/ (my blog)
>> >>
>> >>> On Dec 9, 2018, at 4:58 PM, Dave Sublette 
>> wrote:
>> >>>
>> >>> When I bring up the KX3 utility, there is no tab labeled Help or
>> >>> Troubleshooting or MCU.  I now get a "KX3 is not responding" message.
>> >>>
>> >>> Dave
>> >>>
>>  On Sun, Dec 9, 2018 at 6:57 PM  wrote:
>> 
>>  I'd recommend the steps described in KX3 Utility Help,
>> Troubleshooting,
>> >> MCU
>>  Boot Loader.
>> 
>>  73 & Good Luck!
>>  Dick, K6KR
>> 
>> 
>>  -Original Message-
>>  From: elecraft-boun...@mailman.qth.net <
>> >> elecraft-boun...@mailman.qth.net>
>>  On
>>  Behalf Of Dave Sublette
>>  Sent: Sunday, December 9, 2018 15:04
>>  To: Elecraft Discussion List 
>>  Subject: [Elecraft] KX3 has died
>> 
>>  I believe my KX3 has died in the past 30 minutes.  It was operating
>> with
>>  N1MM prior to that.
>> 
>>  I went to the support page at Elecraft.com.
>> 
>>  I downloaded the latest KX3 Utility.
>> 
>>  I started the Firmware upgrade process.
>> 
>>  Initially the message said my KX3 was missing some files and to
>> download
>>  the
>>  latest firmware.  I did that without any trouble.
>> 
>>  When I went to transfer the firmware to the KX3, I got a message that
>> >> said
>>  "KX3 failed to enter firmware load mode" (or something like that).
>> >> Further
>>  instructions said to remove power, power back up and try again.
>> 
>>  Same result.
>> 
>>  Tried the "force firmware upgrade"  by holding the Band- and ATU Tune
>>  buttons down for 10 seconds.  The firmware load failed again -- same
>> >> error
>>  "KX3 failed to enter Firmware load mode".
>> 
>>  Meanwhile the front panel of the KX3 showed " MCU LD" during the
>> entire
>>  time.
>> 
>>  The com port tested good, using the KX3 utility.
>> 
>>  I don't know what else to try.
>> 
>>  Looks like the next step is to contact Elecraft support.
>> 
>>  Any thoughts?
>> 
>>  Dave, K4TO
>> 
>>  ps -- I think the KX3 is just pouting because I have ordered a new
>> K3s
>> >> :-)
>>  __
>>  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 

Re: [Elecraft] KX3 has died

[Dave Sublette]

OK -- time for a confession.  I'm updating using a MAC.  I don't think that
has anything to do with the problem.  It has worked perfectly for four
years.  Doesn't say that something couldn't have died.  But the MCU LD and
flashing Tx LED on the KX3 says there is a firmware error and I don't think
a failed interface cable or computer would cause that.

I'm not a computer guru.  It will be interesting to see how this plays
out.  Thanks to all for helping.  This is a knowledgeable and friendly
group to deal with.

Dave



On Sun, Dec 9, 2018 at 10:04 PM Dick Dievendorff  wrote:

> It might be the KXUSB.  Try different a USB hub on the computer if you
> have a choice, or another computer if available.
>
> Sometimes windows updates change the COM port number, try the steps in Kx3
> utility help for finding the right COM port. It might have been a while
> since you last used the utility.
>
>
> 73 de Dick, K6KR
>
> > On Dec 9, 2018, at 18:52, Dave Sublette  wrote:
> >
> > It is not looking good, folks.  The RS232 adapter which drives the KX3 is
> > not flashing any more as it usually does.  The KX3 Utility returns "KX3
> not
> > responding" when I test the link.  All cables are properly connected.
> It's
> > been working perfectly until earlier this evening.
> >
> > I think it is due for a trip back to Elecraft.  I will call them
> tomorrow.
> >
> > Thanks for the help.  I did find the Help column and the troubleshooting
> ,
> > etc
> >
> > I had already done all of those steps and got nothing but the "not
> > responding" error.
> >
> > I'll let everyone know what happens.
> >
> > 73,
> >
> > Dave, K4TO
> >
> > On Sun, Dec 9, 2018 at 8:32 PM Walter Underwood 
> > wrote:
> >
> >> I’m sure you have checked, but I would open it up and make sure the
> ribbon
> >> cables are fully seated. Then I’d check the cables to the PC. Probably
> >> restart the PC, too.
> >>
> >> wunder
> >> K6WRU
> >> Walter Underwood
> >> CM87wj
> >> http://observer.wunderwood.org/ (my blog)
> >>
> >>> On Dec 9, 2018, at 4:58 PM, Dave Sublette  wrote:
> >>>
> >>> When I bring up the KX3 utility, there is no tab labeled Help or
> >>> Troubleshooting or MCU.  I now get a "KX3 is not responding" message.
> >>>
> >>> Dave
> >>>
>  On Sun, Dec 9, 2018 at 6:57 PM  wrote:
> 
>  I'd recommend the steps described in KX3 Utility Help,
> Troubleshooting,
> >> MCU
>  Boot Loader.
> 
>  73 & Good Luck!
>  Dick, K6KR
> 
> 
>  -Original Message-
>  From: elecraft-boun...@mailman.qth.net <
> >> elecraft-boun...@mailman.qth.net>
>  On
>  Behalf Of Dave Sublette
>  Sent: Sunday, December 9, 2018 15:04
>  To: Elecraft Discussion List 
>  Subject: [Elecraft] KX3 has died
> 
>  I believe my KX3 has died in the past 30 minutes.  It was operating
> with
>  N1MM prior to that.
> 
>  I went to the support page at Elecraft.com.
> 
>  I downloaded the latest KX3 Utility.
> 
>  I started the Firmware upgrade process.
> 
>  Initially the message said my KX3 was missing some files and to
> download
>  the
>  latest firmware.  I did that without any trouble.
> 
>  When I went to transfer the firmware to the KX3, I got a message that
> >> said
>  "KX3 failed to enter firmware load mode" (or something like that).
> >> Further
>  instructions said to remove power, power back up and try again.
> 
>  Same result.
> 
>  Tried the "force firmware upgrade"  by holding the Band- and ATU Tune
>  buttons down for 10 seconds.  The firmware load failed again -- same
> >> error
>  "KX3 failed to enter Firmware load mode".
> 
>  Meanwhile the front panel of the KX3 showed " MCU LD" during the
> entire
>  time.
> 
>  The com port tested good, using the KX3 utility.
> 
>  I don't know what else to try.
> 
>  Looks like the next step is to contact Elecraft support.
> 
>  Any thoughts?
> 
>  Dave, K4TO
> 
>  ps -- I think the KX3 is just pouting because I have ordered a new K3s
> >> :-)
>  __
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> 
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Re: [Elecraft] KX3 has died

[Dick Dievendorff]

It might be the KXUSB.  Try different a USB hub on the computer if you have a 
choice, or another computer if available.  

Sometimes windows updates change the COM port number, try the steps in Kx3 
utility help for finding the right COM port. It might have been a while since 
you last used the utility. 


73 de Dick, K6KR

> On Dec 9, 2018, at 18:52, Dave Sublette  wrote:
> 
> It is not looking good, folks.  The RS232 adapter which drives the KX3 is
> not flashing any more as it usually does.  The KX3 Utility returns "KX3 not
> responding" when I test the link.  All cables are properly connected.  It's
> been working perfectly until earlier this evening.
> 
> I think it is due for a trip back to Elecraft.  I will call them tomorrow.
> 
> Thanks for the help.  I did find the Help column and the troubleshooting ,
> etc
> 
> I had already done all of those steps and got nothing but the "not
> responding" error.
> 
> I'll let everyone know what happens.
> 
> 73,
> 
> Dave, K4TO
> 
> On Sun, Dec 9, 2018 at 8:32 PM Walter Underwood 
> wrote:
> 
>> I’m sure you have checked, but I would open it up and make sure the ribbon
>> cables are fully seated. Then I’d check the cables to the PC. Probably
>> restart the PC, too.
>> 
>> wunder
>> K6WRU
>> Walter Underwood
>> CM87wj
>> http://observer.wunderwood.org/ (my blog)
>> 
>>> On Dec 9, 2018, at 4:58 PM, Dave Sublette  wrote:
>>> 
>>> When I bring up the KX3 utility, there is no tab labeled Help or
>>> Troubleshooting or MCU.  I now get a "KX3 is not responding" message.
>>> 
>>> Dave
>>> 
 On Sun, Dec 9, 2018 at 6:57 PM  wrote:
 
 I'd recommend the steps described in KX3 Utility Help, Troubleshooting,
>> MCU
 Boot Loader.
 
 73 & Good Luck!
 Dick, K6KR
 
 
 -Original Message-
 From: elecraft-boun...@mailman.qth.net <
>> elecraft-boun...@mailman.qth.net>
 On
 Behalf Of Dave Sublette
 Sent: Sunday, December 9, 2018 15:04
 To: Elecraft Discussion List 
 Subject: [Elecraft] KX3 has died
 
 I believe my KX3 has died in the past 30 minutes.  It was operating with
 N1MM prior to that.
 
 I went to the support page at Elecraft.com.
 
 I downloaded the latest KX3 Utility.
 
 I started the Firmware upgrade process.
 
 Initially the message said my KX3 was missing some files and to download
 the
 latest firmware.  I did that without any trouble.
 
 When I went to transfer the firmware to the KX3, I got a message that
>> said
 "KX3 failed to enter firmware load mode" (or something like that).
>> Further
 instructions said to remove power, power back up and try again.
 
 Same result.
 
 Tried the "force firmware upgrade"  by holding the Band- and ATU Tune
 buttons down for 10 seconds.  The firmware load failed again -- same
>> error
 "KX3 failed to enter Firmware load mode".
 
 Meanwhile the front panel of the KX3 showed " MCU LD" during the entire
 time.
 
 The com port tested good, using the KX3 utility.
 
 I don't know what else to try.
 
 Looks like the next step is to contact Elecraft support.
 
 Any thoughts?
 
 Dave, K4TO
 
 ps -- I think the KX3 is just pouting because I have ordered a new K3s
>> :-)
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 Elecraft mailing list
 Home: http://mailman.qth.net/mailman/listinfo/elecraft
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 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html
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Re: [Elecraft] KX3 has died

[Walter Underwood]

That seems like a bad cable or the PC is not talking to the right port.

