Re: [Elecraft] KX3/KPA100/Powerwerx Revisited

[Walter Underwood]

Are the fans on those power supplies running? Both of those power supplies have 
fans on the back.

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

> On Jun 12, 2022, at 12:51 PM, Jim Ruff via Elecraft 
>  wrote:
> 
> Thanks everyone for your quick responses.  So far, none of the suggested 
> solutions have worked, so I hooked the KPA100 up to a different power supply, 
> an Alinco DM-330MV, and I had the same whirling noise, only not quite as 
> loud.  
> 
> This leads me to believe that something in the KPA100 is causing some kind of 
> line noise to the power supply.  Is there a fix for this?  If not, the noise 
> doesn't really bother me, but is this noise affecting my signal when I TX?  
> That is my real concern and I should have made that clearer in my first email.
> Thanks,Jim W7JHR
> 
> 
> 
> Sent from Yahoo Mail. Get the app
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Re: [Elecraft] KX3 and Heatsink

[Tim Tucker]

Several years ago, I published a short article and accompanying video
comparing the original KX3 heat sink to the CoolerKX model including a
basic report on cooling performance. This one has since been discontinued,
but is similar in design to the PAE KX32 model.  I never obtained the
updated Elecraft version, but I would be very (pleasantly) surprised if it
could match the performance of a well designed heat sink such as these.

https://www.worldwidedx.com/threads/cooler-kx-plus-heatsink-for-elecraft-kx3-installation-video.179532/

Tim



On Mon, Jun 13, 2022 at 8:21 PM Jim Brown  wrote:

> On 6/13/2022 7:36 PM, Eric Norris wrote:
> > How difficult is it to install the later factory heatsink on an early
> KX3?
>
> Very easy.
>
> 73, Jim K9YC
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AE6LX, Amateur Radio
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Re: [Elecraft] KX3 and Heatsink

[Jim Brown]

On 6/13/2022 7:36 PM, Eric Norris wrote:

How difficult is it to install the later factory heatsink on an early KX3?


Very easy.

73, Jim K9YC
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Re: [Elecraft] KX3 and Heatsink

[Walter Underwood]

Instructions are here. Doesn’t look difficult.

https://ftp.elecraft.com/KX3/Mod%20Notes%20Alerts/E740254%20KX3HSMDKT%20Heat%20Sink%20Installation%20rev%20B.pdf
 


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

> On Jun 13, 2022, at 7:36 PM, Eric Norris  wrote:
> 
> How difficult is it to install the later factory heatsink on an early KX3?
> 
> 73 Eric WD6DBM
> 
> On Mon, Jun 13, 2022, 5:20 PM Don Wilhelm  wrote:
> 
>> Bill,
>> 
>> If you run 12 watts on AM, FM and digital then the supplied heatsink
>> (assuming it is the newer heatsink the wraps around the bottom of the
>> KX3) then it should be adequate.
>> If you want to run the full 15 watts on those modes, I would suggest
>> adding the Pro Audio Engineering heatsink for additional cooling of the PA.
>> 
>> Early versions of the heatsink had only a plate on the back which was
>> adequate for 12 watts on low duty cycle operation - Tx for 2 minutes and
>> then a RX period of about 3 minutes or more.
>> 
>> The KX3 will protect itself by reducing power if it gets too hot.
>> 
>> 73,
>> Don W3FPR
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Re: [Elecraft] K3S - High SWR on 6 Meters

[john]

Does it do this if you transmit a long carrier into your antenna using the
tune button?  Can you transmit FT8 into a dummy load OK? 

