Re: [Elecraft] KPA1500 Remote Program

[Rick Tavan]

No idea when KPA1500 Remote will appear, Tony, but you don't need it to
operate the amp remotely. KPA1500 Utility has a very nice Operate page that
I have found quite adequate to operate my amp in the mountains from a
control site in the valley. I use Chrome Remote Desktop to view and
manipulate it. Windows Remote Desktop or Teamviewer do the same thing or
you can have a "long" serial port (cable or network device). When it
arrives, KPA1500 Remote will add client/server operation, pretty bar
graphs, and maybe more, but I'm surviving for now without it.

73,

/Rick N6XI


Rick Tavan
Truckee, CA

On Fri, May 25, 2018 at 3:26 AM, N2TK, Tony  wrote:

> Any word on the KPA1500 Remote Program? Once the program is available I can
> move the KPA1500 alongside my KPA500 on a shelf in the basement.
>
> 73,
>
> N2TK, Tony
>
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Re: [Elecraft] K3 SSB +CW Power Overshoot

[Dan Maase via Elecraft]

An afternoon of operating SSB a bit and the CW overshoot behavior has
returned. No joy. Hope this gets on the Elecraft bug list.

73,
Dan
AC6DM

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Re: [Elecraft] Windows 10 Update Breaks COM Port for K3 & P3 Utilities

[Clay Autery]

Oh no... not me.  All my USB stuff is working perfectly even with 
the 50 lbs of gear I have hanging off the various USB buses...    
But you have a point. Some of these other folks may have some issues.  
It's my business to keep system's clean, so I am massively OCD about 
doing so for my own machines.


Just bothers me that so many other folks are having issues  I spent 
some hours today researching and putting together some tools.  I will be 
testing them and hopefully writing up a procedure for "last resort" use.
Rebuilding the USB Bus structure from the ground up is not a trivial 
task to say the least


__
Clay Autery, KY5G
(318) 518-1389

On 05/29/18 19:00, Bill Johnson wrote:
Take a step back.  There are lots of influences which affect 
situations.  Desktop viruses are usually the first.  These control the 
internet connections.  They don't play well with your PC.  I know this 
as I fix issues for my customers. Good luck!  You may be seriously 
infected.


Have a great day,
Bill J


*From:* elecraft-boun...@mailman.qth.net 
 on behalf of Clay Autery 


*Sent:* Tuesday, May 29, 2018 6:42:03 PM
*To:* elecraft@mailman.qth.net
*Subject:* Re: [Elecraft] Windows 10 Update Breaks COM Port for K3 & 
P3 Utilities
This is such a cluster and should never have happened...  when I can 
break loose, I will see what I can do to repriduce this situation  
(I had zero issues with 1803 release or the insider prieview preceding 
it).
I will also investigate for tools available for cleaning out the 
registry of ALL USB enumeration et al. so AT LEAST there will be a 
procedure where we can start clean and reinstall/configure all USB 
connections/devices/routings.
I use multiple USB hubs, outboard USB audio interfaces/mixers, VNWA, 
SDR, LP-PAN, GPSDO. NTP server, etc
So when I went to USBVIEW and looked around, I was astonidhed at the 
plate of USB spaghetti it had become.
It is a wonder that any signal gets to where it is supposed to go  


73,Clay, KY5G


Sent from my Verizon, Samsung Galaxy smartphone
 Original message From: Bill Johnson  
Date: 5/29/18  13:47  (GMT-06:00) To: Tom , Mark 
Wheeler , elecraft@mailman.qth.net Cc: Mark 
Wheeler  Subject: Re: [Elecraft] Windows 10 
Update Breaks COM Port for K3 &

 P3  Utilities
Tom,  I get prereleases for WIN 10 Pro which means I got the release 
you are probably discussing in this thread some time ago.  The audio 
codec changes in the release can be a big PITA.  I have to unplug my 
USB cable to the K3S in order not to have the PC speakers and the 
directly plugged in Stereo speakers on at the same time.  If I want to 
use the USB cable, then I have to use the PC speakers.  Interestingly, 
I can disable one set of speakers via control panel settings, but once 
I reboot the speaker is then re-detected.  I will eventually have too 
use the PC speakers, and abandon my excellent stereo speakers hooked 
directly to the K3S.  I prefer using the volume control on the K3S vs 
reaching to adjust the PC speakers or changing the mixer settings on 
the desktop.


