Strange ducting in our atmosphere? An alien repeater in outer space? No one really knows what causes this spooky phenomenon.

Long Delayed Echoes

ARRL The Doctor is In is a podcast based on the popular QST magazine column "The Doctor is In." Hosted by QST Editor in Chief Steve Ford, WB8IMY, and columnist Joel Hallas, W1ZR, the podcast is a lively 20-minute discussion of a wide range of technical topics. Sponsored by DX Engineering.

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The Best of the Doctor Is In: Coping with the Solar Minimum

The episode was originally distributed in June 2016.

The Best of the Doctor Is In: Are Linear Amplifiers Really Worthwhile?

The Best of The Doctor is In: Does CW Get Through When Nothing Else Can?

The Doctor answers a number of interesting questions from listeners.

Holiday Mailbag

Repeaters aren't the only ways to span long distances in the world above 50 MHz.

Long Delayed Echoes

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