[Elecraft] Question about installing KAT1 in my K1

[E Neubauer]

Anthony:
I almost did the same thing.  Your diagnosis is correct.  You have a version that is later than the ones requiring the cut.  The only thing that stopped me from doing the same thing was that the drawing in the manual didn't seem to match my board.
Go to page 7 in the KAT 1 manual.  Scratch out everything under "K1 RF Board Preparation".  And do not unsolder R36.  Turn to page 8.  Scratch out the top three steps on the page (above "Filter Board and KAT 1 Module Installation").
Because you have Revision E, all you should need to do is move the little tiny RF DET jumper (on the 3-pin header P3) to the KAT 1 position.  If you remove the KAT 1 from the radio later on, you should move that jumper back to the original pins.
Others may have additional details.  With help from Don Wilhelm and Ron D'Eau Claire I was able to get my K1 up and running!  Good luck!
Ed  - KB3SZZ

> From: wentwest at mac.com
> To: elecraft at mailman.qth.net
> Date: Tue, 7 Jul 2009 19:27:15 -0700
> Subject: [Elecraft] Question about installing KAT1 in my K1
> 
> Okay, so I have followed the directions in the KAT1 manual up to the  
> top of page 8, and I cut the trace to the right of "DRV," as it  
> indicates to.  After doing this, the next step is to "solder resistor  
> RF-R4 (5.6K)  on the bottom of the board between the two pads located  
> on either end of the cut trace segment."
> 
> Well, I am about to do that, but I just want to be sure that RF-R4 is  
> to be installed in addition to the R4 resistor of the same value that  
> was already installed during the build of the RF board.
> 
> I am a bit concerned that maybe cutting the trace and installing RF-R4  
> might not be the right procedure for my revision of the RF board (K1  
> RF Rev. Er).  If I shouldn't have cut the trace, it's too late, but I  
> was hoping someone out there might be able to shed light on this.
> 
> It seems strange, because there aren't 2 free pads, only the one at  
> the top.  If I am to install the additional 5.6K resistor, one end  
> would have to go to the lead of the already installed R4.  Is this  
> right??
> 
> I've triple checked my errata page, and both the manual for the K1,  
> and also the KAT1, and according to the documentation I think I have  
> followed the directions properly up to now.
> 
> Thanks for any reassurance or re-direction (if necessary) anyone may  
> be able to help me with before I continue.
> 
> Best,
> Anthony, W6GC
> 
> _________________
> Anthony Hardwick
> wentwest at mac.com
> 
> 
> 
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