date:20190216

Re: [Elecraft] Antennas for portable ops

2019-02-16 Thread Steve Sergeant

On 2/16/19 20:17 PM, Steve via Elecraft wrote:
> I just bought a KX-3 so I have a couple questions about antennas. I
> would like suggestions for man portable and portable fixed. I have
> received suggestions for end fed antennas for fixed ops but will
> entertain others. Thanks Steve kb1chu

It's really a question of how portable you want to be.

Do you want to travel super-light but you've got the luxury of time to
set-up? Or do you want to be able to make contacts when stopped just for
a minute or two? Or do you want to work QSOs while
pedestrian/bicycle/equestrian/etc. mobile?

For my KX2 I use everything from an MFJ multi-band pocket whip, a couple
of pieces of non-resonant-length wire, a magnetic loop, to a 26ga.
20m/40m/80m dipole I deploy on a 10m fiberglass pole.
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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Christopher Hoover

Argh.  Wish I had known that an option!

On Sat, Feb 16, 2019, 12:56 PM John Stengrevics  Who uses PL-259s?  They suck.  I ordered my K3S with Ns and really should
> have specified DINs.  But, that is a retrofit project for another day.
>
> John
> WA1EAZ
>
> > On Feb 16, 2019, at 2:47 PM, Jim Brown 
> wrote:
> >
> > On 2/16/2019 9:39 AM, Bob McGraw K4TAX wrote:
> >> Do not trust PL-259 connectors installed only "finger tight". Today
> many of those PL-259 connectors "look good" but are really poor quality
> connectors.
> >
> > If you live in North America, the ONLY good PL-259 connector is one that
> labeled Amphenol 83-1SP.  Most others are JUNK.  I'm told there are some
> other decent brands sold in EU.
> >
> >> ALWAYS snug the PL-259's with a pair of 4" channel lock pliers.
> >
> > RIGHT. And always be VERY careful about how you solder them, especially
> the shield.
> >
> > 73, Jim K9YC
> >
> > __
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> >
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> > Message delivered to jstengrev...@comcast.net
>
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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Gary K9GS

Exactly my point.  A panel mount version is $25.Do you really want to see that 
on  K3?Very silly.73,Gary K9GS
 Original message From: Jim Miller  Date: 
2/16/19  6:48 PM  (GMT-06:00) To: Gary K9GS  Cc: John 
Stengrevics , Jim Brown , 
Elecraft Reflector  Subject: Re: [Elecraft] KPA-1500 
failed! Google DIN 
4.3/10.https://blog.pasternack.com/rf-components/coaxial-connectors/what-is-so-special-about-the-4-3-10-coaxial-connector/jim
 ab3cvOn Sat, Feb 16, 2019 at 7:09 PM Gary K9GS  
wrote:That's about the silliest thing I've ever heard.Really, DIN connectors on 
a radio?73,Gary K9GS
 Original message From: John Stengrevics 
 Date: 2/16/19  2:55 PM  (GMT-06:00) To: 
j...@audiosystemsgroup.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] 
KPA-1500 failed! Who uses PL-259s?  They suck.  I ordered my K3S with Ns and 
really should have specified DINs.  But, that is a retrofit project for another 
day.JohnWA1EAZ> On Feb 16, 2019, at 2:47 PM, Jim Brown 
 wrote:> > On 2/16/2019 9:39 AM, Bob McGraw K4TAX 
wrote:>> Do not trust PL-259 connectors installed only "finger tight". Today 
many of those PL-259 connectors "look good" but are really poor quality 
connectors.> > If you live in North America, the ONLY good PL-259 connector is 
one that labeled Amphenol 83-1SP.  Most others are JUNK.  I'm told there are 
some other decent brands sold in EU.> >> ALWAYS snug the PL-259's with a pair 
of 4" channel lock pliers.> > RIGHT. And always be VERY careful about how you 
solder them, especially the shield.> > 73, Jim K9YC> > 
__> Elecraft 
mailing list> Home: http://mailman.qth.net/mailman/listinfo/elecraft> Help: 
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list hosted by: http://www.qsl.net> Please help support this email list: 
http://www.qsl.net/donate.html> Message delivered to 
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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Jim Brown


On 2/16/2019 3:07 PM, Drew AF2Z wrote:
This allows very tight snugging by hand, no need of wrenching. 


What's the logic behind that?

73, Jim K9YC


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Re: [Elecraft] Searching for Noise (i.e., Samples Thereof)

2019-02-16 Thread Jim Brown


On 2/16/2019 2:56 PM, Wayne Burdick wrote:

As time permits, we're trying to better characterize the RF noise that plagues 
stations at various locations.


NK7Z is doing that on his excellent site. https://www.nk7z.net/

73, Jim K9YC

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[Elecraft] Antennas for portable ops

2019-02-16 Thread Steve via Elecraft

I just bought a KX-3 so I have a couple questions about antennas. I 
would like suggestions for man portable and portable fixed. I have 
received suggestions for end fed antennas for fixed ops but will 
entertain others. Thanks Steve kb1chu


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Re: [Elecraft] New KPA500/KAT500 question

2019-02-16 Thread Dave Cole (NK7Z)

Many thanks to all!  I figured it out!  I was looking to move the band 
data and thought it came from the data connection, not the AUX connection.


My own preconceived ideas were holding me back from understanding the 
process...  Broke it down into little single steps...  Connected 
everything that way, and it worked first time...


With everyone's help I finally got past the assumptions set I had... 
Now all is well.


What an absolutely cool little amp this is...  It is so quiet...  I am 
used to large clunking amps...  First time I have operated full break in 
on CW!  So nice...


The fellow I bought it from is getting a KPA1500...  Can't wait for that 
one...


THANKS TO ALL that helped!


73s and thanks,
Dave (NK7Z)
https://www.nk7z.net
Award Manager, 30MDG Grid Awards
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon

On 2/16/19 7:36 PM, Cady, Fred wrote:

Hi Dave,

The pdf files you will find at 
http://www.ke7x.com/home/k-line-introduction-and-set-up-guide may be of 
some help.


73,

Fred KE7X





*From:* elecraft-boun...@mailman.qth.net 
 on behalf of Dave Cole (NK7Z) 


*Sent:* Saturday, February 16, 2019 5:51 PM
*To:* Elecraft Reflector
*Subject:* [Elecraft] New KPA500/KAT500 question
Hello,

I have a K3, and a P3, connected to a computer.  I now have a KAT500,
and a KPA500.

I do not see a full cabling diagram for the entire setup.  Does one
exist?  If so, where can I obtain it?

--
73s and thanks,
Dave (NK7Z)
https://www.nk7z.net
Award Manager, 30MDG Grid Awards
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon
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Re: [Elecraft] Removing/connecting PL-259s

2019-02-16 Thread K9MA

I use a single PL-259 for all the transmitting antennas as a lightning 
disconnect. I can attest to the fact that trouble ensues if I forget to 
tighten it with the pliers. I crashed my computer during the contest 
today. Twice, before I caught on.


73,
Scott K9MA

On 2/16/2019 21:40, Drew AF2Z wrote:
No, a bit paranoid perhaps but I disconnect the rig entirely, 
including p/s cable. It's not too bad since I'm mostly a CW operator 
and don't usually have a lot of other peripherals, SDR, computer, etc. 
connected to the K3.


BTW, I don't trust the Amphenol name particularly after getting a bad 
plug that wouldn't thread correctly (only realized after soldering the 
thing on the coax and trying to use it. Arggh!). Amphenol is offshore 
product now.


73,
Drew
AF2Z


On 02/16/19 18:24, Don Wilhelm wrote:

Drew and all,

I have changed the subject line to something more akin to the current 
discussion.


Have you considered adding a coax switch?  Turning to switch to an 
open position (or better yet to a dummy load) when the radio is not 
in use will provide protection and is a lot easier than removing the 
connectors.


73,
Don W3FPR

On 2/16/2019 6:07 PM, Drew AF2Z wrote:
FWIW, I use NO-OX-ID contact grease on my PL259 connectors. This 
allows very tight snugging by hand, no need of wrenching.


During lightning season I frequently connect/disconnect my rig and 
tuner cables. The fine film of lube on the connector threads makes a 
big difference. Without it? A real PITA, not to mention wear and 
tear on the the SO-239's.





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--
Scott  K9MA

k...@sdellington.us

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Re: [Elecraft] Removing/connecting PL-259s

2019-02-16 Thread Drew AF2Z

No, a bit paranoid perhaps but I disconnect the rig entirely, including 
p/s cable. It's not too bad since I'm mostly a CW operator and don't 
usually have a lot of other peripherals, SDR, computer, etc. connected 
to the K3.


BTW, I don't trust the Amphenol name particularly after getting a bad 
plug that wouldn't thread correctly (only realized after soldering the 
thing on the coax and trying to use it. Arggh!). Amphenol is offshore 
product now.


73,
Drew
AF2Z


On 02/16/19 18:24, Don Wilhelm wrote:

Drew and all,

I have changed the subject line to something more akin to the current 
discussion.


Have you considered adding a coax switch?  Turning to switch to an open 
position (or better yet to a dummy load) when the radio is not in use 
will provide protection and is a lot easier than removing the connectors.


73,
Don W3FPR

On 2/16/2019 6:07 PM, Drew AF2Z wrote:
FWIW, I use NO-OX-ID contact grease on my PL259 connectors. This 
allows very tight snugging by hand, no need of wrenching.


During lightning season I frequently connect/disconnect my rig and 
tuner cables. The fine film of lube on the connector threads makes a 
big difference. Without it? A real PITA, not to mention wear and tear 
on the the SO-239's.





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Re: [Elecraft] New KPA500/KAT500 question

2019-02-16 Thread Cady, Fred

Hi Dave,

The pdf files you will find at 
http://www.ke7x.com/home/k-line-introduction-and-set-up-guide may be of some 
help.

73,

Fred KE7X




From: elecraft-boun...@mailman.qth.net  on 
behalf of Dave Cole (NK7Z) 
Sent: Saturday, February 16, 2019 5:51 PM
To: Elecraft Reflector
Subject: [Elecraft] New KPA500/KAT500 question

Hello,

I have a K3, and a P3, connected to a computer.  I now have a KAT500,
and a KPA500.

I do not see a full cabling diagram for the entire setup.  Does one
exist?  If so, where can I obtain it?

--
73s and thanks,
Dave (NK7Z)
https://www.nk7z.net
Award Manager, 30MDG Grid Awards
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon
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Re: [Elecraft] KPA500 serial interfaces

2019-02-16 Thread W2xj

As is often the case on reflectors, things often drift of the main topic. 
RS232, 422. , and RS485 are among a number of electrical specifications that 
permits the transmission of serial data. While each has certain inherent 
limitations due to the electrical specification, it is really how the software 
involved implements the interface can be utilized. 

Sent from my iPad

> On Feb 16, 2019, at 7:29 PM, Brendon Whateley  wrote:
> 
> I always worry about what I don't know with this kind of discussion that
> seems to dive into entrenched positions of pedantic certainty. Since I love
> my KX3 and other Elecraft products, as well as various microcontrollers, I
> was concerned that I'd missed something about RS232 which I've used for
> decades. So I did a little research. And let me tell you there is so much
> information out there that a pedant can basically shut down any discussion
> as being inaccurate! Don't dare talk about DB9 connectors on equipment
> because you probably mean DE-9P!
> 
> Reading the RS232 standard(s), it is clear that any multi-point
> implementations are not technically RS232 compliant and require
> non-standard wiring and/or software and hardware support that is not in the
> specification. Directly connecting standard's compliant equipment will be
> hit and miss and could damage some devices - strict compliance to RS232 is
> short-circuit protected between pin pairs, but many devices are "sort-of"
> compliant. But if you control all sides, then proprietary implementations
> could be easily done. Again, that would not technically comply with the
> standard. On the other hand, RS232 and RS423 support a multi-drop (multiple
> listeners, one sender) format in some cases, which only allows 1 bus driver
> and up to 10 receivers.
> 
> BUT. There have been many variations over the years, along with
> similar-seeming RS485 which is multi-drop. RS485 is wired in a similar way
> but is a current loop interface instead of voltage based.  I also found
> RS422 which is a long distance "drop-in-replacement" for RS232 and that has
> a multi-drop version, but there seem to be so many different flavors of
> wiring, it may as well be proprietary at that point.
> 
> I've found and reviewed a few dozen of the many, many specifications for
> serial communications that are similar to RS232 and can find none that fit
> the impression some of the earlier posts gave of having multiple devices
> communicating back-and-forth on the same physical RS232 connection. The
> talk of sharing connections with boxes that multiplex over an RS232
> connection led me to find the products that speak SDLC to a device that
> then communicates with a set of RS232 devices. I hardly think that is the
> same thing, since although a single RS232 is required on the computer, it
> is not speaking directly to the devices on the other end.
> 
> I looked up the Bisync protocol as well as the Uniscope equipment. It looks
> like although they did use what is called RS232 connectors and wiring, they
> did not follow the specification, so standards complient RS232 devices
> wouldn't work in a multi-drop setting.
> 
> In summary, it seems that a degree of liberty in the use of the terms and
> standards results in confusion and folks arguing across each other. There
> is a large difference between what might be possible over wiring that
> otherwise conforms to RS232 but is unrelated to the standard which is a
> point-to-point standard for linking two devices. Then if you overlay
> proprietary protocols as used by Uniscope, IBM, et.al along with the many
> almost RS232 standards and we get the situation where some insist that
> RS232 supports multi-point networking while others claim it doesn't. I
> think the bottom line is that any fancy connections (beyond what Elecraft
> specifies) between Elecraft devices will need additional software and/or
> hardware to support.
> 
> Some of the references I used:
> 
>   - RS232 connectors and wiring
>   
>   - IIT course on Serial Communications
>   
> 
>   - Blackbox RS232 connection sharing devices
>   
>   - IBM SDLC protocol concepts
>   
> 
>   - IBM SDLC communications adapter manual
>   
>   - List of some Network Bus standards
>   
>   - EIA RS232 V24 standard
>   
> 
> 
> With a hurting brain,
> 73 - Brendon
> KK6AYI
> 
> On Mon, Feb 11, 2019 at 2:51 PM Michael Blake via Elecraft <
> elecraft@mailman.qth.net> wrote:
> 
>> Andy, in support of your comments I was an

