[Elecraft] Re: KPA100 thermal pads for Q1/Q2

2007-02-23 Thread Jeff Kinzli

Going through the archives I think I have satisfied that I'm ok, and
will continue to use the old pads...

Thanks!

Jeff

On 2/23/07, Jeff Kinzli [EMAIL PROTECTED] wrote:

So I opened up the KPA100 tonight to do a quick mod, and noticed the
thermal pads under Q1/Q2 are a bit worn. It's like the pressure of me
tightening down on them has smashed through them a bit on the outer
edges of the pads.

Is there an issue with a path to ground here, or are they strictly
thermal in nature? I don't think the thermal integrity of them is
harmed but there could be a path to ground via the heatsink, I guess.

Thoughts? Any off-the-shelf replacements for them, like
heat-conductive paste, perhaps?

Thanks for any thoughts,

Jeff N6GQ


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Re: [Elecraft] Re: KPA100 thermal pads for Q1/Q2

2007-02-23 Thread David Wilburn
Saw a thread on that not to long ago.  They said all you need to do is 
snug them up again.  Elecraft did not like the thermal paste.  Having 
dealt with it on high frequency, high power transmitters, I would have 
to agree with them.  Stuff is a mess to work with.


David Wilburn
[EMAIL PROTECTED]



Jeff Kinzli wrote:

Going through the archives I think I have satisfied that I'm ok, and
will continue to use the old pads...

Thanks!

Jeff

On 2/23/07, Jeff Kinzli [EMAIL PROTECTED] wrote:

So I opened up the KPA100 tonight to do a quick mod, and noticed the
thermal pads under Q1/Q2 are a bit worn. It's like the pressure of me
tightening down on them has smashed through them a bit on the outer
edges of the pads.

Is there an issue with a path to ground here, or are they strictly
thermal in nature? I don't think the thermal integrity of them is
harmed but there could be a path to ground via the heatsink, I guess.

Thoughts? Any off-the-shelf replacements for them, like
heat-conductive paste, perhaps?

Thanks for any thoughts,

Jeff N6GQ


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