John KK9A
   

N4ST wrote:

So, received a new KLPA3A & KPA3A from Elecraft in exchange for my old ones
plus $$.
Installed the new KLPA3A & KPA3A and passed LP and HP TX Calibration.
My 6M beam measures 1.06 SWR on analyzer.
CW Key down, 100W, I get 1.2 on external SWR meter and 1 bar on K3S SWR
meter.
With FT8 I'm OK for 1 or 2 transmits and then I get infinity on external SWR
meter and full scale on K3S SWR meter, but full power out.
If I switch to a dummy load, I get zero power out (fold back?)
If I operate FT8 at 8 watts with the beam, I get 1.2 on external SWR meter
and 1 bar on K3S SWR meter and 8 watts out.
Going back to CW full power seems to perform a reset.  Everything still fine
in CW, but now FT8 is OK for 1 or 2 transmits and then high SWR returns.

Any advice?
A spur/oscillation in the KPA3A?
A relay stuck/not switching?

My TenTec Eagle is carrying the load for me during these 6M openings.
(46 states worked in last few weeks)


___ 
73,
Jim - N4ST

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Re: [Elecraft] KX3 and Heatsink

[Eric Norris]

How difficult is it to install the later factory heatsink on an early KX3?

73 Eric WD6DBM

On Mon, Jun 13, 2022, 5:20 PM Don Wilhelm  wrote:

> Bill,
>
> If you run 12 watts on AM, FM and digital then the supplied heatsink
> (assuming it is the newer heatsink the wraps around the bottom of the
> KX3) then it should be adequate.
> If you want to run the full 15 watts on those modes, I would suggest
> adding the Pro Audio Engineering heatsink for additional cooling of the PA.
>
> Early versions of the heatsink had only a plate on the back which was
> adequate for 12 watts on low duty cycle operation - Tx for 2 minutes and
> then a RX period of about 3 minutes or more.
>
> The KX3 will protect itself by reducing power if it gets too hot.
>
> 73,
> Don W3FPR
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Re: [Elecraft] KX3 and Heatsink

[Don Wilhelm]

Bill,

If you run 12 watts on AM, FM and digital then the supplied heatsink 
(assuming it is the newer heatsink the wraps around the bottom of the 
KX3) then it should be adequate.
If you want to run the full 15 watts on those modes, I would suggest 
adding the Pro Audio Engineering heatsink for additional cooling of the PA.


Early versions of the heatsink had only a plate on the back which was 
adequate for 12 watts on low duty cycle operation - Tx for 2 minutes and 
then a RX period of about 3 minutes or more.


The KX3 will protect itself by reducing power if it gets too hot.

73,
Don W3FPR
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Re: [Elecraft] KX3 and Heatsink

[Julia Tuttle]

Yeah, what Eric said. Elecraft says, in the "Output Power" specification:
"5 W or less recommended for high-duty-cycle modes (FM, AM, DATA). Power
will automatically be reduced if PA temperature or current limits are
exceeded." The stock heatsink is generally adequate *within* that
recommendation. If you'd like to *exceed* it, you'll benefit from an
aftermarket heatsink. I have the "ultimate" ProAudio one as well, and it is
generally adequate up to the max power output of the KX3 (10-15 W) on
high-duty-cycle modes.

73,

Julie

On Mon, Jun 13, 2022 at 5:12 PM Eric Garner  wrote:

> When you say " Elecraft-supplied heat sink" do you just mean the
> little heat spreader plate?
>
> The factory provided thermal solution is totally fine unless you want to
> run high duty cycle modes at full power. I have the proaudio ultimate (
> https://proaudioeng.com/pae-kx32-ultimate-heatsink-kit-elecraft-kx3/) on
> mine and have no complaints.
>
> Eric KI7LTT
>
>
> On Mon, Jun 13, 2022 at 1:54 PM Bill Lederer  wrote:
>
> > Folks:
> >
> > I have a recently-purchased KX3 that includes the Elecraft-supplied heat
> > sink.
> >
> > Is there any opinion of this does an adequate job compared to the
> ProAudio
> > one?
> >
> > Thanks,
> > --
> > --w8lvn--
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>
>
> --
> --Eric
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Re: [Elecraft] KX3 and Heatsink

[Eric Garner]

When you say " Elecraft-supplied heat sink" do you just mean the
little heat spreader plate?