You might also want to look at the section “Forcing a Firmware Download” on 
page 25 of the KX3 manual.

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

> On Dec 9, 2018, at 6:52 PM, Dave Sublette  wrote:
> 
> It is not looking good, folks.  The RS232 adapter which drives the KX3 is not 
> flashing any more as it usually does.  The KX3 Utility returns "KX3 not 
> responding" when I test the link.  All cables are properly connected.  It's 
> been working perfectly until earlier this evening.
> 
> I think it is due for a trip back to Elecraft.  I will call them tomorrow.
> 
> Thanks for the help.  I did find the Help column and the troubleshooting , 
> etc
> 
> I had already done all of those steps and got nothing but the "not 
> responding" error.
> 
> I'll let everyone know what happens.
> 
> 73,
> 
> Dave, K4TO
> 
> On Sun, Dec 9, 2018 at 8:32 PM Walter Underwood  > wrote:
> I’m sure you have checked, but I would open it up and make sure the ribbon 
> cables are fully seated. Then I’d check the cables to the PC. Probably 
> restart the PC, too.
> 
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/  (my blog)
> 
> > On Dec 9, 2018, at 4:58 PM, Dave Sublette  > > wrote:
> > 
> > When I bring up the KX3 utility, there is no tab labeled Help or
> > Troubleshooting or MCU.  I now get a "KX3 is not responding" message.
> > 
> > Dave
> > 
> > On Sun, Dec 9, 2018 at 6:57 PM  > > wrote:
> > 
> >> I'd recommend the steps described in KX3 Utility Help, Troubleshooting, MCU
> >> Boot Loader.
> >> 
> >> 73 & Good Luck!
> >> Dick, K6KR
> >> 
> >> 
> >> -Original Message-
> >> From: elecraft-boun...@mailman.qth.net 
> >>  
> >>  >> >
> >> On
> >> Behalf Of Dave Sublette
> >> Sent: Sunday, December 9, 2018 15:04
> >> To: Elecraft Discussion List  >> >
> >> Subject: [Elecraft] KX3 has died
> >> 
> >> I believe my KX3 has died in the past 30 minutes.  It was operating with
> >> N1MM prior to that.
> >> 
> >> I went to the support page at Elecraft.com.
> >> 
> >> I downloaded the latest KX3 Utility.
> >> 
> >> I started the Firmware upgrade process.
> >> 
> >> Initially the message said my KX3 was missing some files and to download
> >> the
> >> latest firmware.  I did that without any trouble.
> >> 
> >> When I went to transfer the firmware to the KX3, I got a message that said
> >> "KX3 failed to enter firmware load mode" (or something like that).  Further
> >> instructions said to remove power, power back up and try again.
> >> 
> >> Same result.
> >> 
> >> Tried the "force firmware upgrade"  by holding the Band- and ATU Tune
> >> buttons down for 10 seconds.  The firmware load failed again -- same error
> >> "KX3 failed to enter Firmware load mode".
> >> 
> >> Meanwhile the front panel of the KX3 showed " MCU LD" during the entire
> >> time.
> >> 
> >> The com port tested good, using the KX3 utility.
> >> 
> >> I don't know what else to try.
> >> 
> >> Looks like the next step is to contact Elecraft support.
> >> 
> >> Any thoughts?
> >> 
> >> Dave, K4TO
> >> 
> >> ps -- I think the KX3 is just pouting because I have ordered a new K3s  :-)
> >> __
> >> 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...@elecraft.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 wun...@wunderwood.org 
> 
> __
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> Home: http://mailman.qth.net/mailman/listinfo/elecraft 
> 
> Help: http://mailman.qth.net/mmfaq.htm 

Re: [Elecraft] KX3 has died

[Dave Sublette]

It is not looking good, folks.  The RS232 adapter which drives the KX3 is
not flashing any more as it usually does.  The KX3 Utility returns "KX3 not
responding" when I test the link.  All cables are properly connected.  It's
been working perfectly until earlier this evening.

I think it is due for a trip back to Elecraft.  I will call them tomorrow.

Thanks for the help.  I did find the Help column and the troubleshooting ,
etc

I had already done all of those steps and got nothing but the "not
responding" error.

I'll let everyone know what happens.

73,

Dave, K4TO

On Sun, Dec 9, 2018 at 8:32 PM Walter Underwood 
wrote:

> I’m sure you have checked, but I would open it up and make sure the ribbon
> cables are fully seated. Then I’d check the cables to the PC. Probably
> restart the PC, too.
>
> wunder
> K6WRU
> Walter Underwood
> CM87wj
> http://observer.wunderwood.org/ (my blog)
>
> > On Dec 9, 2018, at 4:58 PM, Dave Sublette  wrote:
> >
> > When I bring up the KX3 utility, there is no tab labeled Help or
> > Troubleshooting or MCU.  I now get a "KX3 is not responding" message.
> >
> > Dave
> >
> > On Sun, Dec 9, 2018 at 6:57 PM  wrote:
> >
> >> I'd recommend the steps described in KX3 Utility Help, Troubleshooting,
> MCU
> >> Boot Loader.
> >>
> >> 73 & Good Luck!
> >> Dick, K6KR
> >>
> >>
> >> -Original Message-
> >> From: elecraft-boun...@mailman.qth.net <
> elecraft-boun...@mailman.qth.net>
> >> On
> >> Behalf Of Dave Sublette
> >> Sent: Sunday, December 9, 2018 15:04
> >> To: Elecraft Discussion List 
> >> Subject: [Elecraft] KX3 has died
> >>
> >> I believe my KX3 has died in the past 30 minutes.  It was operating with
> >> N1MM prior to that.
> >>
> >> I went to the support page at Elecraft.com.
> >>
> >> I downloaded the latest KX3 Utility.
> >>
> >> I started the Firmware upgrade process.
> >>
> >> Initially the message said my KX3 was missing some files and to download
> >> the
> >> latest firmware.  I did that without any trouble.
> >>
> >> When I went to transfer the firmware to the KX3, I got a message that
> said
> >> "KX3 failed to enter firmware load mode" (or something like that).
> Further
> >> instructions said to remove power, power back up and try again.
> >>
> >> Same result.
> >>
> >> Tried the "force firmware upgrade"  by holding the Band- and ATU Tune
> >> buttons down for 10 seconds.  The firmware load failed again -- same
> error
> >> "KX3 failed to enter Firmware load mode".
> >>
> >> Meanwhile the front panel of the KX3 showed " MCU LD" during the entire
> >> time.
> >>
> >> The com port tested good, using the KX3 utility.
> >>
> >> I don't know what else to try.
> >>
> >> Looks like the next step is to contact Elecraft support.
> >>
> >> Any thoughts?
> >>
> >> Dave, K4TO
> >>
> >> ps -- I think the KX3 is just pouting because I have ordered a new K3s
> :-)
> >> __
> >> Elecraft mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> 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 d...@elecraft.com
> >>
> >>
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>
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Re: [Elecraft] Less Than Perfect Antennas [was Flumoxed]

[Jim Brown]

On 12/9/2018 5:15 PM, Bob McGraw K4TAX wrote:

I don't know a darn thing about them other
than...they work. 


Define "they work." :) They don't blow up? You get signal through them 
to the antenna? They reduce common mode current? They reduce RX noise? 
You make QSOs with them in line? They make you feel good?


The REASON for using a common mode choke is to reduce common mode 
current. That can reduce noise a bit -- the part of it picked up on the 
feedline, and it can eliminate the part of TX RF coming into the shack 
on the feedline as common mode current. By my definition, if a choke 
does that, or can do that if there's noise, it works. If it doesn't do 
that, or can't d that, it's not working or it's not a good choke.


Chokes installed on antennas rarely make a large difference in noise -- 
a few dB is typical if your antenna is close to the noise source, it 
also picks up the noise. But if the antenna is far from the noise source 
and the feedline runs close to the source, the reduction can be more 
than a few dB. AND, when that DX you're trying to work is weak, that few 
dB can be the difference between copying him or not!


73, Jim K9YC

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Re: [Elecraft] AM operation of the K line

[W2xj]

It’s not the best idea to use RF filtering to limit audio bandwidth. 

Sent from my iPhone

> On Dec 9, 2018, at 17:43, Grant Youngman  wrote:
> 
> I don’t think the AM transmit bandwidth relies on the filter to set its 
> limits.  Even with the 13KHz filter, bandwidth is limited by the DSP.  The 
> option to use the 13KHz filter was, as I recall, a change made by Elecraft 
> quite some time ago.  While there are many opinions, there is no bandwidth 
> specified by 97.101(a), and at its worse, it’s tighter than most of the 
> vintage and other modern AM gear in use legally on the amateur bands.
> 
> Grant NQ5T
> K3 #2091 KX3 #8342
> 
>> On Dec 9, 2018, at 8:26 PM, Bob McGraw K4TAX  wrote:
>> 
>> Yes true, however I don't suggest using the 13 kHz filter for AM transmit in 
>> view of transmit bandwidth considerations.The 6 kHz filter is more 
>> appropriate and thus does limit the transmit bandwidth to the required 
>> limits of the regulations.  97.101(a)
>> 
> 
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Re: [Elecraft] AM Filters for sale

[Ron Freeman]

I have two Elecraft KFL3A-6K filters for sale for $100 each, including 
shipping.  The filters are new and in original unopened packaging as delivered 
by Elecraft.  

I also have a working PR6 available for $55 shipped conus.

73//k5mm/ron

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Re: [Elecraft] AM operation of the K line

[Grant Youngman]

I don’t think the AM transmit bandwidth relies on the filter to set its limits. 
 Even with the 13KHz filter, bandwidth is limited by the DSP.  The option to 
use the 13KHz filter was, as I recall, a change made by Elecraft quite some 
time ago.  While there are many opinions, there is no bandwidth specified by 
97.101(a), and at its worse, it’s tighter than most of the vintage and other 
modern AM gear in use legally on the amateur bands.

Grant NQ5T
K3 #2091 KX3 #8342

> On Dec 9, 2018, at 8:26 PM, Bob McGraw K4TAX  wrote:
> 
> Yes true, however I don't suggest using the 13 kHz filter for AM transmit in 
> view of transmit bandwidth considerations.The 6 kHz filter is more 
> appropriate and thus does limit the transmit bandwidth to the required limits 
> of the regulations.  97.101(a)
> 

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Re: [Elecraft] KX3 has died

[Walter Underwood]

I’m sure you have checked, but I would open it up and make sure the ribbon 
cables are fully seated. Then I’d check the cables to the PC. Probably restart 
the PC, too.

