Foxhunting Attenuators

Foxhunting attenuators can be used to help find a nearby hidden transmitter in the last few hundred feet when a radio's s-meter is maxed out. They have a male and female SMA connection so they can be easily inserted between a radio and an antenna. Avoid transmitting when these attenuators are connected to a radio.

AA1 Active Attenuator

The AA1 is an active / offset attenuator that creates an image of a transmitter on a new frequency. The signal strength of this image can be adjusted to bring it to a useable level. This design is based on the K0OV attenuator.

AA1 User Manual - v0.1

AA1 - $52
With SMA male and female connectors. Includes a CR2032 coin cell.

SMA F-F adapter - $6
Used to adapt the AA1 to a radio with a male SMA connector such as a Baofeng.

Passive Step Attenuators

Our passive step attenuators have 4 indepenently selectable attenuation stages of 5dB, 10dB, 20dB and 30dB. By enabling these stages, attenuation levels between 0dB and 65dB can easily be selected.


Switch Step Attenuator - $23
With 4 slide switches. When the switch is to the right, the stage is enabled.

Button Step Attenuators are out of stock.

Fixed Attenuators

These 2W inline fixed attenuators can be used on a receiver to reduce the signal strength of a nearby foxhunt transmitter. They have a male and female SMA connection so they can be easily inserted in place in any SMA connection.


ATT-20 - $14
20dB attenuator.

ATT-30 - $14
30dB attenuator.

ATT-20/30 - $25
One of each of the above. Combine for 50dB total attenuation.

Foxhunt List

Do you have foxhunts in your area? Are you looking for a nearby hunt? Visit https://foxhuntlist.com to find or submit a hunt.

Additional Byonics Foxhunting Products