K3 PA

[Brett Howard]

I've seen a few pictures of this module but nothing up close enough yet to
100% see it but it looks like there are some resistors that are sorts flying
around on the board.  They almost look like they are reworked on.  Is this
common in these rigs?  It seems like something like that may have been done
to help may layout more possible but would result in a manufacturability
compromise.  

 

Just wondering if someone who's seen it better than this internet warrior
had any thoughts/comments on it.  Before anyone gets angry I'm only asking
for my own edification and to learn something about the rig not to question
it in any way shape or form.

 

My favorite thing about Elecraft is that I learn something about my trade
every time I come here and build one.  I can't say I've ever bought a
YaeComWood and learned something other than just how to operate it.
Learning from all of you has made me a better engineer at work and has me
feeling a lot more comfortable with some analog circuits.  (My degrees are
in Computer Hardware Engineering and Computer Software Engineering) but my
ham radio background has me working as an EE.  Most of what I do is micro
processors and FPGA's though. :-)

 

 

 

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[Eric Swartz - WA6HHQ]

These are part of the PA feedback network that stabilizes PA gain over
temperature and the 1.8 - 50 MHz frequency range. They are elevated
above the PCB to improve heat dissipation and stray coupling. They are
installed during regular manufacturing of the KPA3 board.

73, Eric   WA6HHQ


Brett Howard wrote:

> I've seen a few pictures of this module but nothing up close enough yet to
> 100% see it but it looks like there are some resistors that are sorts flying
> around on the board.  They almost look like they are reworked on.  Is this
> common in these rigs?  It seems like something like that may have been done
> to help may layout more possible but would result in a manufacturability
> compromise.  
>
> Just wondering if someone who's seen it better than this internet warrior
> had any thoughts/comments on it.  Before anyone gets angry I'm only asking
> for my own edification and to learn something about the rig not to question
> it in any way shape or form.
>
> My favorite thing about Elecraft is that I learn something about my trade
> every time I come here and build one.  I can't say I've ever bought a
> YaeComWood and learned something other than just how to operate it.
> Learning from all of you has made me a better engineer at work and has me
> feeling a lot more comfortable with some analog circuits.  (My degrees are
> in Computer Hardware Engineering and Computer Software Engineering) but my
> ham radio background has me working as an EE.  Most of what I do is micro
> processors and FPGA's though. :-)
>  

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Elecraft web page: http://www.elecraft.com