73,
Bill
K9YEQ

https://wrj-tech.com/

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



Hi,
[WJ] 

Now with the latest Windows 10 update, some changes have been made to 
the Privacy settings on your computer, specifically devices that act 
as Microphones, one of which is probably the USB codec that Elecraft 
uses.

Make sure it is set to allow.
73 Tom
va2fsq.com




-Original Message-
From: Mark Wheeler
Sent: Sunday, May 27, 2018 10:29 AM
To: elecraft@mailman.qth.net
Cc: Mark Wheeler
Subject: [Elecraft] Windows 10 Update Breaks COM Port for K3 & P3 
Utilities


With the latest Windows 10 update earlier this week, my K3S and P3 can 
no longer communicate with my Windows 10 PC via the USB cables.  I’ve 
gone into Device Manager and right clicked on the COM12 device drive 
and clicked “update driver” and that updated from a 2016 driver to a 
2017 CM port driver, but neither connect the PC to my K3S or P3. Any 
suggestions?  Thank you.


Mark
WU6R
(formally KM6HFR)
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[Elecraft] K3S USB Drivers

[Rich]

I have been seeing this discussion about downloading the Elecraft USB 
drivers and so on.   The latest Win10 update deleted my K3s 
USB/Soundcard setup also.   However I only needed to plug the USB back 
into the K3s and all is good.  I did need to rename the K3s in Win Sound 
(so I know which codec is for the K3s)  I have never used the Elecraft 
drivers and everything works just fine.


Am I missing something?

Rich

K3RWN

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Re: [Elecraft] KPA1500 fan noise concern

[Jorge Diez (CX6VM-CW5W)]

That’s will be great! 

Enviado desde mi iPhone

El 29 may. 2018, a la(s) 22:47,   escribió:

> I was suggesting an optional hardware controller separate from the amp, not
> operating it remotely though a computer. OM Power, Acom and Henry have done
> this with some of their models.
> 
> John KK9A
> 
> Bill Stravinsky k3wjv wrote 
> Tue May 29 14:40:43 EDT 2018
> 
> 
> John
> I would imagine the 1500 will be remotable just as the 500 is.  A friend of
> mine remotes his 500 to the basement just as he did with his Acom 2000aand
> he is investigating remoting the 1500 he just got.  As for a control box I
> don't know.  Not sure if the amp faults will be visible in the vfo B area
> ofthe K3.  It tells you its on-off or in standby.
> BillK3WJV
> 
> 
> 
>On Monday, May 28, 2018, 9:18:04 PM EDT, john at kk9a.com  kk9a.com> wrote:  
> 
> I imagine that due to the KPA1500's size it requires a higher volume of air
> than a large amplifier would. Its small size and weight make it appealing.
> The Acom 2000 has a control box that is separate from the amp so you really
> never hear the amp run. I am wondering it something similar can be done with
> the Elecraft KPA1500, perhaps an option like the K-Pod, so that the noise
> source is further from the operating position?
> 
> John KK9A
> 
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[Elecraft] KPA1500 fan noise concern

[john]

I was suggesting an optional hardware controller separate from the amp, not
operating it remotely though a computer. OM Power, Acom and Henry have done
this with some of their models.

