[Elecraft] Started building my K2 have a few ?

Don Wilhelm w3fpr at earthlink.net
Mon Jul 16 13:24:33 EDT 2007


Matt,

Control Board C44 is not used - that location should have nothing in it.

I don't know the pin plating thickness, but if they are not wetting 
easily, check your soldering temperature.  I normally use 700 to 750 deg 
F and find no problem.

There is a big difference in wetting capability between solder as well - 
I use Multi-Core 63/37 with type 370 5 core flux and it wets nicely.  I 
had some old Weller Rosin core solder in the garage drawer that I 
recently tried to use when soldering some antenna wire - it had no 
wetting ability at all and I threw it in the trash.

73,
Don W3FPR

Matt Palmer wrote:
> Almost complete with the control board and had a couple questions for the
> peanut gallery. There are pads on the board for a C44, however this cap 
> does
> not appear in the inventory, and is not mentioned in the manual, I 
> assume it
> is for an additional module but we know what happens when you assume 
> things.
> Also does anyone know the gold plating thickness on the right angle
> connectors? I am generally unhappy with the wetting I am getting on several
> pins and am concerned about these solder joints breaking somewhere in the
> future, has anyone else had this problem (Before I get the canned responses
> I am using a Metcal RF soldering iron with a 037 tip and am building the
> board in compliance with JSTD 001D Class 3)


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