This doesn't quite match the topic heading, apoligies.
This is not a disparagment of the fine equipment from Elecraft. But it seems that building a
K2 or a k3 etc. never reaches an end point. Elecraft has just come out with a new DSP/clock
module to replace the old K2 "new Dsp/clock module. Making this change puts the K2 into the
$1000 category. I read somewhere the other day where a ham was changing a module in a
K3. I have been considering if I want to do the change in my K2. It works well enough as is
(except for minor shortcommings) and I am still comtemplating building a K3. My PRO III does
just about everything I need and my old TS-830 still works like the top of the line it was in its
youth. Then again, maybe a new bigger antenna is what I need. I seem to have as much trouble making up my mind as Hamlet did.
This happens on everything electronic in everyday life. You cell phone is constantly update. Your LCD TV now has firmware updates. You car has constant updates. Hell, even a stove has its processor board updated because the old one use to fail and render it a brick.
The difference is that when it is hardware, most changes/improvements are implemented in production. That is why if you get an early version, you may be SOL if out of warranty. My FT-950 had 2 rounds of EDSP firmware. Luckily, I have the newer one. The 950 underwent numerous improvements that made it go from a terrible receiver, to a pretty good one.
The nice think about Elecraft being in kit form, is that even though their models are the same, they are constantly updating the innards, allowing even older rigs to come up to date. You should be happy that this is available to you. Most people do not have this option.
Also, I would not lose sleep over this, because you could die worrying about not having the latest and greatest. Some people have an obsession with this.