Last month I wrote some about making a notch filter for the AM band. However, before you have any signals to notch out, you must first, of course, have some signal to begin with. Let’s talk a little ...

Magnetic loop antennas are great if you are limited on space since they are just a potentially small loop of wire. The problem is, they are sharply tuned. You normally have an adjustment capacitor to ...

One of the first antenna projects many new operators make is the simple 2-meter "J pole." Usually made out of copper plumbing pipe (and called by a variety of names including plumber's delight and ...