[Elecraft] Elecraft CW Net Announcement

2019-02-16 Thread kevinr


Good Evening,

   After a snow filled week the forecast is for sun and then more 
snow.  The solar flux has risen by one full point.  However, a solar 
breeze is due to hit on Tuesday.  There is another contest this week.  
The International DX CW contest.  If I can find room on 20 meters I will 
run the first net.  Otherwise the second net will start just as the 
contest ends.  Another good reason for having the second net start at 
z.



Please join us tomorrow on:

14050 kHz at 2200z Sunday  (2 PM PST Sunday) If possible.
 7047 kHz at z Monday  (4 PM PST Sunday)

73,

   Kevin. KD5ONS


And now there came both mist and snow,
And it grew wondrous cold:
And ice, mast-high, came floating by,
As green as emerald.

And through the drifts the snowy clifts
Did send a dismal sheen:
Nor shapes of men nor beasts we ken—
The ice was all between.

The ice was here, the ice was there,
The ice was all around:
It cracked and growled, and roared and howled,
Like noises in a swound!

_


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Re: [Elecraft] KEYBOARD

2019-02-16 Thread Harry Yingst via Elecraft

 I use a 64 key Genovation Keypad via serial and not via the P3, That way the 
P3 can have a keyboard plugged into it.
At one time I saw where somone had used a raspberry Pi to make a interface to 
go between two keyboarddevices and the P3 but I haven't found it again (that 
seems the best way to do it)

On Saturday, February 16, 2019, 7:06:03 AM EST, Dave Cole (NK7Z) 
 wrote:  

 Hi Bob,

On a related subject, but not quite what you asked about, if you are 
just looking for a way to fire off macros at the K3, and have the SVGA 
for the P3, see:

https://www.nk7z.net/adding-external-keypad-k3/

This is a way to use a 64 key Genovation keypad to fire off complex 
macros to the K3/P3, using a single keypress, from a dedicated pad, as 
opposed to having to type in macros, or triggers to the K3/P3 radio 
complex via a keyboard.

An example of what can be done would be the "Offset +" macro-- I press a 
single button on the Genovation keypad, and the Radio drops into split, 
the P3 shifts the CW signal to the left side of the display, while 
setting the bandwidth for the P3 to 6 KHz., to show the top part of the 
pile up, and then sets the K3 bandwidth to whatever I have set in the 
macro, all with a single button press.

I currently have 32 macros programmed up, some for power level setting, 
switching VFOs, triggering the K3 memories in CW or Voice, setting K3 
bandwidths, contest exchanges, IDs, etc.

There is a spread sheet of macros you can download for use within the 
Genovation setup at that URL as well.  I seldom even touch the K3 now, 
but to tune, or turn it on, or off.  Most of my K3/P3 operations comes 
from the Genovation keypad.

73s and thanks,
Dave (NK7Z)
https://www.nk7z.net
Award Manager, 30MDG Grid Awards
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon

On 2/15/19 6:53 PM, Bob Gibson via Elecraft wrote:
> I'm looking for the recommend keyboard to plug into the back of the P3 that 
> works! I looking for a mini keyboard..The one I have does not work..
> 
> 
> Thanks Bob
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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread john

Right Gary, a 7/8 EIA flange would be a much better radio connector:)

Actually I have a few 4.3-10 connecters, they should be an easy swap with
SO-239/N jacks but I have yet to use one and I certainly would not do this
on my K3S.

73,
John KK9A

Gary K9GS wrote: 

That's about the silliest thing I've ever heard.Really, DIN connectors on a
radio?73,Gary K9GS

From: John Stengrevics http://mailman.qth.net/mailman/listinfo/elecraft
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Re: [Elecraft] New KPA500/KAT500 question

2019-02-16 Thread Dave Cole (NK7Z)


Don,

Thank you for helping, and thank you for indulging a newcomer to 
Elecraft hardware, beyond the K3/P3.


As you can imagine I am excited to get this connected up, but being very 
careful!  Hence the questions here, and thank you again!


To clarify what I have now:
I have a K3, (not S, with the RS-232 port, not USB), for external 
communications.


Can you expand on:

"There is no relationship between the K3 and P3 for considerations with 
the amplifier and ATU."


What does this mean exactly?

My assumption set:
I am expecting the K3 to provide some sort of signal, (other than RF 
into the amp, from the K3, in order to provide band switching 
signaling), in order for the KAT/KPA to know what band they are supposed 
to be on, and then switch to that band and tuning  solution.


Is that a correct assumption on my part, or in my case, (not a K3S), 
does the amp/tuner derive band information from the RF leaving the K3?


I bought used, and am unsure what the original owner had-- a K3 or K3S, 
so I may not have the correct cable set for a K3.  I will query the 
previous owner tomorrow about this.


I am also giving a lot of info here that may not be relevant, as I am 
assuming I know almost nothing about connecting this setup together, 
given I can't locate a cabling diagram for the entire setup I have.


Again, thank you for the assistance here...

73s and thanks,
Dave (NK7Z)
https://www.nk7z.net
Award Manager, 30MDG Grid Awards
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon

On 2/16/19 5:26 PM, Don Wilhelm wrote:

Dave,

Open the KAT500 manual to page 5 and see the cabling diagram depicted 
there.


There is no relationship between the K3 and P3 for considerations with 
the amplifier and ATU.


If you have a K3S - the P3 connects to the P3 with the RS232 connector 
and not the ACC connector, so there is no conflict.


If you have the K3S or a K3 upgraded with the KIO3B, then download the 
latest P3 manual and look at the cabling on page 5.  You will need the 
CBLP3Y to connect it as shown there.


73,
Don W3FPR


On 2/16/2019 7:51 PM, Dave Cole (NK7Z) wrote:

Hello,

I have a K3, and a P3, connected to a computer.  I now have a KAT500, 
and a KPA500.


I do not see a full cabling diagram for the entire setup.  Does one 
exist?  If so, where can I obtain it?



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Re: [Elecraft] Elecraft Digest, Vol 178, Issue 14

2019-02-16 Thread Charlie T

What the heyull is a " hypricrits "  ???

C


-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of silve...@charter.net
Sent: Saturday, February 16, 2019 7:04 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Elecraft Digest, Vol 178, Issue 14

Amazing isn't it Hugh? What hypricrits 


-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of elecraft-requ...@mailman.qth.net
Sent: Saturday, February 16, 2019 6:25 PM
To: elecraft@mailman.qth.net
Subject: Elecraft Digest, Vol 178, Issue 14

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When replying, please edit your Subject line so it is more specific
than "Re: Contents of Elecraft digest..."


Today's Topics:

   1. KX3 and SDR IQ ( Spectravue) question (Viggo Magnus Nilsen Nilsen)
   2. Re: KPA1500 Failed (Dave Agsten)
   3. W8ZR Station Pro I for K3/K2 (cx...@4email.net)
   4.  KPA-1500 failed! (j...@kk9a.com)
   5. Re: KPA-1500 failed! (Bob McGraw K4TAX)
   6. Re: KPA-1500 failed! (Eric Swartz - WA6HHQ, Elecraft)
   7. Re: KPA3A Failure & related (Bob McGraw K4TAX)
   8. Re: KPA-1500 failed! (Peter Dougherty)
   9. Re: KPA-1500 failed! (Jim Brown)
  10. Re: KPA-1500 failed! (John Stengrevics)
  11. Re: KPA-1500 failed! (Wes)
  12. Re: KPA3A Failure & related (Don Wilhelm)
  13. Re: KPA-1500 failed! (Peter Dougherty)
  14. Re: KX3 and SDR IQ ( Spectravue) question (Don Wilhelm)
  15. Re: KPA-1500 failed! (Jorge Diez - CX6VM)
  16. Searching for Noise (i.e., Samples Thereof) (Wayne Burdick)
  17. Re: KPA-1500 failed! (Drew AF2Z)
  18. Re: KPA-1500 failed! (j...@kk9a.com)
  19. Re: KPA-1500 failed! (hawley, charles j jr)
  20. Re: Removing/connecting PL-259s (Don Wilhelm)


--

Message: 1
Date: Sat, 16 Feb 2019 18:03:44 +0100
From: Viggo Magnus Nilsen Nilsen 
To: elecraft@mailman.qth.net
Subject: [Elecraft] KX3 and SDR IQ ( Spectravue) question
Message-ID:

Content-Type: text/plain; charset="UTF-8"

Hello Elecrafters.,

Have some of you connected an SDR IQ to the KX3,, ( use as an Panadapter
with Spectravue) ?

Work very well with the K3

73' Viggo  LA9NEA.,

KX3,K3 and KPA500 owner.


--

Message: 2
Date: Sat, 16 Feb 2019 12:03:40 -0500
From: Dave Agsten 
To: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA1500 Failed
Message-ID: <556893a8-794e-4910-95b5-0af1a1fd0...@email.android.com>
Content-Type: text/plain; charset="utf-8"



--

Message: 3
Date: Sat, 16 Feb 2019 12:26:33 -0500
From: cx...@4email.net
To: elecraft@mailman.qth.net
Subject: [Elecraft] W8ZR Station Pro I for K3/K2
Message-ID: 
Content-Type: text/plain; charset=utf-8

Selling master station controller which integrates the switching and
control functions of amateur stations consisting of two transceivers (or
receiver/transmitter pairs)+ two linear amps. See
W8ZR.net/stationpro/index.htm or review in QST August 2010 for complete
description.

Handles legal limit up to 30MHz and 800w @ 54MHz. Works great with
modern and boat anchor rigs. Complete with cables and two breakout pods.
You supply 12v wall wart. Pictures on request. Shipped CONUS $285 from FL.
Tom, K2GO/HP1XT
305-767-1927


--

Message: 4
Date: Sat, 16 Feb 2019 12:35:10 -0500
From: 
To: 
Subject: [Elecraft]  KPA-1500 failed!
Message-ID: <004201d4c61d$f7dc53f0$e794fbd0$@com>
Content-Type: text/plain;   charset="us-ascii"

Sorry to hear this happen Peter, especially during a contes. LDMOS devices
are suppose to be pretty tough and the KPA1500 is not pushing their limits.
There are videos of a different LDMOS showing it to be indestructible:
https://www.youtube.com/watch?v=8ziYqjMQGEQ  Is the KPA1500 cooling and heat
sink adequate?  Personally if I owned this amp I would leave the fan on at a
tolerable speed 100% of the time.  Did you use the amp during the RTTY
contest last weekend?

John KK9A


Paul Baldock wrote: 

It sounds like one of the output devices have failed. Half power out 
is usually the indicator. A number here have reported this happening. 
It would be nice to know why this problem is occurring and if 
Elecraft are working on a fix.

