Dolba BD1 dipole (sleeve) transponder antenna, so called 'Sperrtopfantenne'.
For installation inside the fuselage (GFK only).
With BNC female connector.

Frequency: 1030 MHz - 1090 MHz
Impedance: 50 Ohms
Weight: 60g

Dimensions:
L=200mm (excl. BNC-connector)
D=20mm