Hello Gerald,
I think as long as some kind of heat sink to replace the original thin factory metal plate, the heat issue under 10W digital mode can be solved. Therefore, it is really up to an individual to decide whether he should spend US$90 or a much lower cost to due with the heat issue.
It should not be any rocket science, all you need is a piece of thick metal plate to suck the heat from the PA transistors and with fins to facilitate air circulation.
A fully equipped KX3 costs well over US$1,000, it is a pity that we still have to worry about heat issue under full power digital mode. Of course, you can also argue that the light duty operators do not have to pay for what they don't need (i.e. heat sinks).
73
Johnny VR2XMC
p.s. I have already quit the KX3 yahoo group and will stay at this official Elecraft mail reflector.
________________________________
寄件人︰ Gerald Wilson <
[hidden email]>
收件人︰ Johnny Siu <
[hidden email]>; "
[hidden email]" <
[hidden email]>
傳送日期︰ 2014年08月13日 (週三) 6:41 PM
主題︰ Re: Some "Cool" heat sink info.
Johnny,
I wasn't sure if this was "the list" or not. I have heard a lot of
things about people getting booted for sharing links. Honestly I didn't
care. I care more about people having good information about their KX3s.
The test showed that the thermal bonding I did was really unnecessary.
That took a little of my time and like thermal paste always does, caused
a mess. If I had to do it again I wouldn't use the stuff or remove the
finish from my KX3.
73
KF5JNU
On 08/11/2014 07:45 AM, Johnny Siu wrote:
> Thanks for interesting information.
>
> You have wisely chosen to post the information here. If you posted
> similar information in the kx3 yahoo group, you would be banned from the
> group for promoting commercial products (unless the kx3 yahoo group
> moderator has changed his stance).
>
> 73
>
> Johnny VR2XMC
> *寄件人︰* Gerald Wilson <
[hidden email]>
> *收件人︰*
[hidden email]
> *傳送日期︰* 2014年08月11日 (週一) 6:40 PM
> *主題︰* [Elecraft] Some "Cool" heat sink info.
>
> It is a little long but has some good info and surprising results in it.
>
>
https://www.youtube.com/watch?feature=player_embedded&v=8ML1tRnUIZo>
> 73,
> KF5JNU
> ______________________________________________________________
>
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