- Paul
>
>On 2/16/2019 7:28 AM, lists at w2irt.net wrote:
> > I was operating in the ARRL-CW contest this morning and on 20m, with a
> > 1.2:1 SWR on the Yagi, all of a sudden I saw my power drop to about
> > 450-500W with about 40W in. Worked a few stations but not as easily as
> > when I turned everything on this morning. Switched over to phone 
> and made a few contacts.
> > Audio is fine barefoot with 100W out of the K3s-which

Re: [Elecraft] Removing/connecting PL-259s

2019-02-16 Thread Bob McGraw K4TAX


Don et al:

That is the  best idea!   Plus if one has a adequate outside lightning 
protection system, properly bonded to the AC mains, and then disconnects 
inside where they use a coax switch with gas discharge tubes and a 
grounding position, they are negating part of the system protection.


73

Bob, K4TAX

On 2/16/2019 5:24 PM, Don Wilhelm wrote:

Drew and all,

I have changed the subject line to something more akin to the current 
discussion.


Have you considered adding a coax switch?  Turning to switch to an 
open position (or better yet to a dummy load) when the radio is not in 
use will provide protection and is a lot easier than removing the 
connectors.


73,
Don W3FPR

On 2/16/2019 6:07 PM, Drew AF2Z wrote:
FWIW, I use NO-OX-ID contact grease on my PL259 connectors. This 
allows very tight snugging by hand, no need of wrenching.


During lightning season I frequently connect/disconnect my rig and 
tuner cables. The fine film of lube on the connector threads makes a 
big difference. Without it? A real PITA, not to mention wear and tear 
on the the SO-239's.

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Re: [Elecraft] New KPA500/KAT500 question

2019-02-16 Thread Don Wilhelm


Dave,

Open the KAT500 manual to page 5 and see the cabling diagram depicted there.

There is no relationship between the K3 and P3 for considerations with 
the amplifier and ATU.


If you have a K3S - the P3 connects to the P3 with the RS232 connector 
and not the ACC connector, so there is no conflict.


If you have the K3S or a K3 upgraded with the KIO3B, then download the 
latest P3 manual and look at the cabling on page 5.  You will need the 
CBLP3Y to connect it as shown there.


73,
Don W3FPR


On 2/16/2019 7:51 PM, Dave Cole (NK7Z) wrote:

Hello,

I have a K3, and a P3, connected to a computer.  I now have a KAT500, 
and a KPA500.


I do not see a full cabling diagram for the entire setup.  Does one 
exist?  If so, where can I obtain it?



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[Elecraft] KPA500 serial interfaces

2019-02-16 Thread Andy Durbin

"The talk of sharing connections with boxes that multiplex over an RS232 
connection led me to find the products that speak SDLC to a device that then 
communicates with a set of RS232 devices. I hardly think that is the same 
thing, since although a single RS232 is required on the computer, it is not 
speaking directly to the devices on the other end."

Don't know if this is related to the description of my interface but, in case 
it was, here is a bit more detail:

I use a relay to switch between 2 different RS232 transmitters.  One is the 
routine interrogator of the RS232 receiver, the other is switched in circuit 
when I want to send a non-routine command to the receiver.   The receiver 
doesn't know where the command came from and it doesn't care.  The routine 
interrogator doesn't know it was taken out of circuit because the TX line is 
only stolen in a gap between its routine interrogations.

As an example - I can configure my system so the KAT500 Utility is the routine 
interrogator of my KAT500.  When I change my TX frequency my controller 
switches the RS232 transmit source from the PC to my Arduino which sends the 
KAT500 a new frequency.  That frequency command is in a gap between the routing 
KAT500 Utility interrogations.

My interface actually has 3 multiplexing relays  - one for the KAT500 
interrogator (KAT500 Util or my interface), one for the KPA500 interrogator 
(KPA500 Util or my interface), and one for my TS-590 interrogator (OmniRIg or 
my interface).  

Works perfectly and, to the best of my knowledge, no RS232 standards were 
damaged.

(I wrote all of that without a single mention of "polling").

Andy, k3wyc


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[Elecraft] New KPA500/KAT500 question

2019-02-16 Thread Dave Cole (NK7Z)


Hello,

I have a K3, and a P3, connected to a computer.  I now have a KAT500, 
and a KPA500.


I do not see a full cabling diagram for the entire setup.  Does one 
exist?  If so, where can I obtain it?


--
73s and thanks,
Dave (NK7Z)
https://www.nk7z.net
Award Manager, 30MDG Grid Awards
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon
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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Jim Miller

Google DIN 4.3/10.

https://blog.pasternack.com/rf-components/coaxial-connectors/what-is-so-special-about-the-4-3-10-coaxial-connector/

jim ab3cv

On Sat, Feb 16, 2019 at 7:09 PM Gary K9GS  wrote:

> That's about the silliest thing I've ever heard.Really, DIN connectors on
> a radio?73,Gary K9GS
>  Original message From: John Stengrevics <
> jstengrev...@comcast.net> Date: 2/16/19  2:55 PM  (GMT-06:00) To:
> j...@audiosystemsgroup.com Cc: elecraft@mailman.qth.net Subject: Re:
> [Elecraft] KPA-1500 failed! Who uses PL-259s?  They suck.  I ordered my K3S
> with Ns and really should have specified DINs.  But, that is a retrofit
> project for another day.JohnWA1EAZ> On Feb 16, 2019, at 2:47 PM, Jim Brown <
> j...@audiosystemsgroup.com> wrote:> > On 2/16/2019 9:39 AM, Bob McGraw
> K4TAX wrote:>> Do not trust PL-259 connectors installed only "finger
> tight". Today many of those PL-259 connectors "look good" but are really
> poor quality connectors.> > If you live in North America, the ONLY good
> PL-259 connector is one that labeled Amphenol 83-1SP.  Most others are
> JUNK.  I'm told there are some other decent brands sold in EU.> >> ALWAYS
> snug the PL-259's with a pair of 4" channel lock pliers.> > RIGHT. And
> always be VERY careful about how you solder them, especially the shield.> >
> 73, Jim K9YC> >
> __> Elecraft
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[Elecraft] OT: Ref changing connectors

2019-02-16 Thread Ken G Kopp

I'm fond of BNC connectors for a number of reasons …

I suggest having a look at the Morse Express website.
You'll find -lots- of interesting stuff.  I have bought a
number of their SO-239 -> BNC conversion kits, stock
#OP-SB 1 or OP-SB 2 and use them on many items.
Examples are the Elecraft directional couplers and
my K3s.

Have a look …

73!

Ken Kopp - K0PP
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Re: [Elecraft] KPA500 serial interfaces

2019-02-16 Thread Brendon Whateley

I always worry about what I don't know with this kind of discussion that
seems to dive into entrenched positions of pedantic certainty. Since I love
my KX3 and other Elecraft products, as well as various microcontrollers, I
was concerned that I'd missed something about RS232 which I've used for
decades. So I did a little research. And let me tell you there is so much
information out there that a pedant can basically shut down any discussion
as being inaccurate! Don't dare talk about DB9 connectors on equipment
because you probably mean DE-9P!

Reading the RS232 standard(s), it is clear that any multi-point
implementations are not technically RS232 compliant and require
non-standard wiring and/or software and hardware support that is not in the
specification. Directly connecting standard's compliant equipment will be
hit and miss and could damage some devices - strict compliance to RS232 is
short-circuit protected between pin pairs, but many devices are "sort-of"
compliant. But if you control all sides, then proprietary implementations
could be easily done. Again, that would not technically comply with the
standard. On the other hand, RS232 and RS423 support a multi-drop (multiple
listeners, one sender) format in some cases, which only allows 1 bus driver
and up to 10 receivers.

BUT. There have been many variations over the years, along with
similar-seeming RS485 which is multi-drop. RS485 is wired in a similar way
but is a current loop interface instead of voltage based.  I also found
RS422 which is a long distance "drop-in-replacement" for RS232 and that has
a multi-drop version, but there seem to be so many different flavors of
wiring, it may as well be proprietary at that point.

I've found and reviewed a few dozen of the many, many specifications for
serial communications that are similar to RS232 and can find none that fit
the impression some of the earlier posts gave of having multiple devices
communicating back-and-forth on the same physical RS232 connection. The
talk of sharing connections with boxes that multiplex over an RS232
connection led me to find the products that speak SDLC to a device that
then communicates with a set of RS232 devices. I hardly think that is the
same thing, since although a single RS232 is required on the computer, it
is not speaking directly to the devices on the other end.

I looked up the Bisync protocol as well as the Uniscope equipment. It looks
like although they did use what is called RS232 connectors and wiring, they
did not follow the specification, so standards complient RS232 devices
wouldn't work in a multi-drop setting.

In summary, it seems that a degree of liberty in the use of the terms and
standards results in confusion and folks arguing across each other. There
is a large difference between what might be possible over wiring that
otherwise conforms to RS232 but is unrelated to the standard which is a
point-to-point standard for linking two devices. Then if you overlay
proprietary protocols as used by Uniscope, IBM, et.al along with the many
almost RS232 standards and we get the situation where some insist that
RS232 supports multi-point networking while others claim it doesn't. I
think the bottom line is that any fancy connections (beyond what Elecraft
specifies) between Elecraft devices will need additional software and/or
hardware to support.

Some of the references I used:

   - RS232 connectors and wiring

   - IIT course on Serial Communications

   - Blackbox RS232 connection sharing devices

   - IBM SDLC protocol concepts

   - IBM SDLC communications adapter manual

   - List of some Network Bus standards

   - EIA RS232 V24 standard

With a hurting brain,
73 - Brendon
KK6AYI

On Mon, Feb 11, 2019 at 2:51 PM Michael Blake via Elecraft <
elecraft@mailman.qth.net> wrote:

> Andy, in support of your comments I was an active Bell System DATEC
> representative back in the 70s and 80s and multipoint polled RS-232 was
> very common here in the colonies :)
>
> Michael Blake
> k9...@mac.com 
>
>
>
>
>
>
> > On Feb 11, 2019, at 4:54 PM, Andy McMullin  wrote:
> >
> > Not wishing to get into an argument but consider Binary-Synch, Uniscope
> or UTS400 protocols. They are poll and response, RS232c communications
> systems. Used from mainframe to (dumb) terminal. They are synchronous RS232
> of course rather than asynch and so use the clock and other signals ignored
> by the [IBM PC]

[Elecraft] KPA500 120 VAC transient response

2019-02-16 Thread Andy Durbin

I experienced a very brief power transient on my house 120 VAC supply.  My 
KAT500 remained powered but my KPA500 dropped off with the fan running.   No 
real concern about either response.  What was a surprise was that my setting 
for Band Change - NORM had reverted to Band Change - STBY.   This setting had 
been changed several days previously and the KPA500 had not been power cycled 
until the unexpected power transient.

When are changes to KPA500 menu settings saved to NVM?  What I observed would 
be explained if settings are not saved until normal power down.  If the 
settings should be saved at the time they are made I'd like to know why this 
setting was not remembered.

Thanks and 73,
Andy, k3wyc
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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Gary K9GS

That's about the silliest thing I've ever heard.Really, DIN connectors on a 
radio?73,Gary K9GS
 Original message From: John Stengrevics 
 Date: 2/16/19  2:55 PM  (GMT-06:00) To: 
j...@audiosystemsgroup.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] 
KPA-1500 failed! Who uses PL-259s?  They suck.  I ordered my K3S with Ns and 
really should have specified DINs.  But, that is a retrofit project for another 
day.JohnWA1EAZ> On Feb 16, 2019, at 2:47 PM, Jim Brown 
 wrote:> > On 2/16/2019 9:39 AM, Bob McGraw K4TAX 
wrote:>> Do not trust PL-259 connectors installed only "finger tight". Today 
many of those PL-259 connectors "look good" but are really poor quality 
connectors.> > If you live in North America, the ONLY good PL-259 connector is 
one that labeled Amphenol 83-1SP.  Most others are JUNK.  I'm told there are 
some other decent brands sold in EU.> >> ALWAYS snug the PL-259's with a pair 
of 4" channel lock pliers.> > RIGHT. And always be VERY careful about how you 
solder them, especially the shield.> > 73, Jim K9YC> > 
__> 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 
jstengrevics@comcast.net__Elecraft
 mailing listHome: http://mailman.qth.net/mailman/listinfo/elecraftHelp: 
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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread riese-k3djc

https://en.wikipedia.org/wiki/UHF_connector


On Sat, 16 Feb 2019 14:19:48 -0700 Wes  writes:
> Thousands of people; without issue.
> 
> Wes  N7WS
> 
> On 2/16/2019 1:55 PM, John Stengrevics wrote:
> > Who uses PL-259s?
> 
> __
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> Message delivered to riese-k3...@juno.com

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Re: [Elecraft] Elecraft Digest, Vol 178, Issue 14

2019-02-16 Thread silver60

Amazing isn't it Hugh? What hypricrits 


-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of elecraft-requ...@mailman.qth.net
Sent: Saturday, February 16, 2019 6:25 PM
To: elecraft@mailman.qth.net
Subject: Elecraft Digest, Vol 178, Issue 14