John KK9A

Bill Stravinsky k3wjv wrote 
Tue May 29 14:40:43 EDT 2018


John
I would imagine the 1500 will be remotable just as the 500 is.  A friend of
mine remotes his 500 to the basement just as he did with his Acom 2000aand
he is investigating remoting the 1500 he just got.  As for a control box I
don't know.  Not sure if the amp faults will be visible in the vfo B area
ofthe K3.  It tells you its on-off or in standby.
BillK3WJV



On Monday, May 28, 2018, 9:18:04 PM EDT, john at kk9a.com  wrote:  
 
 I imagine that due to the KPA1500's size it requires a higher volume of air
than a large amplifier would. Its small size and weight make it appealing.
The Acom 2000 has a control box that is separate from the amp so you really
never hear the amp run. I am wondering it something similar can be done with
the Elecraft KPA1500, perhaps an option like the K-Pod, so that the noise
source is further from the operating position?

John KK9A

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Re: [Elecraft] Windows 10 Update Breaks COM Port for K3 & P3 Utilities

[Bill Johnson]

Take a step back.  There are lots of influences which affect situations.  
Desktop viruses are usually the first.  These control the internet connections. 
 They don't play well with your PC.  I know this as I fix issues for my 
customers. Good luck!  You may be seriously infected.

Have a great day,
Bill J


From: elecraft-boun...@mailman.qth.net  on 
behalf of Clay Autery 
Sent: Tuesday, May 29, 2018 6:42:03 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Windows 10 Update Breaks COM Port for K3 & P3 Utilities

This is such a cluster and should never have happened...  when I can break 
loose, I will see what I can do to repriduce this situation  (I had zero 
issues with 1803 release or the insider prieview preceding it).
I will also investigate for tools available for cleaning out the registry of 
ALL USB enumeration et al. so AT LEAST there will be a procedure where we can 
start clean and reinstall/configure all USB connections/devices/routings.
I use multiple USB hubs, outboard USB audio interfaces/mixers, VNWA, SDR, 
LP-PAN, GPSDO. NTP server, etc
So when I went to USBVIEW and looked around, I was astonidhed at the plate of 
USB spaghetti it had become.
It is a wonder that any signal gets to where it is supposed to go  
73,Clay, KY5G


Sent from my Verizon, Samsung Galaxy smartphone
 Original message From: Bill Johnson  Date: 
5/29/18  13:47  (GMT-06:00) To: Tom , Mark Wheeler 
, elecraft@mailman.qth.net Cc: Mark Wheeler 
 Subject: Re: [Elecraft] Windows 10 Update Breaks COM Port 
for K3 &
 P3  Utilities
Tom,  I get prereleases for WIN 10 Pro which means I got the release you are 
probably discussing in this thread some time ago.  The audio codec changes in 
the release can be a big PITA.  I have to unplug my USB cable to the K3S in 
order not to have the PC speakers and the directly plugged in Stereo speakers 
on at the same time.  If I want to use the USB cable, then I have to use the PC 
speakers.  Interestingly, I can disable one set of speakers via control panel 
settings, but once I reboot the speaker is then re-detected.  I will eventually 
have too use the PC speakers, and abandon my excellent stereo speakers hooked 
directly to the K3S.  I prefer using the volume control on the K3S vs reaching 
to adjust the PC speakers or changing the mixer settings on the desktop.

73,
Bill
K9YEQ

https://wrj-tech.com/

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


Hi,
[WJ] 

Now with the latest Windows 10 update, some changes have been made to the 
Privacy settings on your computer, specifically devices that act as 
Microphones, one of which is probably the USB codec that Elecraft uses.
Make sure it is set to allow.
73 Tom
va2fsq.com




-Original Message-
From: Mark Wheeler
Sent: Sunday, May 27, 2018 10:29 AM
To: elecraft@mailman.qth.net
Cc: Mark Wheeler
Subject: [Elecraft] Windows 10 Update Breaks COM Port for K3 & P3 Utilities

With the latest Windows 10 update earlier this week, my K3S and P3 can no 
longer communicate with my Windows 10 PC via the USB cables.  I’ve gone into 
Device Manager and right clicked on the COM12 device drive and clicked “update 
driver” and that updated from a 2016 driver to a 2017 CM port driver, but 
neither connect the PC to my K3S or P3.  Any suggestions?  Thank you.

