Here's the circuit of my homebrew fox hunt attenuator. It was dictated, on-the-air, by my friend OM Guru VU2GUR.
It's a simple offset attenuator with a low part count.
The potentiometer is used to vary the signal strength of the attenuated signal, available at +1MHz, +2MHz, -1MHz, -2MHz of the fox frequency.
It's to the credit of the original designer that this attenuator was successsfully employed at a couple of fox hunts in Bangalore.