Fox Hunt V6 Bare Bones


RETIRED – Please see our upgraded Foxhunt V7

When your closing in on the fox you may find the signals to be strong enough you can no longer find a peak or null with your antenna. Sometimes the signal is so strong that the RF will leak straight into the radio, connections and other equipment making the antenna useless. The solution is to use an offset attenuator. The circuit consists of a small RF generator, in this case 4MHz, which will mix with the incoming fox signal (such as 146.52MHz) and produce new signals at plus and minus the fox signal (142.52Mhz and 150.52Mhz). A potentiometer on the board changes the injection level of the RF generator which in turn attenuates the incoming mixed signal to your radio to a level where tracking can continue.

*Knob in picture is not included.

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 Click here for more information on fox hunting and the offset attenuator.

Add a tape measure beam and you have a great club kit build project!

There is a treasure trove of information with more tips, making fox boxes, and other events at


Foxhunt V6 Assembled

Drill Guide:


Example typical attenuation levels:

  Attenuation Attenuation
Attenuator OFF,at fox frequency 146.52MHz




Attenuator ON,at fox frequency 146.52MHz

-8 to -18dB



-/+4MHz Offset 142.52MHz / 150.52MHz

-30 to -60dB

446.00MHz / 454.00MHz

-35dB to -70dB

-/+8MHz Offset 138.52MHz / 154.52MHz

-35dB to -70dB

442.00MHz / 458MHz


-/+12MHz Offset 134.52MHz / 158.52MHz

-60dB to -80dB

438.00MHZ / 462.00MHz


*9V Battery not included. Unit can also run as low as 3V using 2-AAA batteries (holder not included) but minimum attenuation levels will be higher.

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Additional information

Weight 6 oz
Dimensions 8 × 5 × 3 in

SMD Kit, Thru-Hole Kit, Assembled, Partially (SMD) Assembled




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