Mark
WU6R
(formally KM6HFR)
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Re: [Elecraft] Windows 10 Update Breaks COM Port for K3 & P3 Utilities

[Clay Autery]

This is such a cluster and should never have happened...  when I can break 
loose, I will see what I can do to repriduce this situation  (I had zero 
issues with 1803 release or the insider prieview preceding it).
I will also investigate for tools available for cleaning out the registry of 
ALL USB enumeration et al. so AT LEAST there will be a procedure where we can 
start clean and reinstall/configure all USB connections/devices/routings.
I use multiple USB hubs, outboard USB audio interfaces/mixers, VNWA, SDR, 
LP-PAN, GPSDO. NTP server, etc
So when I went to USBVIEW and looked around, I was astonidhed at the plate of 
USB spaghetti it had become.  
It is a wonder that any signal gets to where it is supposed to go  
73,Clay, KY5G


Sent from my Verizon, Samsung Galaxy smartphone
 Original message From: Bill Johnson  Date: 
5/29/18  13:47  (GMT-06:00) To: Tom , Mark Wheeler 
, elecraft@mailman.qth.net Cc: Mark Wheeler 
 Subject: Re: [Elecraft] Windows 10 Update Breaks COM Port 
for K3 &
P3  Utilities 
Tom,  I get prereleases for WIN 10 Pro which means I got the release you are 
probably discussing in this thread some time ago.  The audio codec changes in 
the release can be a big PITA.  I have to unplug my USB cable to the K3S in 
order not to have the PC speakers and the directly plugged in Stereo speakers 
on at the same time.  If I want to use the USB cable, then I have to use the PC 
speakers.  Interestingly, I can disable one set of speakers via control panel 
settings, but once I reboot the speaker is then re-detected.  I will eventually 
have too use the PC speakers, and abandon my excellent stereo speakers hooked 
directly to the K3S.  I prefer using the volume control on the K3S vs reaching 
to adjust the PC speakers or changing the mixer settings on the desktop.

73,
Bill
K9YEQ

https://wrj-tech.com/

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


Hi,
[WJ] 

Now with the latest Windows 10 update, some changes have been made to the 
Privacy settings on your computer, specifically devices that act as 
Microphones, one of which is probably the USB codec that Elecraft uses. 
Make sure it is set to allow.
73 Tom
va2fsq.com




-Original Message-
From: Mark Wheeler
Sent: Sunday, May 27, 2018 10:29 AM
To: elecraft@mailman.qth.net
Cc: Mark Wheeler
Subject: [Elecraft] Windows 10 Update Breaks COM Port for K3 & P3 Utilities

With the latest Windows 10 update earlier this week, my K3S and P3 can no 
longer communicate with my Windows 10 PC via the USB cables.  I’ve gone into 
Device Manager and right clicked on the COM12 device drive and clicked “update 
driver” and that updated from a 2016 driver to a 2017 CM port driver, but 
neither connect the PC to my K3S or P3.  Any suggestions?  Thank you.

Mark
WU6R
(formally KM6HFR)
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Re: [Elecraft] KPA1500 remote program

[Eric Swartz - WA6HHQ, Elecraft]

Hi Tony,

We are working on it now and should have a beta version for customer testing in 
the next couple of weeks.

73,

Eric
elecraft.com
_..._



> On May 29, 2018, at 2:21 PM, N2TK, Tony  wrote:
> 
> Any word on the Remote Program for the KPA1500? The KPA500 Remote Program
> works fine and allowed me to move the amp to the basement. I want to do
> likewise with the KPA1500.
> 
> 73,
> 
> N2TK, Tony
> 
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[Elecraft] For those keeping track

[Paul Van Dyke]

KPA1500  #193 was on my doorstep on Friday.
Order date 9/1/17

Will be on the air in a month ... month long business trip

Paul --- KB9AVO
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[Elecraft] KPA1500 remote program

[N2TK, Tony]

Any word on the Remote Program for the KPA1500? The KPA500 Remote Program
works fine and allowed me to move the amp to the basement. I want to do
likewise with the KPA1500.

