Curt,
I just finished a KPA100 build for my K2 (#5945), so I don't quite
have the perspective of installing into an pre-3000 K2, but I can tell
you that the KPA100 kits do come with a couple of mod-kits for earlier
K2s. One of them is an ALC mod and the other is a keying waveform mod,
if I remember right. In my case, those mods had already been
incorporated into the K2 that I had, so I didn't need to install them.
The BFO mod is pretty easy, and was included in my K2 also. It
consists of a small board and not many parts. It installs right
beneath where the DSP or KAF2 would install.
The KPA100 is a quick build compared to the K2. Many of the parts are
physically bigger and the toroid wires are mostly heavier guage, so
IMHO it was a much easier build. I think mine went over a weekend, and
it worked on first powerup. Properly tinning the toroid leads I think
is one of the most important things here. Initial alignment went
easily as well.
Best of luck, you won't be disappointed.
Jeff N6GQ (ex KA6LAF)
K2/100 #5945
On 2/22/07, Curt Milton <[EMAIL PROTECTED]> wrote:
I confess I have not been inside my K2 since I installed the SSB board, not too
long after I built it. I still need to perform the mod on the static-ky audio
(mine isnt that bad but I think its time).
Now I am contemplating upgrading to 100 watts, once I figure out how many
upgrades I need to make. I downloaded the Upgrading to Rev B instructions, and
the KPA100 instructions. And I am trying to digest all this!
My current firmware is 2.01F.
Now what purchases must I make (in addition to KPA100) to enjoy this rig at
100w?
I am sensing with the additional thermal load that perhaps the PLL and BFO
upgrades are prudent. OK another $29 here does not sound too scary. My QRP K2
has nice frequency accuracy thru 20m, but on 10 and 15m i have noticed a small
error which puzzled me until I read about the PLL upgrade.
I am not contemplating adding DSP or an autotuner - so is my firmware good
enough ?
Is there anything else that I must upgrade to enjoy this rig at 100 w ?
I understand it is prudent to evaluate all the aspects in the revision B
instructions while the rig is receiving other mods, but I havent noticed any of
these issues yet.
Looking for enlightenment on how to upgrade this middle-aged K2.
73, curt
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