subject:"Re\: \[Elecraft\] KX3 and Heatsink"

Re: [Elecraft] KX3 and Heatsink

2022-06-15 Thread df...@darc.de

When I bought my used KX3 there was a Windcamp heat sink installed. I have not 
much experience with high duty modes on full power because I can use the 
KXPA100 when power is a critical factor. But I think this solution is 
sufficcient, too. But it mostly is offered along with two side handles and a 
plastic cover and this set is not cheap despite the fact that it comes from 
china.

Some time ago I saw a DIY solution from an italian ham which is simple, 
affordable, and not too ugly:

https://kx3companion.com/2014/07/10/simple-cheap-and-effective-diy-heatsink-for-kx3/
 

And I think it will work for a KX3 when it would work for 5 CPUs.


73
Hans, DF3DD



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Re: [Elecraft] KX3 and Heatsink

2022-06-14 Thread Ed Cole

I added a heat sink to my KX3 a few years ago since I use it with long 
"key-down" digital modes such as wsjt-x (primarily on 6m).


I obtained the heat sink from VE7FMN and it installed easily.  Later 
Elecraft came out with its version which I bought (but have not 
installed).  Being a thin metal plate didn't seem comparable in heat 
conduction to the die-cast aluminum unit with cooling fins.  I tried 
finding VE7FMN's product and domain name is not registered so guessing 
he quit making them.


My testing results: http://www.kl7uw.com/KX3.htm

73, Ed - KL7UW
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Re: [Elecraft] KX3 and Heatsink

2022-06-14 Thread Bill Lederer

Thanks all for the replies.

I'll probably stick with the factory installed one, as I do have the 100
watt amp which I'll use if I need higher power.

Thanks,
w8lvn

On Tue, Jun 14, 2022 at 5:24 AM Rich WC3T  wrote:

> I have the latest revision stock heat sink and nary a thermal issue.
> Ever.
>
> 72,
> Rich Hurd / WC3T / DMR: 3142737
> Grid: FN20is
> Bureaucracy is always in search of self-preservation.  — AA7BQ
>
> > On Jun 13, 2022, at 22:47, Walter Underwood 
> wrote:
> >
> > Instructions are here. Doesn’t look difficult.
> >
> >
> https://ftp.elecraft.com/KX3/Mod%20Notes%20Alerts/E740254%20KX3HSMDKT%20Heat%20Sink%20Installation%20rev%20B.pdf
> <
> 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] KX3 and Heatsink

2022-06-14 Thread Rich WC3T

I have the latest revision stock heat sink and nary a thermal issue. Ever.  

72,
Rich Hurd / WC3T / DMR: 3142737  
Grid: FN20is
Bureaucracy is always in search of self-preservation.  — AA7BQ

> On Jun 13, 2022, at 22:47, Walter Underwood  wrote:
> 
> 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
>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
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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 norrislawfi...@gmail.com
>>> 
>> __
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> 
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Re: [Elecraft] KX3 and Heatsink

2022-06-13 Thread 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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Re: [Elecraft] KX3 and Heatsink

2022-06-13 Thread 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

2022-06-13 Thread 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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>> Message delivered to norrislawfi...@gmail.com
>> 
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Re: [Elecraft] KX3 and Heatsink

2022-06-13 Thread 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

2022-06-13 Thread 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

2022-06-13 Thread 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,
> > --
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>
>
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Re: [Elecraft] KX3 and Heatsink

2022-06-13 Thread 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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Re: [Elecraft] [KX3] KX3 heatsink

2012-11-20 Thread Lance Collister, W7GJ

Hello Niel,

In case you missed my email about JT65A frequency stability, I included 
information 
on the heat sinks I added to my KX3:

http://www.bigskyspaces.com/w7gj/KX3HeatSinks.htm

GL and VY 73, Lance


On 11/19/2012 5:30 PM, Niel Skousen wrote:
 I recall someone posting a heatsink that they'd done for the KX3, and were 
 intending to provide an aftermarket heatsink to the group.Can anyone 
 forward me a link or email address to follow up with ?

 Thanks
 Niel

 

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Re: [Elecraft] KX3 and Heatsink

Re: [Elecraft] KX3 and Heatsink

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