[Elecraft] Did I get the wrong parts? DSP Kit

[Carl Jón Denbow]

Thanks, Don, for your help.  Lyle, KK7P, answered off list and we figured it
out together.  Your observations about U2 and U1 labeling were spot on! :-)
What was confusing me even more, I think, was that Elecraft actually gave me
an extra part (two of the aforementioned U2s).  I've now constructed the
KDSP2 board, but I can't install it yet, because I need to order new control
board firmware.  Mine is 1.09 and I need 2.10 or better, according to the
DSP board manual.  Thanks again for your response!

Carl
N8VZ

-----Original Message-----
From: Don Wilhelm [mailto:w3fpr at embarqmail.com] 
Sent: Tuesday, September 07, 2010 11:12 PM
To: Carl Jón Denbow
Cc: elecraft at mailman.qth.net
Subject: Re: [Elecraft] Did I get the wrong parts? DSP Kit

  Carl,

If you look closely at the 3 terminal regulator that is U2, you will see 
that what you read as "78 MOSCT" is actually "78 M05" which is a proper 
5 volt regulator - use it at U2.

You should have a 28 pin DIP with a piece of paper on the top with the 
KDSP2 firmware level.  Don't peel the paper off, just believe it is the 
ATMEGA8L which is to be installed in the socket at U1.

73,
Don W3FPR


On 9/7/2010 9:23 PM, Carl Jón Denbow wrote:
> I'm in the process of assembling my KDSP2 kit.  I'm at the point of
> installing U2; however, I seem to have a problem.  Both the components
that
> I think are U2 and U1 do not carry the markings indicated in the manual.
> Both of my parts that have the physical look of the part referenced in the
> manual as U2 say "78 MOSCT REC 746 G" on them.  According to the manual U2
> is supposed to be marked "LM340, 7805" and U1 is supposed to be marked
> "ATMEGA8L."  I don't have parts with either marking.  Can anyone help me
> sort this out?  My soldering iron is still hot, but my kit building has
> ground to a halt, since I find de-soldering not a lot of fun! :-)
>
> Tnxs and 73,
>
> Carl
> N8VZ
>