[Elecraft] IF Buffer & Noise Reduction Mods

[Richard Williams]

I just finished installing the IF buffer and noise reduction mods and have 
to say that I found the IF Buffer mod less "painfull" than the Noise 
reduction one.

Remove and replace one part; of which the most difficult thing was getting 
the new SMT resistor into position.  Once there, I used a very small 
jewelers screwdriver to hold in place,  put a little solder on the end of 
iron tip and then "spot soldered" one end;  then I could solder the other 
end, finally going back to the other end and properly soldering it.  I did 
not "cut" the SMT in half to remove it,  found it very easy to use solder 
wick and then heat the resistor so it would slide off.

The noise reduction mod took a lot more time getting the diodes and 
resistors trimmed, soldered, and into position.  One thing to be aware of is 
the resistor is tied to the cathode of the diode for the components on the 
left side of the K3 and the resistor is tied to the anode of the diode for 
the components in the center mod.

Dick  K8ZTT