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Today's Topics:

   1. KX3 and SDR IQ ( Spectravue) question (Viggo Magnus Nilsen Nilsen)
   2. Re: KPA1500 Failed (Dave Agsten)
   3. W8ZR Station Pro I for K3/K2 (cx...@4email.net)
   4.  KPA-1500 failed! (j...@kk9a.com)
   5. Re: KPA-1500 failed! (Bob McGraw K4TAX)
   6. Re: KPA-1500 failed! (Eric Swartz - WA6HHQ, Elecraft)
   7. Re: KPA3A Failure & related (Bob McGraw K4TAX)
   8. Re: KPA-1500 failed! (Peter Dougherty)
   9. Re: KPA-1500 failed! (Jim Brown)
  10. Re: KPA-1500 failed! (John Stengrevics)
  11. Re: KPA-1500 failed! (Wes)
  12. Re: KPA3A Failure & related (Don Wilhelm)
  13. Re: KPA-1500 failed! (Peter Dougherty)
  14. Re: KX3 and SDR IQ ( Spectravue) question (Don Wilhelm)
  15. Re: KPA-1500 failed! (Jorge Diez - CX6VM)
  16. Searching for Noise (i.e., Samples Thereof) (Wayne Burdick)
  17. Re: KPA-1500 failed! (Drew AF2Z)
  18. Re: KPA-1500 failed! (j...@kk9a.com)
  19. Re: KPA-1500 failed! (hawley, charles j jr)
  20. Re: Removing/connecting PL-259s (Don Wilhelm)


--

Message: 1
Date: Sat, 16 Feb 2019 18:03:44 +0100
From: Viggo Magnus Nilsen Nilsen 
To: elecraft@mailman.qth.net
Subject: [Elecraft] KX3 and SDR IQ ( Spectravue) question
Message-ID:

Content-Type: text/plain; charset="UTF-8"

Hello Elecrafters.,

Have some of you connected an SDR IQ to the KX3,, ( use as an Panadapter
with Spectravue) ?

Work very well with the K3

73' Viggo  LA9NEA.,

KX3,K3 and KPA500 owner.


--

Message: 2
Date: Sat, 16 Feb 2019 12:03:40 -0500
From: Dave Agsten 
To: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA1500 Failed
Message-ID: <556893a8-794e-4910-95b5-0af1a1fd0...@email.android.com>
Content-Type: text/plain; charset="utf-8"



--

Message: 3
Date: Sat, 16 Feb 2019 12:26:33 -0500
From: cx...@4email.net
To: elecraft@mailman.qth.net
Subject: [Elecraft] W8ZR Station Pro I for K3/K2
Message-ID: 
Content-Type: text/plain; charset=utf-8

Selling master station controller which integrates the switching and
control functions of amateur stations consisting of two transceivers (or
receiver/transmitter pairs)+ two linear amps. See
W8ZR.net/stationpro/index.htm or review in QST August 2010 for complete
description.

Handles legal limit up to 30MHz and 800w @ 54MHz. Works great with
modern and boat anchor rigs. Complete with cables and two breakout pods.
You supply 12v wall wart. Pictures on request. Shipped CONUS $285 from FL.
Tom, K2GO/HP1XT
305-767-1927


--

Message: 4
Date: Sat, 16 Feb 2019 12:35:10 -0500
From: 
To: 
Subject: [Elecraft]  KPA-1500 failed!
Message-ID: <004201d4c61d$f7dc53f0$e794fbd0$@com>
Content-Type: text/plain;   charset="us-ascii"

Sorry to hear this happen Peter, especially during a contes. LDMOS devices
are suppose to be pretty tough and the KPA1500 is not pushing their limits.
There are videos of a different LDMOS showing it to be indestructible:
https://www.youtube.com/watch?v=8ziYqjMQGEQ  Is the KPA1500 cooling and heat
sink adequate?  Personally if I owned this amp I would leave the fan on at a
tolerable speed 100% of the time.  Did you use the amp during the RTTY
contest last weekend?

John KK9A


Paul Baldock wrote: 

It sounds like one of the output devices have failed. Half power out 
is usually the indicator. A number here have reported this happening. 
It would be nice to know why this problem is occurring and if 
Elecraft are working on a fix.

- Paul
>
>On 2/16/2019 7:28 AM, lists at w2irt.net wrote:
> > I was operating in the ARRL-CW contest this morning and on 20m, with a
> > 1.2:1 SWR on the Yagi, all of a sudden I saw my power drop to about
> > 450-500W with about 40W in. Worked a few stations but not as easily as
> > when I turned everything on this morning. Switched over to phone 
> and made a few contacts.
> > Audio is fine barefoot with 100W out of the K3s-which suffered blown
> > finals itself during CQWW SSB last fall, but with the amp in I got
> > reports that my audio was badly distorted.
> >
> > Before I send it in, is there anything I should look at or any
> > diagnostics I can easily perform? For the cost of this, I'd have
> >

Re: [Elecraft] Removing/connecting PL-259s

2019-02-16 Thread Don Wilhelm


Drew and all,

I have changed the subject line to something more akin to the current 
discussion.


Have you considered adding a coax switch?  Turning to switch to an open 
position (or better yet to a dummy load) when the radio is not in use 
will provide protection and is a lot easier than removing the connectors.


73,
Don W3FPR

On 2/16/2019 6:07 PM, Drew AF2Z wrote:
FWIW, I use NO-OX-ID contact grease on my PL259 connectors. This allows 
very tight snugging by hand, no need of wrenching.


During lightning season I frequently connect/disconnect my rig and tuner 
cables. The fine film of lube on the connector threads makes a big 
difference. Without it? A real PITA, not to mention wear and tear on the 
the SO-239's.

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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread hawley, charles j jr

I never wrench. I just wiggle the connector as I tighten it and it tightens 
down into the v grooves tightly. Almost have to use a pliers to unscrew it.

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

 Amateur Radio, KE9UW
 aka Jack, BMW Motorcycles


From: elecraft-boun...@mailman.qth.net  on 
behalf of Drew AF2Z 
Sent: Saturday, February 16, 2019 5:07 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA-1500 failed!

FWIW, I use NO-OX-ID contact grease on my PL259 connectors. This allows
very tight snugging by hand, no need of wrenching.

During lightning season I frequently connect/disconnect my rig and tuner
cables. The fine film of lube on the connector threads makes a big
difference. Without it? A real PITA, not to mention wear and tear on the
the SO-239's.

73,
Drew
AF2Z





On 02/16/19 14:08, Peter Dougherty wrote:
> I agree with you re PL-259s. I follow best practices in this regard. 
> Quarter-turn with channel-locks after finger tight, Amphenol 83-1SP, 
> assembled correctly, with cables swept by a TDR.
>
>   - pjd
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net  On 
> Behalf Of Bob McGraw K4TAX
> Sent: Saturday, February 16, 2019 12:39 PM
> To: elecraft@mailman.qth.net; wrayplace 
> Subject: Re: [Elecraft] KPA-1500 failed!
>
> Do not trust PL-259 connectors installed only "finger tight". Today many of 
> those PL-259 connectors "look good" but are really poor quality connectors.   
>  ALWAYS snug the PL-259's with a pair of 4" channel lock pliers.   You'd be 
> amazed how many strange issues will go away.
>
> Not saying this is or was the cause of failure, but I've seen it and 
> experienced it too many times.
>
> Also, for other reasons, I run the ALC from my KPA500 to my K3S. Again, 
> another issue of concern resolved.
>
> 73
>
> Bob, K4TAX
>
>
> On 2/16/2019 10:13 AM, Dave wrote:
>> His radio blew one final while driving the KPA1500 in the fall.
>>
>> Now his amp blew one LDMOS.
>>
>> I’ve been to Peter’s house and used a TDR to check all of his antennas, 
>> cabling, and switching. Cable connectors replaced last year.
>>
>> I agree it is good idea to check everything again. Looking at the amp fault 
>> log today did not show signs of anything arcing
>>
>> Dave wo2x
>>
>> Sent from my waxed string and tin cans.
>>
>>> On Feb 16, 2019, at 11:01 AM, Mark Goldberg  wrote:
>>>
>>> It's been said there are no coincidences. Have you checked your coaxes / 
>>> connectors? I agree that protection built in should not allow radios to 
>>> blow finals, but this sounds like too much of a coincidence with two 
>>> different radios blowing to not be an external intermittent connection. Try 
>>> wiggling all the cables with low power. Unfortunately, sometimes a problem 
>>> will only show up as arcing at high power. Is there another HAM near you 
>>> with a powerful amp and antenna close to yours?
>>>
>>> Best of luck,
>>>
>>> Mark
>>> W7MLG
>>>
>>>
 On Sat, Feb 16, 2019 at 8:50 AM  wrote:
 Exact same thing happened to my K3s in October, now my KPA-1500. Yeah, So
 done here. Once repaired and confirmed working it will be up for sale. 
 Going
 back to a tube amp after this.

- pjd

 -Original Message-
 From: elecraft-boun...@mailman.qth.net  
 On
 Behalf Of Paul Baldock
 Sent: Saturday, February 16, 2019 10:28 AM
 To: rocke...@gmail.com; elecraft@mailman.qth.net
 Subject: Re: [Elecraft] KPA-1500 failed!

 It sounds like one of the output devices have failed. Half power out is
 usually the indicator. A number here have reported this happening.
 It would be nice to know why this problem is occurring and if Elecraft are
 working on a fix.

 - Paul

 At 07:10 AM 2/16/2019, rocke...@gmail.com wrote:
> I talked to Peter on the phone. He has no bias current when amp is
> transmitting with no power applied (key on SSB without talking. He is
> reading 54 volts and has tried power cycling amp from power supply
> switch and reseated all cables. Definitely BAD distortion on SSB (we
> are close enough to hear each other). Looks like one RF device let
> loose and it is dragging down the bias voltage. That is my guess.
>
> Dave wo2x
>
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
>  On Behalf Of Wes
> Sent: Saturday, February 16, 2019 9:49 AM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] KPA-1500 failed!
>
> I think a two-tone test is the best evaluation tool..  The generator is
> built into the K3 if you have another receiver that you can use to
> listen to the amp output.  I use an SDR-IQ which is a very nice tool
> for this but any other SDR would do.
>
> Sorry for your pain.
>
> Wes  N7WS
>
> On 2/16/2019 7:28 AM, li...@w2irt.net wrote:
>> I was operating in the ARRL-CW contest this morning and on 20m, with

Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread john

Amphenol 83-1SP connectors are great however I have a number of Andrew
44ASP, L44P and L45P connectors in my system and I also consider to be very
high quality UHF connectors.

John KK9A



Jim Brown jim at audiosystemsgroup.com 

If you live in North America, the ONLY good PL-259 connector is one that 
labeled Amphenol 83-1SP.  Most others are JUNK.  I'm told there are some 
other decent brands sold in EU.

73, Jim K9YC

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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Drew AF2Z

FWIW, I use NO-OX-ID contact grease on my PL259 connectors. This allows 
very tight snugging by hand, no need of wrenching.


During lightning season I frequently connect/disconnect my rig and tuner 
cables. The fine film of lube on the connector threads makes a big 
difference. Without it? A real PITA, not to mention wear and tear on the 
the SO-239's.


73,
Drew
AF2Z





On 02/16/19 14:08, Peter Dougherty wrote:

I agree with you re PL-259s. I follow best practices in this regard. 
Quarter-turn with channel-locks after finger tight, Amphenol 83-1SP, assembled 
correctly, with cables swept by a TDR.
  
  - pjd


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Bob McGraw K4TAX
Sent: Saturday, February 16, 2019 12:39 PM
To: elecraft@mailman.qth.net; wrayplace 
Subject: Re: [Elecraft] KPA-1500 failed!

Do not trust PL-259 connectors installed only "finger tight". Today many of those PL-259 
connectors "look good" but are really poor quality connectors.ALWAYS snug the PL-259's 
with a pair of 4" channel lock pliers.   You'd be amazed how many strange issues will go away.

Not saying this is or was the cause of failure, but I've seen it and 
experienced it too many times.

Also, for other reasons, I run the ALC from my KPA500 to my K3S. Again, another 
issue of concern resolved.

73

Bob, K4TAX


On 2/16/2019 10:13 AM, Dave wrote:

His radio blew one final while driving the KPA1500 in the fall.

Now his amp blew one LDMOS.

I’ve been to Peter’s house and used a TDR to check all of his antennas, 
cabling, and switching. Cable connectors replaced last year.

I agree it is good idea to check everything again. Looking at the amp fault log 
today did not show signs of anything arcing

Dave wo2x

Sent from my waxed string and tin cans.


