A Sensitive Field Strength Meter for Foxhunting (QST)

In his A Sensitive Field Strength Meter for Foxhunting article (a free preview from the July 2021 issue of QST Magazine), Woody White, KZ4AK, presents the Field Strength Meter (FSM) for Foxhunting he built based on a design featured in the June 2001 QST article Simple RF-Power Measurement by Les Hayward, W7ZOI, and Bob Larking, W7PUA.

KZ4AK begins with a brief discussion of the W7ZOI/W7PUA digital readout FSM he built. And he quickly arrives at a key design consideration relevant to Foxhunting: “… signal trends are harder to follow on digital readouts than with an analog meter.” 1

His article covers:

  • Why a sensitive wide dynamic range FSM is a useful Foxhunting tool
  • Considerations related to the meter’s lack of selectivity
  • Circuit simplifications for Foxhunting and construction style

KZ4AK’s article references two QST articles about similar FSMs and includes the complete schemetic diagram for his FSM.

  1. “A Sensitive Field Strength Meter for Foxhunting”, ARRL The national association for Amateur Radio, accessed June 17 2021, http://www.arrl.org/files/file/QST/This%20Month%20in%20QST/2021/07%20July%202021/2021-07%20WHITE%20Sensitive%20field%20strength%20meter.pdf↩︎