Supersonic Marker Beacon Antenna
The 21-20-29 is a lightweight Marker Beacon Antenna suitable for Instrument Landing Systems (ILS) installations on Subsonic and Supersonic aircraft. Its rugged design uses a printed circuit radiating element enclosed within a lightweight glass reinforced composite shell which in turn is bonded into a machined aluminum alloy base plate. This method of construction avoids base delamination problems associated with some other manufacturers designs.
- Small physical size
- No tuning required
- Designed to MIL-STD-810 environmental conditions
- DC Grounded antenna element
|Frequency||75 MHz ± 10 kHz|
|Impedance (nominal)||50 Ohms|
|Antenna RF Connector||TNC Female|
|Construction||High density foam filled epoxy/fibre glass shell set in aluminium alloy base collar|
|Height||1.9 inches (48.3mm)|
|Length||9 inches (228.6mm)|
|Weight||0.6616 lb (0.3 kg) max|
|Base Plate Shape||Oval|
|Fixing Holes||6 x Ø 0.2 inches (5.1mm) holes , counter bored 0.5 inches (12.7mm)|
- Matt Grey urethane paint
- Other finish options are available.
- Please specify finish required when ordering.