Mounting bracket to be able to install 57mm radio devices or transponders concealed in the aircraft.
The frame provides a firm hold and covers the non-used controls of the device.
High quality, two-part metal construction. Rivet nuts on the underside allow easy assembly in many places in the aircraft.

Compatible with many 57mm devices, among others:
- Dittel KRT2
- TQ KRT2-S
- TQ KRT2-L
- Funke ATR833
- Becker AR6201
- Becker RT6201