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

> On Dec 9, 2018, at 4:58 PM, Dave Sublette  wrote:
> 
> When I bring up the KX3 utility, there is no tab labeled Help or
> Troubleshooting or MCU.  I now get a "KX3 is not responding" message.
> 
> Dave
> 
> On Sun, Dec 9, 2018 at 6:57 PM  wrote:
> 
>> I'd recommend the steps described in KX3 Utility Help, Troubleshooting, MCU
>> Boot Loader.
>> 
>> 73 & Good Luck!
>> Dick, K6KR
>> 
>> 
>> -Original Message-
>> From: elecraft-boun...@mailman.qth.net 
>> On
>> Behalf Of Dave Sublette
>> Sent: Sunday, December 9, 2018 15:04
>> To: Elecraft Discussion List 
>> Subject: [Elecraft] KX3 has died
>> 
>> I believe my KX3 has died in the past 30 minutes.  It was operating with
>> N1MM prior to that.
>> 
>> I went to the support page at Elecraft.com.
>> 
>> I downloaded the latest KX3 Utility.
>> 
>> I started the Firmware upgrade process.
>> 
>> Initially the message said my KX3 was missing some files and to download
>> the
>> latest firmware.  I did that without any trouble.
>> 
>> When I went to transfer the firmware to the KX3, I got a message that said
>> "KX3 failed to enter firmware load mode" (or something like that).  Further
>> instructions said to remove power, power back up and try again.
>> 
>> Same result.
>> 
>> Tried the "force firmware upgrade"  by holding the Band- and ATU Tune
>> buttons down for 10 seconds.  The firmware load failed again -- same error
>> "KX3 failed to enter Firmware load mode".
>> 
>> Meanwhile the front panel of the KX3 showed " MCU LD" during the entire
>> time.
>> 
>> The com port tested good, using the KX3 utility.
>> 
>> I don't know what else to try.
>> 
>> Looks like the next step is to contact Elecraft support.
>> 
>> Any thoughts?
>> 
>> Dave, K4TO
>> 
>> ps -- I think the KX3 is just pouting because I have ordered a new K3s  :-)
>> __
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>> Message
>> delivered to d...@elecraft.com
>> 
>> 
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Re: [Elecraft] AM operation of the K line

[Bob McGraw K4TAX]

Yes true, however I don't suggest using the 13 kHz filter for AM 
transmit in view of transmit bandwidth considerations.    The 6 kHz 
filter is more appropriate and thus does limit the transmit bandwidth to 
the required limits of the regulations.  97.101(a)


73

Bob, K4TAX


On 12/9/2018 7:15 PM, Mark Musick wrote:

Or the 13 kHz filter. Both the 6 and 13 kHz filters can be used for AM.

73,
Mark, WB9CIF




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[Elecraft] Less Than Perfect Antennas [was Flumoxed]

[Bob McGraw K4TAX]

I'm the one that made the recommendations.    Other than the two Balun
Designs units and the #8232 units from The Wireman being used with my
station..I don't know a darn thing about them other
than...they work.   I'm not using a 1115T balun.   Measuring the
baluns and putting results on paper is one thing.  Putting them into a
station configuration and using them, as I have,  is another.    I
prefer the latter.

73

Bob, K4TAX



On 12/9/2018 12:47 PM, Jim Brown wrote:
I wonder if anyone using or recommending products like this have ever 
measured them.  They are not easy to measure.  You can't measure them 
accurately with a single-port antenna analyzer.


N6KT, a member of our contest club is building a station in the 
Caribbean and asked me to measure a Balun Designs 1115T common mode 
choke (often called a 1:1 current balun). It looks NOTHING like it's 
data sheet, which shows an approximately flat high choking impedance 
over the HF bands. It would be USELESS on 40, 80, and 160M! From what 
I've seen them write about chokes, I don't believe that they 
understand how common mode chokes work, and I certainly wouldn't 
suggest that someone ask them for advice.


The Wireman 8232 is based on W2DU's excellent work from many years 
ago. He built chokes with 50, 100, and 200 of the largest #73 
Fair-Rite beads that fit over RG142. This size bead of this material 
has the unique property of relatively constant choking impedance in 
the HF spectrum, but you have to a LOT of them.  Only the 200-bead 
choke has sufficient choking impedance to handle high power and kill 
receive noise, and that's what he recommended, yet most products sold 
as a "W2DU balun" have many fewer. The larger #31 cores are not useful 
at HF until you wind multiple turns through them, but are often sold 
for use as a string of beads on coax.


How many beads are in the 8232? Are they Fair-Rite #73?

73, Jim K9YC

On 12/9/2018 5:33 AM, Bob McGraw K4TAX wrote:
Balun Designs, both 1:1 and 4:1 for use with tuners.    I have both 
because I also have a folded dipole that I feed direct.


I suggest you give the folks at Balun Designs a call and discuss your 
exact needs.  Take their advice.

Also see the DJ0IP site for details on baluns.  Just Google DJ0IP.

And I use the 8232 common mode choke from The Wireman.



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Re: [Elecraft] AM operation of the K line

[Mark Musick]

Or the 13 kHz filter. Both the 6 and 13 kHz filters can be used for AM.

73,
Mark, WB9CIF

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Bob McGraw K4TAX
Sent: Monday, December 10, 2018 01:09
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] AM operation of the K line

Sure, works great.  As configured for SSB switching to AM mode runs about 125 
watts of carrier from the KPA500.   No different than operating SSB, just 
switch the K3S to AM.   Must have the 6 kHz filter installed.

73

Bob, K4TAX


On 12/9/2018 4:03 PM, Michael Blake via Elecraft wrote:
> Anyone have any experiences or suggestions for using the K3s, KPA500 and 
> KAT500 on 80 meter AM?
>
> 73 - Mike - K9JRI
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Re: [Elecraft] AM operation of the K line

[Bob McGraw K4TAX]

Sure, works great.  As configured for SSB switching to AM mode runs 
about 125 watts of carrier from the KPA500.   No different than 
operating SSB, just switch the K3S to AM.   Must have the 6 kHz filter 
installed.


73

Bob, K4TAX


On 12/9/2018 4:03 PM, Michael Blake via Elecraft wrote:

Anyone have any experiences or suggestions for using the K3s, KPA500 and KAT500 
on 80 meter AM?

73 - Mike - K9JRI
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Re: [Elecraft] KX3 has died

[Dave Sublette]

When I bring up the KX3 utility, there is no tab labeled Help or
Troubleshooting or MCU.  I now get a "KX3 is not responding" message.

Dave

On Sun, Dec 9, 2018 at 6:57 PM  wrote:

> I'd recommend the steps described in KX3 Utility Help, Troubleshooting, MCU
> Boot Loader.
>
> 73 & Good Luck!
> Dick, K6KR
>
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net 
> On
> Behalf Of Dave Sublette
> Sent: Sunday, December 9, 2018 15:04
> To: Elecraft Discussion List 
> Subject: [Elecraft] KX3 has died
>
> I believe my KX3 has died in the past 30 minutes.  It was operating with
> N1MM prior to that.
>
> I went to the support page at Elecraft.com.
>
> I downloaded the latest KX3 Utility.
>
> I started the Firmware upgrade process.
>
> Initially the message said my KX3 was missing some files and to download
> the
> latest firmware.  I did that without any trouble.
>
> When I went to transfer the firmware to the KX3, I got a message that said
> "KX3 failed to enter firmware load mode" (or something like that).  Further
> instructions said to remove power, power back up and try again.
>
> Same result.
>
> Tried the "force firmware upgrade"  by holding the Band- and ATU Tune
> buttons down for 10 seconds.  The firmware load failed again -- same error
> "KX3 failed to enter Firmware load mode".
>
> Meanwhile the front panel of the KX3 showed " MCU LD" during the entire
> time.
>
> The com port tested good, using the KX3 utility.
>
> I don't know what else to try.
>
> Looks like the next step is to contact Elecraft support.
>
> Any thoughts?
>
> Dave, K4TO
>
> ps -- I think the KX3 is just pouting because I have ordered a new K3s  :-)
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Re: [Elecraft] OT: G5RV antenna

[Martin Sole]

Made me laugh. I guess Reg had other designs :)

Martin, HS0ZED


On 09/12/2018 23:44, CUTTER DAVID via Elecraft wrote:

Sorry, I said Reg, should have said Louis
David G3UNA


On 09 December 2018 at 16:30 CUTTER DAVID via Elecraft 
 wrote:


In addition, Reg was designing in the era of valve output transmitters with 
built-in pi-tank matching system, so, it was possible to match on different 
bands.  I'm sure mine worked across 80 to 10m in those days.  For 80 to 10m 
these days I use a off-centre-fed dipole with hybrid choke/transformer at the 
feed point as designed by DJ0IP for minimum common mode current.
David G3UNA


On 08 December 2018 at 16:32 Ken G Kopp  wrote:


As I've already stated … I have a copy of the original Varney
RSGB article that describes the G5RV and plainly states that
it's a 20M only antenna.

Remember, it requires an antenna tuner …

Start with a dipole …

Keep the "magic" 32' length of 300 ohm feedline.

Delete the 68' of coax.

What's left?  A "normal" open wire fed dipole, better
known as a Zepp.

73!

Ken Kopp - K0PP

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Re: [Elecraft] KX3 has died

[kevinr]

So that's what happened.  You were weak, then strong, then gone. But I 
logged you and you cannot wiggle out of that.


   73,

  Kevin.  KD5ONS

-

On 12/9/18 3:03 PM, Dave Sublette wrote:

I believe my KX3 has died in the past 30 minutes.  It was operating with
N1MM prior to that.

I went to the support page at Elecraft.com.

I downloaded the latest KX3 Utility.

I started the Firmware upgrade process.

Initially the message said my KX3 was missing some files and to download
the latest firmware.  I did that without any trouble.

When I went to transfer the firmware to the KX3, I got a message that said
"KX3 failed to enter firmware load mode" (or something like that).  Further
instructions said to remove power, power back up and try again.

Same result.

Tried the "force firmware upgrade"  by holding the Band- and ATU Tune
buttons down for 10 seconds.  The firmware load failed again -- same error
"KX3 failed to enter Firmware load mode".

Meanwhile the front panel of the KX3 showed " MCU LD" during the entire
time.

The com port tested good, using the KX3 utility.

I don't know what else to try.

Looks like the next step is to contact Elecraft support.

Any thoughts?

