Supersonic Marker Beacon Antenna

75 MHz

SKU: 21-20-29

Contact us for latest price
Sold Out - Backorder Available


Calculate Shipping



Freight to be quoted - $0.00
As the size and weight is not normally known we use several freight carriers to ensure you get the best price. Complete your order or quote and we will get back to you with the available freight options.

Supersonic Marker Beacon

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. 

  • Lightweight
  • Small physical size
  • No tuning required
  • Designed to MIL-STD-810 environmental conditions
  • DC Grounded antenna element
21-20-29
Model # 21-20-29
Brand Cooper Antennas
Frequency 75 MHz ± 10 kHz 
VSWR ≤ 3.0:1 
Impedance (nominal) 50 Ohms
Polarization Predominantly Horizontal 
Radiation Downward lobe
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) 

Finish

  • Matt Grey urethane paint
  • Other finish options are available.
  • Please specify finish required when ordering.
Datasheet:

More From This Category


Airborn Stub Antenna

Airborn Stub Antenna

SKU: 21-50-30

Airborne AIS Blade Antenna

Airborne AIS Blade Antenna

SKU: 21-20-60

Airborne Blade Antenna

Airborne Blade Antenna

SKU: 21-30-55

Airborne Blade Antenna

Airborne Blade Antenna

SKU: 21-30-176

Airborne IFF Interrogator Antenna

Airborne IFF Interrogator Antenna

SKU: 21-40-66

Airborne Stub Antenna

Airborne Stub Antenna

SKU: 21-20-12

Aircraft Static Discharger

Aircraft Static Discharger

SKU: 21-90-02