On Feb 16, 2019, at 11:01 AM, Mark Goldberg  wrote:

It's been said there are no coincidences. Have you checked your coaxes / 
connectors? I agree that protection built in should not allow radios to blow 
finals, but this sounds like too much of a coincidence with two different 
radios blowing to not be an external intermittent connection. Try wiggling all 
the cables with low power. Unfortunately, sometimes a problem will only show up 
as arcing at high power. Is there another HAM near you with a powerful amp and 
antenna close to yours?

Best of luck,

Mark
W7MLG



On Sat, Feb 16, 2019 at 8:50 AM  wrote:
Exact same thing happened to my K3s in October, now my KPA-1500. Yeah, So
done here. Once repaired and confirmed working it will be up for sale. Going
back to a tube amp after this.

   - pjd

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Paul Baldock
Sent: Saturday, February 16, 2019 10:28 AM
To: rocke...@gmail.com; elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA-1500 failed!

It sounds like one of the output devices have failed. Half power out is
usually the indicator. A number here have reported this happening.
It would be nice to know why this problem is occurring and if Elecraft are
working on a fix.

- Paul

At 07:10 AM 2/16/2019, rocke...@gmail.com wrote:

I talked to Peter on the phone. He has no bias current when amp is
transmitting with no power applied (key on SSB without talking. He is
reading 54 volts and has tried power cycling amp from power supply
switch and reseated all cables. Definitely BAD distortion on SSB (we
are close enough to hear each other). Looks like one RF device let
loose and it is dragging down the bias voltage. That is my guess.

Dave wo2x


-Original Message-
From: elecraft-boun...@mailman.qth.net
 On Behalf Of Wes
Sent: Saturday, February 16, 2019 9:49 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA-1500 failed!

I think a two-tone test is the best evaluation tool..  The generator is
built into the K3 if you have another receiver that you can use to
listen to the amp output.  I use an SDR-IQ which is a very nice tool
for this but any other SDR would do.

Sorry for your pain.

Wes  N7WS

On 2/16/2019 7:28 AM, li...@w2irt.net wrote:

I was operating in the ARRL-CW contest this morning and on 20m, with
a
1.2:1 SWR on the Yagi, all of a sudden I saw my power drop to about
450-500W with about 40W in. Worked a few stations but not as easily
as when I turned everything on this morning. Switched over to phone

and made a few contacts.

Audio is fine barefoot with 100W out of the K3s-which suffered blown
finals itself during CQWW SSB last fall, but with the amp in I got
reports that my audio was badly distorted.

Before I send it in, is there anything I should look at or any
diagnostics I can easily perform? For the cost of this, I'd have
thought protection would have kicked in to prevent anything untoward
from happening. I'm in complete disbelief, to be honest.

-
73 and Good DX
Peter, W2IRT


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[Elecraft] Searching for Noise (i.e., Samples Thereof)

2019-02-16 Thread Wayne Burdick

As time permits, we're trying to better characterize the RF noise that plagues 
stations at various locations. 

So far, data collected during this informal survey has taken the form of verbal 
descriptions. Scope traces or digitized samples would be much more helpful, 
since they'd show the actual waveforms. We could then look at how to better 
suppress the noise profiles, pulse widths, and rep rates encountered by 
stations surrounded by modern appliances, vehicles, peripherals, lighting, etc. 
Many of these didn't exist decades ago when the first noise blankers were 
designed.

On a K3 or K3S, the best place to capture noise signals would be at the output 
of the first MC1350 in the KNB3's amplifier chain. In the presence of strong 
noise, the signal at this point is likely to produce a visible scope trace, or 
a good sample using an RF digitizer. The latter would have to do a good job at 
the IF, 8.215 MHz.

On a KX3, the RX IQ outputs should work, assuming the noise signal is quite 
strong. As the RX IQ signal occurs at base band, a much lower-bandwidth scope 
or an audio-class A-to-D converter would suffice. 

Spectral data would also be of use in both cases.

I don't have any specific recommendations for equipment or software. But if you 
have the means in hand, as well as a noise problem worth capturing, feel free 
to contact me directly. Please include photos or screen captures as well as 
details on what remediation techniques work -- and don't.

73,
Wayne
N6KR

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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Jorge Diez - CX6VM

Guys

the problem here is not who use PL259 or what coaxial is using. I think
Peter and most of us, and mostly if you do contests, is not that, we are
using good coax and connectors over the years and no problem with other
radios or amplifiers, thats what Peter said.

If you are in a contest, you prepear your station to not fail. Robust
radios and amplifiers, not only pretty ones

Hopefully guys in USA will have this problem solved *easily*

But what about if you dont live in USA?  I didnt buy Expert 1.3K amplifier
because many owners told me about it´s fail. Is very expensive and dificult
to deal with customs to take it to USA and back to Uruguay to repair it.

So, KPA1500 is a robust amplifier?  Of course always will be a problem, but
is 1% or 25% of the cases?

And I dont want parts sent by Elecraft to fix it, I want an amp that not
fail

73,
Jorge
CX6VM/CW5W

El sáb., 16 feb. 2019 a las 18:20, Wes () escribió:

> Thousands of people; without issue.
>
> Wes  N7WS
>
> On 2/16/2019 1:55 PM, John Stengrevics wrote:
> > Who uses PL-259s?
>
> __
> 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 cx6vm.jo...@gmail.com

-- 
73,
Jorge
CX6VM/CW5W
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Re: [Elecraft] KX3 and SDR IQ ( Spectravue) question

2019-02-16 Thread Don Wilhelm


Viggo,

How do you propose to connect the SDR IQ to the KX3?
The KX3 does not have an IF output - in fact the KX3 IF is either at 
baseband or 8kHz if you turn on the 8kHz shift in the menu.


The KX3 DOES have the RX I/Q output which you can connect to a computer 
soundcard or the KX3 for a panadapter display.


Yes, the SDR IQ works fine with the K3 which has an IF output at 8.215MHz.

73,
Don W3FPR

On 2/16/2019 12:03 PM, Viggo Magnus Nilsen Nilsen wrote:

Hello Elecrafters.,

Have some of you connected an SDR IQ to the KX3,, ( use as an Panadapter
with Spectravue) ?

Work very well with the K3

73' Viggo  LA9NEA.,

KX3,K3 and KPA500 owner.
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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Peter Dougherty

I don't contest in RTTY (I don't use that mode other than for Dxpeditions)
and rarely even do FT8. I mostly operate CW and a bit of SSB and that's it. 

I have no idea why it would fail. I did have some issues in the past with
antennas going stupid on me or the HF-Auto tuner failing to match when it
was supposed to, but those always hard-faulted instantly. I never attempted
to push RF through more than about a 2:1 without a tuner, and for CW, all my
antennas are resonant on the bottom of all the bands. That it happened on 20
where I'm about 1.2:1 is very strange.

 - pjd

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of j...@kk9a.com
Sent: Saturday, February 16, 2019 12:35 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KPA-1500 failed!

Sorry to hear this happen Peter, especially during a contes. LDMOS devices
are suppose to be pretty tough and the KPA1500 is not pushing their limits.
There are videos of a different LDMOS showing it to be indestructible:
https://www.youtube.com/watch?v=8ziYqjMQGEQ  Is the KPA1500 cooling and heat
sink adequate?  Personally if I owned this amp I would leave the fan on at a
tolerable speed 100% of the time.  Did you use the amp during the RTTY
contest last weekend?

John KK9A

Paul Baldock wrote: 

It sounds like one of the output devices have failed. Half power out is
usually the indicator. A number here have reported this happening. 
It would be nice to know why this problem is occurring and if Elecraft are
working on a fix.

- Paul
>
>On 2/16/2019 7:28 AM, lists at w2irt.net wrote:
> > I was operating in the ARRL-CW contest this morning and on 20m, with 
> > a
> > 1.2:1 SWR on the Yagi, all of a sudden I saw my power drop to about 
> > 450-500W with about 40W in. Worked a few stations but not as easily 
> > as when I turned everything on this morning. Switched over to phone
> and made a few contacts.
> > Audio is fine barefoot with 100W out of the K3s-which suffered blown 
> > finals itself during CQWW SSB last fall, but with the amp in I got 
> > reports that my audio was badly distorted.
> >
> > Before I send it in, is there anything I should look at or any 
> > diagnostics I can easily perform? For the cost of this, I'd have 
> > thought protection would have kicked in to prevent anything untoward 
> > from happening. I'm in complete disbelief, to be honest.
> >
> > -
> > 73 and Good DX
> > Peter, W2IRT

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Re: [Elecraft] KPA3A Failure & related

2019-02-16 Thread Don Wilhelm


Bob and all,

I think this problem is not so much with the amplifier, but the K3/K3S.
Consider that the switchover from the low power amplifier to the KPA3 is 
in the 12 to 15 watt range.  That is where the LPA is generating about 
all the power it can produce.  Above that range, the KPA3 kicks in and 
everything is "loafing along".


Oh yes, aside from that, some amplifiers do fail for various reasons - 
and I think we are mixing failures of the K3/K3S with amplifier failures 
in this thread.


73,
Don W3FPR

On 2/16/2019 1:43 PM, Bob McGraw K4TAX wrote:
This discussion has risen its nasty head earlier.  Wes and I exchanged 
several private e-mails on the topic.  Here is what I've learned:


My purchased new from the factory my K3S -100 in August of 2015. With it 
I drove my AL-80B with 60 to 80 watts for some two years.   Absolute no 
issues of concern.    In April of 2018 I purchased a new KPA500 and put 
it in place of the AL-80B.   I drove the KPA500 with my K3S at 15 watts 
for some 2 weeks.  Then reports of "fuzzy audio" surfaced.  The 2 tone 
test revealed excessive IMD.  I contacted Tech Support and they arranged 
to send me a LPA3 and a KPA3A.   These were installed and all was well 
for about one week.  Then again the reports of "fuzzy audio".  I 
contacted Tech Support again and they said "send it in".   The service 
report indicated they replaced the KPA3A with a rev E which is reported 
to be more stable.  An interesting comment on the Elecraft Service 
report; "Due to failure of the stable rev E amp, this indicates 
something in the shack.   Possible kickback from and amplifier.   It is 
likely to happen again if the root cause is not found. " 
UGH...folks, the amp is a KPA500! >> HOUSTON - DO WE HAVE A PROBLEM?>>


In the discussions via e-mail and here on the reflector which followed, 
I learned of others which experienced the same type issues.  I asked 
"what's the solution".   Interestingly the answer came back [I don't 
recall from whom}  "stay away from 15 watts". Since then I have driven 
my KPA500 with 20 watts .PLUS  I have connected and engaged the ALC 
from the KPA500 to my K3S.  This is a menu item in the K3S.  Now some 
may not like the ALC connection and activation.


My thinking is that IF there are any spikes originated with the rise of 
the CW signal or voice signal this may overdrive the amp.   With my P3 I 
see this A LOT on SSB signals on the bands which exhibit initial ALC 
overshoot.  This is both on CW and SSB.    Makes me wonder what does the 
input impedance of the KPA500 does when hit with a millisecond or so of 
excessive drive?   Not long enough to activate the attenuator or throw a 
fault signal. I do know that tube amps reflect to their input the 
effective tuning of the output.   Could this be an issue with solid 
state amps where the input impedance goes to zero thus placing in effect 
short on the driving transceiver?   Mind you not long enough to throw a 
fault signal butwhat does it do to the driving stage?     I've 
not measured it and am not exactly sure how to accomplish this.  It may 
not be the issue at all.   Perhaps some of you more technical gurus can 
expound further on the topic.


I do know factually since the change to the KPA3A  rev E, and I 
activated the ALC between the KPA500 and my K3S the issue has not reared 
its ugly head.   Lets hope it doesn't.


All in all, I am VERY pleased with Elecraft Tech support and extremely 
pleased with my K3S, P3, KPA500 and KAT500.  A winning combination. But 
I'm still walking on eggs  and hoping none break.


73

Bob, K4TAX

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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Wes


Thousands of people; without issue.

Wes  N7WS

On 2/16/2019 1:55 PM, John Stengrevics wrote:

Who uses PL-259s?


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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread John Stengrevics

Who uses PL-259s?  They suck.  I ordered my K3S with Ns and really should have 
specified DINs.  But, that is a retrofit project for another day.