Dave, K4TO

ps -- I think the KX3 is just pouting because I have ordered a new K3s  :-)
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Re: [Elecraft] OT: G5RV antenna

[Bill Frantz]

I kinda like my 160M coax fed half wave dipole. I can get 
something out of it on all bands with the K3 tuner, although 80M 
is very marginal. I have a couple of FT8 QSOs with Quebec on 6M 
using it, although the azimuth pattern looks like a porcupine.


However, for most purposes, my 8 band trapped vertical is better 
on the high bands.


73 Bill AE6JV

On 12/9/18 at 1:46 PM, d...@kj0f.com (Doug Person) wrote:

As many have said before - the 132' wire-fed doublet is the 
best overall, must versatile antenna you can erect.


---
Bill Frantz| "The only thing we have to   | Periwinkle
(408)356-8506  | fear is fear itself." - FDR  | 16345 
Englewood Ave
www.pwpconsult.com | Inaugural address, 3/4/1933  | Los Gatos, 
CA 95032


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[Elecraft] KX3 has died

[Dave Sublette]

I believe my KX3 has died in the past 30 minutes.  It was operating with
N1MM prior to that.

I went to the support page at Elecraft.com.

I downloaded the latest KX3 Utility.

I started the Firmware upgrade process.

Initially the message said my KX3 was missing some files and to download
the latest firmware.  I did that without any trouble.

When I went to transfer the firmware to the KX3, I got a message that said
"KX3 failed to enter firmware load mode" (or something like that).  Further
instructions said to remove power, power back up and try again.

Same result.

Tried the "force firmware upgrade"  by holding the Band- and ATU Tune
buttons down for 10 seconds.  The firmware load failed again -- same error
"KX3 failed to enter Firmware load mode".

Meanwhile the front panel of the KX3 showed " MCU LD" during the entire
time.

The com port tested good, using the KX3 utility.

I don't know what else to try.

Looks like the next step is to contact Elecraft support.

Any thoughts?

Dave, K4TO

ps -- I think the KX3 is just pouting because I have ordered a new K3s  :-)
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[Elecraft] AM operation of the K line

[Michael Blake via Elecraft]

Anyone have any experiences or suggestions for using the K3s, KPA500 and KAT500 
on 80 meter AM? 

73 - Mike - K9JRI
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Re: [Elecraft] OT: G5RV antenna

[Doug Person]

I experimented with a G5RV. I did not have worth while results. A simple 
dipole with a quality current balun easily outperformed it. I also tried 
the "Mystery Antenna" - a joke. Measurements were down to a millimeter. 
It was up for an hour then was scrapped. I did have "acceptable" results 
with the G5RV in that my Differential-T tuner could load it on 40 
through 10 quite easily.


My next test was a 132' doublet fed with 40' of good quality 300 ohm 
twin lead into an excellent 1:1 current balun with 10' of RG/213 into my 
tuner. Tunes 160 through 10 with my Diff-T tuner. Signal reports were 
outstanding on 40 and easily a match for the dipole on 20. Nothing 
surprising about these results.


As many have said before - the 132' wire-fed doublet is the best 
overall, must versatile antenna you can erect.


73, Doug -- KJ0F

On 12/9/2018 12:52 PM, Bob McGraw K4TAX wrote:
From my experience, more folks should pay attention to the antenna and 
balun work done by DJ0IP.    They would likely have better performing 
antennas.  His work is proven on antennas and not text book or 
computer models, but indeed he provides real world results.


73

Bob, K4TAX


On 12/9/2018 10:30 AM, CUTTER DAVID via Elecraft wrote:
In addition, Reg was designing in the era of valve output 
transmitters with built-in pi-tank matching system, so, it was 
possible to match on different bands.  I'm sure mine worked across 80 
to 10m in those days.  For 80 to 10m these days I use a 
off-centre-fed dipole with hybrid choke/transformer at the feed point 
as designed by DJ0IP for minimum common mode current.

David G3UNA


On 08 December 2018 at 16:32 Ken G Kopp  wrote:


As I've already stated … I have a copy of the original Varney
RSGB article that describes the G5RV and plainly states that
it's a 20M only antenna.

Remember, it requires an antenna tuner …

Start with a dipole …

Keep the "magic" 32' length of 300 ohm feedline.

Delete the 68' of coax.

What's left?  A "normal" open wire fed dipole, better
known as a Zepp.

73!

Ken Kopp - K0PP

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[Elecraft] 6M Meteor scatter

[Ken Roberson via Elecraft]

In 2005 I worked MS on 6 Meter and had a blast.This morning thought I would 
give it a try with low powerK3 @ 70 watts with 5el yagi made 4 QSO's
Thanks 73 all Ken K5DNL
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Re: [Elecraft] Noise-cancelling headphones mystery

[K9MA]

I find my RS60 to be comfortable, but sometimes wish they had a cooling system. 

73,
Scott K9MA 

--

Scott Ellington. K9MA

 --- via iPhone

> On Dec 9, 2018, at 12:34 PM, Grant Youngman  wrote:
> 
> I find the RS60 very comfortable for long periods.  I know others who do, and 
> others that don’t.  I have adjusted mine for ME.  Which could lead someone 
> else to find my specific headset uncomfortable (too tight, too loose) for 
> THEM.  You’re certainly right that the comfort of any headset is a very 
> personal thing.  I’ve tried more than one headset that came highly 
> recommended, "most comfortable ever", and they just gave me a headache. 
> 
> Grant NQ5T
> K3 #2091 KX3 #8342
> 
>> 
>> 
>> K9MA says that Radio Sport headphones effectively kill the sound. I have no 
>> problem believing that -- they're designed for use in high noise 
>> environments. But don't buy a pair until you've tried them on -- headphone 
>> comfort is a VERY individual thing that depends on the shape of our heads. 
>> Some contesting friends like them, so I've tried them on at several 
>> hamfests, and found them an instrument of torture. I couldn't imagine 
>> wearing them for even a few hours.
>> 
>> 73, Jim K9YC
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Re: [Elecraft] KPA500 - No RF Amplification in Operate on 20M (WU6R - Mark)

[Bob McGraw K4TAX]

I trust you have the configuration set as displayed on page 5, Figure 1 
of the KAT500 manual.  And that you have the K3S configured so as to 
have the VFO tracking set to ON.  See page 60 of the K3S manual under 
KAT3.   Select 1 to set to KAT500Y.


I would also suggest that in AUTO mode you allow the KAT500 to resolve a 
match on your 20M frequency and antenna.   Otherwise, set the KAT500 to 
MAN mode which will automatically select stored matched values.  This is 
the preferred operating mode after one "trains" the KAT500 for various 
frequencies and antennas.


FYI - I have the same station configuration plus the P3.

73

Bob, K4TAX



On 12/9/2018 12:35 PM, Mark Wheeler via Elecraft wrote:
I was operating on 40M today with my ~2 month old KPA500/KAT500 combo 
and as the 40M band faded, I switched over to 20M.  Operating the 
KPA500 in "Operate" mode and the KAT500 in "Auto" with no KPA or KAT 
faults (confirmed by front panels and KPA500/KAT500 utilities), with 
15w dialed in at the K3S, I am only getting 6.77W out of the KPA500.  
While operating on 40M, I was getting 475W out with 15W in.  This 
would be my first time to operate on 20M with the KPA500/KAT500 so I 
imagine I've got a setting I need to change...  Any thoughts or help 
is greatly appreciated.  Thank you in advance...  (I really love my 
K3S/KPA500/KAT500 combo!)


73,
Mark
WU6R
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Re: [Elecraft] OT: G5RV antenna

[Bob McGraw K4TAX]

From my experience, more folks should pay attention to the antenna and 
balun work done by DJ0IP.    They would likely have better performing 
antennas.  His work is proven on antennas and not text book or computer 
models, but indeed he provides real world results.


73

Bob, K4TAX


On 12/9/2018 10:30 AM, CUTTER DAVID via Elecraft wrote:

In addition, Reg was designing in the era of valve output transmitters with 
built-in pi-tank matching system, so, it was possible to match on different 
bands.  I'm sure mine worked across 80 to 10m in those days.  For 80 to 10m 
these days I use a off-centre-fed dipole with hybrid choke/transformer at the 
feed point as designed by DJ0IP for minimum common mode current.
David G3UNA


On 08 December 2018 at 16:32 Ken G Kopp  wrote:


As I've already stated … I have a copy of the original Varney
RSGB article that describes the G5RV and plainly states that
it's a 20M only antenna.

Remember, it requires an antenna tuner …

Start with a dipole …

Keep the "magic" 32' length of 300 ohm feedline.

Delete the 68' of coax.

What's left?  A "normal" open wire fed dipole, better
known as a Zepp.

73!

Ken Kopp - K0PP

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[Elecraft] Elecraft SSB Net for December 9, 2018

[Jim White NC0JW]

Eric, WB9JNZ, our normal able bodied net control station was AWOL this week.  
Rumor has it he was off flying his RC aircraft.  Without his guidance we 
somehow managed to stumble through the Sunday morning Elecraft SSB net.  With 
relay the help from Steve WM6P, Brian K1NW, Phil NS7P, and Roger N4NWR 28 check 
ins were heard and even Peter ZL1PWD was able to appease the propagation Gods 
from New Zealand.

Today's check ins included:

WM6PSteve   GA  K3S 11453
NS7PPhilOR  K3  1826
K1NWBrian   RI  K3  4947
K6FWFrank   CA  K3S 11672
W1NGA   Al  CO  K3  5765
N7BDL   Terry   AZ  K3S 10373
AE6JV   BillCA  K3  6299
N6PGQ   Bob CA  K3  5891
KS6FGuy CA  K3S 10650
W7QHD   KurtAZ  K2  1538
NS7PPhilOR  K3  1826
KE7HGE  Ken WA  KX3 4540
N0EHQ   Ed  IA  K3  242
W4DML   DougTN  K3  6433
N4PLWaltGA  K3  8064
K7JGJohnWA  K3  3519
ZL1PWD  Peter   NZ  K3  139
W2APF   Thaire  NH  K3S 11656
N0MPM   MikeIA  K3S 10514
W3REM   Bob CO  Yaesu FT-991A
AD1GDickMA  KX3 10591
N4NRW   Roger   SC  K3  1318
AB9VMikeIN  K3S 11750
WW4JF   JohnTN  Icom 7000 (K3S 11177)
W0LMK   Le Roy  TX  K3  6878
AB5SI   Jim CO  Ten-Tec 540
VE7MRP  Dan BC  Yaesy FT-1000D
NC0JW   Jim CO  KX3 1356

As a reminder the Elecraft SSB Net meets every Sunday at 1800 UTC on or about 
14.3035 MHz.  Our Net Control Station is Eric, WB9JNZ, in Chicago, IL.  With 
Propagation being a bit tricky these days we employ several relay stations 
located through out the continental USA.  As conditions permit we take 
questions and comments after our check ins. 

