[Elecraft] Re: K2 Rev B Component kit for unbuilt Rev A K2s

[Wayne Burdick]

Larry, you can certainly build the K2 as rev A, then do the rev B upgrade if you
feel that the changes are worthwhile. You can download the rev B upgrade
document to see what the hardware mods are.

As for firmware, the most important change in rev 2.03 is support for the KAT100
ATU. If you don't think you'll be building a KAT100, you can stick with 2.02H. 

Other minor changes: 

- Power is now reduced to 2 or 20 watts when TUNE is pressed 
  (20 W if a KPA100 is installed and enabled).

- Support provided for a builder-installed front-panel LED that
  will turn on whenever SPLIT, RIT, or XIT is in effect.
  (This is the subject of an application note to be posted soon.)

Hope this helps you decide.

73,
Wayne,
N6KR


Larry Mollica wrote:
> 
> Questions...
> 
> I'd like to know if there are any feature improvements between the
> required MCU 2.03D / IOC 1.07 firmware, and the 2.02h/102 lurking in
> my bags of K2 parts. (Excluding A to B hardware improvements.)
> 
> And while we're at it, may I ask how seriously required is this
> firmware anyway? Modified A-to-B boards are not really the same
> circuits as factory B boards? What's the deal?
> 
> Not to gripe, it's just the beefy total of the two kits is giving me
> pause to consider more closely whether or not to make do with the old
> boards. More data would be helpful.
> 
> Thanks,
> Larry


-----

http://www.elecraft.com