An antenna tuner in the shack can be useful for matching non-resonant antennas. But these tuners may not always be the best solution. Find out why in the Remote Antenna Tuners episode of the ARRL The Doctor is in podcast.

“In radio or wireless telephony, Private Line is a term trademarked by Motorola to describe their implementation of Continuous Tone-Coded Squelch System (CTCSS), a method of using low-frequency subaudible tones to share a single radio channel among multiple users.”

Learn about the technical background of this squelch tone system in the CTCSS, DTMF and More episode of the ARRL The Doctor is in podcast.

“Many amateurs swear by large loop antennas for the HF bands, but what makes them so special?

Find out why in the HF Loop Antennas in this episode of the ARRL The Doctor is in podcast; a follow-up to to the Magnetic Loop Antennas episode.

Learn about the similarities of, and differences between, AM and SSB in this episode of the ARRL The Doctor is in podcast. The careful listener might gain some insight into why tuning has such a great effect on the sound of SSB transmissions.

Listen to a discussion about Meteor Scatter propagation in this episode of the ARRL The Doctor is In podcast.