73

Jim White - NC0JW







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Re: [Elecraft] Noise-cancelling headphones mystery

[Grant Youngman]

I find the RS60 very comfortable for long periods.  I know others who do, and 
others that don’t.  I have adjusted mine for ME.  Which could lead someone else 
to find my specific headset uncomfortable (too tight, too loose) for THEM.  
You’re certainly right that the comfort of any headset is a very personal 
thing.  I’ve tried more than one headset that came highly recommended, "most 
comfortable ever", and they just gave me a headache. 

Grant NQ5T
K3 #2091 KX3 #8342

> 
> 
> K9MA says that Radio Sport headphones effectively kill the sound. I have no 
> problem believing that -- they're designed for use in high noise 
> environments. But don't buy a pair until you've tried them on -- headphone 
> comfort is a VERY individual thing that depends on the shape of our heads. 
> Some contesting friends like them, so I've tried them on at several hamfests, 
> and found them an instrument of torture. I couldn't imagine wearing them for 
> even a few hours.
> 
> 73, Jim K9YC
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Re: [Elecraft] Noise-cancelling headphones mystery

[Jim Brown]

On 12/9/2018 8:40 AM, CUTTER DAVID via Elecraft wrote:

Noise cancelling that I've come across is limited to low/medium frequencies.


Yes. Others have correctly identified the reason, but I'll go into a bit 
of detail for clarity. Noise cancellation works by amplifying a tiny mic 
on the outside of an earphone and feeding it to the headphones so that 
the acoustic output is out of polarity with the noise that is 
acoustically coupled to the ear. For deep cancellation, the sound from 
the mic and the sound that reaches the ear directly must be of precisely 
the same amplitude AND precisely the same phase (but out of polarity).


This is particularly difficult to achieve, because 1) the headphones 
themselves attenuate the direct coupling of the noise to the ear, and 
that attenuation is not flat, and it varies depending on subtle 
differences in how the earphones fit/seal to the listener's head; 2) 
Phase is a variable, not a constant, and increases in direct proportion 
both to frequency and the distance that sound travels. 3) The small 
distance between the noise-sensing mic and the ear results in phase 
shift that increases with frequency. 4) The earphones themselves have 
non-flat phase response. 5) Directivity of both the microphone and the 
ear covered by the headphone is another variable.


The above leads to these conclusions. 1) Low frequency noise is far 
easier to cancel than higher frequency noise. Noise produced by fans in 
the KPA1500 has significant higher frequency spectra. 2) Extreme care is 
needed in the design of noise cancelling headphones. I would expect 
products of serious audio companies like Sennheiser and Bose to be 
better performers. 3) I would expect to see new designs using DSP to 
introduce delay to reduce the time difference resulting from mic 
placement and equalization for non-flat amplitude and phase response of 
the total system.


K9MA says that Radio Sport headphones effectively kill the sound. I have 
no problem believing that -- they're designed for use in high noise 
environments. But don't buy a pair until you've tried them on -- 
headphone comfort is a VERY individual thing that depends on the shape 
of our heads. Some contesting friends like them, so I've tried them on 
at several hamfests, and found them an instrument of torture. I couldn't 
imagine wearing them for even a few hours.


73, Jim K9YC

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[Elecraft] Noise Cancelling head phones

[Arthur Nienhouse]

*/NCT PA3500 looking for a new home ..

I have an excellent NCT proACTIVE PA3500 Active Noise Reduction head phone
each ear has large over the ear cover with Speaker and a Mic inside.

The NCT Active noise canceling is powered by a 3.6 volt Nickel Cadmium 
battery. Two battery's with charger, Heil 5 mic element on a boom arm.


Passive Noise Reduction by the design of the ear cups, head set like new
condition. I used for many years chasing weak signal they are very good.

Any interest please contact me by e-mail with phone number and a time to 
call,
pictures available price is negotiable shipping to USA via USPS Priority 
Mail.


http://forums.qrz.com/index.php?threads/proactive-pa3500-noise-reduction-head-set-by-nct-clearspeach.501238/

Regards
Art
ka9zap
/*
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Re: [Elecraft] Less Than Perfect Antennas [was Flumoxed]

[Fred Jensen]

Robert: Yes, most of the radiation from a conductor originates in the 
high current section(s) of the conductor, and for a half-wave dipole, 
that's the center, low impedance part.  The sag will lower the center, 
ergo the "gain" will decrease.  Whether or not it's enough to be 
noticeable is questionable however, and may be off-set by the losses in 
transforming the balanced line to unbalanced and the impedance 
transformation required.  At some point in all this discussion, you will 
find yourself trying to pick the fly poop out of the pepper [military 
expression which I've cleaned up a little for this forum].


Related:  The voltage/current distribution on a conductor is determined 
*only* by the length of the conductor measured in wavelengths.  It 
doesn't matter how or where you inject the RF current.  A Buddipole in a 
horizontal configuration is off-center fed because it is inherently 
physically short and low, and the center impedance is also low ... 
~20-30 ohms on 20 meters.  Moving the feed point out toward one end 
raises the impedance seen by the 50 ohm transmission line.  It also 
unbalances the entire system leading to undesirable current on the outer 
surface of the coax shield conductor.


And, to the original subject I assigned to this thread, how many 
remember the Windom feed that Novices, who couldn't afford transmission 
line, used in the 50's.  Definitely "Less Than Perfect" but there are 
QSO's in my log using it.


73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County

On 12/8/2018 7:03 PM, Robert G Strickland wrote:

Ron...

Would such an antenna cut for 80m, fed with ladder-line, and used on 
40m, be a better performer on either band than an 80-40m fan dipole 
fed with 72ohm coax? Leaving all other extraneous but influencing 
parameters aside. I have the second antenna; the weight of all that 
wire and the coax with a ferrite balun results in a significant sag. 
I'm wondering if the first antenna, lighter and higher in the air, 
would perform better? Thanks.


...robert



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Re: [Elecraft] Less Than Perfect Antennas [was Flumoxed]

[Jim Brown]

I wonder if anyone using or recommending products like this have ever 
measured them.  They are not easy to measure.  You can't measure them 
accurately with a single-port antenna analyzer.


N6KT, a member of our contest club is building a station in the 
Caribbean and asked me to measure a Balun Designs 1115T common mode 
choke (often called a 1:1 current balun). It looks NOTHING like it's 
data sheet, which shows an approximately flat high choking impedance 
over the HF bands. It would be USELESS on 40, 80, and 160M! From what 
I've seen them write about chokes, I don't believe that they understand 
how common mode chokes work, and I certainly wouldn't suggest that 
someone ask them for advice.


The Wireman 8232 is based on W2DU's excellent work from many years ago. 
He built chokes with 50, 100, and 200 of the largest #73 Fair-Rite beads 
that fit over RG142. This size bead of this material has the unique 
property of relatively constant choking impedance in the HF spectrum, 
but you have to a LOT of them.  Only the 200-bead choke has sufficient 
choking impedance to handle high power and kill receive noise, and 
that's what he recommended, yet most products sold as a "W2DU balun" 
have many fewer. The larger #31 cores are not useful at HF until you 
wind multiple turns through them, but are often sold for use as a string 
of beads on coax.


How many beads are in the 8232? Are they Fair-Rite #73?

73, Jim K9YC

On 12/9/2018 5:33 AM, Bob McGraw K4TAX wrote:

Balun Designs, both 1:1 and 4:1 for use with tuners.I have both because I 
also have a folded dipole that I feed direct.

I suggest you give the folks at Balun Designs a call and discuss your exact 
needs.  Take their advice.
Also see the DJ0IP site for details on baluns.  Just Google DJ0IP.

And I use the 8232 common mode choke from The Wireman.


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[Elecraft] KPA500 - No RF Amplification in Operate on 20M (WU6R - Mark)

[Mark Wheeler via Elecraft]

I was operating on 40M today with my ~2 month old KPA500/KAT500 combo and as the 40M band faded, I 
switched over to 20M.  Operating the KPA500 in "Operate" mode and the KAT500 in 
"Auto" with no KPA or KAT faults (confirmed by front panels and KPA500/KAT500 utilities), 
with 15w dialed in at the K3S, I am only getting 6.77W out of the KPA500.  While operating on 40M, 
I was getting 475W out with 15W in.  This would be my first time to operate on 20M with the 
KPA500/KAT500 so I imagine I've got a setting I need to change...  Any thoughts or help is greatly 
appreciated.  Thank you in advance...  (I really love my K3S/KPA500/KAT500 combo!)

73,
Mark
WU6R
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Re: [Elecraft] Noise-cancelling headphones mystery

[Jack Spitznagel]

See if you can borrow a hi quality aviation noise cancelling headset to try 
out. I have the now discontinued Sennheiser S1’s which work extremely well in 
many situations including with a single engine open cockpit aircraft, riding 
mowers, tractors, field day, etc. They have the added nicety of high quality 
adaptive noise cancelling and efficient noise cancelling the mic audio as well. 
Don’t look for “Heil Hi Fidelity” response of the mic. You will sound like you 
are on an aircraft radio but they cancel noise better than anything I have 
tested.

There a number of sets out there that probably perform at that level. David 
Clark, Bose, Lightspeed and others... I just happened on to a great deal for 
the Sennheisers. All run above the $500 mark retail...

