CQ Amateur Radio

Build a Foxhunt Variable Attenuator

In the summer of 2020, hams in our area were desperate for something, anything, to do while faced with COVID-19 restrictions on group gatherings. Two clubs, the Woodbridge Wireless and Ole Virginia Hams, got together and sponsored a foxhunt activity that could be safely held outdoors.

Although I’d never participated in a foxhunt, I did have prior work experience in basic direction-finding systems using antennas and receivers. Figuring that I’d be “a natural” for this event, I thought I’d have no problems finding the hidden fox. Instead, I failed miserably. In my haste to get my handheld radio and antenna ready, I had forgotten to borrow a step attenuator from the laboratory at work. Instead of being able to attenuate the strongest signals, I had to

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