73,

N2TK, Tony

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Re: [Elecraft] OT antenna question

[Fred Jensen]

Well ... define "correctly."  All simulation is an approximation of 
reality.  NEC-4 adds capabilities such as buried radial fields, and is 
more faithful for tiny antennas than NEC-2.  It treats lumped circuit 
constants pretty much the same as NEC-2, however.


Last time I checked, a US non-commercial NEC-4 license was $300, IIRC.  
You'd need the NEC-4 EZNEC UI too.  Since the vast majority of 
environment variables impacting antenna performance in the real world 
are not part of any of the models, and we are "amateurs," I doubt you 
would see any benefit from NEC-4.


73,

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

On 5/28/2018 5:03 PM, Clay Autery wrote:

My mistake... doh!  I meant 4.

Increment version by 2... same question... Does NEC-4 handle the phase 
shift through inductors correctly?


It's a big chunk of change to get the NEC-4 license and upgrade the 
front end license...  need to compile multiple reasons to justify it.  



Appreciate the catch...

__
Clay Autery, KY5G
(318) 518-1389



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Re: [Elecraft] K3 SSB +CW Power Overshoot

[Dan Maase via Elecraft]

Bill:
Thanks for your input. I did EEINIT yesterday and reloaded all SW. No
change.

Today, I did EEINIT again and fooled around with the radio in its native
state, changing modes, etc.
Then reloaded saved configuration and for no particular reason, did a BSET. 
Then did a SSB +CW selection. Lo and behold, the CW behavior is what I would
expect and same as in basic CW mode.
No overshoot and power change is smooth with no jumps. On CW key press,
power starts out slightly low and builds to the set value.

I suspect there is a bug in the code somewhere. Experience says there is 
probably an
uninitialized variable lurking in the ALC code. **Elecraft SW developers note.**
It will be interesting to see if this good behavior sticks.

BTW, Albuquerque is my old, old stomping ground. BSEE from UNM in 1967.

73,
Dan AC6DM


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Re: [Elecraft] Windows 10 Update Breaks COM Port for K3 & P3 Utilities

[Bill Johnson]

Tom,  I get prereleases for WIN 10 Pro which means I got the release you are 
probably discussing in this thread some time ago.  The audio codec changes in 
the release can be a big PITA.  I have to unplug my USB cable to the K3S in 
order not to have the PC speakers and the directly plugged in Stereo speakers 
on at the same time.  If I want to use the USB cable, then I have to use the PC 
speakers.  Interestingly, I can disable one set of speakers via control panel 
settings, but once I reboot the speaker is then re-detected.  I will eventually 
have too use the PC speakers, and abandon my excellent stereo speakers hooked 
directly to the K3S.  I prefer using the volume control on the K3S vs reaching 
to adjust the PC speakers or changing the mixer settings on the desktop.

73,
Bill
K9YEQ

https://wrj-tech.com/

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


Hi,
[WJ] 

Now with the latest Windows 10 update, some changes have been made to the 
Privacy settings on your computer, specifically devices that act as 
Microphones, one of which is probably the USB codec that Elecraft uses. 
Make sure it is set to allow.
73 Tom
va2fsq.com




-Original Message-
From: Mark Wheeler
Sent: Sunday, May 27, 2018 10:29 AM
To: elecraft@mailman.qth.net
Cc: Mark Wheeler
Subject: [Elecraft] Windows 10 Update Breaks COM Port for K3 & P3 Utilities

With the latest Windows 10 update earlier this week, my K3S and P3 can no 
longer communicate with my Windows 10 PC via the USB cables.  I’ve gone into 
Device Manager and right clicked on the COM12 device drive and clicked “update 
driver” and that updated from a 2016 driver to a 2017 CM port driver, but 
neither connect the PC to my K3S or P3.  Any suggestions?  Thank you.

