[RFI] Maintaining 50 Ohms...

[Jim Brown]

On 9/18/2021 4:35 AM, Dave wrote:
> I will build a small chassis and put them on inside, with a pair of 
> SO-239s.

I've deleted the original post in this thread. Did it start with a choke 
with the bleed included? Several thoughts. First, the first choke in any 
system should be at the antenna feedpoint, not in the shack. Second, for 
reasons of dissipation, chokes should not be enclosed, or if they are 
enclosed, must be provided with sufficient ventilation. There's an 
addition to the Cookbook from NA6O, who did some serious lab work on 
that, and added it to chokes for the N6RO contesting station.

Third, if chokes are inside a conductive box with connectors mounted to 
it, the box will short around the choke.

73, Jim K9YC