[Elecraft] K2 - getting ready to build

[Robert 'RC' Conley]

Don't forget Don's [W3FPR's] axiom
If you have a problem check your solder joints then recheck your
solder joints then check them again.
>From personal experience those joints with the exception of once were
always the problem
RC kc5wa
---------------------
On Jan 17, 2008 6:27 PM, Ron D'Eau Claire <ron at cobi.biz> wrote:
> Ken, KA0W wrote:
>
> I should be right behind you with the K2 construction. I wasn't going to do
> a K2, but have become brainwashed enough that I finally had to order the box
> of parts.
>
> If you hear any noise to the south of you it will be just me grumping after
> I screwed something up because I have no patience when building.
>
> -------------------------------------------------
> Ha, ha!!! Let's hope they are growls of pleasure, not pain!
>
> Take a D-E-E-E-P breath and do the build ONE step at a time, and double
> check your parts placement before soldering!
>
> I built my K2 in 2000. It's worked like a champ in spite of being one of the
> test machines for many of the "improvements" to the K2 gene pool over the
> years.
>
> Following this reflector since 2000, I've noticed one complaint begin to
> turn up among a few owners: intermittent problems!
>
> In every case that I've followed, the intermittent turned out to be a lead
> that was never soldered. Elecraft uses high quality boards with
> plated-through holes. A bare, unsoldered lead can hang in one of those holes
> for years before enough oxidation builds up or it becomes loose enough to
> start losing conductivity.
>
> So I suggest keeping the three following things in mind as you build:
>
> 1) All parts have a tendency to jump from one place to another without
> warning. After you put R3 in the spot for R3, when you reach for the
> soldering iron you may discover that while you looked away it: a) jumped to
> another location or b) changed to a different value. Parts tend to do this
> more easily as the hours wear on..
>
> 2) An unsoldered part remains unsoldered until you solder it, even if it's
> years later.
>
> 3) Intermittents are the worst sort of trouble to locate.
>
> Ron AC7AC
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: Elecraft at mailman.qth.net
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>



-- 
<http://www.geocities.com/kc5wa>
72/73 DE RC KC5WA
Flying Pigs #567
NAQCC #420
NETX #43
SKCC #089
ARCI-QRP #12572