The factory provided thermal solution is totally fine unless you want to
run high duty cycle modes at full power. I have the proaudio ultimate (
https://proaudioeng.com/pae-kx32-ultimate-heatsink-kit-elecraft-kx3/) on
mine and have no complaints.

Eric KI7LTT


On Mon, Jun 13, 2022 at 1:54 PM Bill Lederer  wrote:

> Folks:
>
> I have a recently-purchased KX3 that includes the Elecraft-supplied heat
> sink.
>
> Is there any opinion of this does an adequate job compared to the ProAudio
> one?
>
> Thanks,
> --
> --w8lvn--
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-- 
--Eric
_
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Re: [Elecraft] K3S - High SWR on 6 Meters

[Mike Fatchett W0MU]

What is the 6m antenna, how far away is it from the xmitter? Sounds like 
an issue with a balun or matching overheating with the stress of FT8?


I would hook the K3 up directly to the 6m antenna or the dummy load.  
Something is certainly acting odd.


W0MU

On 6/13/2022 2:07 PM, N4ST wrote:

So, received a new KLPA3A & KPA3A from Elecraft in exchange for my old ones
plus $$.
Installed the new KLPA3A & KPA3A and passed LP and HP TX Calibration.
My 6M beam measures 1.06 SWR on analyzer.
CW Key down, 100W, I get 1.2 on external SWR meter and 1 bar on K3S SWR
meter.
With FT8 I'm OK for 1 or 2 transmits and then I get infinity on external SWR
meter and full scale on K3S SWR meter, but full power out.
If I switch to a dummy load, I get zero power out (fold back?)
If I operate FT8 at 8 watts with the beam, I get 1.2 on external SWR meter
and 1 bar on K3S SWR meter and 8 watts out.
Going back to CW full power seems to perform a reset.  Everything still fine
in CW, but now FT8 is OK for 1 or 2 transmits and then high SWR returns.

Any advice?
A spur/oscillation in the KPA3A?
A relay stuck/not switching?

My TenTec Eagle is carrying the load for me during these 6M openings.
(46 states worked in last few weeks)


___
73,
Jim - N4ST


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[Elecraft] KX3 and Heatsink

[Bill Lederer]

Folks:

I have a recently-purchased KX3 that includes the Elecraft-supplied heat
sink.

Is there any opinion of this does an adequate job compared to the ProAudio
one?

Thanks,
-- 
--w8lvn--
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Re: [Elecraft] K3S - High SWR on 6 Meters

[Joe Subich, W4TV]

> Any advice?
> A spur/oscillation in the KPA3A?
> A relay stuck/not switching?

Are you sure there is no breakdown in your antenna, feedline or
external antenna switch?  Infinite SWR on the external meter would
indicate an issue beyond it.

Are you seeing the problem on any other band?  with any other antenna?

I recently went through a "High SWR" issue with my K3 that turned out
to be a bad coaxial jumper (between rig and switch that allows me to
switch rigs) even though the jumper does not test bad with an ohm meter
(no shorts, opens or intermittents as either connector is flexed or
twisted).

73,

   ... Joe, W4TV


On 2022-06-13 4:07 PM, N4ST wrote:

So, received a new KLPA3A & KPA3A from Elecraft in exchange for my old ones
plus $$.
Installed the new KLPA3A & KPA3A and passed LP and HP TX Calibration.
My 6M beam measures 1.06 SWR on analyzer.
CW Key down, 100W, I get 1.2 on external SWR meter and 1 bar on K3S SWR
meter.
With FT8 I'm OK for 1 or 2 transmits and then I get infinity on external SWR
meter and full scale on K3S SWR meter, but full power out.
If I switch to a dummy load, I get zero power out (fold back?)
If I operate FT8 at 8 watts with the beam, I get 1.2 on external SWR meter
and 1 bar on K3S SWR meter and 8 watts out.
Going back to CW full power seems to perform a reset.  Everything still fine
in CW, but now FT8 is OK for 1 or 2 transmits and then high SWR returns.