Mark
WU6R
(formally KM6HFR)
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Re: [Elecraft] KPA1500 fan noise concern

[Bill Stravinsky via Elecraft]

 John
I would imagine the 1500 will be remotable just as the 500 is.  A friend of 
mine remotes his 500 to the basement just as he did with his Acom 2000aand he 
is investigating remoting the 1500 he just got.  As for a control box I don't 
know.  Not sure if the amp faults will be visible in the vfo B area ofthe K3.  
It tells you its on-off or in standby.
BillK3WJV



On Monday, May 28, 2018, 9:18:04 PM EDT, j...@kk9a.com  
wrote:  
 
 I imagine that due to the KPA1500's size it requires a higher volume of air
than a large amplifier would. Its small size and weight make it appealing.
The Acom 2000 has a control box that is separate from the amp so you really
never hear the amp run. I am wondering it something similar can be done with
the Elecraft KPA1500, perhaps an option like the K-Pod, so that the noise
source is further from the operating position?

John KK9A



Thanks for the offer, Clay. But we actually did extensive thermal analysis
of both the heat sink and fans, tested many different fan types and
configurations, and did comparative noise testing of the KPA1500 vs. a
number of other amps. 

As you allude to, there's no magic bullet. Heat must be removed, with
various physical and electrical constraints to be satisfied. 

We have some pretty amazing thermal imaging devices that we use to examine
heat signatures of electrical components. These were used during R&D, which
is how we determined that two LDMOS devices were far better than one for
heat distribution. We also used it to evaluate the design of our very
large/very thick copper heat spreader. On the production line, we review all
modules for hot spots during burn-in and make sure the cooling is working
perfectly (onset temperature, air distribution around modules, etc.).

Of course supplemental cooling of various types has been used with
amplifiers in the past. I believe we have a couple of customers and staff
experimenting with this idea, and anything that emerges will be posted here.

73,
Wayne
N6KR

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Re: [Elecraft] K3 - Amplifier Recognition

[Grant Youngman]

Wayne .. turns out you’re a humorist, too.  Perfect solution.  Unfortunately, 
it may generate a too long thread with much ranting .. :-)

Grant NQ5T
K3 #2091, KX3 #8342

> On May 29, 2018, at 12:40 PM, Wayne Burdick  wrote:
> 
> When we next release K3 firmware, the message flashed on VFO B will be 
> “KPA*500”, intended to convey that either a KPA500 or KPA1500 is connected. 
> At present the K3 doesn’t distinguish between the two, since they’re 
> identical as far as operating state and error messages are concerned.
> 
> 73,
> Wayne
> N6KR
> 
> 
>> On May 28, 2018, at 7:30 AM, Bill Stravinsky via Elecraft 
>>  wrote:
>> 
>> I'm thinking there will be a firmware update to fix this.  I don't have a Y 
>> box but the only menu choice in the K3 is kpa500 and that is what I see from 
>> the 1500on the K3 display although it might already be fixed as I haven't 
>> upgraded firmware in a while.
>> BillK3WJV
>> 
>>   On Sunday, May 27, 2018, 8:08:40 AM EDT, Bill via Elecraft 
>>  wrote:  
>> 
>> Using N6TV ‘s “Y-Box,” I can switch between the KPA500 or my new KPA1500 
>> effortlessly as needed. However, regardless of which amp is active, the K3 
>> message that informs you that the amp has been switched to/from stand-by to 
>> active always reads KPA500. 
>> For someone running amps in the same configuration remotely, this maybe an 
>> issue. 
>> Has anyone else noticed this? 
>> If so, have you determined a remedy?
>> 
>> Thanks, 
>> Bill-W0BBI
> 
> 
> 
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Re: [Elecraft] K3 - Amplifier Recognition

[Wayne Burdick]

When we next release K3 firmware, the message flashed on VFO B will be 
“KPA*500”, intended to convey that either a KPA500 or KPA1500 is connected. At 
present the K3 doesn’t distinguish between the two, since they’re identical as 
far as operating state and error messages are concerned.

