ARRL The Doctor is In

Amateurs tend to take microphones for granted, but the right microphone can make a huge difference in how you sound on the air, and how well you are understood.

Receiving every signal is not always a good thing -- especially when you receive them all at once! The Doctor describes why proper filtering is important.

The Doctor answers listener questions. Send yours to doctor@arrl.org.

Adding an amp is not as straightforward as it sounds. There is much to consider, including AC power.

These classic devices are not as common as they used to be, but they are far from extinct.

This little-discussed receiver feature preserves your sanity, and so much more!

Is just any type of wire suitable for an antenna? The Doctor explains the options.

Your equipment should be in the "Goldilocks" zone: Not too hot, but also not too cold.

Most handheld transceivers come equipped with so-called "rubber duck" antennas. They aren't very efficient antennas, but do they really need to be efficient to be useful?

We devote the entire episode to answering listener questions!

Which is really better? Coaxial cable or one of the varieties of balanced feed lines such as "window line?" The answer isn't as clear cut as you may think.

Sometimes the best direction to send your signal is straight up!  

Discover the joys of operating with VERY low power.

Cleaning up a transmitter is important, and it requires more than a little soap!

The Doctor's tips for success when working with molten metal, otherwise known as the art of soldering. It also helps to know the art of unsoldering, when things do not go as planned.