Any advice?
A spur/oscillation in the KPA3A?
A relay stuck/not switching?

My TenTec Eagle is carrying the load for me during these 6M openings.
(46 states worked in last few weeks)


___
73,
Jim - N4ST




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[Elecraft] K3S - High SWR on 6 Meters

[N4ST]

So, received a new KLPA3A & KPA3A from Elecraft in exchange for my old ones
plus $$.
Installed the new KLPA3A & KPA3A and passed LP and HP TX Calibration.
My 6M beam measures 1.06 SWR on analyzer.
CW Key down, 100W, I get 1.2 on external SWR meter and 1 bar on K3S SWR
meter.
With FT8 I'm OK for 1 or 2 transmits and then I get infinity on external SWR
meter and full scale on K3S SWR meter, but full power out.
If I switch to a dummy load, I get zero power out (fold back?)
If I operate FT8 at 8 watts with the beam, I get 1.2 on external SWR meter
and 1 bar on K3S SWR meter and 8 watts out.
Going back to CW full power seems to perform a reset.  Everything still fine
in CW, but now FT8 is OK for 1 or 2 transmits and then high SWR returns.

Any advice?
A spur/oscillation in the KPA3A?
A relay stuck/not switching?

My TenTec Eagle is carrying the load for me during these 6M openings.
(46 states worked in last few weeks)


___ 
73,
Jim - N4ST


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Re: [Elecraft] Options for contest logging software under Linux

[Kevin Anderson via Elecraft]

Kevin, KD5ONS,

Depending on your Linux  background, and your goals with contesting, for your 
Option #3, I would recommend TRLog for Linux,
https://www.kkn.net/trlinux/

This is a port by Kevin Schmidt, W9CF, that migrates Tree's (K6TR) TR-Log using 
its native Pascal source code (by permission of Tree, with necessary 
modifications) to Linux. So this is the real program, and not running an 
emulation of any sort. 

There is a high learning curve to getting proficient in using TRLog (as there 
was in the original DOS version) in configuring things for contests to have 
shortcuts and function keys work the way you might like them, as it relies 
heavily on the keyboard and not the mouse. But if you are at all used any of 
the old DOS-based contest logging programs (as I used NA, plus some CT, before 
this with a parallel port keying interface), if will seem familiar. What I 
especially like for TRLog for Linux, as I contest primarily with CW, is that it 
gave me a way to migrate my contesting to Linux (my preferred OS at home) using 
K1EL's WinKeyer (I have the WKMini) on laptops with only USB ports for 
interfacing.  There is some Linux configuration needed, so still not for the 
novice Linux user, but W9CF's instructions help with most of it.

Cheers/73,

Kevin Anderson, K9IUA

-
Kevin Anderson, Dubuque IA USA, K9IUA
k9iua (at) yahoo (dot) com
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[Elecraft] Remote Connect using Elecraft Remote Program

[Domenick Fusca]

I am a bit confused on what I need to configure to set up a remote
connection to my KPA1500 amp.  My primary confusion is what should be
the IP addresses to enter?

There are 3 connect options made available through the Remote program.
(1) Local Connect - I am successfully using this at home where my amp
and radio are located.
(2) Host remote - by the name this sounds to me this expects a host or
PC that is located in the shack and I am connecting to that host.
(3) Connect remote - this sounds like the one for me to remotely
connect directly to the amp. I'm not sure what I enter here for IP
address.  My thought is to enter my WAN ip address and for port I have
a port defined with port forwarding also defined.  It also asks for
username and password, now this really throws me off.  Does the amp
have a username and password that maybe I need to define?

Maybe my confusion is the result of thinking I can remote connect to
the amp without a host (PC) in the shack..  How can I use the Remote
program to connect to the amp without a pc in the shack?

-- 

Thank You,
Domenick - WA2GOT
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