John
WA1EAZ

> On Feb 16, 2019, at 2:47 PM, Jim Brown  wrote:
> 
> On 2/16/2019 9:39 AM, Bob McGraw K4TAX wrote:
>> Do not trust PL-259 connectors installed only "finger tight". Today many of 
>> those PL-259 connectors "look good" but are really poor quality connectors.
> 
> If you live in North America, the ONLY good PL-259 connector is one that 
> labeled Amphenol 83-1SP.  Most others are JUNK.  I'm told there are some 
> other decent brands sold in EU.
> 
>> ALWAYS snug the PL-259's with a pair of 4" channel lock pliers.
> 
> RIGHT. And always be VERY careful about how you solder them, especially the 
> shield.
> 
> 73, Jim K9YC
> 
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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Jim Brown


On 2/16/2019 9:39 AM, Bob McGraw K4TAX wrote:
Do not trust PL-259 connectors installed only "finger tight". Today 
many of those PL-259 connectors "look good" but are really poor 
quality connectors.


If you live in North America, the ONLY good PL-259 connector is one that 
labeled Amphenol 83-1SP.  Most others are JUNK.  I'm told there are some 
other decent brands sold in EU.



ALWAYS snug the PL-259's with a pair of 4" channel lock pliers.


RIGHT. And always be VERY careful about how you solder them, especially 
the shield.


73, Jim K9YC

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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Peter Dougherty

I agree with you re PL-259s. I follow best practices in this regard. 
Quarter-turn with channel-locks after finger tight, Amphenol 83-1SP, assembled 
correctly, with cables swept by a TDR.
 
 - pjd

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Bob McGraw K4TAX
Sent: Saturday, February 16, 2019 12:39 PM
To: elecraft@mailman.qth.net; wrayplace 
Subject: Re: [Elecraft] KPA-1500 failed!

Do not trust PL-259 connectors installed only "finger tight". Today many of 
those PL-259 connectors "look good" but are really poor quality connectors.
ALWAYS snug the PL-259's with a pair of 4" channel lock pliers.   You'd be 
amazed how many strange issues will go away.

Not saying this is or was the cause of failure, but I've seen it and 
experienced it too many times.

Also, for other reasons, I run the ALC from my KPA500 to my K3S. Again, another 
issue of concern resolved.

73

Bob, K4TAX


On 2/16/2019 10:13 AM, Dave wrote:
> His radio blew one final while driving the KPA1500 in the fall.
>
> Now his amp blew one LDMOS.
>
> I’ve been to Peter’s house and used a TDR to check all of his antennas, 
> cabling, and switching. Cable connectors replaced last year.
>
> I agree it is good idea to check everything again. Looking at the amp fault 
> log today did not show signs of anything arcing
>
> Dave wo2x
>
> Sent from my waxed string and tin cans.
>
>> On Feb 16, 2019, at 11:01 AM, Mark Goldberg  wrote:
>>
>> It's been said there are no coincidences. Have you checked your coaxes / 
>> connectors? I agree that protection built in should not allow radios to blow 
>> finals, but this sounds like too much of a coincidence with two different 
>> radios blowing to not be an external intermittent connection. Try wiggling 
>> all the cables with low power. Unfortunately, sometimes a problem will only 
>> show up as arcing at high power. Is there another HAM near you with a 
>> powerful amp and antenna close to yours?
>>
>> Best of luck,
>>
>> Mark
>> W7MLG
>>
>>
>>> On Sat, Feb 16, 2019 at 8:50 AM  wrote:
>>> Exact same thing happened to my K3s in October, now my KPA-1500. Yeah, So
>>> done here. Once repaired and confirmed working it will be up for sale. Going
>>> back to a tube amp after this.
>>>
>>>   - pjd
>>>
>>> -Original Message-
>>> From: elecraft-boun...@mailman.qth.net  On
>>> Behalf Of Paul Baldock
>>> Sent: Saturday, February 16, 2019 10:28 AM
>>> To: rocke...@gmail.com; elecraft@mailman.qth.net
>>> Subject: Re: [Elecraft] KPA-1500 failed!
>>>
>>> It sounds like one of the output devices have failed. Half power out is
>>> usually the indicator. A number here have reported this happening.
>>> It would be nice to know why this problem is occurring and if Elecraft are
>>> working on a fix.
>>>
>>> - Paul
>>>
>>> At 07:10 AM 2/16/2019, rocke...@gmail.com wrote:
 I talked to Peter on the phone. He has no bias current when amp is
 transmitting with no power applied (key on SSB without talking. He is
 reading 54 volts and has tried power cycling amp from power supply
 switch and reseated all cables. Definitely BAD distortion on SSB (we
 are close enough to hear each other). Looks like one RF device let
 loose and it is dragging down the bias voltage. That is my guess.

 Dave wo2x


 -Original Message-
 From: elecraft-boun...@mailman.qth.net
  On Behalf Of Wes
 Sent: Saturday, February 16, 2019 9:49 AM
 To: elecraft@mailman.qth.net
 Subject: Re: [Elecraft] KPA-1500 failed!

 I think a two-tone test is the best evaluation tool..  The generator is
 built into the K3 if you have another receiver that you can use to
 listen to the amp output.  I use an SDR-IQ which is a very nice tool
 for this but any other SDR would do.

 Sorry for your pain.

 Wes  N7WS

 On 2/16/2019 7:28 AM, li...@w2irt.net wrote:
> I was operating in the ARRL-CW contest this morning and on 20m, with
> a
> 1.2:1 SWR on the Yagi, all of a sudden I saw my power drop to about
> 450-500W with about 40W in. Worked a few stations but not as easily
> as when I turned everything on this morning. Switched over to phone
 and made a few contacts.
> Audio is fine barefoot with 100W out of the K3s-which suffered blown
> finals itself during CQWW SSB last fall, but with the amp in I got
> reports that my audio was badly distorted.
>
> Before I send it in, is there anything I should look at or any
> diagnostics I can easily perform? For the cost of this, I'd have
> thought protection would have kicked in to prevent anything untoward
> from happening. I'm in complete disbelief, to be honest.
>
> -
> 73 and Good DX
> Peter, W2IRT
>
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 Home: http://mailman.qth.net/mailman/listinfo/elecraft
 Help:

Re: [Elecraft] KPA3A Failure & related

2019-02-16 Thread Bob McGraw K4TAX

This discussion has risen its nasty head earlier.  Wes and I exchanged 
several private e-mails on the topic.  Here is what I've learned:


My purchased new from the factory my K3S -100 in August of 2015. With it 
I drove my AL-80B with 60 to 80 watts for some two years.   Absolute no 
issues of concern.    In April of 2018 I purchased a new KPA500 and put 
it in place of the AL-80B.   I drove the KPA500 with my K3S at 15 watts 
for some 2 weeks.  Then reports of "fuzzy audio" surfaced.  The 2 tone 
test revealed excessive IMD.  I contacted Tech Support and they arranged 
to send me a LPA3 and a KPA3A.   These were installed and all was well 
for about one week.  Then again the reports of "fuzzy audio".  I 
contacted Tech Support again and they said "send it in".   The service 
report indicated they replaced the KPA3A with a rev E which is reported 
to be more stable.  An interesting comment on the Elecraft Service 
report; "Due to failure of the stable rev E amp, this indicates 
something in the shack.   Possible kickback from and amplifier.   It is 
likely to happen again if the root cause is not found. "    
UGH...folks, the amp is a KPA500! >> HOUSTON - DO WE HAVE A PROBLEM?>>


In the discussions via e-mail and here on the reflector which followed, 
I learned of others which experienced the same type issues.  I asked 
"what's the solution".   Interestingly the answer came back [I don't 
recall from whom}  "stay away from 15 watts". Since then I have driven 
my KPA500 with 20 watts .PLUS  I have connected and engaged the ALC 
from the KPA500 to my K3S.  This is a menu item in the K3S.  Now some 
may not like the ALC connection and activation.


My thinking is that IF there are any spikes originated with the rise of 
the CW signal or voice signal this may overdrive the amp.   With my P3 I 
see this A LOT on SSB signals on the bands which exhibit initial ALC 
overshoot.  This is both on CW and SSB.    Makes me wonder what does the 
input impedance of the KPA500 does when hit with a millisecond or so of 
excessive drive?   Not long enough to activate the attenuator or throw a 
fault signal. I do know that tube amps reflect to their input the 
effective tuning of the output.   Could this be an issue with solid 
state amps where the input impedance goes to zero thus placing in effect 
short on the driving transceiver?   Mind you not long enough to throw a 
fault signal butwhat does it do to the driving stage?     I've 
not measured it and am not exactly sure how to accomplish this.  It may 
not be the issue at all.   Perhaps some of you more technical gurus can 
expound further on the topic.


I do know factually since the change to the KPA3A  rev E, and I 
activated the ALC between the KPA500 and my K3S the issue has not reared 
its ugly head.   Lets hope it doesn't.


All in all, I am VERY pleased with Elecraft Tech support and extremely 
pleased with my K3S, P3, KPA500 and KAT500.  A winning combination.   
But I'm still walking on eggs  and hoping none break.


73

Bob, K4TAX



On 2/16/2019 10:24 AM, Wes wrote:

Unfortunately, you're wrong.  My K3S has failed multiple times.  
Fortunately, my KPA500 has not.  I'm not in the market for a KPA1500.


Wes  N7WS




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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Eric Swartz - WA6HHQ, Elecraft

Hi Peter,

I'm sorry to hear about this failure and deeply apologize for the problem. 

I'll follow up with another email to you to diagnose what actually happened. 

In any case we'll deal with it quickly and get your amp repaired asap.

Eric
elecraft.com
_..._



> On Feb 16, 2019, at 6:28 AM,   wrote:
> 
> I was operating in the ARRL-CW contest this morning and on 20m, with a 1.2:1
> SWR on the Yagi, all of a sudden I saw my power drop to about 450-500W with
> about 40W in. Worked a few stations but not as easily as when I turned
> everything on this morning. Switched over to phone and made a few contacts.
> Audio is fine barefoot with 100W out of the K3s-which suffered blown finals
> itself during CQWW SSB last fall, but with the amp in I got reports that my
> audio was badly distorted. 
> 
> Before I send it in, is there anything I should look at or any diagnostics I
> can easily perform? For the cost of this, I'd have thought protection would
> have kicked in to prevent anything untoward from happening. I'm in complete
> disbelief, to be honest.
> 
> -
> 73 and Good DX
> Peter, W2IRT
> 
> 
> 
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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Bob McGraw K4TAX

Do not trust PL-259 connectors installed only "finger tight". Today many 
of those PL-259 connectors "look good" but are really poor quality 
connectors.    ALWAYS snug the PL-259's with a pair of 4" channel lock 
pliers.   You'd be amazed how many strange issues will go away.


Not saying this is or was the cause of failure, but I've seen it and 
experienced it too many times.


Also, for other reasons, I run the ALC from my KPA500 to my K3S.   
Again, another issue of concern resolved.


73

Bob, K4TAX


On 2/16/2019 10:13 AM, Dave wrote:

His radio blew one final while driving the KPA1500 in the fall.

Now his amp blew one LDMOS.

I’ve been to Peter’s house and used a TDR to check all of his antennas, 
cabling, and switching. Cable connectors replaced last year.

I agree it is good idea to check everything again. Looking at the amp fault log 
today did not show signs of anything arcing

Dave wo2x

Sent from my waxed string and tin cans.


On Feb 16, 2019, at 11:01 AM, Mark Goldberg  wrote:

It's been said there are no coincidences. Have you checked your coaxes / 
connectors? I agree that protection built in should not allow radios to blow 
finals, but this sounds like too much of a coincidence with two different 
radios blowing to not be an external intermittent connection. Try wiggling all 
the cables with low power. Unfortunately, sometimes a problem will only show up 
as arcing at high power. Is there another HAM near you with a powerful amp and 
antenna close to yours?

Best of luck,

Mark
W7MLG



On Sat, Feb 16, 2019 at 8:50 AM  wrote:
Exact same thing happened to my K3s in October, now my KPA-1500. Yeah, So
done here. Once repaired and confirmed working it will be up for sale. Going
back to a tube amp after this.

  - pjd

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Paul Baldock
Sent: Saturday, February 16, 2019 10:28 AM
To: rocke...@gmail.com; elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA-1500 failed!

It sounds like one of the output devices have failed. Half power out is
usually the indicator. A number here have reported this happening.
It would be nice to know why this problem is occurring and if Elecraft are
working on a fix.

- Paul

At 07:10 AM 2/16/2019, rocke...@gmail.com wrote:

I talked to Peter on the phone. He has no bias current when amp is
transmitting with no power applied (key on SSB without talking. He is
reading 54 volts and has tried power cycling amp from power supply
switch and reseated all cables. Definitely BAD distortion on SSB (we
are close enough to hear each other). Looks like one RF device let
loose and it is dragging down the bias voltage. That is my guess.

