[Elecraft] KAT1 Problem

[Dave Hottell]

Hi Al,

There were some defective PIC controllers shipped on some KAT1's.  Email
Gary and see if he will ship you a replacement.  

There were a group of PIC's that were misprogrammed.  Unfortunately there
were shipped to customers.  I got one and some others have posted similar
notes.

On your second question, Yes.  Although only documented on the errata sheet
for the K1, and not the KAT1, that jumper replaces having to remove R36
when installing the KAT1.

73 es gl,
Dave
AB9CA






At 06:15 PM 6/2/02 -0400, Al Moyle wrote:
>Gang,
>
>I finished assembling and aligning the K1 (S/N 1202) that I bought at 
>Dayton ... it works great!
>
>Now I've moved on to the KAT1 (purchased at the same time as the K1) and 
>have run into a problem.  Building the tuner wasn't a problem ... it only 
>took about 3 hours to complete.  The problem came when I tried to do the 
>"Initial Tests" on page 9 of the manual.  The K1 powered up normally ... 
>but in the second step when I tried to edit the "ATU" menu item, I got the 
>dreaded "ATU menu parameter shows '---' at all times" error.  I went 
>through the troubleshooting on page 14.  The rig has version 109 of the 
>main processor firmware (according to the label on the chip and 
>confirmed  by holding down a button while powering up the K1).  The 
>connectors on the KAT1 and the KFL1-4 filter board are all mounted 
>correctly and I've inspected both sides of the boards several times to be 
>sure that there are no unsoldered pins or solder bridges.  I checked the 
>power and ground connections to the processor on the KAT1 and used an ohm 
>meter to check for shorts between adjacent pins of the processor.  Yes, the 
>processor is fully seated in its socket, with no bent pins, and it is not 
>plugged in backwards.  I checked to be sure that there is continuity 
>between each of the processor pins and appropriate other points on the board.
>
>Any ideas?  Has anyone else experienced this behavior?
>
>Oh, one other question ... I don't see any mention in the KAT1 manual of 
>the three-pin header P3 which is located on the K1 RF board, near J5.  Is 
>this jumper meant to take the place of lifting one end of R36 when 
>installing the KAT1 in the K1?
>
>Thanks,
>Al Moyle
>N3KFL
>
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