[Elecraft] IF output buffer gain Mod

[Radio Amateur N5GE]

On Mon, 1 Mar 2010 23:49:14 EST, DBellW6AQ at aol.com wrote:

>So I see how to attach it but have no idea what a "via" is?  I  built a KX 
>1 without ever running into a "via" I think.  And if you can see  the "via" 
>used to anchor one lead of the resistor in the photograph that is  in the 
>instructions you have either better eyes or a better imagination than I  do.  
>Apparently the "via" is the little plastic thing in the envelope  with the 
>resistor, but what is it for?
> 
>And for that matter, what is the purpose of this  modification?  10db more 
>signal level at the IF output gets me what  exactly?  I could use a little 
>more gain in my Heil BM-10 headphones, but  is this going to get that for me 
>without distortion?
> 
>1,000 pardons if this has already been beaten to death on the  reflector.
> 
>73, Dave

Howdy Dave,

Via's are holes in the circuit board that are plated through the board
to the other side.  Don't ask me why they are call via's ;o)

The purpose of the mod is to increase the signal output at the IF Out
connector that you would connect a Panadapter to.  Some Panadapter
need a little stronger signal from the K3 to enable you to see weak
signals in the Panadapter display.

If you're not using a Panadapter you don't need to do the
modification.

If that doesn't clear it up for you send me email off the list and
I'll try to help you.

73,

Tom, N5GE

K3 #806 with SUB RX, PR6, 
KRC2 and K144XV
K3 #1055 with PR6 and XV432
W1, 2 W2's and other small kits

http://www.n5ge.com
http://www.swotrc.net