73,
Wayne
N6KR


> On May 28, 2018, at 7:30 AM, Bill Stravinsky via Elecraft 
>  wrote:
> 
> I'm thinking there will be a firmware update to fix this.  I don't have a Y 
> box but the only menu choice in the K3 is kpa500 and that is what I see from 
> the 1500on the K3 display although it might already be fixed as I haven't 
> upgraded firmware in a while.
> BillK3WJV
> 
>On Sunday, May 27, 2018, 8:08:40 AM EDT, Bill via Elecraft 
>  wrote:  
> 
> Using N6TV ‘s “Y-Box,” I can switch between the KPA500 or my new KPA1500 
> effortlessly as needed. However, regardless of which amp is active, the K3 
> message that informs you that the amp has been switched to/from stand-by to 
> active always reads KPA500. 
> For someone running amps in the same configuration remotely, this maybe an 
> issue. 
> Has anyone else noticed this? 
> If so, have you determined a remedy?
> 
> Thanks, 
> Bill-W0BBI



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Re: [Elecraft] Using SDR Play with KX3 Ocsilator Noise?

[Bob McGraw K4TAX]

As I have found, it may be necessary to set the LO to an offset value 
from the TUNE frequency of the SDR Play receiver.   I use HDSDR for my 
software with the SDR Play.  The feature is in  the F7 Options menu, 
look for Misc menu options of HDSDR.   Also, it may be necessary to set 
the DC Removal to a value in F7 Calibration menu. A bandwidth of 5 to 25 
Hz seems to work OK.


73

Bob, K4TAX


On 5/29/2018 9:55 AM, Fred Nassar wrote:

  I am using the KX3 with SDR play as a pan adapter. I have noticed that
there is some type of signal (quite strong) showing up on the pan adapter
on the frequency that the KX3 is tuned. This signal moves as I move the
VFO, so it seems to be some local oscillator issue. The result is the sdr
play seems to be desensitized and signal levels on the KX3 are lower. When
I engage the RX pre-amp, this signal goes away and all is right with the
world. On most bands 10 db is enough to do the trick. On 17 meters it takes
30 db to get rid of it and remove the desensitization from the RX. Wonder
if anyone else has seen this working with an SDR play and KX3? I have the
2.9 firmware installed. Thanks...Fred, WD5F
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Re: [Elecraft] Using SDR Play with KX3 Ocsilator Noise?

[Walter Underwood]

The KX3 is a direct conversion receiver and some local oscillator signal makes 
it out the antenna connector. The LO is at the carrier frequency of the tuned 
signal.

You need to use the 10 dB isolation preamp. That is designed to reduce that 
radiated RF.

This is also a good setting for Field Day with multiple rigs.

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

> On May 29, 2018, at 7:55 AM, Fred Nassar  wrote:
> 
> I am using the KX3 with SDR play as a pan adapter. I have noticed that
> there is some type of signal (quite strong) showing up on the pan adapter
> on the frequency that the KX3 is tuned. This signal moves as I move the
> VFO, so it seems to be some local oscillator issue. The result is the sdr
> play seems to be desensitized and signal levels on the KX3 are lower. When
> I engage the RX pre-amp, this signal goes away and all is right with the
> world. On most bands 10 db is enough to do the trick. On 17 meters it takes
> 30 db to get rid of it and remove the desensitization from the RX. Wonder
> if anyone else has seen this working with an SDR play and KX3? I have the
> 2.9 firmware installed. Thanks...Fred, WD5F
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Re: [Elecraft] Using SDR Play with KX3 Ocsilator Noise?

