Create a Band Reject Filter using Coax - OPEN STUB VERSION (049a)

Here's a fun one for you!
Let's build a Band Reject Filter using just coax!
And we can get some pretty amazing rejection with it!
Admittedly, they are not not narrow band filters by any stretch of the imagination. The only have a Q around 110 according to my bench experiments here in the shop.
There are two ways to do this. In this video I will show you the easiest way to do it: with the OPEN Stub.

In the next video I will show you how to do it with a SHORTED Stub. Not as easy of a task.

SPEED OF LIGHT VALUES
11802.85E6 inches/sec
29979.24E6 cm/sec

Here are the promised links for you:
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Step-By-Step Open Stub Cheat Sheet
https://drive.google.com/file/d/182zc...

Smith Chart - Downloadable FREE Complete Smith Chart
https://www.scribd.com/doc/57547182/S...

Time Markers for Your Convenience
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00:05 Initial Comments
02:22 How does this thing work?
06:19 How do we design one?
06:25 Know your materials!
07:06 What is your design frequency?
08:05 DEMO: Getting rid of Channel 11
08:09 The design parameters
09:37 Calculating the lengths
10:06 Preparing for creating the assembly
11:12 The final cut lengths
11:35 How I constructed it
12:55 Performance and Tuning
14:30 The Better way ... with adjustment!
14:42 How do we do this?
16:27 Things you need to know
16:49 Two ways to approach this design
18:18 WAY #1 - Step-By-Step
21:10 WAY #2 Step-By-Step
25:09 Performance and Tuning
27:18 Final Comments and Toodle-Oots
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