KD4IZ 

Sent from my iPhone

> On Dec 9, 2018, at 11:40, CUTTER DAVID  wrote:
> 
> Noise cancelling that I've come across is limited to low/medium frequencies.  
> If your hearing takes you higher, the noise-cancelling has finished by then.  
> This is probably not the ability of the sensing mic but the circuitry and/or 
> room acoustics, echo, etc.  I'm a little out of date on the subject but 
> that's probably the essence of it.
> David G3UNA
> 
>> On 09 December 2018 at 15:26 "Dave Cole (NK7Z)"  wrote:
>> 
>> 
>> As a guess, I would say the response of the mic used to derive the phase 
>> canceling audio does not adequately cover the audio noise spectrum of 
>> the 1500 puts out...  Thus it can't phase cancel very well...
>> 
>> That or your 1500 is filled with bad magic because it is supposed to be 
>> my KPA-1500 and it is mad at you.
>> 
>> 73s and thanks,
>> Dave (NK7Z/NNR0DC)
>> https://www.nk7z.net
>> ARRL Technical Specialist
>> ARRL Volunteer Examiner
>> ARRL OOC for Oregon
>> 
>>> On 12/9/18 5:16 AM, eric norris via Elecraft wrote:
>>> I have owned a pair of Heil noise-cancelling headphones for many years.  
>>> They worked very well to reduce the noise of my old AL-1200 amplifier, and 
>>> the 5 fans on my cantankerous man-killer Henry 2002A EME amplifier.  
>>> However, they are completely ineffective against the KPA1500.  I bought a 
>>> pair of Bose noise-cancelling headphones recently, and they work much 
>>> better but are a bit tinny and eat batteries.
>>> My question for the audio experts on this list is why don't the Heils work 
>>> with the KPA1500?  Does anyone have a recommendation for a pair of really 
>>> good noise-cancelling headphones with a more flat response?
>>> 73 Eric WD6DBM
>>> 
>>> Sent from Yahoo Mail on Android
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>>> Message delivered to d...@nk7z.net
>>> 
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> 
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Re: [Elecraft] K3 Fan Control Command?

[Bill Stravinsky via Elecraft]

 The K3 gets warm (very warm actually) just sitting there without xmitting, hi. 
 Especially the right side closer to the front.  That is just normal.  That was 
in a post many months ago.
BillK3WJV

On Sunday, December 9, 2018, 6:51:38 AM EST, eric norris via Elecraft 
 wrote:  
 
 Has there been any thought given to adding a fan control command to the 
K3/K3S?  It would be nice to get some cool air inside the radio after repeated  
extended digital transmissions below 12 watts.  The radio gets very warm.
73 Eric WD6DBM

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Re: [Elecraft] Installing KBPF3MDKT MOD FOR LOW FREQ CUTOFF

[hawley, charles j jr]

That's a good reason! Fred might state this somewhere in his manual. I may have 
missed it, I just received it and was browsing thru having already done 
everything except the LPF since I do not have the new synths..

Thank you.


Chuck Hawley
 c-haw...@illinois.edu

 Amateur Radio, KE9UW
 aka Jack, BMW Motorcycles

From: Don Wilhelm 
Sent: Sunday, December 9, 2018 11:40:49 AM
To: hawley, charles j jr; elecraft@mailman.qth.net
Subject: Re: [Elecraft] Installing KBPF3MDKT MOD FOR LOW FREQ CUTOFF

The KBPF3A extends the low frequency that the bandpass filter can go.
However, the K3 without the new synthesizers cannot tune that low.

So if you want to get to the low frequency bands, you need both.

You certainly can put the mod kit on the KBPF3, but you cannot take
advantage of the extended low range unless you upgrade the synthesizer.
The synth change is not required unless you want the extended range.

73,
Don W3FPR

On 12/9/2018 12:10 PM, ke9uw wrote:
> The Elecraft site states the new Synthesizer KSYN3A is required to modify the
> original KBPF3 to KBPF3A specifications.
> However, Fred Cady's book, "Upgrading the Elecraft K3 with K3s Components"
> does not make this requirement for the KBPF3 to 3A modification.
>
> Why does Elecraft require the KSYN3A and Fred Cady not require it for this
> band pass filter mod?
> Anybody have insight on this?
>
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Re: [Elecraft] Installing KBPF3MDKT MOD FOR LOW FREQ CUTOFF

[Don Wilhelm]

The KBPF3A extends the low frequency that the bandpass filter can go. 
However, the K3 without the new synthesizers cannot tune that low.


So if you want to get to the low frequency bands, you need both.

You certainly can put the mod kit on the KBPF3, but you cannot take 
advantage of the extended low range unless you upgrade the synthesizer.

The synth change is not required unless you want the extended range.

73,
Don W3FPR

On 12/9/2018 12:10 PM, ke9uw wrote:

The Elecraft site states the new Synthesizer KSYN3A is required to modify the
original KBPF3 to KBPF3A specifications.
However, Fred Cady's book, "Upgrading the Elecraft K3 with K3s Components"
does not make this requirement for the KBPF3 to 3A modification.

Why does Elecraft require the KSYN3A and Fred Cady not require it for this
band pass filter mod?
Anybody have insight on this?


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Re: [Elecraft] Noise-cancelling headphones mystery

[Grant Youngman]

I fully agree with your comment on the Radiosport.  Great headphones, virtually 
noise free, and on a price par with the better noise cancelling Bose/etc.  Of 
course, when I have mine on, my wife has to kick the chair or slap my head to 
get my attention.  Which may not be all bad?  :-)

Grant NQ5T
K3 #2091 KX3 #8342

> On Dec 9, 2018, at 11:15 AM, K9MA  wrote:
> 
> No noise canceling headphones will be effective against the high frequency 
> noise of the KPA1500 fans. However, passive headphones can be very effective. 
> The Radiosport makes the fans nearly inaudible. Not cheap, but neither is the 
> KPA1500. 
> 

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[Elecraft] Elecraft CW Net Announcement

[Sheridan Bridge]

Thanks Kevin and others who responded to my question about the SSB net. 

73,
Guy WB7SZI 

Sent from my iPhone
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Re: [Elecraft] Noise-cancelling headphones mystery

[David Woolley]

Noise cancelling headphones rely on the distance between microphone and 
ear being a small fraction of the audio wavelength.  At high 
frequencies, that will be impossible to achieve, and, even if you put in 
a compensating delay, the path to the  ear is going to depend on the 
direction of the source.


--
David Woolley
Owner K2 06123.

On 09/12/2018 16:40, CUTTER DAVID wrote:

ncies.  If your hearing takes you higher, the noise-cancelling has finished by 
then.  This is probably not the ability of the sensing mic but the circuitry 
and/or room acoustics, echo, etc.  I'm a little out of date on the subject but 
that's probably the essence of it


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[Elecraft] Installing KBPF3MDKT MOD FOR LOW FREQ CUTOFF

[ke9uw]

The Elecraft site states the new Synthesizer KSYN3A is required to modify the
original KBPF3 to KBPF3A specifications. 
However, Fred Cady's book, "Upgrading the Elecraft K3 with K3s Components"
does not make this requirement for the KBPF3 to 3A modification. 

Why does Elecraft require the KSYN3A and Fred Cady not require it for this
band pass filter mod?
Anybody have insight on this?



-
Chuck, KE9UW
--
Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] External Display Freezes after Delay

[Don Wilhelm]

Terry,

Since you built the P3 you should have no fear of going inside it.
Check all the connections for the SVGA option and make certain the 
cables are dressed as indicated in the manual and the connectors fully 
seated.


73,
Don W3FPR

On 12/9/2018 9:54 AM, brenntl wrote:

I have a nuisance issue with the P3 and an external display. When I apply
13.8VDC to the K3 and P3 simultaneously (P3 POWER button must be pushed to
turn on the P3), the external display displays the image first followed by
the image on the P3. This all appears to be normal operation.
Thirty seconds after the image appears on the external display, the display
image freezes and remains frozen and the image on the P3 remains normal. If
I then turn the P3 POWER BUTTON off for a few seconds and then turn it back
on, the image reappears and remains working on the P3 and the external
monitor until I power the whole system down. This sequence of events is very
repeatable, including the time it takes the external display to freeze, and
has done this since I first built the P3.

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Re: [Elecraft] OT: G5RV antenna

[CUTTER DAVID via Elecraft]

Sorry, I said Reg, should have said Louis
David G3UNA

> On 09 December 2018 at 16:30 CUTTER DAVID via Elecraft 
>  wrote:
> 
> 
> In addition, Reg was designing in the era of valve output transmitters with 
> built-in pi-tank matching system, so, it was possible to match on different 
> bands.  I'm sure mine worked across 80 to 10m in those days.  For 80 to 10m 
> these days I use a off-centre-fed dipole with hybrid choke/transformer at the 
> feed point as designed by DJ0IP for minimum common mode current.
> David G3UNA
> 
> > On 08 December 2018 at 16:32 Ken G Kopp  wrote:
> > 
> > 
> > As I've already stated … I have a copy of the original Varney
> > RSGB article that describes the G5RV and plainly states that
> > it's a 20M only antenna.
> > 
> > Remember, it requires an antenna tuner …
> > 
> > Start with a dipole …
> > 
> > Keep the "magic" 32' length of 300 ohm feedline.
> > 
> > Delete the 68' of coax.
> > 
> > What's left?  A "normal" open wire fed dipole, better
> > known as a Zepp.
> > 
> > 73!
> > 
> > Ken Kopp - K0PP
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Re: [Elecraft] Noise-cancelling headphones mystery

[CUTTER DAVID via Elecraft]

Noise cancelling that I've come across is limited to low/medium frequencies.  
If your hearing takes you higher, the noise-cancelling has finished by then.  
This is probably not the ability of the sensing mic but the circuitry and/or 
room acoustics, echo, etc.  I'm a little out of date on the subject but that's 
probably the essence of it.
David G3UNA

> On 09 December 2018 at 15:26 "Dave Cole (NK7Z)"  wrote:
> 
> 
> As a guess, I would say the response of the mic used to derive the phase 
> canceling audio does not adequately cover the audio noise spectrum of 
> the 1500 puts out...  Thus it can't phase cancel very well...
> 
> That or your 1500 is filled with bad magic because it is supposed to be 
> my KPA-1500 and it is mad at you.
> 
> 73s and thanks,
> Dave (NK7Z/NNR0DC)
> https://www.nk7z.net
> ARRL Technical Specialist
> ARRL Volunteer Examiner
> ARRL OOC for Oregon
> 
> On 12/9/18 5:16 AM, eric norris via Elecraft wrote:
> > I have owned a pair of Heil noise-cancelling headphones for many years.  
> > They worked very well to reduce the noise of my old AL-1200 amplifier, and 
> > the 5 fans on my cantankerous man-killer Henry 2002A EME amplifier.  
> > However, they are completely ineffective against the KPA1500.  I bought a 
> > pair of Bose noise-cancelling headphones recently, and they work much 
> > better but are a bit tinny and eat batteries.
> > My question for the audio experts on this list is why don't the Heils work 
> > with the KPA1500?  Does anyone have a recommendation for a pair of really 
> > good noise-cancelling headphones with a more flat response?
> > 73 Eric WD6DBM
> > 
> > Sent from Yahoo Mail on Android
> > __
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> > Message delivered to d...@nk7z.net
> > 
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Re: [Elecraft] OT: G5RV antenna

[CUTTER DAVID via Elecraft]

In addition, Reg was designing in the era of valve output transmitters with 
built-in pi-tank matching system, so, it was possible to match on different 
bands.  I'm sure mine worked across 80 to 10m in those days.  For 80 to 10m 
these days I use a off-centre-fed dipole with hybrid choke/transformer at the 
feed point as designed by DJ0IP for minimum common mode current.
David G3UNA

> On 08 December 2018 at 16:32 Ken G Kopp  wrote:
> 
> 
> As I've already stated … I have a copy of the original Varney
> RSGB article that describes the G5RV and plainly states that
> it's a 20M only antenna.
> 
> Remember, it requires an antenna tuner …
> 
> Start with a dipole …
> 
> Keep the "magic" 32' length of 300 ohm feedline.
> 
> Delete the 68' of coax.
> 
> What's left?  A "normal" open wire fed dipole, better
> known as a Zepp.
> 
> 73!
> 
> Ken Kopp - K0PP
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Re: [Elecraft] missing part ?????

