[HomeBrew] RF Pad Construction Layout

[Dennis L. Wade]

Hi Joe,

	Yes..I know that project well.  Its been around for a while.  
However, I should have been more specific about what I want to build.

	What I need is a fixed pad of 12 db which has a 50 ohm input and a 
120 ohm output.  So, I don't have to worry about switches and the 
like, but just how to arrange the components in the box.

	I understand that shielding the resistors is important.  Seems there 
might be a way to do this with etched PC board with possibly the 
shunt to ground elements (in a pi section) underneath with minimal 
leads coming up and  the series element on top?  Maybe wide flat 
traces to very short leads to/from the resistor?  Comments?

	I am having trouble visualizing the brass tube concepts though...

		Any visual aids around?  :)

				Thanks for the replies...Dennis

> There was just such a project in QST a few years ago. The fellow used
> a machined out chunk of aluminum for what essentially was the chassis.
> The machining was done where switches needed the clearance and walls
> remained between the switches for shielding since crosstalk between
> switches was the limiting performance factor at low levels (high
> attenuation). DO you have past QST's?
> 
> Joe N1KHB

-----------------
"If you can remain calm, you just don't have all the facts"

Dennis Wade
KG6ZI
Carmichael, CA