Learn how to improve your radio listening experience in the Automatic Gain Control episode of the ARRL The Doctor is in podcast.

Learn about the type of wire to use when building your antenna in the Antenna Wire episode of the ARRL The Doctor is in podcast and learn some interesting facts.

Incident and event net traffic falls into two categories: formal message traffic and tactical traffic.

Tactical traffic consists of ad hoc messages about what is happening during an incident or event. And the purpose of a tactical traffic net is to enable all participating stations to pass traffic while it is still relevant.

Efficient tactical traffic nets engage in succinct and unambiguous communication through the disciplined use of a well practiced protocol which eliminates over identification and avoids the introduction of extraneous words.

One such tactical traffic net protocol is illustrated in a Tactical Communications Exercise conducted during an AEN-MAR net. In this recording you will hear net participants practicing their tactical communication protocol as they check-in, submit their reports, and engage in discussion.

Channel bandwidth is a precious commodity on a tactical net. Remember, a tactical net intends to move “right-now” messages while they’re still relevant. Extraneous words—especially when everybody starts adding them out of habit—add up quickly to limit how much message traffic can move across the net. They especially add up during check-ins or when Net Control polls stations for reports. [The AEN-MAR Tactical Communications Exercise net activity focuses] on and exercise[s] how to hit your message and move on. Say more, clearly, with fewer words so others can get their traffic passed, too ¹

An introductory video by W2AEW describing how complex impedance and admittance are represented on the Smith Chart, and how to convert between them. Includes a demonstration using a [VNA](https://en.wikipedia.org/wiki/Network_analyzer_(electrical) to illustrate the complex impedance representation on a live smith chart with variable resistive and reactive components.)

Listen to a discussion about maintaining proper equipment temperature in the Keeping Cool episode of the ARRL The Doctor is in podcast and learn some interesting facts.