[Don Wilhelm]

Bill,

Download the K3 schematics - they are searchable .pdf documents.

73,
Don W3FPR

On 12/9/2018 10:58 AM, Bill Steffey wrote:

horror of horrors


Just updated the K3 firmware. Had to pull out the k3 from it hole in the 
cabinet.


All went ok after I had to do a forced load. Seems to be fine.


BUT ON THE TABLE IS A SMD PART , the top, including coil of a  4.7uh 
smd inductor.


Something is missing that part.

Is there a way to search elecraft documents to search for that part , 
prior to tearing open my K3.

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Re: [Elecraft] Noise-cancelling headphones mystery

[K9MA]

No noise canceling headphones will be effective against the high frequency 
noise of the KPA1500 fans. However, passive headphones can be very effective. 
The Radiosport makes the fans nearly inaudible. Not cheap, but neither is the 
KPA1500. 

73,

Scott K9MA 

--

Scott Ellington. K9MA

 --- via iPhone

> On Dec 9, 2018, at 6:16 AM, eric norris via Elecraft 
>  wrote:
> 
> I have owned a pair of Heil noise-cancelling headphones for many years.  They 
> worked very well to reduce the noise of my old AL-1200 amplifier, and the 5 
> fans on my cantankerous man-killer Henry 2002A EME amplifier.  However, they 
> are completely ineffective against the KPA1500.  I bought a pair of Bose 
> noise-cancelling headphones recently, and they work much better but are a bit 
> tinny and eat batteries.
> My question for the audio experts on this list is why don't the Heils work 
> with the KPA1500?  Does anyone have a recommendation for a pair of really 
> good noise-cancelling headphones with a more flat response? 
> 73 Eric WD6DBM
> 
> Sent from Yahoo Mail on Android
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Re: [Elecraft] Elecraft CW Net Announcement

[Kurt Cramer]

Yes the Elecraft SSB net is 14.3035 at 1800 Z on Sunday. NCS is in Chicago. If 
you don’t copy him, stay around because there are relay stations in Caif. 
Oregon, Colorado , Fla. east cost, N. Texas  and I forgot some. 

Kurt W7QHD 

 

> On Dec 8, 2018, at 9:47 PM, kevinr  wrote:
> 
> Good Evening,
> 
> Only a few more weeks before the sun turns the corner and starts moving 
> again.  That means I think I have found the proper times for the nets until 
> the next time change.  Both twenty and forty meter nets seemed to have OK 
> propagation.  Nothing fantastic but quiet and reasonably strong.
> 
> We are through our first cold snap.  Any remaining leaves or green fern 
> fronds are now some shade of brown and a bit crispy around the edges.  My 
> begonias had been flowering up until last weekend.  Now they are brown and 
> shriveled.  It was a good year for them.  Now to figure out how to handle the 
> bulbs; it has been too many years since I tended mom's glads.  Hints?
> 
> 
> Please join us tomorrow on:
> 
> 
> 14050 kHz at 2200z Sunday  (2 PM PST Sunday)
> 
>   7047 kHz at z Monday (4 PM PST Sunday)
> 
> 
> 73,
> 
>Kevin. KD5ONS
> 
> -
> 
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[Elecraft] missing part ?????

[Bill Steffey]

horror of horrors


Just updated the K3 firmware. Had to pull out the k3 from it hole in the 
cabinet.


All went ok after I had to do a forced load. Seems to be fine.


BUT ON THE TABLE IS A SMD PART , the top, including coil of a  4.7uh 
smd inductor.


Something is missing that part.

Is there a way to search elecraft documents to search for that part , 
prior to tearing open my K3.



tnx


bill  ny9h/3

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Re: [Elecraft] Noise-cancelling headphones mystery

[Dave Cole (NK7Z)]

As a guess, I would say the response of the mic used to derive the phase 
canceling audio does not adequately cover the audio noise spectrum of 
the 1500 puts out...  Thus it can't phase cancel very well...


That or your 1500 is filled with bad magic because it is supposed to be 
my KPA-1500 and it is mad at you.


73s and thanks,
Dave (NK7Z/NNR0DC)
https://www.nk7z.net
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon

On 12/9/18 5:16 AM, eric norris via Elecraft wrote:

I have owned a pair of Heil noise-cancelling headphones for many years.  They 
worked very well to reduce the noise of my old AL-1200 amplifier, and the 5 
fans on my cantankerous man-killer Henry 2002A EME amplifier.  However, they 
are completely ineffective against the KPA1500.  I bought a pair of Bose 
noise-cancelling headphones recently, and they work much better but are a bit 
tinny and eat batteries.
My question for the audio experts on this list is why don't the Heils work with 
the KPA1500?  Does anyone have a recommendation for a pair of really good 
noise-cancelling headphones with a more flat response?
73 Eric WD6DBM

Sent from Yahoo Mail on Android
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Re: [Elecraft] External Display Freezes after Delay

[John Simmons]

Do you suppose it is RF related? Have you tried very low output power 
and/or a dummy load? Possibly a bad coax connector?


73,
-John NI0K

brenntl wrote on 12/9/2018 8:54 AM:

I have a nuisance issue with the P3 and an external display. When I apply
13.8VDC to the K3 and P3 simultaneously (P3 POWER button must be pushed to
turn on the P3), the external display displays the image first followed by
the image on the P3. This all appears to be normal operation.
Thirty seconds after the image appears on the external display, the display
image freezes and remains frozen and the image on the P3 remains normal. If
I then turn the P3 POWER BUTTON off for a few seconds and then turn it back
on, the image reappears and remains working on the P3 and the external
monitor until I power the whole system down. This sequence of events is very
repeatable, including the time it takes the external display to freeze, and
has done this since I first built the P3.
I have had the same result with 2 different displays. Reloading and
installing the latest P3 and SVGA firmware has no effect and nothing changes
from that described above. It does not make any difference whether I have
the display power on before turning on the P3 or after. I have searched
posts and found nothing on this specific problem.

CONDITIONS:
K3 FW: MCU Ver 5.64
P3 FW: MCU Ver 1.60
P3 Options: SVGA installed running Ver 1.34
P3 Ext. display resolution: 1280 X 1024

Terry Brenn, N1ACI



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Re: [Elecraft] Less Than Perfect Antennas [was Flumoxed]

[Dave Hachadorian]

I will soon publish a new Choke Cookbook for chokes wound on a 
single #31 2.4-in o.d. core with RG400, a #12 teflon pair, and a 
#12 THHN pair. I am no longer recommending chokes wound with 
RG8/11/213 size coax


Dang, I'm going to have a TON of spare 2.4" cores left over from 
my old-style chokes!


Dave Hachadorian, K6LL
Yuma, AZ


.



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[Elecraft] External Display Freezes after Delay

[brenntl]

I have a nuisance issue with the P3 and an external display. When I apply
13.8VDC to the K3 and P3 simultaneously (P3 POWER button must be pushed to
turn on the P3), the external display displays the image first followed by
the image on the P3. This all appears to be normal operation.
Thirty seconds after the image appears on the external display, the display
image freezes and remains frozen and the image on the P3 remains normal. If
I then turn the P3 POWER BUTTON off for a few seconds and then turn it back
on, the image reappears and remains working on the P3 and the external
monitor until I power the whole system down. This sequence of events is very
repeatable, including the time it takes the external display to freeze, and
has done this since I first built the P3.
I have had the same result with 2 different displays. Reloading and
installing the latest P3 and SVGA firmware has no effect and nothing changes
from that described above. It does not make any difference whether I have
the display power on before turning on the P3 or after. I have searched
posts and found nothing on this specific problem.

CONDITIONS:
K3 FW: MCU Ver 5.64
P3 FW: MCU Ver 1.60
P3 Options: SVGA installed running Ver 1.34
P3 Ext. display resolution: 1280 X 1024

Terry Brenn, N1ACI



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[Elecraft] OT: G5RV antenna PLOTS

[Jan]

Here is a nice discussion (link below) on the G5RV ~ Tnx, Jaro OK1CJB

including current distribution and radiation plots for various bands

Regards, Jan K1ND



www.ok1cjb.cz/pdf/g5rv.pdf 








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Re: [Elecraft] Elecraft Net

[Carl Yaffey]

Still true.


> On Dec 9, 2018, at 7:49 AM, Ian Kahn  wrote:
> 
> Good morning. The Elecraft SSB Net used to be every Sunday at 1800 UTC on
> 14.303.5. I used to be one of the net controllers. However, it has been a
> couple of years since I've gotten on, so it may have changed.
> 
> 73 de,
> 
> Ian, NV4C

Carl Yaffey  K8NU
Recording studio.
cyaffeyno_s...@gmail.com 
614 268 6353, Columbus OH
http://www.carl-yaffey.com
http://www.grassahol.com
http://www.bluesswing.com
Https://www.columbusfolkmusicsociety.org
http://www.timbrewolves.carl-yaffey.com
http://www.columbusshotokankarate.com









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Re: [Elecraft] Less Than Perfect Antennas [was Flumoxed]

[Bob McGraw K4TAX]

Balun Designs, both 1:1 and 4:1 for use with tuners.I have both because I 
also have a folded dipole that I feed direct. 