[Wayne Burdick]

Turn on MENU:RX ISO on the KX3. This turns on a isolation amp to keep the LO 
frequency out of the antenna input.

73,
Wayne
N6KR


> On May 29, 2018, at 7:55 AM, Fred Nassar  wrote:
> 
> I am using the KX3 with SDR play as a pan adapter. I have noticed that
> there is some type of signal (quite strong) showing up on the pan adapter
> on the frequency that the KX3 is tuned. This signal moves as I move the
> VFO, so it seems to be some local oscillator issue. The result is the sdr
> play seems to be desensitized and signal levels on the KX3 are lower. When
> I engage the RX pre-amp, this signal goes away and all is right with the
> world. On most bands 10 db is enough to do the trick. On 17 meters it takes
> 30 db to get rid of it and remove the desensitization from the RX. Wonder
> if anyone else has seen this working with an SDR play and KX3? I have the
> 2.9 firmware installed. Thanks...Fred, WD5F
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[Elecraft] power connector part number

[James Cizek]

Hi all,

Question here, I can't seem to find the answer to in the manual or with
google. Is the power cord that comes with the KX3 a special part for
Elecraft or is that a common "electronics distributor" part?  The manual
states a Switchcraft part number, but that part is for a standard straight
plug, not the molded 90 degree plug that comes with the radio.   I'd like
to purchase more of these plugs for various places/power sources and would
like to find an exact replacement so I can use some of them with the 3D
printed coax-to-powerpole adapters that are out there.

If the answer is "order it from Elecraft", that's acceptable, but if there
is a generic part number I can buy at the same time as other parts I need
(ie, mouser, digikey, etc) that would be good to know.

Thanks everyone.

73
James
KI0KN
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[Elecraft] Using SDR Play with KX3 Ocsilator Noise?

[Fred Nassar]

 I am using the KX3 with SDR play as a pan adapter. I have noticed that
there is some type of signal (quite strong) showing up on the pan adapter
on the frequency that the KX3 is tuned. This signal moves as I move the
VFO, so it seems to be some local oscillator issue. The result is the sdr
play seems to be desensitized and signal levels on the KX3 are lower. When
I engage the RX pre-amp, this signal goes away and all is right with the
world. On most bands 10 db is enough to do the trick. On 17 meters it takes
30 db to get rid of it and remove the desensitization from the RX. Wonder
if anyone else has seen this working with an SDR play and KX3? I have the
2.9 firmware installed. Thanks...Fred, WD5F
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Re: [Elecraft] KX2 "SWR/RF" display in v2.89

[Steve Sergeant]

This has happened to me often enough that I should have learned to read
my manuals cover-to-cover, which I never do: A feature I had no use for
became inadvertently activated, and sabotaged my normal operating modes.

In this case, it was the CW-in-SSB feature, which apparently deactivates
the RF/SWR meter in SSB mode. It's described on page 45 of the most
recent manual.

--... ...--
SteveSgt, KC6ZKT


On 5/28/18 21:33 PM, Grant Youngman wrote:
> Key the transmitter and then adjust Mic Gain … 
> 
> Grant NQ5T
> K3 #2091, KX3 #8342
> 
>> On May 28, 2018, at 10:19 PM, Steve Sergeant > > wrote:
>>
>> Brian:
>>
>> That's the first thing I tried.
>>
>> While in USB/LSB or AM, tapping the KYR-SPOT/MIC knob toggles between
>> "13 WPM" and "MIC 30" on the VFO B display, but does not change the
>> meter to SWR/RF.
>>
>> The next clue is that I do see the SWR/RF meter when in CW mode, but not
>> in USB/LSB nor in AM. When I tap the KYR-SPOT/MIC knob in CW mode, the
>> VFO B display shows "SPOT" and a tone is heard through the speaker.
> 
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[Elecraft] Stop pub

[Louis Chastagner via Elecraft]

Please stop to send diffusion mail

Envoyé de mon iPhone
Chastagner Louis
0033(0)671118679


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