[Elecraft] IF output buffer gain Mod

[Joe Planisky]

Hi Dave,

A "via" is a small hole in the circuit board used to connect traces  
from the top side of the board to the bottom. There's a small hollow  
metal insert in them that connects the two sides of the board (called  
"plated through vias")  They're usually smaller than a typical  
component mounting hole.

If you look at the picture in the instructions, the closeup on the  
right shows a via (the small hole) just to the left of R8.  In the  
picture on the left hand side, it shows the little 1/8 watt resistor  
with one lead going through that hole.

The little white plastic thing in the kit contains a surface mount  
resistor you can use to replace R8 with if you can do SMD soldering.   
If you don't have have a fine tipped soldering iron, steady hands, and  
a good magnifying headset, you can use the 1/8 watt leaded resistor  
instead.

The mod gives you 10 dB more signal at the IF output connector on the  
KXV3.  This is useful if you want to use a panadaptor (such as the P3)  
with your rig.  It won't make any difference in what you hear through  
your headphones.

73
--
Joe KB8AP

On Mar 1, 2010, at 8:49 PM, DBellW6AQ at aol.com wrote:

> So I see how to attach it but have no idea what a "via" is?
>
...

> And for that matter, what is the purpose of this  modification?
...

> 73, Dave
>