I suggest you give the folks at Balun Designs a call and discuss your exact 
needs.  Take their advice. 
Also see the DJ0IP site for details on baluns.  Just Google DJ0IP. 

And I use the 8232 common mode choke from The Wireman. 

73
Bob, K4TAX


Sent from my iPhone

> On Dec 8, 2018, at 9:35 PM, Don Wilhelm  wrote:
> 
> Robert,
> 
> That depends on what you want to achieve.  If it is more gain broadside 
> (perpendicular to the antenna) then the answer is yes.  On 80 meters the 160 
> meter elements alone will be Two Halfwaves in Phase and will have 2 to 3 dB 
> of gain broadside to the antenna.
> 
> Of course, that gain comes at a cost of radiation in other directions. L.B. 
> Cebik (SK) explained it best - if you visualize the radiation from an 
> isotropic antenna as a balloon, then squeeze that balloon so the largest 
> projection is in the direction(s) of the gain, you will see the reduction of 
> gain in other directions.  In other words, there is no free lunch.  For the 
> dipole, squeeze the balloon in the middle a bit, and for 2 half-waves in 
> phase, squeeze it a bit harder.
> If you want to achieve the maximum squeeze, change the length of each half of 
> the radiator to 5/8 wavelengths and you will have the greatest broadside gain 
> before the radiation pattern breaks into multiple lobes.
> 
> You can find that basic information in most any good antenna handbook. It is 
> the basis for all wire gain antennas.
> 
> For rotatable arrays or other directional switchable arrays, that balloon 
> effect is exactly what is desired, but for a fixed wire antenna, that balloon 
> effect may not be desirable if you want to work stations that are off the 
> ends of the antenna.
> 
> So the answer is -- it all depends.  Do you want to orient your antenna to 
> favor certain locations, or do you want something more or less 
> omnidirectional.  An Inverted Vee will be slightly more omnidirectional than 
> a horizontal dipole.  A vertical is an omnidirectional antenna with a 
> circular pattern, but normally with a lower take-off angle than a dipole at a 
> modest height.
> 
> If you want to work nearby stations as well as those further away, use a 
> dipole - if you want to work DX (which usually comes in at low elevation 
> angles, use a vertical.
> 
> 73,
> Don W3FPR
> 
>> On 12/8/2018 10:03 PM, Robert G Strickland wrote:
>> Ron...
>> Would such an antenna cut for 80m, fed with ladder-line, and used on 40m, be 
>> a better performer on either band than an 80-40m fan dipole fed with 72ohm 
>> coax? Leaving all other extraneous but influencing parameters aside. I have 
>> the second antenna; the weight of all that wire and the coax with a ferrite 
>> balun results in a significant sag. I'm wondering if the first antenna, 
>> lighter and higher in the air, would perform better? Thanks.
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> 


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[Elecraft] Noise-cancelling headphones mystery

[eric norris via Elecraft]

I have owned a pair of Heil noise-cancelling headphones for many years.  They 
worked very well to reduce the noise of my old AL-1200 amplifier, and the 5 
fans on my cantankerous man-killer Henry 2002A EME amplifier.  However, they 
are completely ineffective against the KPA1500.  I bought a pair of Bose 
noise-cancelling headphones recently, and they work much better but are a bit 
tinny and eat batteries.
My question for the audio experts on this list is why don't the Heils work with 
the KPA1500?  Does anyone have a recommendation for a pair of really good 
noise-cancelling headphones with a more flat response? 
73 Eric WD6DBM

Sent from Yahoo Mail on Android
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Re: [Elecraft] Elecraft Net

[Ian Kahn]

Good morning. The Elecraft SSB Net used to be every Sunday at 1800 UTC on
14.303.5. I used to be one of the net controllers. However, it has been a
couple of years since I've gotten on, so it may have changed.

73 de,

Ian, NV4C

On Sun, Dec 9, 2018, 12:43 AM kevinr  Hello,
>
> Yes, there is an SSB net each Sunday morning on twenty meters.
> However, I am not sure of the time or the frequency.  Can someone with
> better information please help Mr. Bridge?  I seem to remember it's
> around 10 AM my time (PST).
>
> 73,
>
> Kevin.  KD5ONS
>
>
> On 12/8/18 9:01 PM, Sheridan Bridge wrote:
> > Hi Kevin.
> > Sorry to send this to ur personal email. I’m having some trouble posting
> to the reflector. Anyway, I wanted to ask you if Elecraft has a SSB net
> along with the CW net on Sundays. I should know this but i’ll blame it on
> ‘old age’.
> > Thanks es 73,
> >
> > Guy Bridge WB7SZI
> >
> > Sent from my iPhone
> >
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Re: [Elecraft] Fwd: Re: K3S K3 new firmware - how it doesnt download?

[Henk de Vries]

AdditionIt reads fine from the Utility and when I download it first to my 
PC.Automatic reading from the website however gives basic file scripting
73 Henk



Verzonden vanaf mijn Samsung Galaxy-smartphone.
 Oorspronkelijk bericht Van: Henk de Vries  
Datum: 09-12-18  09:55  (GMT+01:00) Aan: elecraft@mailman.qth.net Onderwerp: 
[Elecraft] Fwd: Re: K3S K3 new firmware - how it doesnt download? 
I downloaded the release note to see all the changes but get nothing 
readable.This happens on PC, tablet and phone.
If anyone can read it please be so kind to forward it.
73 HenkPA0C


Verzonden vanaf mijn Samsung Galaxy-smartphone.
 Oorspronkelijk bericht Van: Grant Youngman 
 Datum: 09-12-18  00:08  (GMT+01:00) Aan: IK4EWX 
 Cc: elecraft@mailman.qth.net Onderwerp: Re: [Elecraft] K3S 
K3 new firmware - how it doesnt download? 
I haven’t tried getting it with the Utility. But you can download it from 
ftp://ftp.elecraft.com/K3/Firmware

Grant NQ5T 

Sent from my iPhone

> On Dec 8, 2018, at 5:48 PM, IK4EWX  wrote:
> 
> Thanks Don.
> I will retry two-three days from now.
> 73,
> Ian IK4EWX
> 
> 
> 
> --
> 
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Re: [Elecraft] Fwd: Re: K3S K3 new firmware - how it doesnt download?

[IK4EWX]

NR4C said well. I maked a mistake. Now after pressing Copy New Files from
Elecraft, Check Revisions work  well and Send All New Firmware permitted new
version 5.66 installation.
PA0C is right about Release Note: the file have strange things written, and
notes unreadable.
Thanks to all for your help, OCs
Ian IK4EWX



--
Sent from: http://elecraft.365791.n2.nabble.com/
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[Elecraft] Fwd: Re: K3S K3 new firmware - how it doesnt download?

[Henk de Vries]

I downloaded the release note to see all the changes but get nothing 
readable.This happens on PC, tablet and phone.
If anyone can read it please be so kind to forward it.
73 HenkPA0C


Verzonden vanaf mijn Samsung Galaxy-smartphone.
 Oorspronkelijk bericht Van: Grant Youngman 
 Datum: 09-12-18  00:08  (GMT+01:00) Aan: IK4EWX 
 Cc: elecraft@mailman.qth.net Onderwerp: Re: [Elecraft] K3S 
K3 new firmware - how it doesnt download? 
I haven’t tried getting it with the Utility. But you can download it from 
ftp://ftp.elecraft.com/K3/Firmware

Grant NQ5T 

Sent from my iPhone

> On Dec 8, 2018, at 5:48 PM, IK4EWX  wrote:
> 
> Thanks Don.
> I will retry two-three days from now.
> 73,
> Ian IK4EWX
> 
> 
> 
> --
> 
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Re: [Elecraft] Less Than Perfect Antennas [was Flumoxed]

[Jim Brown]

Several reasons why this is a bad idea. First, resonant dipoles are a 
much closer match to 50 or 75 ohm coax than to 300 ohm line. Low dipoles 
are closer to 50 ohms, higher ones closer to 75 ohms.


Second, the MOST important place for a choke is at the feedpoint. The 
feedline is part of the antenna until it hits the first choke! If, for 
example, the feedline is 60 ft long and the only choke is at the shack, 
that 60 ft of feedline is picking up noise and can be de-tuning your 
antenna. Additional chokes along the line can prevent the feedline from 
interacting with nearby vertical antennas, and can further reduce 
feedline noise.


Third, N6BV wrote an excellent piece for QST several years ago observing 
that it's VERY easy to fry a common mode choke on a line with high 
SWR.   This happens when the choke is at a high current point on the 
transmission line, overheating the line and the ferrite core.


I will soon publish a new Choke Cookbook for chokes wound on a single 
#31 2.4-in o.d. core with RG400, a #12 teflon pair, and a #12 THHN pair. 
I am no longer recommending chokes wound with RG8/11/213 size coax, for 
reasons that will be detailed in the applications note that comes with 
the "cookbook." I've been beta testing THHN and enameled pair chokes for 
years; recent work shows that that RG400 and teflon #12 are the better 
choice.


An 80/40 fan dipole will perform as well as separate 80 and 40 dipoles 
at the same height -- the only compromise is that SWR bandwidth is 
reduced by about half on 40M, but a fan dipole cut for the center of the 
band is still below 2:1 at the band edges.


As to sag -- height IS a good thing. Modeling shows that horizontal 
antennas, it takes a change of 5 ft on 40M for between 30 and 70 ft, and 
10 ft on 80M for antennas twice that height to make a difference of 0.9 
dB.  That work is presented in this peer-reviewed paper. 
http://k9yc.com/AntennaPlanning.pdf  The discussion of rigging height 
begins around page 10.


Yesterday in this thread someone questioned my statement that the 
difference in field strength between a horizontal dipole and an inverted 
Vee with it's apex at the same mounting height was in the range of 1-2 
dB. For another project, I just modeled an inverted Vee for 80M with 
it's apex at 46 ft and ends at 17 ft. The difference was about 1.5 dB as 
compared to a horizontal antenna at 46 ft. Bringing the ends further 
down will, of course, increase that difference. I didn't model it, but 
3dB seems a reasonable number. But remember, with antennas, higher is 
usually better. :) When we use Inv Vees for portable setups, we always 
try to rig the ropes for the ends of the antenna as far away and as high 
as possible.


73, Jim K9YC

On 12/8/2018 8:00 PM, Bob McGraw K4TAX wrote:
The 80 / 40 M fan dipole fed with 300 ohm transmitting line {The 
Wireman #562} and then use the balun at the point where the feed line 
enters the house would be preferable.



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