Dave wo2x


-Original Message-
From: elecraft-boun...@mailman.qth.net
 On Behalf Of Wes
Sent: Saturday, February 16, 2019 9:49 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA-1500 failed!

I think a two-tone test is the best evaluation tool..  The generator is
built into the K3 if you have another receiver that you can use to
listen to the amp output.  I use an SDR-IQ which is a very nice tool
for this but any other SDR would do.

Sorry for your pain.

Wes  N7WS

On 2/16/2019 7:28 AM, li...@w2irt.net wrote:

I was operating in the ARRL-CW contest this morning and on 20m, with
a
1.2:1 SWR on the Yagi, all of a sudden I saw my power drop to about
450-500W with about 40W in. Worked a few stations but not as easily
as when I turned everything on this morning. Switched over to phone

and made a few contacts.

Audio is fine barefoot with 100W out of the K3s-which suffered blown
finals itself during CQWW SSB last fall, but with the amp in I got
reports that my audio was badly distorted.

Before I send it in, is there anything I should look at or any
diagnostics I can easily perform? For the cost of this, I'd have
thought protection would have kicked in to prevent anything untoward
from happening. I'm in complete disbelief, to be honest.

-
73 and Good DX
Peter, W2IRT


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[Elecraft] KPA-1500 failed!

2019-02-16 Thread john

Sorry to hear this happen Peter, especially during a contes. LDMOS devices
are suppose to be pretty tough and the KPA1500 is not pushing their limits.
There are videos of a different LDMOS showing it to be indestructible:
https://www.youtube.com/watch?v=8ziYqjMQGEQ  Is the KPA1500 cooling and heat
sink adequate?  Personally if I owned this amp I would leave the fan on at a
tolerable speed 100% of the time.  Did you use the amp during the RTTY
contest last weekend?

John KK9A

Paul Baldock wrote: 

It sounds like one of the output devices have failed. Half power out 
is usually the indicator. A number here have reported this happening. 
It would be nice to know why this problem is occurring and if 
Elecraft are working on a fix.

- Paul
>
>On 2/16/2019 7:28 AM, lists at w2irt.net wrote:
> > I was operating in the ARRL-CW contest this morning and on 20m, with a
> > 1.2:1 SWR on the Yagi, all of a sudden I saw my power drop to about
> > 450-500W with about 40W in. Worked a few stations but not as easily as
> > when I turned everything on this morning. Switched over to phone 
> and made a few contacts.
> > Audio is fine barefoot with 100W out of the K3s-which suffered blown
> > finals itself during CQWW SSB last fall, but with the amp in I got
> > reports that my audio was badly distorted.
> >
> > Before I send it in, is there anything I should look at or any
> > diagnostics I can easily perform? For the cost of this, I'd have
> > thought protection would have kicked in to prevent anything untoward
> > from happening. I'm in complete disbelief, to be honest.
> >
> > -
> > 73 and Good DX
> > Peter, W2IRT

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[Elecraft] W8ZR Station Pro I for K3/K2

2019-02-16 Thread cx7tt

Selling master station controller which integrates the switching and
control functions of amateur stations consisting of two transceivers (or
receiver/transmitter pairs)+ two linear amps. See
W8ZR.net/stationpro/index.htm or review in QST August 2010 for complete
description.

Handles legal limit up to 30MHz and 800w @ 54MHz. Works great with
modern and boat anchor rigs. Complete with cables and two breakout pods.
You supply 12v wall wart. Pictures on request. Shipped CONUS $285 from FL.
Tom, K2GO/HP1XT
305-767-1927
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Re: [Elecraft] KPA1500 Failed

2019-02-16 Thread Dave Agsten



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[Elecraft] KX3 and SDR IQ ( Spectravue) question

2019-02-16 Thread Viggo Magnus Nilsen Nilsen

Hello Elecrafters.,

Have some of you connected an SDR IQ to the KX3,, ( use as an Panadapter
with Spectravue) ?

Work very well with the K3

73' Viggo  LA9NEA.,

KX3,K3 and KPA500 owner.
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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Wes

Unfortunately, you're wrong.  My K3S has failed multiple times.  Fortunately, my 
KPA500 has not.  I'm not in the market for a KPA1500.


Wes  N7WS


On 2/16/2019 9:01 AM, Mark Goldberg wrote:

It's been said there are no coincidences. Have you checked your coaxes /
connectors? I agree that protection built in should not allow radios to
blow finals, but this sounds like too much of a coincidence with two
different radios blowing to not be an external intermittent connection. Try
wiggling all the cables with low power. Unfortunately, sometimes a problem
will only show up as arcing at high power. Is there another HAM near you
with a powerful amp and antenna close to yours?

Best of luck,

Mark
W7MLG


On Sat, Feb 16, 2019 at 8:50 AM  wrote:


Exact same thing happened to my K3s in October, now my KPA-1500. Yeah, So
done here. Once repaired and confirmed working it will be up for sale.
Going
back to a tube amp after this.

  - pjd

-Original Message-
From: elecraft-boun...@mailman.qth.net 
On
Behalf Of Paul Baldock
Sent: Saturday, February 16, 2019 10:28 AM
To: rocke...@gmail.com; elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA-1500 failed!

It sounds like one of the output devices have failed. Half power out is
usually the indicator. A number here have reported this happening.
It would be nice to know why this problem is occurring and if Elecraft are
working on a fix.

- Paul

At 07:10 AM 2/16/2019, rocke...@gmail.com wrote:

I talked to Peter on the phone. He has no bias current when amp is
transmitting with no power applied (key on SSB without talking. He is
reading 54 volts and has tried power cycling amp from power supply
switch and reseated all cables. Definitely BAD distortion on SSB (we
are close enough to hear each other). Looks like one RF device let
loose and it is dragging down the bias voltage. That is my guess.

Dave wo2x


-Original Message-
From: elecraft-boun...@mailman.qth.net
 On Behalf Of Wes
Sent: Saturday, February 16, 2019 9:49 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA-1500 failed!

I think a two-tone test is the best evaluation tool..  The generator is
built into the K3 if you have another receiver that you can use to
listen to the amp output.  I use an SDR-IQ which is a very nice tool
for this but any other SDR would do.

Sorry for your pain.

Wes  N7WS

On 2/16/2019 7:28 AM, li...@w2irt.net wrote:

I was operating in the ARRL-CW contest this morning and on 20m, with
a
1.2:1 SWR on the Yagi, all of a sudden I saw my power drop to about
450-500W with about 40W in. Worked a few stations but not as easily
as when I turned everything on this morning. Switched over to phone

and made a few contacts.

Audio is fine barefoot with 100W out of the K3s-which suffered blown
finals itself during CQWW SSB last fall, but with the amp in I got
reports that my audio was badly distorted.

Before I send it in, is there anything I should look at or any
diagnostics I can easily perform? For the cost of this, I'd have
thought protection would have kicked in to prevent anything untoward
from happening. I'm in complete disbelief, to be honest.

-
73 and Good DX
Peter, W2IRT



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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Dave

His radio blew one final while driving the KPA1500 in the fall. 

Now his amp blew one LDMOS. 

I’ve been to Peter’s house and used a TDR to check all of his antennas, 
cabling, and switching. Cable connectors replaced last year. 

I agree it is good idea to check everything again. Looking at the amp fault log 
today did not show signs of anything arcing

Dave wo2x

Sent from my waxed string and tin cans. 

> On Feb 16, 2019, at 11:01 AM, Mark Goldberg  wrote:
> 
> It's been said there are no coincidences. Have you checked your coaxes / 
> connectors? I agree that protection built in should not allow radios to blow 
> finals, but this sounds like too much of a coincidence with two different 
> radios blowing to not be an external intermittent connection. Try wiggling 
> all the cables with low power. Unfortunately, sometimes a problem will only 
> show up as arcing at high power. Is there another HAM near you with a 
> powerful amp and antenna close to yours?
> 
> Best of luck,
> 
> Mark
> W7MLG
> 
> 
>> On Sat, Feb 16, 2019 at 8:50 AM  wrote:
>> Exact same thing happened to my K3s in October, now my KPA-1500. Yeah, So
>> done here. Once repaired and confirmed working it will be up for sale. Going
>> back to a tube amp after this. 
>> 
>>  - pjd
>> 
>> -Original Message-
>> From: elecraft-boun...@mailman.qth.net  On
>> Behalf Of Paul Baldock
>> Sent: Saturday, February 16, 2019 10:28 AM
>> To: rocke...@gmail.com; elecraft@mailman.qth.net
>> Subject: Re: [Elecraft] KPA-1500 failed!
>> 
>> It sounds like one of the output devices have failed. Half power out is
>> usually the indicator. A number here have reported this happening. 
>> It would be nice to know why this problem is occurring and if Elecraft are
>> working on a fix.
>> 
>> - Paul
>> 
>> At 07:10 AM 2/16/2019, rocke...@gmail.com wrote:
>> >I talked to Peter on the phone. He has no bias current when amp is 
>> >transmitting with no power applied (key on SSB without talking. He is 
>> >reading 54 volts and has tried power cycling amp from power supply 
>> >switch and reseated all cables. Definitely BAD distortion on SSB (we 
>> >are close enough to hear each other). Looks like one RF device let 
>> >loose and it is dragging down the bias voltage. That is my guess.
>> >
>> >Dave wo2x
>> >
>> >
>> >-Original Message-
>> >From: elecraft-boun...@mailman.qth.net 
>> > On Behalf Of Wes
>> >Sent: Saturday, February 16, 2019 9:49 AM
>> >To: elecraft@mailman.qth.net
>> >Subject: Re: [Elecraft] KPA-1500 failed!
>> >
>> >I think a two-tone test is the best evaluation tool..  The generator is 
>> >built into the K3 if you have another receiver that you can use to 
>> >listen to the amp output.  I use an SDR-IQ which is a very nice tool 
>> >for this but any other SDR would do.
>> >
>> >Sorry for your pain.
>> >
>> >Wes  N7WS
>> >
>> >On 2/16/2019 7:28 AM, li...@w2irt.net wrote:
>> > > I was operating in the ARRL-CW contest this morning and on 20m, with 
>> > > a
>> > > 1.2:1 SWR on the Yagi, all of a sudden I saw my power drop to about 
>> > > 450-500W with about 40W in. Worked a few stations but not as easily 
>> > > as when I turned everything on this morning. Switched over to phone
>> > and made a few contacts.
>> > > Audio is fine barefoot with 100W out of the K3s-which suffered blown 
>> > > finals itself during CQWW SSB last fall, but with the amp in I got 
>> > > reports that my audio was badly distorted.
>> > >
>> > > Before I send it in, is there anything I should look at or any 
>> > > diagnostics I can easily perform? For the cost of this, I'd have 
>> > > thought protection would have kicked in to prevent anything untoward 
>> > > from happening. I'm in complete disbelief, to be honest.
>> > >
>> > > -
>> > > 73 and Good DX
>> > > Peter, W2IRT
>> > >
>> >
>> >__
>> >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 
>> >rocke...@gmail.com
>> >
>> >__
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>> >Help: http://mailman.qth.net/mmfaq.htm
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>> >
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>> >list: http://www.qsl.net/donate.html Message delivered to 
>> >p...@paulbaldock.com
>> 
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>> Please help support this email list:

Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Mark Goldberg

It's been said there are no coincidences. Have you checked your coaxes /
connectors? I agree that protection built in should not allow radios to
blow finals, but this sounds like too much of a coincidence with two
different radios blowing to not be an external intermittent connection. Try
wiggling all the cables with low power. Unfortunately, sometimes a problem
will only show up as arcing at high power. Is there another HAM near you
with a powerful amp and antenna close to yours?

