Bj,

As far as I know, there have been no changes in the KIO2 since its first production - and certainly there have been no functional changes.

Where did you see the "rev C" - was it on the board? Or is it only on the instructions? The Rev designation for the boards does not track the Rev designation for the manuals. Manuals are updated when a part number or part description needs to be modified. The only difference I can see between the KIO2 Rev B manual and the Rev C manual is that the length of the 4 conductor cable supplied in the parts list is 15 feet instead of the previous 10 feet.

As a more extreme example, current K2s use the B level boards, but the K2 manual is a revision I.

73,
Don W3FPR

On 12/3/2017 11:21 AM, Bj Rollison wrote:
I purchased a used K2 (S.N. 01215) with a KIO2 rev. B. This K2 also had the
Revision B K2ATOBKT installed.

What is the difference between the KIO2 Rev. B and Rev C, and should I
consider upgrading this to Rev. C?

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