[Elecraft] K2 new builder

[Andrew Vine]

George,

 

I have just completed a K2 build including SSB, Noise Blanker, 160 and DSP
options.  The 100W PA is work in progress.  

 

It is a fantastic kit and has gone together without any problems.  There is
very little room for any confusion when building it.  I suggest you take
your time with the build and enjoy it.  The finished radio compares very
well with my K3 and I actually prefer the K2's noise reduction.

 

A few detailed comments are as follows :-

 

A number of the supplied part numbers do not tally with either the parts
list or the build instructions.  However, it is not too difficult to figure
out what's what.  In particular on the K2 Control Board Parts List 

 

Part                        Appendix A description                 Supplied

 

RP5                        770103471
L103C471 T48

RP1                        10A3392G
CTSK0617770103392P

RP6                        10A3512G
CTSK0617770103512P

RP7                        77083333
CTSK073677083333P

RP3                        770103473
CTSK0743770103473P

RP2, RP4              08A3823G
CTSK082177083823P

 

U1                          SA602AN
SA612AN

 

Support at Elecraft failed to respond to my request for confirmation on
these parts but since everything works I can only assume that my assumptions
were correct.

 

I believe there are some typos in the RF Board Parts List (see page 1) which
are currently uncorrected in the latest Errata.  Six capacitor designators
are not listed under "Monolithic Cap 102" (C1, C2, C9, C17, C26 & C27) and
five under "Monolithic Cap 103" (C61, C181, C183, C184 & C186).   I found it
useful to tick off the designators as I used each part as a means of
ensuring that the right variety of component was being used.  With hindsight
I think this was probably unnecessary.  Again, disappointingly, Elecraft
have chosen not to respond to my query on this. 

 

Access to a good frequency counter and an oscilloscope made easy work of the
4 MHz Oscillator Calibration (p 63) and the Transmitter / Receiver alignment
(p78) and I would recommend their use.

 

I received a sheet entitled "K2 12M/10M BPF Mod" with my kit (together with
associated parts).  I was only after I had removed the first component to be
changed that I realised that the mods were unnecessary.  They were already
incorporated on my board.

 

Have fun and if you have any further question feel free to drop me an email.

 

Andrew, m0gjh

 

 

 

From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of W2bpi1 at aol.com
Sent: 12 March 2010 21:53
To: Elecraft at mailman.qth.net
Subject: [Elecraft] K2 new builder

 

I will be starting to build a K2 soon. It is ordered and  shipped. Anything 

I should look out for or any tips?     George/W2BPI