Contest Club
QRV since 1993.


The stubs are replaced by high power bandpass filters to archive more out of band rejection.

We use a painting can for mechanical protection.

The two female connectors are the in/ output and they are connected together for form a "T"


The inner part of the coax is connected to the "T" and the outer coax to the painting can.


We use this configuration to make the stub for all bands.

Even the 92' long 160 meter stubs fitt into the can.


There is a lot of space left.

Don't forget to isolate the open end of the coax!!


There are adjusted with a spectrum analyser.to set the notch on the right place.


The stubs a connected behind the patch panel and before the antenne switchs.

They are always "in-line".

© Copyright 1996 - PI4CC All rights reserved.