Best of luck,

Mark
W7MLG


On Sat, Feb 16, 2019 at 8:50 AM  wrote:

> Exact same thing happened to my K3s in October, now my KPA-1500. Yeah, So
> done here. Once repaired and confirmed working it will be up for sale.
> Going
> back to a tube amp after this.
>
>  - pjd
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net 
> On
> Behalf Of Paul Baldock
> Sent: Saturday, February 16, 2019 10:28 AM
> To: rocke...@gmail.com; elecraft@mailman.qth.net
> Subject: Re: [Elecraft] KPA-1500 failed!
>
> It sounds like one of the output devices have failed. Half power out is
> usually the indicator. A number here have reported this happening.
> It would be nice to know why this problem is occurring and if Elecraft are
> working on a fix.
>
> - Paul
>
> At 07:10 AM 2/16/2019, rocke...@gmail.com wrote:
> >I talked to Peter on the phone. He has no bias current when amp is
> >transmitting with no power applied (key on SSB without talking. He is
> >reading 54 volts and has tried power cycling amp from power supply
> >switch and reseated all cables. Definitely BAD distortion on SSB (we
> >are close enough to hear each other). Looks like one RF device let
> >loose and it is dragging down the bias voltage. That is my guess.
> >
> >Dave wo2x
> >
> >
> >-Original Message-
> >From: elecraft-boun...@mailman.qth.net
> > On Behalf Of Wes
> >Sent: Saturday, February 16, 2019 9:49 AM
> >To: elecraft@mailman.qth.net
> >Subject: Re: [Elecraft] KPA-1500 failed!
> >
> >I think a two-tone test is the best evaluation tool..  The generator is
> >built into the K3 if you have another receiver that you can use to
> >listen to the amp output.  I use an SDR-IQ which is a very nice tool
> >for this but any other SDR would do.
> >
> >Sorry for your pain.
> >
> >Wes  N7WS
> >
> >On 2/16/2019 7:28 AM, li...@w2irt.net wrote:
> > > I was operating in the ARRL-CW contest this morning and on 20m, with
> > > a
> > > 1.2:1 SWR on the Yagi, all of a sudden I saw my power drop to about
> > > 450-500W with about 40W in. Worked a few stations but not as easily
> > > as when I turned everything on this morning. Switched over to phone
> > and made a few contacts.
> > > Audio is fine barefoot with 100W out of the K3s-which suffered blown
> > > finals itself during CQWW SSB last fall, but with the amp in I got
> > > reports that my audio was badly distorted.
> > >
> > > Before I send it in, is there anything I should look at or any
> > > diagnostics I can easily perform? For the cost of this, I'd have
> > > thought protection would have kicked in to prevent anything untoward
> > > from happening. I'm in complete disbelief, to be honest.
> > >
> > > -
> > > 73 and Good DX
> > > Peter, W2IRT
> > >
> >
> >__
> >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
> >rocke...@gmail.com
> >
> >__
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> >list: http://www.qsl.net/donate.html Message delivered to
> >p...@paulbaldock.com
>
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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread lists

Exact same thing happened to my K3s in October, now my KPA-1500. Yeah, So
done here. Once repaired and confirmed working it will be up for sale. Going
back to a tube amp after this. 

 - pjd

-Original Message-
From: elecraft-boun...@mailman.qth.net  On
Behalf Of Paul Baldock
Sent: Saturday, February 16, 2019 10:28 AM
To: rocke...@gmail.com; elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA-1500 failed!

It sounds like one of the output devices have failed. Half power out is
usually the indicator. A number here have reported this happening. 
It would be nice to know why this problem is occurring and if Elecraft are
working on a fix.

- Paul

At 07:10 AM 2/16/2019, rocke...@gmail.com wrote:
>I talked to Peter on the phone. He has no bias current when amp is 
>transmitting with no power applied (key on SSB without talking. He is 
>reading 54 volts and has tried power cycling amp from power supply 
>switch and reseated all cables. Definitely BAD distortion on SSB (we 
>are close enough to hear each other). Looks like one RF device let 
>loose and it is dragging down the bias voltage. That is my guess.
>
>Dave wo2x
>
>
>-Original Message-
>From: elecraft-boun...@mailman.qth.net 
> On Behalf Of Wes
>Sent: Saturday, February 16, 2019 9:49 AM
>To: elecraft@mailman.qth.net
>Subject: Re: [Elecraft] KPA-1500 failed!
>
>I think a two-tone test is the best evaluation tool..  The generator is 
>built into the K3 if you have another receiver that you can use to 
>listen to the amp output.  I use an SDR-IQ which is a very nice tool 
>for this but any other SDR would do.
>
>Sorry for your pain.
>
>Wes  N7WS
>
>On 2/16/2019 7:28 AM, li...@w2irt.net wrote:
> > I was operating in the ARRL-CW contest this morning and on 20m, with 
> > a
> > 1.2:1 SWR on the Yagi, all of a sudden I saw my power drop to about 
> > 450-500W with about 40W in. Worked a few stations but not as easily 
> > as when I turned everything on this morning. Switched over to phone
> and made a few contacts.
> > Audio is fine barefoot with 100W out of the K3s-which suffered blown 
> > finals itself during CQWW SSB last fall, but with the amp in I got 
> > reports that my audio was badly distorted.
> >
> > Before I send it in, is there anything I should look at or any 
> > diagnostics I can easily perform? For the cost of this, I'd have 
> > thought protection would have kicked in to prevent anything untoward 
> > from happening. I'm in complete disbelief, to be honest.
> >
> > -
> > 73 and Good DX
> > Peter, W2IRT
> >
>
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>This list hosted by: http://www.qsl.net Please help support this email 
>list: http://www.qsl.net/donate.html Message delivered to 
>rocke...@gmail.com
>
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>p...@paulbaldock.com

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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Paul Baldock

It sounds like one of the output devices have failed. Half power out 
is usually the indicator. A number here have reported this happening. 
It would be nice to know why this problem is occurring and if 
Elecraft are working on a fix.

- Paul

At 07:10 AM 2/16/2019, rocke...@gmail.com wrote:
I talked to Peter on the phone. He has no bias current when amp is 
transmitting with no power applied (key on SSB without talking. He 
is reading 54 volts and has tried power cycling amp from power 
supply switch and reseated all cables. Definitely BAD distortion on 
SSB (we are close enough to hear each other). Looks like one RF 
device let loose and it is dragging down the bias voltage. That is my guess.

Dave wo2x

-Original Message-
From: elecraft-boun...@mailman.qth.net 
 On Behalf Of Wes

Sent: Saturday, February 16, 2019 9:49 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA-1500 failed!

I think a two-tone test is the best evaluation tool..  The generator 
is built into the K3 if you have another receiver that you can use 
to listen to the amp output.  I use an SDR-IQ which is a very nice 
tool for this but any other SDR would do.

Sorry for your pain.

Wes  N7WS

On 2/16/2019 7:28 AM, li...@w2irt.net wrote:
> I was operating in the ARRL-CW contest this morning and on 20m, with a
> 1.2:1 SWR on the Yagi, all of a sudden I saw my power drop to about
> 450-500W with about 40W in. Worked a few stations but not as easily as
> when I turned everything on this morning. Switched over to phone 
and made a few contacts.

> Audio is fine barefoot with 100W out of the K3s-which suffered blown
> finals itself during CQWW SSB last fall, but with the amp in I got
> reports that my audio was badly distorted.
>
> Before I send it in, is there anything I should look at or any
> diagnostics I can easily perform? For the cost of this, I'd have
> thought protection would have kicked in to prevent anything untoward
> from happening. I'm in complete disbelief, to be honest.
>
> -
> 73 and Good DX
> Peter, W2IRT
>

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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread rocketnj

I talked to Peter on the phone. He has no bias current when amp is transmitting 
with no power applied (key on SSB without talking. He is reading 54 volts and 
has tried power cycling amp from power supply switch and reseated all cables. 
Definitely BAD distortion on SSB (we are close enough to hear each other). 
Looks like one RF device let loose and it is dragging down the bias voltage. 
That is my guess.

Dave wo2x


-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Wes
Sent: Saturday, February 16, 2019 9:49 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA-1500 failed!

I think a two-tone test is the best evaluation tool..  The generator is built 
into the K3 if you have another receiver that you can use to listen to the amp 
output.  I use an SDR-IQ which is a very nice tool for this but any other SDR 
would do.

Sorry for your pain.

Wes  N7WS

On 2/16/2019 7:28 AM, li...@w2irt.net wrote:
> I was operating in the ARRL-CW contest this morning and on 20m, with a 
> 1.2:1 SWR on the Yagi, all of a sudden I saw my power drop to about 
> 450-500W with about 40W in. Worked a few stations but not as easily as 
> when I turned everything on this morning. Switched over to phone and made a 
> few contacts.
> Audio is fine barefoot with 100W out of the K3s-which suffered blown 
> finals itself during CQWW SSB last fall, but with the amp in I got 
> reports that my audio was badly distorted.
>
> Before I send it in, is there anything I should look at or any 
> diagnostics I can easily perform? For the cost of this, I'd have 
> thought protection would have kicked in to prevent anything untoward 
> from happening. I'm in complete disbelief, to be honest.
>
> -
> 73 and Good DX
> Peter, W2IRT
>

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Re: [Elecraft] KPA-1500 failed!

2019-02-16 Thread Wes

I think a two-tone test is the best evaluation tool..  The generator is built 
into the K3 if you have another receiver that you can use to listen to the amp 
output.  I use an SDR-IQ which is a very nice tool for this but any other SDR 
would do.


Sorry for your pain.

Wes  N7WS

On 2/16/2019 7:28 AM, li...@w2irt.net wrote:

I was operating in the ARRL-CW contest this morning and on 20m, with a 1.2:1
SWR on the Yagi, all of a sudden I saw my power drop to about 450-500W with
about 40W in. Worked a few stations but not as easily as when I turned
everything on this morning. Switched over to phone and made a few contacts.
Audio is fine barefoot with 100W out of the K3s-which suffered blown finals
itself during CQWW SSB last fall, but with the amp in I got reports that my
audio was badly distorted.

Before I send it in, is there anything I should look at or any diagnostics I
can easily perform? For the cost of this, I'd have thought protection would
have kicked in to prevent anything untoward from happening. I'm in complete
disbelief, to be honest.

-
73 and Good DX
Peter, W2IRT



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[Elecraft] Keyboards

2019-02-16 Thread Bob Gibson via Elecraft

Thanks Fellows very much for the input..I will research these and find one that 
works the best for me..THANKS AGAIN... 
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[Elecraft] KPA-1500 failed!

2019-02-16 Thread lists

I was operating in the ARRL-CW contest this morning and on 20m, with a 1.2:1
SWR on the Yagi, all of a sudden I saw my power drop to about 450-500W with
about 40W in. Worked a few stations but not as easily as when I turned
everything on this morning. Switched over to phone and made a few contacts.
Audio is fine barefoot with 100W out of the K3s-which suffered blown finals
itself during CQWW SSB last fall, but with the amp in I got reports that my
audio was badly distorted. 

Before I send it in, is there anything I should look at or any diagnostics I
can easily perform? For the cost of this, I'd have thought protection would
have kicked in to prevent anything untoward from happening. I'm in complete
disbelief, to be honest.

-
73 and Good DX
Peter, W2IRT

 

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Re: [Elecraft] KEYBOARD

2019-02-16 Thread bill

The 48 key Genovation is WONDERFUL!!!  It allows me to do most 
everything with the touch of a button or two - from memories, to 
filters, to tuning, and more. The only limit is your imagination for 
building macros. I never have to reach across the desk to hands-on the 
K3 except to turn it on and off. Need more desk edge control? Get a 
KPod. BTW I use an old wired keyboard for the P3.




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[Elecraft] KAT500 powers on OK

2019-02-16 Thread Jim Douglas via Elecraft

Thanks for the replies on my posting about my KAT500 not powering up.It turned 
out to be a bad coaxial power connector! My KAT500 is back working like 
before.Thanks for the ideas to get my tuner working and it turned out to be a 
coaxial power connector, stupid me!Jim Douglas  K2ZF 
 
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Re: [Elecraft] KEYBOARD

2019-02-16 Thread Dave Cole (NK7Z)


Hi Bob,

On a related subject, but not quite what you asked about, if you are 
just looking for a way to fire off macros at the K3, and have the SVGA 
for the P3, see:


https://www.nk7z.net/adding-external-keypad-k3/

This is a way to use a 64 key Genovation keypad to fire off complex 
macros to the K3/P3, using a single keypress, from a dedicated pad, as 
opposed to having to type in macros, or triggers to the K3/P3 radio 
complex via a keyboard.


An example of what can be done would be the "Offset +" macro-- I press a 
single button on the Genovation keypad, and the Radio drops into split, 
the P3 shifts the CW signal to the left side of the display, while 
setting the bandwidth for the P3 to 6 KHz., to show the top part of the 
pile up, and then sets the K3 bandwidth to whatever I have set in the 
macro, all with a single button press.


I currently have 32 macros programmed up, some for power level setting, 
switching VFOs, triggering the K3 memories in CW or Voice, setting K3 
bandwidths, contest exchanges, IDs, etc.


There is a spread sheet of macros you can download for use within the 
Genovation setup at that URL as well.  I seldom even touch the K3 now, 
but to tune, or turn it on, or off.  Most of my K3/P3 operations comes 
from the Genovation keypad.


73s and thanks,
Dave (NK7Z)
https://www.nk7z.net
Award Manager, 30MDG Grid Awards
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon

On 2/15/19 6:53 PM, Bob Gibson via Elecraft wrote:

I'm looking for the recommend keyboard to plug into the back of the P3 that 
works! I looking for a mini keyboard..The one I have does not work..


Thanks Bob
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