[Elecraft] On a more technical note.....

[Doug Person]

I must admit I placed a dab of thermal grease on each of the LPA final 
transistors.  I couldn't help myself.  Probably doesn't need it.  But I 
certainly feel better knowing that the thermal transfer will be just a 
tad more efficient.

Doug -- K0DXV
K3/100 #77

Ron D'Eau Claire wrote:
> Another Option module that is easier done up during the initial build - even
> more so than the KPA3 - is the KXV3 interface module. It's nestled under the
> KIO3 interface on the back and requires removing the KIO3 and its two pony
> boards from the back to plug it in, and removing the bottom covers to
> install and connect a cable, then reinstalling the KIO3 and putting the
> covers back. 
>
> Still, it's less than a 30-minute procedure, but definitely a 'no brainer'
> if done during the original build. 
>
> While we're talking disassembly, let me point out that Wayne specifically
> avoided needing thermal pads or complicated hardware stacks anywhere on the
> K3 bottom cover assembly even though the rear section is the heat sink for
> the 10-watt low power amplifier (LPA) module. Pulling the bottom covers is
> simply a matter of removing screws and  lifting the covers off. Reinstalling
> the covers involves setting them in place and putting all the screws back
> in. The only concession to the needs of the LPA transistors is that the
> screws that secure the bottom cover to them are slightly longer than the
> others and have lock washers under their heads. Those screws thread directly
> into standoffs. No insulators or other hardware is needed. 
>
> Ron AC7AC 
>
>
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